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26 Apr 2004RSWG G.Guaglio 1/4 Reliability Sub-Working Group False Dumps generation.

Published byAriana Shaw Modified over 10 years ago

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Presentation on theme: "26 Apr 2004RSWG G.Guaglio 1/4 Reliability Sub-Working Group False Dumps generation."— Presentation transcript:

1 26 Apr 2004RSWG G.Guaglio 1/4 Reliability Sub-Working Group False Dumps generation

2 26 Apr 2004RSWG G.Guaglio 2/4 LHC main systems Magnet protection Loss Duration <10ms >10s middle False dump generator Resistive magnets Lifetime RF BPM Access Timing Experiments Collimation Vacuum DCCT LBDS BEM BIS Cryogenics QPS BLMS 4-5 first line systems: average < 1E-7/h/4 = 2E-8/h ~20 beam permit systems: average < 1E-6/h/20 = 5E-8/h Power converters ? ?

3 26 Apr 2004RSWG G.Guaglio 3/4 Annual False Dumps SystemFalse Dumps/yMain causeFalse Dumps/y after actions BLMS?Power supplies~4 BIS LBDS … Work proposal

4 26 Apr 2004RSWG G.Guaglio 4/4 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,…

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