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Reliability Sub-Working Group

Reliability Sub-Working Group. False Dumps generation. LHC main systems. BLMS. BIS. LBDS. BEM. DCCT. Cryogenics. Lifetime. Resistive magnets. Access. Power converters. Timing. Vacuum. Experiments. QPS. Collimation. RF. BPM. False dump generator. ?. ?. >10s.

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Reliability Sub-Working Group

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  1. Reliability Sub-Working Group False Dumps generation RSWG G.Guaglio

  2. LHC main systems BLMS BIS LBDS BEM DCCT Cryogenics Lifetime Resistive magnets Access Power converters Timing Vacuum Experiments QPS Collimation RF BPM False dump generator ? ? >10s Magnet protection Loss Duration middle <10ms 4-5 first line systems: average l < 1E-7/h/4 = 2E-8/h ~20 beam permit systems: average l < 1E-6/h/20 = 5E-8/h RSWG G.Guaglio

  3. Annual False Dumps Work proposal RSWG G.Guaglio

  4. BLMS UPS situation • 68 in the straight sections: MTBF 1E5? (3) • 1080 in the arc: MTBF 1E9 h @25°C (0.004) • 24 in surface VME : MTBF 60,000 h @25°C (2) Possibility to use non LHC standard VME rack configuration to improve the reliability: disable/check fans interlock, parallel configuration,… RSWG G.Guaglio

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