PLANS FOR EXPERIMENT PROTECTION AT LHC - LHCb - Cern
PLANS FOR EXPERIMENT PROTECTION AT LHC - LHCb - Cern
PLANS FOR EXPERIMENT PROTECTION AT LHC - LHCb - Cern
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Twepp2009 Massimiliano Ferro-Luzzi<br />
26<br />
ALICE (2)<br />
The UserPermit is based on BCM-CFC-TELL1 chain as in <strong>LHC</strong>b.<br />
– Fast abort on RS2 (2x40µs CFC integration frames) coincidences:<br />
Dump beam if 3 of 4 adjacent diamond sensors show current > thr RS2<br />
– Slow abort on ΣRS32 (32x40µs):<br />
Sorting out the two highest and the lowest of 8 sensors, dump beam if ΣRS32 > thr ΣRS32<br />
Current estimate for dump thresholds (to be x-checked …):<br />
– thr RS2 ~ 5000 nA , thr ΣRS32 ~ 250 nA<br />
Noise Collisions Thres. Damage<br />
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