Accelerator Commissioning by liaoqinmei


									Accelerator Commissioning

                   F. Willeke
          Accelerator Systems Director
  NSLS-II Program Advisory Committee Meeting
               February 8-9, 2011
                       1                       BROOKHAVEN SCIENCE ASSOCIATES
• Overview of Commissioning Activities in the last 12 months
• Overall Commissioning Schedule
• Authorization Procedure (Reminder)
• Injector Commissioning
• LINAC Commissioning
• Storage Ring Commissioning
• Pentant Tests with Beam
• Data and Document needed for commissioning

                          2                        BROOKHAVEN SCIENCE ASSOCIATES
          2010 Activities on Commissioning Planning
Aug 2009: Start concept of structuring the authorization base (Steve Hoey)
Nov 2009: First version of comprehensive assumptions document (FW)
Dec 2009: Presentation of preliminary Commissioning Plan to PAC
Jan 2010: Commissioning Task Force to develop the assumptions document into commissioning
          planning document
Feb 2010: Presentation of updated Commissioning Planning at DOE Review
May 2010: AS workshop with sessions on commissioning involving between all stake holders of AS
Jun 2010: Series of planning meetings between each subsystem group and controls
          group to update requirements on controls for testing, commissioning and operations
Sep 2010 As hoc taskforce on data and documents needed for commissioning
Oct 2010 Presentation of commissioning plan to ASAC
Dec 2010 Assigning a LINAC commissioning coordinator (R. Fliller) and forming a
         LINAC commissioning taskforce consisting of accelerator physicists, operators, ES&H group
Jan 2011 Accelerator Physics submits a requirement document on magnet data
         needed for commissioning and operation

                                                  3                              BROOKHAVEN SCIENCE ASSOCIATES
particular mode of accelerator operation with beam aiming:
• test the function of accelerator hardware and software with beam,
• verify in particular the proper functioning of the equipment protection system,
• verify the adequacy of radiation safety shielding, area radiation monitoring,
ALARA system to minimize radiation
• check the integrity and the consistency of the subsystems as built
• develop refined settings of the hardware components to allow efficient
injection, and storage of accelerator beams with good stability, beam intensity,
the advertised beam parameters, and good beam lifetime.
• condition accelerator hardware for optimum performance (vacuum, RF)
• develop and document the procedures which are necessary to operate the
accelerator routinely and to perform continuous improvement and development.

                                        4                        BROOKHAVEN SCIENCE ASSOCIATES
Commissioning Schedule

          5              BROOKHAVEN SCIENCE ASSOCIATES
             LINAC Commissioning
LINAC Milestones
Apr 2010     Contract Award
Jul 2010     Preliminary Design Review
Nov 2010     Final Design Review
Apr 2011     LINAC Frontend Delivery
May 2010     Start Frontend commissioning
             (radiation device, no ARR)
Sep 2011     Start LINAC delivery
Oct 2011     Start LINAC Installation
Jan 2012     Start LINAC Commissioning

                             6              BROOKHAVEN SCIENCE ASSOCIATES
             Authorization Basis Schedule
               for Linac Commissioning
                         Major Milestones
•   Feb 10   Distribute draft SAD and ASE to NSLS-II staff for comment
•   Feb 24   Conduct review meeting to discuss comment
•   Mar 17   Distribute revised SAD/ASE to LESHC
•   May 1    Complete LESHC Review
•   May 24   Complete Review and approval by Lab DDO
•   Jun 15   Submit to DOE BHSO
•   Jul 1    Appoint AAR team (DDO)
•   Jul 13   Obtain DOE approval for Commissioning Linac
•   Aug’11   ARR Team begins tracking of Linac commissioning status
•   Nov’11   ARR team conducts formal review
•   Jan’12   Following resolution of comments, Linac receives
             permission to begin commissioning

                                  7                       BROOKHAVEN SCIENCE ASSOCIATES
                         Commissioning Stages
LINAC Frontend (gun pre-buncher) early delivery, commissioning and early tests by NSLS-II staff in
RF Lab, Special bunch-modes

LINAC commissioning by the vendor (responsible)
LtBTL (LINAC building part ) commissioned by NSLS-II-Staff , primary + secondary beam dump
LBTL commissioning by NSLS-II staff in parallel to booster integrated testing
Booster commissioning by vendor (vendor’s responsibility), participation of NSLS-II staff
BSTL (part in booster tunnel) performed by NSLS-II staff with project responsibility
Storage Ring Commissioning Phase 1 (without ID)
BSTL commissioning and injection set up ; the storage ring beam optics; adequacy of correction
systems; adequacy of safety and ALARA systems; efficient injection; adequacy of beam
instrumentation; orbital stability; RF set up and stability; RF conditioning; cryogenic stability; beam
stability; vacuum integrity and conditioning; high intensity operations
Storage Ring Commissioning Phase 2
Integrate Insertion devices

                                                     8                                  BROOKHAVEN SCIENCE ASSOCIATES
               Assumptions on Conditions

• accelerator tunnel air conditioned; tunnel temperature, humidity within specified range.

• final survey and alignment shortly before start commissioning (ground settling)

• heavy duty construction activities completed

• global utilities available: electrical, de-ionized water, chilled water, and liquid N2

(CF deliverables)

• installation of girders and magnets completed ~1/2 year start of commissioning.
 cable conduits and openings in the tunnel walls will be properly closed and shielded

                                             9                                BROOKHAVEN SCIENCE ASSOCIATES
    SR Subsystem Status at Commissioning
•   integrated testing complete
•   Injectors and transfer lines commissioned
•   personal safety system and interfaces thoroughly tested
•   equipment protection system is fully implemented and tested via the control system.
•   magnets systems installed well before commissioning,
•   precision alignment shortly before commissioning
•   insertion devices will not be installed
•   power supply systems are complete, technical interlocks have been properly tested
•   vacuum system has a vacuum of at least 10-7 mbar
•   two sc RF cavities installed driven by a single 310kW transmitter station.
•   full suite of beam diagnostics is installed and tested
•   water cooling systems have been installed tested
•   timing system implemented
•   control system is fully implemented
•   relational database is fully functional
•   all application programs deemed necessary for commissioning available
•   injection systems have been installed and tested
•   fast orbit feedback has been implemented
•   transverse feedback damper system installed and tested

                                              10                               BROOKHAVEN SCIENCE ASSOCIATES
Radiation Safety during Commissioning
• radiation protection systems installed and fully tested, no provisory solutions allowed, no
exception possible.
• initial beam intensity very small compared to nominal (0.1%).
• area monitors readings low intensity will be extrapolated to the next step in beam intensity.
• extrapolation is reviewed and analyzed at each level of intensity before the next step in intensity is
• initial high intensity studies: assume losses e much larger than under optimized normal
conditions may need special (temporary controlled radiation areas)
• beam containment system needs to be tested with beam, location of beam losses identified, beam
is lost dominantly in the extra shielded confirmed
• clear and unambiguous procedures operating staff needs to be trained to follow these procedures
before operations with continuous injection of high charge (top-off, high intensity operation) can

                                               11                                 BROOKHAVEN SCIENCE ASSOCIATES
  Storage Ring Commissioning Modules
Establish Initial Beam Operation, 5 moduls    70 commissioning modules
Check out Beam Instrumentation 4 moduls
Check out Safety Functions 3modules           Each needs ~4 shifts on
Fine tuning of Beam Optics 7modules           average
Functionality Tests 1moduls                   ~300 shifts
Fine Tuning of Orbit and Emittance 3modules
Synchrotron Radiation Measurements 4mod.      100 days
High Intensity Studies 10 modules
                                              Operational efficiency is
COMMSIONING PART II                           assumed 50%
Safety Related Measurements 2 modules
ID Integration 8 x 7 modules
Preparation of User Operation 3 modules       Need 200 days of

                                      12                      BROOKHAVEN SCIENCE ASSOCIATES
               Storage Ring Commissioning Part I
Establish Initial Beam Operation                                Functionality Tests
Obtain stored beam                                              Fast orbit feed-back test
Adjust and verify RF parameters                                 Fine Tuning of Orbit and Emittance
first Orbit Correction                                          Orbit correction to micron level
first iteration of correcting chromaticity and coupling         dispersion free steering and orbit correction
first iteration of obtaining acceptable injection efficiency    vertical emittance tuning
Check out Beam Instrumentation                                  Synchrotron Radiation Measurements
establish beam monitor calibration with local bumps              Measurement of power deposition s and power load
checking intensity monitors                                     check of temperature monitor system
checking out loss monitors                                      check of vacuum interlock
checking out emittance monitors                                 check of assumptions on absorber and mask temperatures,
Check out Safety Functions                                      monitoring and cooling
Checkout top-off safety functions                               High Intensity Studies
Check-out machine protection system                             Set up of high efficient injection
Check out BCS and ALARA functionality                           Set-up of RF feedback and fine tuning of feedback
Fine tuning of Beam Optics                                      parameters and LLRF
Beam Optics Checks and correction (Response matrix,             Single Bunch Intensity Limit measurements
phase advance,                                                  bunch lengthening by 3rd harmonic cavity
coupling measurements)                                          beam lifetime vs bunch length and bunch intensity study
Beam based alignment                                            BCS and ALARA studies with high intensity
measurement of chromatic distortions and correction             Vacuum conditioning beam
nonlinear dynamics related measurements and corrections         RF conditioning with beam
(D.A., amplitude dependent tune shift, width of resonances,     transverse damper test
higher order chromaticity)                                      Study of high multi-bunch intensity limitations
measure 1st and 2nd order momentum compaction factor
measure damping distribution
                                                               13                                    BROOKHAVEN SCIENCE ASSOCIATES
                   Commissioning Staffing

• commissioning will be organized in 3 8hr shifts per day and seven days per week.
• commissioning labor budgeted within the project
• commissioning requires operation of already commissioned subsystem
(injectors, cryogenics, utilities)
• commissioning requires the involvement of all accelerator physicists (budgeted) ,
subsystem experts (budgeted) and operators
• workload of off-hour shifts will be shared between all high level staff
• engineers and technicians on call during commissioning
• control room manned with 1 accelerator physicist ~33 weeks. @ 16000 hr (budgeted)
• involvement of engineers less regular, will depend on the commissioning program
• initially, one machine operator present every shift
will gradually develop into a mode with 2 operators and no accelerator physicists
• present NSLS controls group will develop to take over NSLS-II operations starting
in 2012 with operating the LINAC

                                           14                           BROOKHAVEN SCIENCE ASSOCIATES
Commissioning Information and Documentation
 • semi-formal meetings of 15 min at shift change ( coming and going shift crews)
 seamless transition from one shift to the next, communicate and discuss fine-tuning of program.
 3 shifts per day and thus there will be three such meetings.
 weekly commissioning meeting will summarize the commissioning results.
 opportunity to optimize the commissioning program and direction.
 • weekly commissioning meetings will be documented including all material presented.
 • commissioning carried out in modules (ca 200) each requires written plan:
        the purpose,
        the goal,
        supporting documents,
        results of calculations necessary to carry out the module
        estimate on the needed machine time
        labor resources required.
 • results of each module will be documented
 • raw data will be stored in an organized and accessible way
 • evaluation, resulting set-points, procedures, parameters will be documented
 • commissioning report will be published at the end of commissioning

                                               15                              BROOKHAVEN SCIENCE ASSOCIATES
 Example for Searchable Data Base for Magnet Properties
Needed for:           Trend Analysis-Magnet Acceptance
                      Lattice Modeling
Data to be stored in IRMIS Data Base and accessed by high level controls applications
Conditioning cycle (Imin, Imax, number of cycles), hysteresis information for each magnet type
Data on individual magnets:
•Transverse Integrated nominal field component vs. Operating Current,
•Longitudinal Field Profile: nominal field component vs. Operating Current
•Dipole Field Maps, 11 vertical planes, 5 horizontal planes, 25 transverse planes
•Effective Length vs Operating Current
•Integrated Higher-order multipoles vs Operating Current
•Correctors: x / y / skew quad calibration constants as function of excitation
•Integrated field as function of mode of operation
•Dipole correction circuit calibration and hysteresis at full field
•Survey data: magnet displacement and roll as installed on girder
•Girder survey data as installed
•Survey data of magnets in ring (plans is to derive values from wire meas.+ girder survey)
                                              16                            BROOKHAVEN SCIENCE ASSOCIATES
     Applications needed for Commissioning
Operation Software                    Major Subsystem Control                    Utility Control
overall status page                   Power supply page                          tunnel temperature and humidity monitor
status, alarm and warning monitor     RF monitor and control                     mechanical utilities status and control
permit system monitor and control     Vacuum display and control                 electrical utilities status and controls
data logger and data display          Cryogenics system display and control      equipment enclosure monitor
electronic logbook                    pulsed magnet monitor and control          water cooling system display
Operations Software                   injection element display and control      controls network monitor
accelerator store/restore             Insertion device control                   Accelerator physics applications
Injection Control                     Front-end control and status               •static orbit corrections, first turn steering,
power supply control                  Beam Diagnostics                           •chromatic correction,
RF control                            Beam Orbit page with                       •response matrix measurements,
fast orbit feedback control           Beam current history and lifetime          •phase advance measurements,
fast transverse damper control        bunch intensity display and history        •beam base alignment measurement,
front-end monitoring and control      beam emittance display                     •bpm test programs,
machine protection displ &contr       Timing system display and control          •beam optics measurement,
magnet temp. interlock dspl & contr   Synchronization system displ & contr       •beam based alignment of sextupoles,
scraper and collimators               Tune display and control                   •analysis on nonlinearities
system turn-on, system shutdown       Temperature monitoring display             •dispersion measurement and correction,
                                      Safety Systems                             •closed Orbit bump page
                                      personal protection system status
                                                                                    Work on LINAC & Booster
                                      equipment protection display and control
                                                                                    Applications started
                                      beam containment display and control
                                      top-off status monitor
                                                           17                                       BROOKHAVEN SCIENCE ASSOCIATES
Accelerator Control Room during Commissioning
 accelerator control room is the location where:
 • operators operate the accelerator
 • operators coordinate with technical staff about technical difficulties and interventions
 • accelerator experiment are carried out
 • a logbook on accelerator operations is kept and maintained,
 • information in case of an emergency is to be obtained and such information will be delivered to
 • an access point is established which manned 24hr a day 7 days a week
 • day-to-day coordination between accelerator and experimental floor are exchanged,
 • shift-change briefing meetings are held,
 • first hand information on the status of the accelerator is available
 • the responsibility for operating the accelerator safely within the safety regulations resides
 • routine safety measures are coordinated (LOTO)
 • preparation of the accelerator for operations is coordinated after an interruption
 • computer provide an optimized selection of delays for quick overview of accelerator status
 • an emergency stop button and other special installation (LAN, site-wide audio) are installed
 functionality very different between commissioning and operation
 at commissioning assumed that the control room is close to the accelerator hardware
 control room LAN is accessible from the accelerator tunnel and from the mezzanine.

                                                18                                BROOKHAVEN SCIENCE ASSOCIATES
                      Commissioning Budget

 Commissioning labor adequately budgeted
 Has not been updated since CD2
 Need to pull forward commissioning resources to start storage ring commissioning in FY13

                                                19                             BROOKHAVEN SCIENCE ASSOCIATES
   Planning for Early Operations During Commissioning
• Complete systems needed for Booster Commissioning: LINAC, LtBTL, Injector Mech/Electr. Utilities
• Complete systems needed for Storage Ring Commiss.: LINAC, Booster (incl. all subsystems), Transfer-
lines, M/E Utilities, Cryo-System, Lq. N2 system,
            Labor needs to perform operations & maintenance of completed systems

                                                    20                          BROOKHAVEN SCIENCE ASSOCIATES
                       Schedule Mitigation Plans
   Superconducting RF is a schedule item with high technical, thus schedule risk:
    Alternative plan/fall back position for commissioning being developed:
    install 2nd booster cavity (PETRA 7-cell)
    install sc cavities in the 2 months shutdown planned for installation of insertion devices.
    this also would have the advantage to avoid contamination of superconducting cavity by poor
    early vacuum conditions.
Status: detailed plans under development
   Alternative Commissioning Schedule
•   Installation and Integrated testing is now performed in parallel, pentant by pentant
•   This offers the possibility to inject beam into pentant 1,2,3,4,5 (no circulation)
•   Beam operation at night or on week ends envisioned
     o   Check out BPM system
     o   Magnet system, power supply systems, calibration, etc
     o   Check beam optics
     o   Check orbit correction
•   This could be a major time saver in case there are unexpected or hidden problems which could
    be solved in parallel to installation and integrated testing
Status: This was just proposed and the implications are being explored and discussed.

                                                             21                      BROOKHAVEN SCIENCE ASSOCIATES

•   Detailed plans for commissioning have been developed in FY10/FY11
•    Assumptions for various commissioning phases have been well defined.
•   Commissioning activities are well understood.
•   Requirements such as staffing, documentations, data base, applications,
    and control room are well developed and planned accordingly.
•   A near term commissioning schedule has been updated and the overall
    commissioning schedule will be kept current as progresses made.
•   Commissioning budget in the current baseline will be updated
•   Schedule risks for commissioning period are well understood and
    mitigation plans are actively explored.
•   Accelerator Systems will be ready for commissioning

                                     22                       BROOKHAVEN SCIENCE ASSOCIATES

To top