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The Expanded Very Large Array

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The Expanded Very Large Array Powered By Docstoc
					                         The EVLA Correlator
                                              P. Dewdney
                                  Herzberg Institute of Astrophysics
                        National Research Council Canada




N ational R esearch Council   Conseil national de recherches
Canada                        Canada
                                                      Outline
1.     Correlator Performance Goals
2.     Hardware Progress
3.     Software Progress
4.     System Progress
5.     Prototype Testing
6.     Installation Estimates
7.     Funding, Budget & Schedule
8.     Risk Issues
 N ational R esearch Council   Conseil national de recherches
 Canada                        Canada                           P. Dewdney EVLA Review - May 2006   2
                  Key EVLA Processing Capabilities
                                                                  8 GHz Bandwidth (dual polarization).
Deep Imaging                                                      Full polarization processing.
Polarization                                                      Wide-field imaging.
                                                                    16,000 channels at max. bandwidth (BW).
Narrow spectral lines                                               >106 channels at narrow BWs.
                                                                    Spectral resolution to match any linewidth.
Wideband searches                                                   Spectral polarization (Zeeman Splitting).

                                                                    8 tunable 2 GHz wide bands.
Flexibility                                                         Each band - 16 tunable sub-bands.
                                                                    Sub-band – independent spectral resolution.
Many resources                                                      Simultaneous line and continuum.

                                                                  1000 pulsar “phase bins”.
                                                                  “Single-dish” data output to user
High time resolution                                               instruments.
                                                                  Very fast time sampling (<20 s).
  N ational R esearch Council   Conseil national de recherches
  Canada                        Canada                                P. Dewdney EVLA Review - May 2006    3
EVLA Correlator System Diagram
         Significant Events Since Dec. 2004
•   Correlator Chip CDR – Jan/05
•   Software Review – Jan/05.
•   Correlator Preliminary Design Review – July/05.
•   PCB fabricator contract signed – Jan/06.
•   Prototype Correlator chip wafers fab’d – Feb/06.
•   Software Review – Mar/06.
•   Prototype chip delivery – early Jun/06.
•   Baseline Board prototype delivery – Jun/06.
•   Station Board prototype delivery – est. Aug/06.
                                         Hardware Progress
•          FPGA’s
       –        All FPGA’s are designed, including the Filter Chip.
•          Station board
       –        Layout is close to completion, including Design-for-Manufacture approval.
       –        Presently undergoing signal integrity simulation.
       –        Prototype fabrication order expected in June.
•          Baseline Board
       –        Prototype fabrication under way.
•          Phasing board
       –        Draft specification (RFS) released.
       –        Deferred in time but not reduced in priority.
•          Other boards
       –        Prototypes for all other boards already fabricated.
       –        Fan-out board needs redesign for better signal margins.
•          System
       –        Racks designed and prototyped; thermal analysis done.
       –        Power system RFP draft written.
       –        Reliability analysis system in place – first draft of analysis complete.


    N ational R esearch Council   Conseil national de recherches
    Canada                        Canada                           P. Dewdney EVLA Review - May 2006   6
Station Board Layout
• “Daughter” Board - brown.
• Power Supplies – pink.
• FPGA’s – Green
• Connectors – light brown
and white.
• ~5000 parts.
• 140 required for EVLA.




                              Size: ~510 x ~410 mm
                                                                                                                                                                                                                                                                                                                                                                                                                                                    11.50509




                                                                                                                                                                                                                                                                                                                                                                                                                                                                               12.25311




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     12.88705



                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          13.36882




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           14.47118
                                                                                                  1.20011




                                                                                                                                             2.03109




                                                                                                                                                                                                            3.61009




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   15.6102
                                                                                                                            1.5598




                                                                                                                                                                                          3.1388




                                                                                                                                                                                                                                                                                                                                                                                                                             10.556




                                                                                                                                                                                                                                                                                                                                                                                                                                                     11.353




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                12.135




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               13.920
                                                    0.120
                                                    0.179

                                                                         0.542

                                                                                         0.857

                                                                                                   1.082




                                                                                                                                                                      2.661




                                                                                                                                                                                                   3.392




                                                                                                                                                                                                                                 4.240




                                                                                                                                                                                                                                                                            5.819




                                                                                                                                                                                                                                                                                                                       7.398




                                                                                                                                                                                                                                                                                                                                                                     8.977
                                  6 x .106" DIA

                               19.687                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 19.687
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      19.569
                              19.4685

                                                                                         3

                              19.035                                      SW2            2

                                                                                         1                                                                      U425                                                                                 U109                                                           U113                                                                        U427                                                                        U110                                                                        U428




Baseline Board Layout
                                                                         3
                                                                     SW1 2
                              18.520                                     1



                              18.04619                                                              U3_63                                                               U3_62                                                      U3_61                                      U3_60                                      U3_59                                            U3_58                                                U3_57                                             U3_56
                              17.9298                                U2_63                                                              U2_62                                                          U2_61                                             U2_60                                     U2_59                                      U2_58                                                       U2_57                                       U2_56
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         U5_28                           U5_30                                                        17.8117


                              17.418                D3L602_63
                                                                                                 U1_63                                                               U1_62                                                      U1_61                                      U1_60                                     U1_59                                          U1_58                                                   U1_57                                            U1_56                   J5_7                                 U4_7
                              17.3647                                                                                                L602_62                                                       L602_61                                            L602_60                                   L602_59                                    L602_58                                                     L602_57                                    L602_56

                                                               U7_63                                                                 U7_62                                                         U7_61                                              U7_60                                     U7_59                                       U7_58                                                      U7_57                                      U7_56
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         U5_29                           U5_31                                                        17.0243




• Green chips – front side.
                              16.8597               D2

                              16.6285
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             .105" DIA(x:15.54",
                                                                                                    U3_55                                                               U3_54                                                      U3_53                                      U3_52                                      U3_51                                            U3_50                                                U3_49                                             U3_48                                                                                            y:7.955")
                              16.3508                                U2_55                                                              U2_54                                                          U2_53                                             U2_52                                     U2_51                                      U2_50                                                       U2_49                                       U2_48
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         U5_24                           U5_26                                                        16.2327


                               15.839               D1L602_55
                                                                                                 U1_55                                                               U1_54                                                      U1_53                                      U1_52                                     U1_51                                          U1_50                                                   U1_49                                            U1_48                   J5_6                                 U4_6
                                                                                                                                     L602_54                                                       L602_53                                            L602_52                                   L602_51                                    L602_50                                                     L602_49                                    L602_48
                              15.7857
                                                               U7_55                                                                 U7_54                                                         U7_53                                              U7_52                                     U7_51                                       U7_50                                                      U7_49                                      U7_48
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         U5_25                           U5_27                                                        15.4453
                              15.2807               D17




• Blue chips – back side.
                              15.0495
                                                                                                    U3_47                                                               U3_46                                                      U3_45                                      U3_44                                      U3_43                                            U3_42                                                U3_41                                             U3_40
                                                                     U2_47                                                              U2_46                                                          U2_45                                             U2_44                                     U2_43                                      U2_42                                                       U2_41                                       U2_40
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         U5_20                           U5_22                                                        14.6537


                               14.260               D4L602_47
                                                                                                 U1_47                                                               U1_46                                                      U1_45                                      U1_44                                     U1_43                                          U1_42                                                   U1_41                                            U1_40                   J5_5                                 U4_5
                                                                                                                                     L602_46                                                       L602_45                                            L602_44                                   L602_43                                    L602_42                                                     L602_41                                    L602_40
                              14.2067
                                                               U7_47                                                                 U7_46                                                         U7_45                                              U7_44                                     U7_43                                       U7_42                                                      U7_41                                      U7_40                                                                                                                                                          J3   13.8663
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         U5_21                           U5_23
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      13.8265
                              13.7017               D35



                                                                                                    U3_39                                                               U3_38                                                      U3_37                                      U3_36                                      U3_35                                            U3_34                                                U3_33                                             U3_32




• 8 x 8 array of correlator
                                                                     U2_39                                                              U2_38                                                          U2_37                                             U2_36                                     U2_35                                      U2_34                                                       U2_33                                       U2_32
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         U5_16                           U5_18                                                        13.0747




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               J2
                               12.681               D36
                                                                                                 U1_39                                                               U1_38                                                      U1_37                                      U1_36                                     U1_35                                          U1_34                                                   U1_33                                            U1_32                   J5_4                                 U4_4
                                                       L602_39                                                                       L602_38                                                       L602_37                                            L602_36                                   L602_35                                    L602_34                                                     L602_33                                    L602_32
                              12.6277
                                                               U7_39                                                                 U7_38                                                         U7_37                                              U7_36                                     U7_35                                       U7_34                                                      U7_33                                      U7_32
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         U5_17                           U5_19                                                        12.2873
                              12.1227               D37



                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      11.77914




chips.
                                                                                                    U3_31                                                               U3_30                                                      U3_29                                      U3_28                                      U3_27                                            U3_26                                                U3_25                                             U3_24
                                                                     U2_31                                                              U2_30                                                          U2_29                                             U2_28                                     U2_27                                      U2_26                                                       U2_25                                       U2_24
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         U5_12                           U5_14                                                        11.4957




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               J1
                               11.102               D5L602_31
                                                                                                 U1_31                                                               U1_30                                                      U1_29                                      U1_28                                     U1_27                                          U1_26                                                   U1_25                                            U1_24                   J5_3                                 U4_3
                                                                                                                                     L602_30                                                       L602_29                                            L602_28                                   L602_27                                    L602_26                                                     L602_25                                    L602_24
                              11.0487                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  10.913
                                                               U7_31                                                                 U7_30                                                         U7_29                                              U7_28                                     U7_27                                       U7_26                                                      U7_25                                      U7_24
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         U5_13                           U5_15                                                        10.7083
                              10.5437               D6



                                                                                                    U3_23                                                               U3_22                                                      U3_21                                      U3_20                                      U3_19                                            U3_18                                                U3_17                                             U3_16




• LTA chips on the back
                                                                     U2_23                                                              U2_22                                                          U2_21                                             U2_20                                     U2_19                                      U2_18                                                       U2_17                                       U2_16
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         U5_8                            U5_10                                                         9.9167
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       9.8435

                               9.523                D10
                                                                                                 U1_23                                                               U1_22                                                      U1_21                                      U1_20                                     U1_19                                          U1_18                                                   U1_17                                            U1_16                   J5_2                                 U4_2
                                                       L602_23                                                                       L602_22                                                       L602_21                                            L602_20                                   L602_19                                    L602_18                                                     L602_17                                    L602_16
                              9.4697
                                                               U7_23                                                                 U7_22                                                         U7_21                                              U7_20                                     U7_19                                       U7_18                                                      U7_17                                      U7_16
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         U5_9                            U5_11                                                         9.1293
                              8.9647                D12




side.
                                                                                                    U3_15                                                               U3_14                                                      U3_13                                      U3_12                                      U3_11                                            U3_10                                                 U3_9                                               U3_8
                                                                     U2_15                                                              U2_14                                                          U2_13                                             U2_12                                     U2_11                                      U2_10                                                        U2_9                                         U2_8
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         U5_4                             U5_6                                                         8.3377


                               7.944                                                             U1_15                                                               U1_14                                                      U1_13                                      U1_12                                     U1_11                                          U1_10                                                   U1_9                                             U1_8                    J5_1                                 U4_1
                                                    D13
                                                      L602_15                                                                        L602_14                                                       L602_13                                            L602_12                                   L602_11                                    L602_10                                                     L602_9                                     L602_8
                              7.8907                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       .105" DIA(x:15.54", y:7.955")

                                                               U7_15                                                                 U7_14                                                         U7_13                                              U7_12                                     U7_11                                       U7_10                                                       U7_9                                       U7_8
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         U5_5                             U5_7                                                         7.5503
                              7.3857                D14



                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      6.99319




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      U3
                                                                                                      U3_7                                                                U3_6                                                       U3_5                                       U3_4                                       U3_3                                             U3_2                                                U3_1




• Recirculation Controller.
                                                                     U2_7                                                                U2_6                                                              U2_5                                           U2_4                                      U2_3                                       U2_2                                                        U2_1                                              U2                                                                                                                                                       6.87681
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          U5                              U5_2                                                         6.7587


                               6.365                D15L602_7
                                                                                                 U1_7                                                                U1_6                                                       U1_5                                       U1_4                                      U1_3                                           U1_2                                                    U1_1                                              U1                      J5                                       U4
                              6.3117                                                                                                 L602_6                                                        L602_5                                             L602_4                                    L602_3                                      L602_2                                                     L602_1                                      L602                                                                                                                                                                6.274

                                                                U7_7                                                                  U7_6                                                          U7_5                                               U7_4                                      U7_3                                       U7_2                                                        U7_1                                        U7                                                                                                                                                                 6.027
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         U5_1                             U5_3                                                         5.9713
                              5.8067                D16
                                                                                                   J5_15




                                                                                                                                                                       J5_14




                                                                                                                                                                                                                                  J5_13




                                                                                                                                                                                                                                                                             J5_12




                                                                                                                                                                                                                                                                                                                        J5_11




                                                                                                                                                                                                                                                                                                                                                                         J5_10




                                                                                                                                                                                                                                                                                                                                                                                                                             J5_9




                                                                                                                                                                                                                                                                                                                                                                                                                                                                               J5_8
                              5.61295
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                .100" DIA(x:12.91", y:5.48")
                                                                                 U5_61




                                                                                                                    U5_60




                                                                                                                                                       U5_57




                                                                                                                                                                                  U5_56




                                                                                                                                                                                                                      U5_53




                                                                                                                                                                                                                                            U5_52




                                                                                                                                                                                                                                                                  U5_49




                                                                                                                                                                                                                                                                                       U5_48




                                                                                                                                                                                                                                                                                                           U5_45




                                                                                                                                                                                                                                                                                                                                  U5_44




                                                                                                                                                                                                                                                                                                                                                         U5_41




                                                                                                                                                                                                                                                                                                                                                                                   U5_40




                                                                                                                                                                                                                                                                                                                                                                                                                  U5_37




                                                                                                                                                                                                                                                                                                                                                                                                                                       U5_36




                                                                                                                                                                                                                                                                                                                                                                                                                                                                  U5_33




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           U5_32
                                                    2 4 6 8 101214
                                                    1 3 5 7 9 1113




                              5.13118




• ~12000 parts
                                                   J7




                               5.006
                                                                                                  U4_15




                                                                                                                                                                      U4_14




                                                                                                                                                                                                                                 U4_13




                                                                                                                                                                                                                                                                            U4_12




                                                                                                                                                                                                                                                                                                                       U4_11




                                                                                                                                                                                                                                                                                                                                                                     U4_10




                                                                                                                                                                                                                                                                                                                                                                                                                             U4_9




                                                                                                                                                                                                                                                                                                                                                                                                                                                                               U4_8
                               4.580                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      U115
                                                                                 U5_63




                                                                                                                    U5_62




                                                                                                                                                       U5_59




                                                                                                                                                                                  U5_58




                                                                                                                                                                                                                      U5_55




                                                                                                                                                                                                                                            U5_54




                                                                                                                                                                                                                                                                  U5_51




                                                                                                                                                                                                                                                                                       U5_50




                                                                                                                                                                                                                                                                                                           U5_47




                                                                                                                                                                                                                                                                                                                                  U5_46




                                                                                                                                                                                                                                                                                                                                                         U5_43




                                                                                                                                                                                                                                                                                                                                                                                   U5_42




                                                                                                                                                                                                                                                                                                                                                                                                                  U5_39




                                                                                                                                                                                                                                                                                                                                                                                                                                       U5_38




                                                                                                                                                                                                                                                                                                                                                                                                                                                                  U5_35




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           U5_34
                              4.02882
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       3.150


                              3.5205                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           J3_1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       3.3265




• ~177 required for EVLA.      2.775

                               2.450
                                                                             CAGE1
                                                                             CAGE3

                                                                                                     CAGE5
                                                                                                           J11


                                                                                                                                                               J15
                                                                                                                                                                                               U100
                                                                                                                                                                                                                                                                                                           U150                      U151                         U152                      U153




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               J2_1
                                                                                                                                                                                                                                                                U107                                                                                                                                                                             U111
                               2.125                                         CAGE2
                                                                             CAGE4                         J12
                                                    2 4 6 8 101214
                                                    1 3 5 7 9 1113




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  U426
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      1.27914
                                                   J6




                               1.216




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               J1_1
                                                                                                                                                                                 U105                                                                           U429                                                                                                                                                                             U108




                                                                                                                                                                                                                                                                                                                                                                                                ABCD
                                                                                                                                                                                                                                                                                                                                                   J10
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       0.413
                                .320
                               .2185
                                                                                                                                                                                                                                                                                                               32


                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               .100" DIA(x:12.91", y:5.48")




                                                                                                                                                                                                                                                                                                                                                                                            1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       0.118
                               0.000                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   0.000




                                                                                                                                                                                                                                                                                                                                                                                                                  10.1623




                                                                                                                                                                                                                                                                                                                                                                                                                                       10.9497




                                                                                                                                                                                                                                                                                                                                                                                                                                                                  11.7413




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           12.5287




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      15.689
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      15.748
                                                  0.6155
                                                  0.6883




                                                                                                           1.2945
                                                                                                                    1.4757




                                                                                                                                                       2.2673




                                                                                                                                                                                  3.0547




                                                                                                                                                                                                                       3.8463




                                                                                                                                                                                                                                            4.6337




                                                                                                                                                                                                                                                                  5.4253




                                                                                                                                                                                                                                                                                       6.2127




                                                                                                                                                                                                                                                                                                     7.0043




                                                                                                                                                                                                                                                                                                                                  7.7917




                                                                                                                                                                                                                                                                                                                                                         8.5833




                                                                                                                                                                                                                                                                                                                                                                                   9.3707




                                                                                                                                                                                                                                                                                                                                                                                                                                                    11.349
                                                   0.000
                                                  0.078
                                                  .1405
                                                  0.188
                                                  0.276
                                                  0.480




                                                                                                                                                       2.388




                                                                                                                                                                                                                                                                                                     6.726
                                                                                                                                                                                                                                                                                                     6.876




                                                                                                                                                                                                                                                                                                                                                                                                        9.776
                                                                                                                                                                                                                                                                                                                                                                                                        9.876
                                          -.1984
                                          -.1000
                                           Software Progress
•          GUI-based prototype testing software
       –           Complete enough to be useful already.
       –           All FPGA’s covered except Phasing Board.
       –           Provides “engineer’s view of correlator system.
               •       Permanent maintenance value.
       –           Top-level GUI’s now under development.
•          Virtual Correlator Interface
       –           Well defined except for correlator output area.
       –           Communications protocol well defined except for transport layer.
•          Master Correlator Control Computer (MCCC)
       –           Work deferred for GUI development.
       –           Architecture/scope well defined.
•          Real-time control software
       –           “CMIB” processor on each board.
       –           Operating system has been working for a long time.
       –           XML-based communication with “outside world”.
       –           Drivers for FPGA’s are well under way.

    N ational R esearch Council   Conseil national de recherches
    Canada                        Canada                           P. Dewdney EVLA Review - May 2006   9
                          Correlator Software System Context


                                             Model Server




                                                                              ...
                                                              ...
Observation Layer
                                                 MCCC
                    EVLA Monitor & Control       (1+1)

                                                            Station Board   Baseline Board
                                                                                             Backend
              Monitor & Control Data                                                                     Archive

              Astronomical (observed) Data

                                                  CPCC
                                                  (1+1)


                                                                                                       Log Server
                                          Correlator System GUI
WIDAR Correlator - Top level system view (40 stations configuration)
 Main


                                                                                        TGM 0                     TGM 1
                                                                       Board            101-1-7                   110-1-7
  MCCC 1      MCCC 2            CPCC 1     CPCC 2
                                                            Backend    Status          Running                    Running
   Active     Standby           Standby     Active
                                                                       Time 0    2007-123-09:45:34.010     2007-123-09:45:34.010
                                                                       Time 1
                                                                       Time 2
                   Boot
 Log Server                                                                                 Details                   Details
                  Server




  Rack 001       Rack 002      Rack 003       Rack 004      Rack 005
                                                                       Observation    Start Time                    Status
                                                                       V013Q22        2007-123-09:30:00.000         In progress
                                                                       V013Q23        2007-123:10:35:30.000         Accepted
  Rack 006      Rack 007       Rack 008       Rack 009      Rack 010   V021A90        2007-123-09:45:34.000         In progress
                                                                       V014Q01        2007-124:11:05:00.000         Rejected
                                                                       V01V22         2007-122:23:30:00.000         In progress
                                                                       V01V23         2007-123:10:15:00.000         Accepted
  Rack 100       Rack 101      Rack 102       Rack 103      Rack 104   Test21         2007-123:09:30:00.000         In progress




  Rack 105      Rack 106       Rack 107       Rack 008      Rack 109   Antenna       Quad       #Boards   Board1       Board2
                                                                        EVLA01       01         4         001-0-0      001-0-1
                                                                        EVLA02       02         4         001-0-4      001-0-5
                                                                        EVLA03       03         4         001-1-0      001-1-1
  Rack 110       Rack 111      Rack 112       Rack 113      Rack 114
                                                                        EVLA04       04         4         001-1-4      001-1-5
                                                                        EVLA05       05         2         002-0-0      002-0-1
                                                                        EVLA06       05         2         002-0-2      002-0-3
  Rack 115                                                              EVLA07       06         2         002-0-4      002-0-5


                                                             Heating
                                               Power
                                                              and
                                              Systems
                                                             Cooling
                                                                                         Individual Rack
WIDAR Correlator - Rack
 Main

   Rack 001
                                                                                                                  Board         Status            IP        Type
        Crate 0                                                                                                     0              OK        123.23.1.1     STB
                                                                                                                    1              OK        123.23.1.9     STB
           0              1                2               3                4            5   6   7
                                                                                                                    2              OK        123.23.1.17    STB
                                                                                                                    3         Initializing   123.23.1.25    STB
                                                                                                                    4              OK        123.23.1.34    BLB
                                                                                                                    5              ---


                                                                        Baseline Board
                                                                                                                    7
                                                                                                                    6              ---
                                                                                                                                   OK         123.23.1.60   TGM




                                                                                                 TIMECODE Gen
        Station Board
                        Station Board
                                        Station Board
                                                        Station Board
                                                                                                                    7              OK        123.23.1.60    TGM
                                                                                                                    8              ---
                                                                                                                    9              ---
                                                                                                                   10              ---
                                                                                                                   11              ---
                                                                                                                   12              ---
                                                                                                                   13              ---
        Crate 1                                                                                                    14              ---
                                                                                                                   15              ---
           0              1                2               3                4            5   6   7
                                                                                                                Operator Log
                                                                                                                2007-90-11:15 Replaced STB1
                                                                                                                2007-89-13:45 Initial installation
                                                        Station Board Top Level
Station Board Rack: 1 Crate: 0 Slot: 5 Main
  Screen           Board      FPGAs
Board Serial # :            1234567890 Design/Version/Release:      01     1   7   State:   running                                                   Refresh (on)
                                                                                                                        LED 1          Run
Configuration File     /evla/widar/stb/cfg/test_1001                                                                                                 Sec:     2         Once
                                                                                                                                       Halt
                                                                                                                        LED 2

Block Diagram        FPGA Cfg. Files   FPGA Bit Files     CRC Checking Setup




                                                                                            Filter 0_00
                                                                                            Filter0_00    Filter 0_01
                                                                                                          Filter0_01     Filter0_02
                                                                                                                         Filter 0_02      Filter 0_03
                                                                                                                                          Filter0_03         Filter 0_04
                                                                                                                                                             Filter0_04




                                                                                            Filter 0_05
                                                                                            Filter0_05    Filter 0_06
                                                                                                          Filter0_06     Filter 0_07      Filter 0_08
                                                                                                                                          Filter0_08         Filter 0_09
                                                                                                                                                             Filter0_09




                                                                                            Filter 0_10
                                                                                            Filter0_10    Filter 0_11    Filter 0_12
                                                                                                                         Filter0_12       Filter 0_13        Filter 0_14
                                                                                                                                                             Filter0_14



                                                                                             Filter       Filter0_15
                                                                                                          Filter 0_15    Filter 0_16
                                                                                                                         Filter0_16           Filter 0_17     Output 0
                                                                                                                                                             OUTPUT A
                                                                                                VSI 0
                                                                                             0_00

                                                       Delay
                                                       DELAY A0

        FORM
        FORM                    INPUT
                                INPUT                                    WBC
                                                                         WBC                                MCB
                                                                                                            MCB            CFG
                                                                                                                           CFG                                 Timing
                                                       Delay
                                                       DELAY B1



                                                                                            Filter 1_00
                                                                                            Filter0_00    Filter 1_01
                                                                                                          Filter0_01     Filter0_02
                                                                                                                         Filter 1_02      Filter 1_03
                                                                                                                                          Filter0_03         OUTPUT B
                                                                                                                                                              Output 1



                                                                                            Filter 1_04
                                                                                            Filter0_04    Filter 1_05
                                                                                                          Filter0_05     Filter0_06
                                                                                                                         Filter 1_06      Filter 1_07
                                                                                                                                          Filter0_07         Filter 1_08
                                                                                                                                                             Filter0_08




                                                                                            Filter 1_09
                                                                                            Filter0_09    Filter 1_10
                                                                                                          Filter0_10     Filter0_11
                                                                                                                         Filter 1_11      Filter 1_12
                                                                                                                                          Filter0_12         Filter 1_13
                                                                                                                                                             Filter0_13




                                                                                               VSI B 1
                                                                                               VSI                              1_15
                                                                                                                         Filter0_15
                                                                                                          Filter 1_14
                                                                                                          Filter0_14     Filter               Filter 1_16
                                                                                                                                              Filter0_16     Filter 1_17
                                                                                                                                                             Filter0_17
                      Station Board Rack: 1 Crate: 0 Slot : 5 Filter 0_12

                     Screen Configuration               Hardware
                        General                                                                                                                   InOut
                       Design/Revision/Version:         01       1        7    State:           running                                           Input:                         A                 Output Enable:          A            B
                                                                                                                                                  Input Delay:                       37            Daisy Delay:                  112
                       Configuration File        /evla/widar/stb/filter/cfg_01.xml Browse
                       FPGA Bit File
                                                                                                                                                  Time Interval :            1234567
                                                 /evla/widar/stb/filter/bit/abc                      Browse
                                                                                                                                                  Delay
                        VCI
                                                                                                                   Status                          Data Input Rate:                   0              Demux Factor:                      15
                        Input band width (MHz):                      2048                   Setup
                                                                                                                   Input delay calibration:
                                                                                                                                                  Delay Model:                   External            Phase Factor:              0x4000
                        Input # bits:                                     3                                        Input delay adjust:
                                                                                                                                                  Delay:                          123456             Delay Rate:                          0
                                                                                        Fbit:                      System clock:
                        Input # bands:                                    1                                        Delay Module Input:
                                                                                                                   Read/Write:
                                                                                        Flip:                                                     Stage 1
                        Input band:                                       1
                                                                                        Mix:                           Reset status indicators
                        Output band width (MHZ):             128.0000
                                                                                                                                                 Product File:         /evla/widar/stb/filter/s1prd/abc                        Browse
                                                                                        LSB:
                        Output band center (MHz):            192.0000000                                                    CRC

Filter Control GUI      Output # bits:

                        Accumulation (interrupts):               100
                                                                          4                                                         Auto

                                                                                                                            View Error Counts
                                                                                                                                                 Data Output Rate:

                                                                                                                                                  Invalid Stretch Length :
                                                                                                                                                                                      0
                                                                                                                                                                                              32       Filter Delay :
                                                                                                                                                                                                                                XBAR

                                                                                                                                                                                                                                     16
                                                                                                                                                  Scale Factor :                              1         Number of Taps :             512
                        Results file:     /evla/widar/stb/filter/fm/out/abc                Browse                           Reset Error Counts
                                                                                                                                                  Mixer
                        Format
                                                                                                                                                 Mixer Trig File      /evla/widar/stb/filter/s2mix/abc                           Browse

                        Output File:               /evla/widar/stb/filter/fm/out/abc                                                 Browse           Use mixer              Mixer Phase Model:                External

                                                               4              Power                  on         12345        off       12344
                       Select Data:                                                                                                              Phase:             0x00000000
                                                                              Valids                 on          313        off            312   Phase Rate:        0xFEDCBA9
                        Select Clip:                           1              Clip Count                     1234567
                        RFI Detect Level:                  0x17534            RFI Detections                       2                             Stage 2
                       RFI Detect Length:                        256                                                                             Coefficient file    /evla/widar/stb/filter/s2cof/abc                          Browse

                       Sideband Flipper               On                                                                                         Output Rate:                     4                 Calculation Rate:            0

                        Quantizer Scaling:                   0x1234           Quantizer Power                1234567                             Invalid Stretch Length :             32            Filter Delay :                   16
                                                                                                                                                 Scale Factor :                           1         Number of Taps             512
                        Quantizer # Bits:                            4        Quantizer Clip Count                     1
                       Quantized State:               Auto           -3       Quantizer State Count                    4            Histogram
                                                                                                                                                 Stage 3
                       TEX Trig File               /evla/widar/stb/filter/fm/tex/trig/abc                                            Browse
                                                                                                                                                 Coefficient file    /evla/widar/stb/filter/s3cof/abc                          Browse
                       TEX Phase Model                External
                                                                                                                                                 Output Rate:                     8                 Calculation Rate:            0
                        TEX Phase:                  0x12345678                TEX Valids                          625
                                                                                                                                                 Invalid Stretch Length :             32            Filter Delay :                   16
                        TEX Phase Rate:             0xFEDCBA9                 TEX Sums               cos         1234        sin           252   Scale Factor :                       1             Number of Taps             512

                        Read/Write Registers                                            Refresh                                                  Stage 4
                                                                                        Sec:                               Once                  Coefficient file    /evla/widar/stb/filter/s4cof/abc                          Browse
                        Read             Write       Write/Read
                                                                                                                                                 Output Rate:                   12                  Calculation Rate:            0
                                                                                        Test Port
                       Register:        Write:        Read:                                                                                      Invalid Stretch Length :             32            Filter Delay :                   16
                                                                                           TP0         TP1       TP2        TP3
                                                                                                 5         17     255          33                Scale Factor :                           1         Number of Taps             512
                              Correlator Software People
•       Sonja Vrcic (Penticton)
    –       Coordinates overall design and specification.
    –       Virtual Correlator Interface (VCI) definition.
    –       Master Correlator Control Computer (MCCC) S/W.
•       Bruce Rowen (Socorro)
    –       Correlator hardware control S/W (CMIB).
•       Kevin Ryan (Socorro)
    –       GUI development and hardware control S/W.
•       Martin Pokorny (Socorro)
    –       Correlator Backend software.
•       Michael Rupen, John Romney, Bryan Butler, Ken Sowinski,
        Barry Clark, Bill Sahr (Socorro)
    –       Advisory capacity.



    N ational R esearch Council   Conseil national de recherches
    Canada                        Canada                           P. Dewdney EVLA Review - May 2006   15
                          System Progress
•       NRAO work on correlator room is progressing rapidly.
•       Design of overall room layout is complete.
•       Environmental specifications have been developed.
    –     Air flow & temperature: ~1700 cfm per rack, 15 oC.
    –     ElectroStatic Discharge (ESD)
          •   90 nm devices used extensively (<1/1000 thickness of human hair)
          •   Humidity specs.
          •   Strict handling and servicing procedures.
    –     Air quality
          •   ISO 14644-1 class 8 + MERV 13 filter.
•       Racks
    –     “Thermal prototypes” have been built and tested.
    –     “Mechanical prototypes” ditto.
    –     Preliminary fabrication plan is being developed.
•       Preliminary installation plan is being developed.
•       Power plant specifications/RFP draft written for
        acquisition this fiscal year (ends Mar 31/07).
                                                    Correlator Rack Layout
                   airflow
                               -48 VDC,
        1 Gbps               48VRET from
        Ethernet              power plant
      to Backend


100/1000 Mbps
 Ethernet M&C
                               -48 VDC
                                breaker
                                 panel



                                  M&C
                                Ethernet
                                 switch




                                Up to 256, 4-
                                    wafer,
                                 1.024 Gbps
                               cables: Fanout-
                                 to-Baseline
                                   Boards
   FRONT



                               Up to 40, 4-wafer,
                                  1.024 Gbps
                                  cables from
                                station racks to
                                Fanout Boards.




  Raised floor




 Rack pedestal
                   airflow
             Correlator Room Layout
                                                                  48'-0"




                                                   HVAC DX                            HVAC DX
                                                  COMPR UNIT                         COMPR UNIT


         AC input for HVAC and
         lighting.
                                                          Backend Computers
         AC input, 50 kW, 56 kVA for backend      BE      BE          BE   BE         BE     BE
         computers, MCCC, CPCC, test                                                               115VAC
                                                   1       2           3    4          5      6
         outlets

         480 VAC, 3-phase
         delta, 190 kW (211                                     Station Racks




                                                                                                                 HVAC CW UNIT
         kVA) for 48 VDC plant                                        (8)
                                                  B              B              B             B
         -48VDC Power Plant
                                                  B              S              S             B
                Prim
                Bay


                          Sec
                          Bay




                                                  B              S              S             B
47'-0"




                                                  B              S              S             B
                 Battery String 1

                                                  B              S              S             B




                                                                                                                     HVAC CW UNIT
           Battery Strings
                                                  B              B              B             B
                 Battery String 2

                                                                 S              S
                                                                 40             40


          2-cable 48VDC connects from each DC
             PDU breaker output to each rack
                                                                                           Baseline
                        seperately.                                                        Racks(16)
         (24 cable pairs in a 32-Station correlator)
                                                           40-Station Expansion
                                                           adds 2 Station racks
                                                                                                  SPARE - reserved
                                                       Switch                   MCCC/
               Fiber      Fiber                                                                   HVAC 5th CW UNIT
                                                       Rack                     CPCC                  (if req’d)
                                                                                 Rack
ElectroStatic Discharge (ESD)

                      RESTRICTED ACCESS

                         ESD Protected Area
                       wear ESD coats and shoes
                        Overriding door interlock will sound
                                     ALARM
                                          Correlator Testing
•          Production correlator chip tests
       –        Functional acceptance test by supplier using DRAO-
                supplied equipment.
               •       At speed, but not over temperature range.
       –        DRAO lab tests: special jig to be fabricated.
               •       HALT/HASS tests being investigated (advanced version of
                       “burn-in”).
•          Unit PCB hardware tests during production:
       –        Fast functional tests performed at factory in DRAO-
                supplied equipment.
•          Unit hardware tests after acceptance
       –        HALT/HASS tests of circuit boards (or equivalent).
       –        Extended functional tests.

    N ational R esearch Council   Conseil national de recherches
    Canada                        Canada                           P. Dewdney EVLA Review - May 2006   21
                              Correlator Testing (cont’d)
•          System Tests
       –        Prototype Stage
               •       Extended testing/debug cycle in lab – all functions.
               •       Many self-tests, simulated observations.
               •       Should confer a high degree of reliability for On-the-Sky tests.
       –        On-the-sky Tests
               •       Final demonstration of prototype tests – designed to be quasi-
                       independent of EVLA S/W.
               •       Begin System Integration with EVLA software (continuing
                       process).
               •       Hardware left at VLA site.
       –        Software Tests after On-the-Sky correlator delivered.
               •       Continued testing with hardware that will remain at the VLA.
               •       Understand interference (RFI) and the “clues” that the WIDAR
                       system provides.

    N ational R esearch Council   Conseil national de recherches
    Canada                        Canada                           P. Dewdney EVLA Review - May 2006   22
Test Configuration – Software View
                                                                                              On-the-Sky Test Setup
                                                                27"

                                                                                                                        “External Timecode” (fiber)   From NRAO
                                                                                                                                                      Array Timing




                                                                                                       Timecode Board
                                                                                                                        128 MHz CW, 0dBm               Reference




                                                                             Baseline Board
        Station Board


                        Station Board


                                           Station Board


                                                             Station Board




                                                                                                                                    Backend
                                                                                                                                 Host Computer
                                                                                                                                   Computer
                                                                                               12U
                                                                                               crate




                                                                                                                                             110 VAC, 15 A
4' 5"

                                                           Fan Tray
                                                                                                                                      Host
                                                                                                                                 Host Computer
                                                                                                                                   Computer




                                              Ethernet Switch

                                        -48 VDC Breaker Panel                                                                                To NRAO network


                                        -48 VDC Power Supply                                                            1 phase: 170-264 VAC (30 A)
                                             Installation Procedure
                                  (Note: Dates from Apr/06 Long Term Schedule)
•         06-07: Install –48V DC power system.
•         06-07: Install underfloor cables.
•         08: Manufacture racks in Penticton.
•         08: Install overhead power distribution.
•         08: Install control computers, Ethernet switches,
          backend computers and other COTS equipment.
•         08-09: Install boards into racks in an order that
          maximizes scientific benefit.




    N ational R esearch Council   Conseil national de recherches
    Canada                        Canada                           P. Dewdney EVLA Review - May 2006   25
         EVLA Correlator Group


DRAO-based.




                     NRAO-based.
                Funding in Canada – No Change
  Aug/03 – Canadian Treasury Board approval of
   submitted budget ($C 20M over 5 years).



• Most spending in $US.
• But see risk factors.




     N ational R esearch Council   Conseil national de recherches
     Canada                        Canada                           P. Dewdney EVLA Review - May 2006   29
                     Correlator Projected Spending Profile
                           EVLA Spending Profile


     $7,000,000.00

     $6,000,000.00
                                                                        Labour
     $5,000,000.00
                                                                        Fabrication

     $4,000,000.00                                                      Contracts
$C




                                                                        Equipment
     $3,000,000.00                                                      Softw are

     $2,000,000.00                                                      Miscellaneous
                                                                        Travel
     $1,000,000.00

             $-
                         0


                         1


                         2


                         3


                         4


                         5


                         6


                         7


                         8


                         9


                         0
                       /0


                       /0


                       /0


                       /0


                       /0


                       /0


                       /0


                       /0


                       /0


                       /0


                       /1
                    99


                    00


                    01


                    02


                    03


                    04


                    05


                    06


                    07


                    08


                    09
                  19


                  20


                  20


                  20


                  20


                  20


                  20


                  20


                  20


                  20


                  20
                                  Fiscal Year                                           EVLA Spending Profile


                                                        $6,000,000.00

                                                        $5,000,000.00
                                                                                                                Labour
                                                                                                                Fabrication
                                                        $4,000,000.00
                                                                                                                Contracts
                                                   $C




                                                        $3,000,000.00                                           Equipment
                                                                                                                Softw are
                                                        $2,000,000.00
                                                                                                                Miscellaneous

                                                        $1,000,000.00                                           Travel


                                                                $-
                                                                            0


                                                                            1


                                                                            2


                                                                            3


                                                                            4


                                                                            5


                                                                            6


                                                                            7


                                                                            8


                                                                            9


                                                                            0
                                                                          /0


                                                                          /0


                                                                          /0


                                                                          /0


                                                                          /0


                                                                          /0


                                                                          /0


                                                                          /0


                                                                          /0


                                                                          /0


                                                                          /1
                                                                       99


                                                                       00


                                                                       01


                                                                       02


                                                                       03


                                                                       04


                                                                       05


                                                                       06


                                                                       07


                                                                       08


                                                                       09
                                                                     19


                                                                     20


                                                                     20


                                                                     20


                                                                     20


                                                                     20


                                                                     20


                                                                     20


                                                                     20


                                                                     20


                                                                     20
                                                                                               Fiscal Year
                            Correlator Summary Schedule
Very Uncertain Time Scale
                                        Project Management
•         Schedule
       –        Detailed schedule periodically updated.
       –        Near-term (target) schedule updated weekly.
       –        Long-term schedule discussed monthly, and
                cross-checked against detailed schedule.
•         Budget
       –        Projections updated with schedule.
•         Bills of Materials (BOM’s)
       –        1000’s of components.
       –        Maintenance required.

    N ational R esearch Council   Conseil national de recherches
    Canada                        Canada                           P. Dewdney EVLA Review - May 2006   33
                                  Correlator Documentation

•         Master Document Tracking Spreadsheet
          Maintained at DRAO.
•         115 documents written so far, including
          “Memos”.
•         Additional 23 documents with designations
          and titles are anticipated.




    N ational R esearch Council   Conseil national de recherches
    Canada                        Canada                           P. Dewdney EVLA Review - May 2006   34
                               Principal Design Reviews

• Three Design Reviews:
    – Conceptual (CoDR – Nov, 2001)
            • Review architecture and overall design.
    – Preliminary (PDR – July, 2005)
            • Review detailed designs before prototypes.
    – Critical (CDR)
            • Review system before “limited production” stage.
            • Scheduled for Q2/Q3, 2007.



 N ational R esearch Council   Conseil national de recherches
 Canada                        Canada                           P. Dewdney EVLA Review - May 2006   35
                        Non-Technical Program Risks
•    Funding
       –    Original allotment of funds was over five years.
       –    NRC management was made aware in Aug/03 that this does not fit the project spending profile – they
            decided that internal cash management could deal with the problem.
       –    Will have to apply for an extension, which in the present climate presents a risk.
       –    Worst case is that project could hypothetically be halted in April 2008.
       –    Active cash management at HIA, NRC level.
•    Schedule slippage?
       –    Due to a slow start (already happened at the beginning).
       –    Concerns over procurement processes.
               •   This risk is retired. Major procurement contracts are in place except for power supply.
       –    Technical progress slower than the deliberately aggressive initial schedule.
       –    “Re-spins” will present additional schedule risk.
•    Inadequate contingency?
       –    The contingency fractions are much smaller than most high-tech projects.
       –    Cost risk will be reduced quickly once prototypes are tested.
       –    Exchange-rate changes have been favourable to date.
•    Inflation not being recognized in funding profile?
      – Inflation is a corrosive influence.
    N ational R esearch Council   Conseil national de recherches
    Canada                        Canada                                    P. Dewdney EVLA Review - May 2006   36
                                Technical Program Risks
• Technical risk is currently at a maximum
     – Much design effort and prototype expenditure has taken place.
     – Prototype hardware is being fabricated (or about to be fab’d), but not
       received/tested.
• But …
     – Considerable design effort expended to reduce technical risk.
             • Finely divided testing schemes for circuit boards – every path can be checked
               independently.
             • Correlator chip underwent an independent test and verification process, including a
               major simulation campaign after the “place-and-route” stage.
             • A separate Design for Manufacturability (DFM) analysis done for circuit boards –
               results in a major reduction in risk.
• Formal system reliability analysis has been done, and will be updated.
• Funds and design effort has been expended to minimize technical risk.
     – We are optimistic and confident that technical risk is reasonably low.

  N ational R esearch Council   Conseil national de recherches
  Canada                        Canada                           P. Dewdney EVLA Review - May 2006   37
                                                Descoping

• The correlator is difficult to split, once
  designed, and saving is inefficient.
• Have not reconsidered descoping options since
  the budget is currently “under control”.
• If the previously-mentioned non-technical
  risks become imminent concerns, then de-
  scoping options will have to be revisited.


 N ational R esearch Council   Conseil national de recherches
 Canada                        Canada                           P. Dewdney EVLA Review - May 2006   38
                                        Project Summary
• Are we meeting the required schedule?
   – We are sticking with the original delivery date, although there is
     now some squeezing of activities towards the end.
• Are we over budget at this stage?
   – Budget is slimly allocated, but we are not over budget.
• Are we planning to deliver on what we said we would
  do?
   – Yes, with minor improvements.
• What are the major risks at this stage?
   – Hypothetical funding difficulty in 2008.
   – Technical risks should be reduced this year as prototypes are
     tested.

   N ational R esearch Council   Conseil national de recherches
   Canada                        Canada                           P. Dewdney EVLA Review - May 2006   39
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