Documents
Resources
Learning Center
Upload
Plans & pricing Sign in
Sign Out

CXI Detector Status_ Cost _amp; Schedule

VIEWS: 12 PAGES: 26

									                 CXI Detector Status, Cost & Schedule
                                          Niels van Bakel
                                         LCLS Detector Physicist
                                              June 3, 2009




CXI Detector                         1                             Niels van Bakel
CXI FIDR - June 3 2009                                   nielsvb@slac.stanford.edu
                             Outline


    • Technical Scope
          – Basic detector module (Cornell)
          – Detector assembly
          – Data acquisition
    • Major Interfaces
    • Design Reviews
    • Cost & Schedule



CXI Detector                       2                    Niels van Bakel
CXI FIDR - June 3 2009                        nielsvb@slac.stanford.edu
                                            Team

  • Gruner Group at Cornell University
        - Biophysics, Soft Condensed Matter, and X-ray Detector Development Lab
              • Sol Gruner; project leader
              • Hugh Philipp, Mark Tate, Marianne Hromalik, Lucas Koerner
  • SLAC PPA Electrical & Software Engineering
        - Gunther Haller, Ryan Herbst, Amedeo Perazzo, Chris O’Grady, Matt Weaver,
          Dieter Freytag
  • SLAC PPA Mechanical Engineering
        - Martin Nordby, Matthew Swift
  • LUSI CXI team
        - Sebastien Boutet - CXI Instrument Scientist
        - Paul Montanez - CXI Lead Engineer




CXI Detector                                          3                               Niels van Bakel
CXI FIDR - June 3 2009                                                      nielsvb@slac.stanford.edu
                                     LDAC

    • LCLS Detector Advisory Committee:
          – Gareth Derbyshire (chair): Rutherford Appleton Laboratory, UK
          – Erik Heijne (interim chair): CERN, Switzerland
          – Eric Eikenberry: PSI, Switzerland
          – Heinz Graafsma: DESY / XFEL, Germany
          – Ronnie Shepherd: LLNL, USA
          – Lothar Struder: MPI / Semiconductor Laboratory, Germany
          – Albert Walenta: University of Siegen, Germany
          – Yoshiyuki Amemiya: University of Tokyo, Japan
    • Track technical progress, check if detector specs meet the
      original requirements and involved in technology choices
    • Other topics e.g. DAQ and system integration
    • LDAC report

CXI Detector                                     4                              Niels van Bakel
CXI FIDR - June 3 2009                                                nielsvb@slac.stanford.edu
                              CXI Requirements
   •    The Coherent X-ray Imaging instrument will image nanoscale objects,
        including single or small clusters of bio-molecules
   •    The detector needs to image the 2D diffraction pattern with a large area
        detector with minimum dead area
   •    With the intense (1012 ph) and short (100 fs) LCLS pulses at 120 Hz
        one needs integrating detectors with fast readout (< 8 ms)



                                               CXI spec.

                         Readout noise            < 0.3 ph

                         Full well capacity       1-103 ph

                         Pixel size               110 μm

                         Number of pixels     750 (10242).

                         Energy                   4 - 8 keV


CXI Detector                                  5                            Niels van Bakel
CXI FIDR - June 3 2009                                           nielsvb@slac.stanford.edu
                         CXI Detector
                                           •   Detector in vacuum 10-7
                                               Torr
                                           •   Resolution depends on
                               LCLS beam
                                               the sample-detector
                                               distance
                                                – Requires translation
                                                  stage 600 mm
                                                – Remote Aperture
                                                  resizing 1 - 10 mm
                                           •   Cooling 10 - 25 °C




        ~110
        microns




CXI Detector                       6                            Niels van Bakel
CXI FIDR - June 3 2009                                nielsvb@slac.stanford.edu
                              Test results

           Low gain: ‘Full Well’ ~ >2500 8 keV x-rays




CXI Detector                             7                        Niels van Bakel
CXI FIDR - June 3 2009                                  nielsvb@slac.stanford.edu
                         Characterization of Detector




      8 keV x-rays, 75 micron pinhole.



CXI Detector                                                      Niels van Bakel
                                                                      12
CXI FIDR - June 3 2009                                  nielsvb@slac.stanford.edu
                                      CXI Assembly
                                      Simulations changed design
                                      Packaging
                                        Bump & wire bonding                              Cold strap
                                        Assembly tools
                                        Alignment & position stability
                                      Interface to DAQ
                                        1.1 Gbps per quadrant




                                                                                                      Quadrant raft




               2x2 detector package
               (4 per quadrant)



                                                                         Digital board


                   2x1                                   Analog board




CXI Detector                                              9                                        Niels van Bakel
CXI FIDR - June 3 2009                                                                   nielsvb@slac.stanford.edu
                         Front View—1 mm Aperture




CXI Detector                           10                     Niels van Bakel
CXI FIDR - June 3 2009                              nielsvb@slac.stanford.edu
                         Front View—6 mm Aperture




CXI Detector                           11                     Niels van Bakel
CXI FIDR - June 3 2009                              nielsvb@slac.stanford.edu
                         Front View—9.4 mm Aperture




CXI Detector                            12                      Niels van Bakel
CXI FIDR - June 3 2009                                nielsvb@slac.stanford.edu
                         CXI 2x1 Module Packaging


                                      Front End Board
                               •One board per detector
                               •Part of detector assembly




                                                    ASIC’s on back
                                                    side of detector




                                                          Carrier board

                             Pixel array detector

                                                Flex cable—bent
                                                back out of the way




                                2x1 Detector Assembly Jig
                               •Diode-ASIC assembly
                               bonded to carrier board
                               •2x1 assembly held for wire
                               bonding and testing

CXI Detector                                                 13                     Niels van Bakel
CXI FIDR - June 3 2009                                                    nielsvb@slac.stanford.edu
                            LDAC Recommendations
• Increase interaction with user community
      – Close interaction with Instrument Scientists
      – Team leader meetings & Instrument workshops
• Cornell progress
      – Focus on ‘full’ array with 16 ASICs
            • Since prototype detector functions according to specs
      – Foresee adequate cooling for stable operation
      – Need a 2x1 module operational in May 2009
            • Progress towards a first tested module appears to be relatively slow
      – The 2x1 modules to be delivered to SLAC after full testing at Cornell.
            • It is recommended to discuss this in detail, so that resources can be found, if needed
            • Assemble only known good die (KGD)
      – The basic components for a full system are available
            • Recommended that the desirable redesign of the CMOS chip is discussed in the
              framework of a future, follow-up project, so that priority can be given to the schedule of
              delivery of detector modules this Fall 2009
CXI Detector                                             14                                 Niels van Bakel
CXI FIDR - June 3 2009                                                            nielsvb@slac.stanford.edu
                         Cornell Schedule




CXI Detector                       15                 Niels van Bakel
CXI FIDR - June 3 2009                      nielsvb@slac.stanford.edu
                                        Cornell Plan

 • Technical Addendum-D (5/1/08-4/30/09, $1,235k):                       Needs extension
       – Measurement of the existing prototypes with x-rays
       – Identification of areas for improvement
       – Identification of areas that need to be developed for full-array implementation
       – Design and redesign of circuitry as driven by steps 2 and 3.
       – Simulation of circuits to be included in next submission
       – Low-level physical layout of circuits
       – Verification of layout
       – Submission of design to MOSIS, including second full-lot submission.
       – Design and fabrication of test electronics for a particular submission
       – Work with the SLAC science team to define geometrical format and packaging
         of detector




CXI Detector                                      16                              Niels van Bakel
CXI FIDR - June 3 2009                                                  nielsvb@slac.stanford.edu
                                   Cornell Plan
 • Technical Addendum-D (5/1/08-4/30/09, $1,235k):                     Needs extension
       – Test and calibrate final detector; develop calibration procedures.
       – Design and fabricate hybrid compatible with the packaging scheme
       – Write test reports and documentation
       – Design & fabricate 2nd large detector diode; development of 2x1 module
       – Design high speed data transfer and storage for final detector compatible with
         LCLS DAQ
       – Bump bond final detector diodes and ASICs
       – Prepare report/ conduct review
       – Perform radiation tests
       – Assembly of final detector; work with SLAC on shielding and EMI
       – Test vacuum compatibility of detector module




CXI Detector                                     17                             Niels van Bakel
CXI FIDR - June 3 2009                                                nielsvb@slac.stanford.edu
                           CXI vs. Cornell milestones

        • CXI Schedule (WBS 1.3):
              – CXI 05710 FDR Cornell Detector packaging in Feb 16 2009
              – CXI 07125 RCV: Cornell detector from LCLS in April 24 2009 (needs update)
              – CXI 07220 AVAIL: Ready for installation, CXI detector stage in Oct 18 2010
              – CXI 00450 COMP: CXI Early Science Components Installation in May 12 2011
                 • Conservative, driven by KB mirrors
              – CXI 00540 COMP: CXI Final Installation Complete in November 11 2011

        • Cornell Schedule:
              – XE254_2160 2D detector received at SLAC in November 2009

        • Cornell 2D PAD detector installed February 2010 →
          optimistically CXI ready in December 2010
              – Early installation in hutch 3 in September 2010




CXI Detector                                           18                             Niels van Bakel
CXI FIDR - June 3 2009                                                      nielsvb@slac.stanford.edu
                                Detector - DAQ Interface
                                                                 Beam Line
                                                                   Data
                                      L1: Acquisition




              Detector + ASIC   FEE




                                         Timing         L0: Control    L2: Processing   L3: Data Cache


       •    Detector - Experiment Specific
       •    Front-End Electronics - Local configuration registers and state machines,
            FPGA used to transmit to DAQ system
       •    Timing info from the accelerator timing system, distributed to the
            detectors and L1 boards
       •    L0 Control: operate DAQ, control a run & configure the detector,
            telemetry monitoring
       •    Beam Line Data is beam quality information, used to veto events
       •    L1 DAQ: Acquire FEE data, detector calibration, event building (beam
            line data), image processing, veto, 10 Gb/s ethernet


CXI Detector                                                19                                       Niels van Bakel
CXI FIDR - June 3 2009                                                                     nielsvb@slac.stanford.edu
                                       Detector DAQ




       •   Each quadrant connects to external interface board via LVDS signals
             – 125Mhz Clock
             – Reset (Optional)
             – Command
             – 2 Data Output Lines
       •   Interface board interfaces to RCE via 2 PGP links
       •   Data Rates
             – 1 ASIC = 16 bits * 185 rows * 194 cols * 120Hz = 68.9Mbs
             – 1 Quadrant = 16 ASICS * 68.9Mbps = 1.1Gbps
             – 1 Chamber = 1.1Gbps * 4 = 4.4Gbps
CXI Detector                                             20                                Niels van Bakel
CXI FIDR - June 3 2009                                                           nielsvb@slac.stanford.edu
                       Register Command Data Interface

    Detector specific blocks   PCDS blocks

                                                                                Fiber




                                                                  Transceiver




                                                                                        Transceiver
           RegAddr[23:0]
        RegDataOut[31:0]                               MGT                                            MGT    L1 Node
                  RegReq
                                    Register
                   RegOp             Block
                  ReqAck
                 RegFail
         RegDataIn[31:0]
                                                         • Interface defined between FEE and L1
         CmdCtxOut[23:0]
                                    Command    PGP
         CmdOpcode[6 :0]
                                     Block     Block         -   Common interface among different
                   CmdEn
                                                                 experiments
           FrameTxEnable                                     - Provide data, command and register
              FrameTxSof
        FrameTxDataWidth             Data                      interfaces
              FrameTxEof             Block
             FrameTxEofe                                     - Custom point-to-point protocol (Pretty Good
       FrameTxData[15:0]
                                                               Protocol, PGP) implemented as FPGA IP
                         FEE FPGA
                                                               core
                                                             - FEE FPGA assumed to be Xilinx family with
                                                               Multi Gigabit Transceivers (MGT)‫‏‬



CXI Detector                                                     21                                              Niels van Bakel
CXI FIDR - June 3 2009                                                                                 nielsvb@slac.stanford.edu
                         Mechanical Interface




                                          •   Mechanical interface
                                          •   Detector stability
                                          •   Thermal & Cooling
                                              interface
                                          •   Vacuum requirements
                                          •   Electrical interface
                                          •   Power requirements
                                          •   Controls interface


CXI Detector                         22                        Niels van Bakel
CXI FIDR - June 3 2009                               nielsvb@slac.stanford.edu
                         Detector Testing at SLAC
                                       SLAC Front End Development
                                       board, ‘Digital’ & Analog PCB for
                                       CXI
                                       Additional testing; feedback to
                                       Detector Groups
                                       Improves integration into LCLS &
                                       LUSI instruments



     SLAC custom made DAQ board (L1)
     available for detector groups
     Start testing at SLAC
       Bench tests
       SSRL beam tests
       Detector test lab; x-ray tube




CXI Detector                           23                             Niels van Bakel
CXI FIDR - June 3 2009                                      nielsvb@slac.stanford.edu
                         Summary & Outlook

      • Technical progress
      • Schedule updated to meet CXI
      • CXI Detector ready for early scientific
        experiments:
            – CXI Detector phase I                Nov 09
            – CXI Detector phase II               Feb 10
            – CXI Installation at SLAC Complete   Dec 10

            – CXI Early Science                   ....




CXI Detector                            24                    Niels van Bakel
CXI FIDR - June 3 2009                              nielsvb@slac.stanford.edu
                         Summary & Outlook

      • Technical progress
      • Schedule updated to meet CXI
      • CXI Detector ready for early scientific
        experiments:
            – CXI Detector phase I                Nov 09
            – CXI Detector phase II               Feb 10
            – CXI Installation at SLAC Complete   Dec 10

            – CXI Early Science                   ....




CXI Detector                            24                    Niels van Bakel
CXI FIDR - June 3 2009                              nielsvb@slac.stanford.edu
CXI Detector             25             Niels van Bakel
CXI FIDR - June 3 2009        nielsvb@slac.stanford.edu

								
To top