Major power converter issues for the restart of PS & SPS machines and their experimental areas in...

Major power converter issues for the restart of PS & SPS machines

and their experimental areas in 2006

Jean-Paul BURNET for AB/PO

PS&SPS days 18-19 January 2006

Principal changes to power converter

for the restart of PS & SPS machines


Principal changes to power converter

for the restart of PS & SPS machines


http://ab-div.web.cern.ch/ab-div/

Two mains subjects:

system modifications, repairs and upgrades

changes to AB/PO support for Accelerator Operations

Two main topics:

System modifications, repairs and upgrades

Changes to AB/PO support for accelerator operations

Two main topics:




18-01-2006 JP BURNET 3


LINAC2

• 14 power converter replacements for dipole magnets Power converter type: MINIDISCAP ±20A / 600V (capacitor discharge) Identical to power converter for the injection line steering PSB No change for operation

LTB.DHZ10 LBE.DHZ10 LTL.DHZ10 LTE.DHZ10 LTB.DVT10 LBE.DVT10 LTL.DHZ10 LTE.DVT10 LTB.DHZ20 LTB.DVT20 LTB.DHZ30 LTB.DVT30 LTB.DHZ40 LTB.DVT40

Control: - MIL 1553 (idem previous power converters) -Timing TG8: FW Forewarning

W WarningST StartME Measure ( beam)

- NAOS

18-01-2006 JP BURNET 4


PSB

• 10 power converter replacements for dipoles BTY Line (to ISOLDE)

Power converter type: MINIDISCAP +/-20A / 600V (capacitor discharge)

Identical to other dipoles in BTY line

No change for operation

BTY.DHZ118 BTY.DVT118





Installed in racks 535, 536 BCER

Control:- MIL 1553 (old power supplies: ST single transceiver) -Timing TG8: FW Forewarning

W WarningST StartME Measure (beam)

- NAOS

18-01-2006 JP BURNET 5


PSB

• 16 new 4 quadrants switch-mode power converters. Same type as for LEIR with full range current control including 0A.

BTY.QFO 179 ±150A / ±50V

BTM.QNO 05 ±250A / ±50V BTM.QNO 10 BTM.QNO 20 +1 Spare

8 * QSTRIP ±100A / ±100V + 1 spare

4 BDL ±50A / ±200V + 1 spare

We are a little bit late on this project but we are confident to be on time!

Control:- MIL 1553 (old power supplies: ST single transceiver) - NAOS

18-01-2006 JP BURNET 6


PSB main power converter

• Replacement of MCR “Grounding key” system by a software Veto (like PS machine)• Veto will permit or not to pulse the PSB• Not enough to work on magnets => consignation required

• Regulation upgrade• A new digital regulation will be tested at the start-up• The goal is to improve the current stability and reproducibility of the converter for the LHC beam• If the results are better than with the previous regulation, it may be used in operation. To be discuss in March with M. BENEDIKT• Swap from new to old regulation in less than 1 hour

18-01-2006 JP BURNET 7


PS main power converter

Earth fault on the rotor of the generator during 2004 run due to a fan blade

18-01-2006 JP BURNET 8


PS main power converter

• The motor and generator rotors were replaced by their spares in 2005The spare rotors are the original ones (1969)The spares are unused since 1975 ~Mechanically and electrically tested at no load without any problem

First tests with magnets in February!!!

• The broken rotor will be repaired at CERN by SIEMENS. This shall be done for July.• In case of trouble, a rotor replacement required at least 1 month.• Many others preventive maintenance works had been done on auxiliaries equipments (transformer, rheostat, voltage suppressor…) and will not affect operation.

18-01-2006 JP BURNET 9


PS• PI.SMH 26 injection ions from LEIR New power converter 16.5 kA / 1.7 kV for new injection septum magnet Capacitors discharge type with third harmonic and active filter, installed in bat. 367

• PR.BSW 26 for ions in PS New power converter 30A / 100V. 2 magnets in series type 205 (section 22 and 30). Capacitors discharge type, installed in bat. 365

• PR.SMH57 New switch-mode power converter 10 kA / 8V (5 * 2kA in //, LHC type) Replaces the old thyristor + linear transistor converter. Identical performance and no change for operation.

• PR.SMH61 New switch-mode power converter 1600A / 16V (2 * 2kA / 8V in series) Same remarks as for SMH57.

• PFW no change! New PFW with 5-current mode will be commissioned in 2007.

18-01-2006 JP BURNET 10


All BTRAIN systems are now under AT/MTM responsibility!!!

LEIR, BOOSTER, PS, AD, SPS

Contact : Didier CORNUET AT/MTM/RM

See talk Thursday 8:30

18-01-2006 JP BURNET 11


TT2

• 6 new thyristor converter for the new quadruples of the TT2 line. Renovated power converters as for LEIR machine. 4 converters have a bleeder system to permit the operate at zero current.

Converters Type Imax Imin Umax F16.QDE163 RB10CBLb 300A -10A 250V F16.QDE207 RB10CBLb 450A -10A 250V F16.QDE210 RB10CBL 400A 40A 250V F16.QDE213 RB10CBLb 400A -10A 250V F16.QFO215 R14CBL 500A 50A 300V F16.QDE217 RB10CBLb 300A -10A 250V

Control:-MIL 1553-NAOS

18-01-2006 JP BURNET 12


SPS

• 8 renovated converters. Renovation of the power part with new electronic crate as for the SPS renovation project (1998-2002)

Refurbished converters Type Imax MAL 2512M R20 1600A QTAF 2410M R14 500A QNLF 2405M R14 500A QTLD 2509M R14 500A QNLF 2511M R14 500A MAL 2512M R20 1600A QNLF 2104 R14 500A New converter MAL 1029 N05Lx 800A (45V instead of 35V)

• 2 new converters type N07 (125A / 125V) for the new profile monitor in BA5 MDHW51633M MDHW51634

18-01-2006 JP BURNET 13


SPS

• SPS main power converters - A new acquisition system for the DCCT will be tested at start-up but it probably can’t be used before the migration of the ROCS under FESA- Michel JONKER (AB/CO) will manage the software modification

• SPS north experimental area- The tests of the new junction crate based on FESA will be done before the start-up - The old junction crate, PCA, CAMAC and NODAL will be used for 2006 operation

- The operation may be affected by the water leaks of the BA80 roof if no work is done before the start-up!!!

Two mains subjects:



Second topic


Second topic



18-01-2006 JP BURNET 15

Changes to AB/PO operation support

• 2004 One standby service for PS complex covered by CERN Staff One standby service for SPS including experimental areas covered by First Line contract (S077)

• 2005 One standby service for PS complex covered by FSU AB11

Up to 2005, the trend was to externalize all the standby services (PS + SPS) due to lack of resources. With the end of LHC construction and new posts, PO staff can now assume the standby services for LHC injectors and LHC ring.

• 2006 One standby service for the LHC injectors covered by CERN Staff One standby service for the experimental areas covered by FSU AB11

• 2007-2008 One more standby service for LHC ring and experiments will start

18-01-2006 JP BURNET 16

LHC injectorsLINAC2LINAC3BOOSTERLEIRPS ringTT2SPS ringTI2-TI8CNGS

Standby service covered by staff


18-01-2006 JP BURNET 17

Experimental Areas

ISOLDEPS EAST AREAAD(NTOF)SPS NORTH AREACTF3LHC Test benches

Standby service covered by AB11


18-01-2006 JP BURNET 18


• To facilitate the coordination with operation, a PO coordinator was nominated per machine (see slide 15). This person is the first point of contact with AB/PO.

• PO machine coordinators:

– LINAC 2 & 3 Stéphane JOFFRE– LEIR Jean-Marc CRAVERO– BOOSTER Martin VEENSTRA– PS Jean-Paul BURNET– TT2 Christophe MUTIN– SPS Aux PS Marcel ROYER Main PS Christophe MUGNIER–TI2 TI8 and CNGS Roger GENAND

18-01-2006 JP BURNET 19


• To facilitate the coordination with operation, a PO coordinator was nominated

per experimental area (operated by the FSU AB11, see slide 16).

This person is the first point of contact with AB/PO.

• PO experimental area coordinators:

– AD Gilles SIMONET

– ISOLDE Julien PARA-LOPEZ

– REX-ISOLDE Nicolas DAVID

– CTF3 Roger GENAND

– EAST AREA Jean-Luc BLANC

– NORTH AREA Yves GAILLARD

Two mains subjects:



Summary

• No major change in hardware• Big worry about the PS rotating machine• More faults expected at the start-up due to the long shutdown

• Two standby services- One for LHC injectors- The other for experimental areas

• One AB/PO coordinator per machine

Summary

• No major change in hardware• Big worry about the PS rotating machine• More faults expected at the start-up due to the long shutdown

• Two standby services- One for LHC injectors- The other for experimental areas

• One AB/PO coordinator per machine


Major power converter issues for the restart of PS & SPS machines and their experimental areas in...

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