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Factory Operations and Plans SLAC

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					   SLAC Accelerator Department




B-Factory Operations and Plans

                John T. Seeman
  Assistant Director of the Technical Division
     Head of the Accelerator Department
        DOE PEP-II Operations Review
                 June 15, 2004
      SLAC Accelerator Department


                                Topics
•   Mission
•   Operations Organization and Planning
•   The PEP-II Collider
•   Risks
•   PEP-II Future Upgrades
•   Safety and Reliability
•   Conclusions
     SLAC Accelerator Department


                       SLAC‟s Mission
• To provide a respectful and safe environment to promote
  research.
• To operate, maintain and upgrade all SLAC accelerator
  systems to maximize their high energy physics output.
• To develop the conceptual framework and technology
  needed for the next generation of accelerators and to
  advance the science of accelerator physics.
• To manage the construction and commissioning of new
  accelerator systems.
• To contribute to the development of the technology needed
  for the next generation of detectors.
• To provide Laboratory support and services in the areas of
  our scientific engineering and technical expertise.
• To perform the research and development necessary to
  accomplish our mission effectively.
  SLAC Accelerator Department




                                                       SLAC Director



                                                                         ES&H
           ES&H                                                        Coordinating
          Division                                                       Council


      Support Services                                                   Citizen
 Operational Health Physics                                            Committees
      Radiation Physics
     Waste Management                                                  Operating
Safety, Health, and Assurance                                           Safety
                                                         Associate
                                                                       Committee
                                                         Directors
          Advice
   Subject Matter Experts
                                                         Division
                                                         Assistant
                                                         Directors
                                  Division Safety
                                Officer/Coordinators
                                                        Department
                                                          Heads


                                Department Safety         Group
                                Officer/Coordinators     Leaders


                                                        Supervisors


                                                        Personnel
SLAC Accelerator Department


Accelerator Department Organization
      SLAC Accelerator Department


Other TD Departments contributing to PEP-II
 • Mechanical Design
 • Mechanical Fabrication (MFD)
 • Electronics and Software Engineering (ESD)
    – Power supplies, diagnostics, RF and controls
 • Metrology
    – Alignment and magnetic measurements
 • Site Engineering and Maintenance (SEM)
    – Power, water and buildings
 • Advanced Computation (ACD)
    – Wakefield and HOM calculations
 • Klystron
    – Klystron production and RF
 • Accelerator Research A (ARDA)
    – Accelerator theory and bunch feedback
    SLAC Accelerator Department


           Current Accelerator Program
• The PEP-II B-Factory provides high energy
  physics data to the BaBar detector running
  about 10 months per year.
  – Upgrade plan is to increase the peak luminosity
    by a factor of about 2.6 over the next few years.
• Linac beams are provided to other programs
  using linac pulses not used by PEP-II
  injection.
  – The linac runs at 30 Hz. PEP-II uses, on
    average, only about 10 to 15 Hz.
SLAC Accelerator Department


                    Beam Lines
       SLAC Accelerator Department


                     PEP-II e+e- Collider
                                                        BaBar Detector
•    Use the SLAC linac as
    upgraded for the SLC for the
    injector.




                                       HER         Feedbacks      LER
                                       RF          Diagnostics    RF
                                       476 MHz                    476 MHz

     C = 2200 m                      3.1 GeV positrons x 9 GeV electrons
SLAC Accelerator Department


         The PEP-II e+e- asymmetric collider
        SLAC Accelerator Department

               PEP-II Interaction Region Components near BaBar




                                                                 LER

HER




BaBar



              Collision point
       SLAC Accelerator Department


                 Contributors to PEP-II
•   SLAC
•   LBNL
•   LLNL
•   With help from:
     – IHEP, Beijing, China
     – BINP, Novosibirsk, Russia
     – INFN, Frascati, Italy
     – CEA, Saclay, France
     – IN2P3, Paris, France
     – Caltech
     – BNL
     – Many people from the BaBar Collaboration
     – Visitors from CERN, DESY, Cornell, FNAL, KEK, …
       SLAC Accelerator Department


    Internal PEP-II Reviews and Meetings
• Daily (seven days) 8:00 am Program meeting
• Daily (seven days) 8:15 am BaBar/PEP-II meeting
• Five days/week Maintenance meetings (8:15 am)
• Twice/week PEP-II Group meetings
• Weekly Tech Division Construction Project reviews
• Weekly PEP-II / BaBar Strategy Meeting
• Semi-monthly PEP-II Evaluation Meeting with Upper
  SLAC Management
• Weekly Shut-Down Planning meetings starting three
  months before the down, continuing during the down.
• PEP-II End of Run “Lessons Learned Briefings”
• PEP-II Workshops on Performance
     – 1) December 15-16, 1999
     – 2) December 6-7, 2000
     – 3) January 30-February 1, 2002
         SLAC Accelerator Department


                    External PEP-II Reviews
•   Annual DOE Site Visits
•   Annual DOE Program Reviews
•   Semi-annual Scientific Policy Committee
•   Semi-annual Experimental Physics Advisory Committee
•   Semi-annual BaBar International Finance Committee
•   Quarterly BaBar Collaboration meetings
•   PEP-II Machine Advisory Committee
     –   1) Jan 4-6, 1995
     –   2) August 24-25, 1995
     –   3) April 11-13, 1996
     –   4) January 6-8, 1997
     –   5) November 10-13, 1997
     –   6) December 14-16, 1998
     –   7) October 9-11, 2003
     –   8) April 15-17, 2004
     –   9) December 13-15, 2004 (planned)
      SLAC Accelerator Department

Continuous Injection (Trickle Charge) Both Beams




                                          Luminosity



                                          LER I+


                                          HER I-
SLAC Accelerator Department



 Peak luminosity of 9.21 x 1033

                                  Record
                                  Peak
                                  Luminosity
SLAC Accelerator Department


             Daily Integration Record


                                        710/pb
              SLAC Accelerator Department


                  Examples of PEP-II Performance Measures


                  Peak PEP-II Luminosity (x1E33) per Month
10


 9

 8


 7

 6


 5


 4

 3


 2

 1


 0
                   Dec-99




                                     Dec-00




                                                       Dec-01




                                                                         Dec-02




                                                                                           Dec-03
     Jun-99




                            Jun-00




                                              Jun-01




                                                                Jun-02




                                                                                  Jun-03
SLAC Accelerator Department
SLAC Accelerator Department




                                                 >90/fb!


              Actual delivered luminosity 90 fb-1
                        Actual delivered luminosity




                                                      Goal set in July 2003
     SLAC Accelerator Department


             Overall Parameters and Goals

                                     Best in     Future
Parameter      Units        Design
                                     collision   2007 goal
    I+          mA           2140      2450        4500      Twice design!

    I-          mA            750      1550        2200
 Number
                             1658      1588        1720
 bunches
   by*           cm          15-20      11          8
    xy                       0.03    0.05, 0.07 0.055-0.08
Luminosity     x1033          3.0      9.21         24
Integrated
                pb-1          130      710         1800
lumi / day

   Over three times design                Over five times design!
     SLAC Accelerator Department


                          PEP-II Risks
• Items which could cause prolonged downs or sustained
  reduced luminosity for PEP-II:
   – AC power costs (See G. Loew‟s talk) (~1 month)
   – Many PEP-II klystrons (total 11 klystrons now and adding 4 more)
     are reaching 30k+ hours (10% loss in luminosity per lost klystron,
     1 year to build, 600 k$ each, 4 in production now, start 2 more?)
   – Support tube vacuum chambers (Be-bellows, B1R, B1L, Q1R and
     Q1L, ~7 month down w/o spare, ~4 month with spare, B1+Q1
     spares sum to 2000 k$.)
   – HER and LER Chopper Bulk Power Supplies (~1 month, new
     ~1000 k$)
   – Injection septa for HER and LER (~1 month, spare parts for 200
     k$)
   – Shortage of Physics (Engineering) staff for Machine Development
     delays luminosity growth rate (44 accelerator shift takers in 1999,
     12 in June 2004. The 12 are also involved with upgrade designs)
      SLAC Accelerator Department


                   PEP-II Staffing Issues
• The operation of PEP-II is thin (lean) on support staff due
  to staff reductions from past reduced budgets.
  (We do still try very hard!)
   – Experimental Accelerator Physicists are down by 40%.
     (+5 people would be very helpful)
   – Area Technical Managers down by 33%. (+2 would help)
   – PEP-II Mechanical Engineers were down by 40% but has
     recovered by 25%. (Thanks SPEAR-3!) (+2 would help)
   – RF Engineers/physicists were down by 50% but recovered by
     25%. (+2 would help)
   – Electrical Engineers are down by 30%. (+3 would help)
   – Vacuum, Mechanical, and Electrical Technicians are down by
     about 20%. (+10 to +20 would help)
   – Accelerator Operator numbers steady. (Good!)
   – Part-time outside help has gone up substantially! (NLC, BaBar,
     LBNL, SPEAR, Universities) (Many thanks!)
       SLAC Accelerator Department


PEP-II Long Range Beam Parameters Goals
•   April 2004: 2.5A x 1.5 A by*=11 mm 1555 bunches L=9.2E33
•   July 2004: 2.6A x 1.6 A by*=10 mm 1600 bunches L=10E33
•   June 2005: 3.3A x 1.8 A by*=9 mm 1700 bunches L=15E33
•   July 2006: 3.9A x 2.0 A by*=8 mm 1720 bunches L=20E33
•   July 2007: 4.5A x 2.2 A by*=8 mm 1720 bunches L=24E33

• Director‟s goals:
• With good integration reliability and trickle injection:
• 115 fb-1 more integrated from Summer 2003 to Summer
  2004.
• 530 fb-1 total integrated by Fall 2006.
• About 1.7 to 2.0 ab-1 integrated by Fall 2010.
               SLAC Accelerator Department


                  Future luminosity increase factors

Parameter            Present Future          Luminosity Hardware and
                                             gain ratio work needed
LER current          2450 mA 4500 mA                      Two RF stations, new
                                                          vacuum chambers
HER current          1550 mA 2200 mA              1.61    Two RF stations, new
                                                          vacuum chambers
by*                  11 mm       8 mm             1.38    HER higher tunes, RF
                                                          & power supplies work
xy                   0.068 L     0.079 L          1.16    Tune plane, coupling, &
                     0.045 H     0.053 H                  IR work
Parasitic Dx         3.22 mm 3.80 mm              1.08    B1 magnet change
Total                                            x 2.78
        SLAC Accelerator Department


             PEP-II Future Luminosity Parameters
        bx   by    ex    ey     n      I      sx*      sy*      Lumi    xx      xy

Units   cm   mm    nm    nm            mA     micron   micron   x1E33
                                              s        s
LER     43   11    30    1.3    1588   2450   114      3.8      9.21    0.065   0.069
now
LER     28   8     60    1.35   1715   4500   130      3.3      24.0    0.071   0.078
2007
HER     33   11    60    1.4    1588   1450   141      3.9      9.21    0.045   0.045
now
HER     28   8     60    1.4    1715   2200   130      3.3      24.0    0.050   0.056
2007
               SLAC Accelerator Department


                           PEP-II Bunch Length Factors


         I      RF         Number     Total   Je    Alpha       ns     sz        Bunch    sz
                stations   cavities   Volts                            natural   lenth-   final
                                                                                 ening
Units   mA                            MV                                mm                mm

LER     2400       3          6       3.8     2.0   0.00123   0.0286    11.0     1.08     11.9
now
LER     4500       5         10       7.7     2.0   0.00123   0.0407    7.7      1.16     9.0
2006
HER     1400       8         26       15.8    2.0   0.00241   0.0482    11.1     1.05     11.6
now
HER     2200       10        26       18.7    2.2   0.00170   0.0441    8.1      1.10     9.0
2006
        SLAC Accelerator Department


 AIP Upgrades for SLAC Lehman “Base 2%” June 2004
Fiscal Year   PEP-II       PEP-II     PEP-II         Linac, DR,   Total
              Radio-       Vacuum     Magnet, PS,    Gun, BSY,    (k$)
              Frequency    System     Instruments,   FFTB, PPS
              RF System               Feedback
2003          2234         300        766            0            3300


2004          2948         1396       2356           100          6800


2005          3248         1980       772            0            6000


2006          3332         1413       1255           0            6000


2007          1813         2537       1365           285          6000


2008          1087         500        500            3913         6000


2009          0            0          0              6000         6000
      SLAC Accelerator Department


Expected PEP-II Delivered Integrated Luminosity
Delivered as of        SLAC Field Task
                                         SLAC Lehman “2% Base”
end of fiscal year     Proposal

    FY2004                   253/fb             253/fb

    FY2005                     392                392

    FY2006                     545                534

    FY2007                     855                802

    FY2008                    1216               1130

    FY2009                    1577               1462

    FY2010                    1939               1795
      SLAC Accelerator Department


          Over all PEP-II Down Schedule 2004-2010

• 2004 down:               August 1 to October 15 for BaBar IFR.
• 2005 down:               July 1 to December 31 for BaBar IFR
                           and PEP-II support tube.
•   2006 down:             August-September.
•   2007 down:             August-September.
•   2008 down:             August-September.
•   2009 down:             August-September.

• Every downtime is planned in great detail.
       SLAC Accelerator Department


Citizen Committees and Subject Matter Experts

•   Safety Overview
                                     • Radiation Safety Officer
•   Radiation Safety
•   Non-Ionizing Radiation Safety    • Laser Safety Officer
•   Hazardous Experimental           • Electrical Safety Officer
    Equipment
•   ALARA                            • Fire Marshal
•   Electrical Safety                • Crane Inspector
•   Earthquake Safety                • ESH Environmental
•   Fire Protection Safety             Protection Department
•   Hoisting and Rigging Safety
•   Environmental Safety             • ESH OSHA Experts
                                     • ESH Industrial Hygienists
                                     • Emergency Management
                                       Coordinator
    SLAC Accelerator Department


            Documentation Hierarchy

               Accelerator Department Operations Directives


    Administrative Documents              Program Control Documents
  example: Administrative Checklists           Beam Time Requests
  total number of documents: (6)                      (17)

Accelerator Operations Documents               Safety Documents
  Operations Linac Turn-on Checklist            Search Procedures
                 (71)                                  (41)

     Maintenance Documents                    Training Documents
             Call-in Lists                 ASO-2 Qualification Workbook
                  (4)                                  (19)

   Documentation Documents
   AD Documentation Archive Plan
               (5)
     SLAC Accelerator Department

Accelerator Department Safety and Operations
                Documents
Accelerator Operations BAS Key and Lock Procedures   Hot Sheet
Accelerator Operations BAS Instructions              Incident Response Procedures
Alarm Response Procedures                            Laser Safety Procedures
Arcs PPS Log                                         Linac etc Building Emergency Plan
Beam Containment System Procedures                   Linac PPS Log
BSOIC Certification Checklists                       Logging Requirement for Work…
BSY PPS Log                                          MCC Building Manager Checklists
CID PPS Log                                          MCC Emergency Plan
DRIP/DR PPS Log                                      MCC Key Safe Checkout
Electrical Hazard Test Procedures                    PEP PPS Log
Emergency Notification Form                          PEP PPS Overview
Entry and Exit Procedures                            PLS Keys Procedures and Log
Equipment Checkout Log                               Positron PPS Log
ESA PPS Log                                          PPS Interlock Checklists
FFTB PPS Log                                         PPS Zone Maps
Final Focus PPS Log                                  Safety Configuration Control
Fire Alarm System Reference Manual                   Safety Inspection Checklists
Guidelines for Work in SLAC Accelerator Housings     Search Procedures
Gun Test Lab Safety Procedure                        VVS Remote Turn-on Procedure
High Voltage Test Facility Safety Procedures         Warning Response Procedures
       SLAC Accelerator Department


              ARTEMIS (Maintenance )
•   ARTEMIS (Accelerator Remedy Trouble Entry and Maintenance
    Information System) is an Oracle database with a Remedy interface,
    accessible over the internet by everyone involved with SLAC accelerator
    maintenance.
•   Operators report problems as they occur by making entries in ARTEMIS.
•   Repair work is launched immediately if the problem is inhibiting the
    scheduled accelerator program.
•   New ARTEMIS entries are reviewed at the daily maintenance meeting.
    Open questions are addressed and jobs are assigned.
•   Jobs may be assigned to the Standby Maintenance List (SML), or to the
    Repair Opportunity Day (ROD) list, or marked for the next long down
    time.
•   Jobs are tracked using ARTEMIS until they are finally closed.
SLAC Accelerator Department


             ARTEMIS Example
             Sample from the June 10 maintenance meeting.
SLAC Accelerator Department


    Assessment of Accelerator Time
       SLAC Accelerator Department


General In-depth Accelerator Self-Assessments
 •   2004: „Linac‟ (includes DRs, BSY, ESA)
 •   2003: GTL, GTF, HVTF, ASTA
 •   2002: SPEAR
 •   2001: NLCTA
 •   2000: PEP II
 •   1999: „Linac‟
       SLAC Accelerator Department


                             Conclusions
• PEP-II has reached a luminosity of 9.2 x 1033/cm2/s with trickle
  injection.
• PEP-II has integrated 710 pb-1 in one day.
• PEP-II has delivered a total of over 230/fb so far!
• Near term and long range upgrades are going well.
• Progress for upgrades towards 2.4 x 1034 are on track.

• PEP-II collider has a good safety record.
• We work daily to make it better.
• We have internal and external reviews of our program.
• We set yearly performance goals and track them daily-weekly-
  monthly.
• We perform regular in-depth safety reviews of all our accelerators.
• We are actively working to make our accelerator more reliable.

				
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