1 BROOKHAVEN SCIENCE ASSOCIATES Accelerator Commissioning F. Willeke Accelerator Systems Director...

1 BROOKHAVEN SCIENCE ASSOCIATES

Accelerator Commissioning

F. WillekeAccelerator Systems Director

NSLS-II Program Advisory Committee MeetingFebruary 8-9, 2011


Overview

• 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


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


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.

Commissioning


Commissioning Schedule


LINAC Commissioning

LINAC MilestonesApr 2010 Contract AwardJul 2010 Preliminary Design ReviewNov 2010 Final Design ReviewApr 2011 LINAC Frontend DeliveryMay 2010 Start Frontend commissioning

(radiation device, no ARR)Sep 2011Start LINAC deliveryOct 2011 Start LINAC InstallationJan 2012 Start LINAC Commissioning


Authorization Basis Schedulefor 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


Commissioning StagesLINAC 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

BoosterLBTL commissioning by NSLS-II staff in parallel to booster integrated testingBooster commissioning by vendor (vendor’s responsibility), participation of NSLS-II staffBSTL (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


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


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


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 made.

• 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 proceed.


Storage Ring Commissioning Modules

COMMSIONING PART IEstablish Initial Beam Operation, 5 modulsCheck out Beam Instrumentation 4 modulsCheck out Safety Functions 3modulesFine tuning of Beam Optics 7modulesFunctionality Tests 1modulsFine Tuning of Orbit and Emittance 3modulesSynchrotron Radiation Measurements 4mod.High Intensity Studies 10 modules

COMMSIONING PART IISafety Related Measurements 2 modules ID Integration 8 x 7 modules Preparation of User Operation 3 modules

70 commissioning modules

Each needs ~4 shifts on average

~300 shifts

100 days

Operational efficiency is assumed 50%

Need 200 days of commissioning


Storage Ring Commissioning Part IEstablish Initial Beam OperationObtain stored beamAdjust and verify RF parameters first Orbit Correctionfirst iteration of correcting chromaticity and coupling first iteration of obtaining acceptable injection efficiencyCheck out Beam Instrumentationestablish beam monitor calibration with local bumpschecking intensity monitorschecking out loss monitorschecking out emittance monitorsCheck out Safety FunctionsCheckout top-off safety functionsCheck-out machine protection systemCheck out BCS and ALARA functionalityFine tuning of Beam OpticsBeam Optics Checks and correction (Response matrix, phase advance, coupling measurements)Beam based alignmentmeasurement of chromatic distortions and correctionnonlinear dynamics related measurements and corrections (D.A., amplitude dependent tune shift, width of resonances, higher order chromaticity)measure 1st and 2nd order momentum compaction factormeasure damping distribution

Functionality TestsFast orbit feed-back testFine Tuning of Orbit and EmittanceOrbit correction to micron leveldispersion free steering and orbit correctionvertical emittance tuning Synchrotron Radiation Measurements Measurement of power deposition s and power loadcheck of temperature monitor systemcheck of vacuum interlockcheck of assumptions on absorber and mask temperatures, monitoring and coolingHigh Intensity StudiesSet up of high efficient injection Set-up of RF feedback and fine tuning of feedback parameters and LLRFSingle Bunch Intensity Limit measurementsbunch lengthening by 3rd harmonic cavity beam lifetime vs bunch length and bunch intensity studyBCS and ALARA studies with high intensity Vacuum conditioning beamRF conditioning with beamtransverse damper testStudy of high multi-bunch intensity limitations


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 shiftwill 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


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


Needed for: Trend Analysis-Magnet AcceptanceLattice ModelingOperation

Data to be stored in IRMIS Data Base and accessed by high level controls applicationsConditioning cycle (Imin, Imax, number of cycles), hysteresis information for each magnet typeData 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)•

Example for Searchable Data Base for Magnet Properties


Applications needed for CommissioningOperation Softwareoverall status pagestatus, alarm and warning monitorpermit system monitor and controldata logger and data displayelectronic logbookOperations Softwareaccelerator store/restoreInjection Controlpower supply controlRF controlfast orbit feedback controlfast transverse damper controlfront-end monitoring and controlmachine protection displ &contrmagnet temp. interlock dspl & contrscraper and collimatorssystem turn-on, system shutdown

Utility Controltunnel temperature and humidity monitormechanical utilities status and controlelectrical utilities status and controlsequipment enclosure monitorwater cooling system displaycontrols network monitorAccelerator physics applications •static orbit corrections, first turn steering, •chromatic correction, •response matrix measurements, •phase advance measurements, •beam base alignment measurement,•bpm test programs, •beam optics measurement, •beam based alignment of sextupoles, •analysis on nonlinearities•dispersion measurement and correction, •closed Orbit bump page

Major Subsystem ControlPower supply page RF monitor and controlVacuum display and control Cryogenics system display and controlpulsed magnet monitor and controlinjection element display and control Insertion device controlFront-end control and status Beam DiagnosticsBeam Orbit page withBeam current history and lifetimebunch intensity display and historybeam emittance displayTiming system display and controlSynchronization system displ & contrTune display and controlTemperature monitoring displaySafety Systemspersonal protection system status equipment protection display and controlbeam containment display and controltop-off status monitor

Work on LINAC & Booster Applications started


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 hardwarecontrol room LAN is accessible from the accelerator tunnel and from the mezzanine.


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


Planning for Early Operations During Commissioning

Labor needs to perform operations & maintenance of completed systems

• 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,


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 systemo Magnet system, power supply systems, calibration, etco Check beam opticso 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.


Summary

• 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

1 BROOKHAVEN SCIENCE ASSOCIATES Accelerator Commissioning F. Willeke Accelerator Systems Director...

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