LSC – 16 August 2013 - M. Pezzetti – Cryogenics 1.

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Presentation transcript:

LSC – 16 August M. Pezzetti – Cryogenics 1

LSC – 16 August M. Pezzetti – Cryogenics 2 CCS configuration principles AMB - No radiation tolerant. -20 m limitation distance between compressors and AMB electronic.

LSC – 16 August M. Pezzetti – Cryogenics 3 Radiation sensitivity I/O card (Schneider) CCS cryo Control cabinets  Electro-pneumatic valves positioners Electrical devices Expected devices sensitivity based on experience…..  PROFIBUS DP/PA couplers and links Active Magnetic Bearing controllers & PLCs (Schneider)

S. Claudet - 22 Nov'11LHC Cryo R2E workshop R2E: P8 Main modifications and phases PLC’sMagnetic Bearings Valve Positioners QURCaYes QUIYes - QURAYes-- QURCbYes Ph 3 Ph 1Ph 2 UX85 US85 Strategy considered for this case: - Radiation monitoring system in UX85 and US85 to assess real situation w.r.t hypothesis - We take reasonable precautions where we know there will be a problem 2011 Jul’082009

TE/CRG TM – 09 April M. Pezzetti – Cryogenics 5 Linde UL84/US85 Linde UX45Air Liquide UX65 Air Liquide US25/PM18 UX45 Radiation level 2011: 2.6x : 1.4x10 7 ncm : 2x10 8 ncm -2 US85 Radiation level 2011: 4x : 8x10 7 ncm : 8x10 8 ncm -2 UX65 Radiation level 2011: N/A 2012: 1x10 6 ncm : <1x10 7 ncm -2 Low radiation level <1x10 3 ncm -2 Radiation levels in the LHC P4/6 radiation levels are due to beam-residual gas interaction. P8 radiation is directly proportional to the cumulated luminosity. (will increase by a factor of few after LHCb upgrade, not before LS2) (depending on overall 25ns impact)

LSC – 16 August M. Pezzetti – Cryogenics 6 P4 R2E Mitigation action planning H4IRRAD test for AMB cross section sensitivityDecember 2012 AMB failure analysis (P4 critical for LHC 2015 physic run!!)January 2013 TE-TM presentation / recommandations. Full P4 Relocation (200 KCHF). P6-P8 divided into Phase I (2014- cabling) and Phase II (relocation in any Chrismast break). (75 KCHF) 09 April 2013 ECR & DIC preparationMay 2013 DIC validated by EN/ELJune 2013 “New AMB” delivered at CERN by MECOS ® (up to 80 meters distance limitation) January 2014 EN/EL Cabling in P4March 2014 EN/EL Cabling in P6-P8Sept / Nov 2014 TE/CRG Cabinet relocationMarch/April 2014 TE/CRG CommissioningApril/May 2014

LSC – 16 August M. Pezzetti – Cryogenics 7 What? Cryo cabinet relocation (Cable length +/- 50m) [US45 - level 2] QURA [~20 SIPART positioner (?)] [UX45 – level 2] QURC [8 cabinet QURC (AMB, Drive, local PLC & 45 SIPART positioner (?)] [US45 - level 1] QUI[1 cabinet (PROFIBUS & 20 SIPART positioner)] [UX45 – level 1] QURC[2 cabinet (PLC, EH Power controller & PROFIBUS)] [UX45 – level 0] Cryo RF[4 cabinet (PROFIBUS & EH Power controller)] Where? From UX45 (L2) to UL44/46 (see pictures below) When? March 2014 – May 2014 How? Uls space reservation (ICL committee) TE/CRG cabling manufacturing (50 KCHF – 2013 budget) New AMB MECOS electronics (150 KCHF – 2013 & mainly 2014) EN/EL cabling (in progress, 2014 budget) new SIPARTPh1 cabling (35 KCHF 2014)- Ph2 installation (215 KCHF 2015 or later) Commissioning(35K CHF – 2014 budget) R2E P4 status

LSC – 16 August M. Pezzetti – Cryogenics 8 P4 SEU Mitigation for valve positionner controller Cross Section estimation

LSC – 16 August M. Pezzetti – Cryogenics 9 Conclusion AMB failure cross-section measured at H4IRRAD in agreement with LHC operational experience.  New SEU mitigation action required for the P4 AMB equipment. R&D in progress for new electronic without 20 m cabling limitation.  no showstopper  Sipart positioner relocation action required as in P8?? Alternative plan for Sipart positioner if SEU rate are higher than excepted during 2015/2016 operation : implementation of Phases 1 (cabling) during LS1 and Phases 2 ( during a Christmas stop.

LSC – 16 August M. Pezzetti – Cryogenics 10 end

LSC – 16 August M. Pezzetti – Cryogenics 11 R2E P4 budget status (budget code 99547) TE/CRG cabling manufacturing 50 KCHF – 2013 budget New AMB MECOS electronics (R&D + prod.) 30 KCHF 2013 & 120 KCHF 2014 EN/EL cabling in progress, 2014 budget new SIPART Ph1 cabling (35 KCHF 2014)- Ph2 installation (215 KCHF 2015 or later) AMB Commissioning 35K CHF – 2014 budget Others 20 KCHF TOTAL ~300 KCHF or (with SIPART ~550KCHF)