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Commissioning Plan of BEPCII Storage Rings. J.Q. Wang April 26, 2006. Outlines. 1. Commissioning of devices and control system 2. Commissioning of Backup Scheme without SCQ and detector 3. Commissioning of BEPCII with SCQ 4. Commissioning of BEPCII with detector

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1.Commissioning of devices and control system

2. Commissioning of Backup Scheme without SCQ and detector

3. Commissioning of BEPCII with SCQ

4. Commissioning of BEPCII with detector

5. Luminosity increase strategy

6. Commissioning of SR mode with SCB

1 commissioning of devices and control system preparation for beam commissioning
1. Commissioning of devices and control system--Preparation for beam commissioning

May to Sept, 2006

1.1 Central control system installation and test

1.2 Devices and Local control system installation & debug

1.3 Integral system debug off-line

1.4 Integral system debug on-line

1.5 Set up operation manual and Training the operators

1.6 Final check for starting beam commissioning

1.1 Central control system installation and test

From May to July 2006

  • Network system configuration and test
  • SUN V880 server & cluster configuration and test
  • EPICS system and development environment installation and test
    • EPICS Base and Extensions
    • SAD development environment
    • CVS,NFS system and third party software
  • PC/Linux EPICS system and application installation and test
  • Above computers are located in Central Control Room (CCR)
1 2 devices and local control system installation debug from may to july 2006
1.2 Devices and Local control system installation & debug (From May to July 2006)
  • All of local control system installation and integration with devices and the systems start up at local PCs
  • Including
    • Vacuum control system
    • PS control system
    • Cryogenic control system
    • RF control system
    • Interlock system
  • Tasks - installation,wiring test, individual device test , calibration, system integration of hardware and software
  • Timing system of storage ring will develop continuallyand it will be done by the end of August
  • Console OPI and wall display test in CCR
1 3 integral system debug off line
1.3 Integral system debug off-line

From 20th of July to the end of August

  • Integration of central control system and local control system
  • Start up control system on console in CCR
  • Access local IOCs on console in CCR
  • Control function debug and test
  • Application software test
  • Data Archiving test
  • Alarm handler test
  • Access safety control test
  • Wall display test
1 4 integral system debug on line
1.4 Integral system debug on-line

In September

  • Debug and test control system with real equipment on console in CCR
  • Start up whole system at console
  • Control/monitor subsystem device including PS, VA, RF, BI, Timing and linac devices
  • Control function test
  • Final parameter calibrations
  • Interlock system debug with device
  • After test, fix all of software and hardware, including save programs, configuration parameters, IOC database…, and make backup version.
content for device control debug on line
Content for Device & Control debug on-line

Transport line:

Magnet and power supply: check the polarity and strength of magnet with power supply, do standardization, 8 hours stability check, central control operation, power supply safety interlock check,

Beam instrumentation: Beam profile monitor operation from CCR, communication between IOC of BPM and central console

content for device control debug on line1
Content for Device & Control debug on-line

storage ring:

Magnet and power supply: from May, after installation of one quarter is finished, the vacuum and power supply with be tested with local control system.

For power supply and magnet: the polarity and strength should be checked, Standardization, long term stability, water cooling system, temperature monitor system.

RF: Display and adjust the voltage, frequency, phase in CCR

Vacuum: Control of valve from CCR, display vacuum status, temperature monitors of vacuum chamber

Beam instrumentation: IOC(BPM) with console, DCCT, BCM, PR


Inspection sheets for device check before power on and commissioning procedures of magnets, power supply with control system (Co-signed by group leaders)


Commissioning Procedure (cont’d)

Engineer: Head of Storage ring: Chief engineer:


1 5 set up operation manual and training the operators
1.5 Set up operation manual and Training the operators

In September

  • Set up operation manual for each subsystem (local and central control)
  • Introduction to the beam optics for operation and the procedure of commissioning
  • Set up safety control rules for personal and devices, particularly, the interlock radiation protection system.
1 6 final check for starting beam commissioning
1.6 Final check for starting beam commissioning

Oct. 5 to 9, 2006

  • The polarity of each magnet consists with the setting from control system
  • All the vacuum valves open, all the PRM up
  • The temperature monitor systems for vacuum chamber and the power supply cables are OK.
  • Safety interlock system responses properly.
2 schedule of beam commissioning
2 Schedule of Beam Commissioning

2006/10/10-2007/02/23 commissioning of backup scheme

2007/02/24-2007/03/31 move SCQ into the IR

2007/03/11-2007/08/24 commissioning without detector

2007/08/25-2007/09/18 move BESIII detector into the IR

2007/09/19-2007/10/14 commissioning with detector

2007/10/15- HEP operation with detector

2008/10/15 31032cm-1s-2

2 1 backup scheme without scq
2.1 Backup scheme without SCQ
  • Due to the delay of SC components in IR, a backup scheme to use two normal conducting dipoles instead of SC magnets package will be adopted, the main purpose:
    • to start the beam commissioning of the BEPCII rings in the last quarter of this year. and if available, to provide beam to SR users
    • to commission both the electron and positron ring to check the parts with room temperature magnets are OK.
commissioning schedule of backup scheme
Commissioning schedule of Backup Scheme

2006/10/10-2006/11/08 30 commissioning for SR mode

2006/11/09-2006/12/28 50 commissioning beam lines and SR operation

2006/12/29-2007/01/25 28 commissioning e- ring

2007/01/26-2007/02/22 28 commissioning e+ ring

2 2 commissioning for sr mode
2.2 Commissioning for SR mode

2.2.1 Transport line to Ring (3 days)

  • Check the e- transport line is OK: energy, orbit
  • From linac exit, one by one, get the beam signal from PR & BPM, till the last
  • Adjust the orbit to make the best BCT transport efficiency
  • Energy spread from Linac check and optimized with movable masks on the transport line
  • Get the signal on PR near the injection point
  • Set the right strength of lamberston magnet
  • Get the beam signal on the first BPM in the ring with oscilloscope

Beam signal from upstream BPM as trigger

Beam signal from downstream BPM

2.2.2 First turn of electron (no RF) and Accumulation (with RF) (3-7 days)
  • Similar to transport line, one by one adjust the orbit along the ring with BPM
  • Tune the timing of kicker is OK with BPM in the R4 region
  • With beam signal be observed on all BPMs on the ring, adjust the kicker strength to get 100s turns
  • Adjust RF voltage to get more turns, till accumulation
2.2.3 Commissioning Instrumentation and control system with beam (2 weeks)
  • Beam accumulated up to 5mA, available for BPM works properly,
  • Commission the diagnostics with beam: BPM system, tune measurement system, SRM system
  • Commission the control system with beam:
    • Debug with hardware (PS, TM, RF)
    • Debug application software: set Optics, fit optics
  • Tune RF freq. ; Do COD correction
  • Measure the beta functions to check the optics
  • Response matrix measurement
  • Beta function correction and optics optimization
2 2 4 commissioning the sr mode 10 days
2.2.4 Commissioning the SR mode (10 days)
  • RF voltage increase to 1.2MV,
  • Single bunch current of 5mA, ramping energy from 1.89GeV to 2.5GeV, set wigglers
  • COD correction for SR mode @2.5 GeV
  • Commissioning of Multi-bunch injection, BCM system
  • Increase the beam current up to 100mA according to vacuum condition,
  • Increase beam current further for instability observation with SRM, spectra analyzer, and tune the feedback system
2 3 commissioning the beam line and sr operation
2.3 Commissioning the beam line and SR Operation

Nov. 9 to Dec. 28

  • Local bump adjust for SR beamlines (20 days)
  • Provide beam to SR users (30 days), I=100mA, beam lifetime: 10 hours

If the radiation safety allowed, Meantime to commission the positron transport line.

2 4 commissioning for e ring without scq
2.4 Commissioning for e- ring without SCQ

Dec 29,2006 – Jan. 25, 2007

(Can be shorten or canceled if SCQ ready in early )

  • Purpose: to check the inner half of e- ring without SCQ.
  • Injection into the e- ring and store beam up 5mA,
  • Commission the BPM in the inner half ring, do COD correction
  • Measure the tune, beta function to check the lattice is OK (the Q magnets)
2 5 commissioning for e ring without scq
2.5 Commissioning for e+ ring without SCQ

Dec 29,2006 – Jan. 25, 2007

(Can be shorten or canceled if SCQ ready in early)

  • Purpose: to check the inner half of e+ ring without SCQ
  • Commissioning transport line of e+: trace the beam signal of BPM (or PR, PMT) one by one till to the ring injection point,
  • Measure the the energy spread and emittance of the beam with adjustable slot and BCT, then optimize them with linac
2 5 commissioning for e ring without scq cont d
2.5 Commissioning for e+ ring without SCQ (cont’d)
  • Similar to the first turn of electron injection, adjust the orbit, the timing and strength of kicker to store beam. Due to the weak beam, profile monitor (or PMT) as the supplement to BPM, may be used to commission the first turn of positron beam.
  • With 5mA beam, commission the BPM in the inner half ring, do COD correction.
  • Measure the tune, beta function to check the lattice is OK (the Q magnets)
3 commissioning bepcii with scq but without detector
3 Commissioning BEPCII with SCQ but without detector

2007/02/23-2007/03/31 37 move SCQ into the IR

2007/04/01-2007/04/20 20 commissioning e- ring

2007/04/21-2007/05/10 20 commissioning e+ ring

2007/05/11-2007/06/09 30 commissioning for collision mode

2007/06/10-2007/08/23 75 commissioning for colli. mode with large current

3 1 commissioning e ring with scq
3.1 Commissioning e- ring with SCQ


  • For easy injection and accumulation, an injection mode (betay@IP=2 cm; x/y=6.6/5.6, easy tuning with large DA)
  • With 5mA bunch, measure the orbit, Tune the RF freq., COD correction, measure the tune, the beta functions,
  • Response matrix measurement, correct beta functions,
  • Multi-bunch injection
  • Tuning the lattice to collision mode betay@IP=1.5 cm; x/y=6.53/5.58
3 2 commissioning e ring with scq
3.2 Commissioning e+ ring with SCQ


  • Procedure Similar to e- ring commissioning, while PR and PMT will be used for first turn injection and accumulation.
3 3 commissioning the collision without detector
3.3 Commissioning the Collision without detector
  • 2007/05/11-2007/06/09
  • Commissioning of application software and beam diagnostics for IR tuning
  • Tuning collision
    • Longitudinal: RF phase scan to observe the time signals from 8-pole BPM near the IP to get the right IP.
    • Horizontal beam-beam scan, and IR orbit correction with 4-bump,
    • Vertical beam-beam scan and orbit bump
  • Coupling measurement and correction with skew quard.
3 4 improvement on beam current and luminosity
3.4 Improvement on Beam current and Luminosity


  • Optics optimization on beta functions at IP, coupling correction, orbit adjustment at IP
  • Tuning the movable mask for lower background
  • Tuning kicker for top-off injection
  • Beam current increase with multi-bunch, up to 300mA, beam instability observation (including ECI) and tuning the feedback system,

Goal: Luminosity up to 5-101031cm-2s-1 with sufficient low background

4 colliding with detector
4 Colliding with detector

(2007/08/25-2007/09/18 BESIII rolled in)

2007/09/19-2007/10/18, after BESIII rolled in

  • Coupling compensation with anti-solenoid and skew quad
  • IR tuning with detector
  • Control background

Goal: Luminosity recovered to 5-101031cm-2s-1

5 strategy to improve luminosity and hep operation
5 Strategy to improve Luminosity and HEP operation
  • Current increase with more bunches (or smaller bunch spacing)
  • Tune near half integer
  • Low beta_y @IP, small p lattice with short bunch length
  • Reach 31032cm-1s-2 by the end of 2008
  • Studies on continuous injection
  • Further increase of luminosity to 101032cm-1s-2 within 3 years.
6 commission the sr mode with scb and sr operation
6 Commission the SR mode with SCB and SR operation
  • In the year of 2007 and 2008, we will provide beam time to SR users.
  • The SR mode with SCB will be commissioned, as well as the beamlines
  • The estimation of time period for the beam commissioning schedule refers to experience of KEKB and PEPII.
  • During the commissioning period, it’s inevitable some fault or mistakes of hardware system, so the schedule should be adjusted accordingly
  • Several task forces formed for commissioning the critical systems: cryogenic, SCQ, SC RF
  • Prof. Jijiu Zhao prepared the plan of control system
  • Prof. Nan Huang prepared the draft of the commissioning schedule
commissioning of kekb
Commissioning of KEKB

1998 May Commission fully upgraded linac and transport lines

1998 Nov. 30 KEKB installation complete

1998 Dec. 13 HER beam first stored

1999 Jan. 14 LER beam first stored

1999 Jan. 26 First beam-beam collisions

1999 March 26 Luminosity of 1.2x10**31

1999 May BELLE installed

2000.04 1.0*10^33

2000.07 2.0*10^33

commissioning of pepii
Commissioning of PEPII
  • 1997 June HER installation complete
  • 1997 June 16 HER beam first stored
  • 1997 June e+ injection transport studies
  • 1998 January LER injection (part turn)
  • 1998 July 10 LER construction complete
  • 1998 July 16 LER beam first stored
  • 1998 July 23 First collisions
  • 1998 Dec. 8 8 x10**31 luminosity
  • 1998 Feb. 8 5.2 x 10**32 luminosity
  • 1999 May BABAR detector installed
  • 1999 Aug. 8 x 10**32 luminosity