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Wednesday June 22 nd

Wednesday June 22 nd. 08:30 Machines in stand-by 12:30 Access in LHC for QPS and PC: QPS quench heater power supply RB.A12 EPC for RSF2.A67B2 and RQ9.R8B1 . RCBH27.L1B2 was taken out of s81 SOC and put in not_used , will be repaired from EPC at the next occasion: today…

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Wednesday June 22 nd

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  1. Wednesday June 22nd • 08:30 Machines in stand-by • 12:30 Access in LHC for QPS and PC: • QPS quench heater power supply RB.A12 • EPC for RSF2.A67B2 and RQ9.R8B1. • RCBH27.L1B2 was taken out of s81 SOC and put in not_used, will be repaired from EPC at the next occasion: today… • Alarm added to “big sister” for OFSU crashes • 16:24 Power cut • Lightning striking us… • Several EL breakers as various levels tripped LHC morning report

  2. Thursday June 23rd • Status morning: Everything recovered except… • Cryo problems in point 4 & 8: water was stopped. To be recovered. Estimate: this afternoon. • Cryo problem in point 3: EL issue, damaged equipment. To be fixed. • Compensators to be reconnected. • RCBCH10.L3B1, no communication  to be checked this morning. • All PC for instrumentation to be switched on. • QPS communication problem with controller of RQD/F in 67, needs a reset in the tunnel. • Remote control with some valves to be checked. • Status experiments: ATLAS needs access, CMS OK, LHCb OK, ALICE OK. To be switched on later… LHC morning report

  3. Thursday June 23rd • In the shadow of recovery: • Repair RCBH27.L1B2. • Access P6 for pulsing kickers in local. • Install additional diagnostics for OP and upcoming MD. • Firmware upgrade for ADT beam position modules (observation only affected) • TI2 AUG (red button) repair • … • Let us know any needs for access, we must organize… LHC morning report

  4. Ahead • Check injection kicker pulse. • Collimation loss maps (450 GeV, 3.5 TeV): ran out of 4 week qualification interval. • Next intensity step: 1092b  1236b LHC morning report

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