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Message ID: 362     Entry time: Mon, 23.06.2025 14:01:56 Author: A. Dmitriev, V. Ozvenchuk  Subject: TPC High Voltage for 2025 O+O run (big TPCs + GRC)

VTPC-1 VTPC-2 MTPC-L MTPC-R GRC-1 Mon, 23.06.2025 14:17:18 0V(1,4)/0V/13kV 0V/13kV 0V(SR)/0V(HR)/19kV 0V(SR)/0V(HR)/19kV 0V/20V Setting up the drift voltages Mon, 23.06.2025 14:32:59 500V(1,4)/500V/13kV 500V/13kV 500V(SR)/500V(HR)/19kV 500V(SR)/500V(HR)/19kV 500V/20V 500V on sense wires, pot. up to 60V Mon, 23.06.2025 14:56:21 600V(1,4)/600V/13kV 600V/13kV 600V(SR)/600V(HR)/19kV 600V(SR)/600V(HR)/19kV 600V/20V +100V in all chambers Mon, 23.06.2025 15:18:45 700V(1,4)/700V/13kV 700V/13kV 700V(SR)/700V(HR)/19kV 700V(SR)/700V(HR)/19kV 700V/20V +100V in all chambers Mon, 23.06.2025 15:34:48 800V(1,4)/800V/13kV 800V/13kV 800V(SR)/800V(HR)/19kV 800V(SR)/800V(HR)/19kV 800V/20V +100V in all chambers Mon, 23.06.2025 18:03:47 900V(1,4)/900V/13kV 890V/13kV 900V(SR)/840V(HR)/19kV 900V(SR)/840V(HR)/19kV 900V/20V VTPC-2 and MTPCs are 200V below nominal [+100V -- VTPC-1, MTPCs(SR), GRC; +90V -- VTPC-2; +40V -- MTPCs(HR)] Mon, 23.06.2025 18:20:14 1000V(1,4)/1000V/13kV 890V/13kV 900V(SR)/840V(HR)/19kV 900V(SR)/840V(HR)/19kV 1000V/20V VTPC-1(2,3,5,6) are 200V below nominal [+100V -- VTPC-1 and GRC] Mon, 23.06.2025 18:36:24 1050V(1,4)/1000V/13kV 890V/13kV 900V(SR)/840V(HR)/19kV 900V(SR)/840V(HR)/19kV 1100V/20V VTPC-1(1,4) are 200V below nominal [+50V -- VTPC-1(1,4); +100V -- GRC] Fri, 27.06.2025 10:45:00 1050V(1,4)/1000V/13kV 890V/13kV 900V(SR)/840V(HR)/19kV 900V(SR)/840V(HR)/19kV 0V/20V Ramped GRC down to change multiplicity (AD, RN) Fri, 27.06.2025 11:05:59 1050V(1,4)/1000V/13kV 890V/13kV 900V(SR)/840V(HR)/19kV 900V(SR)/840V(HR)/19kV 500V/20V Ramping GRC back, first 500V (AD,RN) Fri, 27.06.2025 11:07:51 1050V(1,4)/1000V/13kV 890V/13kV 900V(SR)/840V(HR)/19kV 900V(SR)/840V(HR)/19kV 1000V/20V Ramping GRC back +500V (AD,RN) Fri, 27.06.2025 11:11:00 1050V(1,4)/1000V/13kV 890V/13kV 900V(SR)/840V(HR)/19kV 900V(SR)/840V(HR)/19kV 1200V/20V Ramping GRC back +200V (AD,RN) Fri, 27.06.2025 11:14:08 1050V(1,4)/1000V/13kV 890V/13kV 900V(SR)/840V(HR)/19kV 900V(SR)/840V(HR)/19kV 1300V/20V Ramping GRC back +100V (AD,RN) Fri, 27.06.2025 11:20:07 1050V(1,4)/1000V/13kV 890V/13kV 900V(SR)/840V(HR)/19kV 900V(SR)/840V(HR)/19kV 1400V/20V GRC 200V below nominal (GRC+100V) (AD,RN) Fri, 27.06.2025 15:41:09 950V(1,4)/900V/13kV 790V/13kV 800V(SR)/740V(HR)/19kV 800V(SR)/740V(HR)/19kV 1300V/20V -100V in all chambers Sat, 28.06.2025 23:19:46 1050V(1,4)/1000V/13kV 890V/13kV 900V(SR)/840V(HR)/19kV 900V(SR)/840V(HR)/19kV 1400V/20V +100V in all chambers Sun, 29.06.2025 00:03:42 1080V(1,4)/1030V/13kV 920V/13kV 930V(SR)/870V(HR)/19kV 930V(SR)/870V(HR)/19kV 1430V/20V +30V in all chambers Sun, 29.06.2025 00:13:36 1110V(1,4)/1060V/13kV 950V/13kV 960V(SR)/900V(HR)/19kV 960V(SR)/900V(HR)/19kV 1460V/20V +30V in all chambers Sun, 29.06.2025 00:28:51 1140V(1,4)/1090V/13kV 980V/13kV 990V(SR)/930V(HR)/19kV 990V(SR)/930V(HR)/19kV 1490V/20V +30V in all chambers Sun, 29.06.2025 00:31:34 1170V(1,4)/1120V/13kV 1010V/13kV 1020V(SR)/960V(HR)/19kV 1020V(SR)/960V(HR)/19kV 1520V/20V +30V in all chambers Sun, 29.06.2025 00:43:29 1190V(1,4)/1160V/13kV 1040V/13kV 1050V(SR)/990V(HR)/19kV 1050V(SR)/990V(HR)/19kV 1540V/20V VTPC1 and GRC to PbPb nominal, +30 in all rest chambers Sun, 29.06.2025 00:59:21 1190V(1,4)/1160V/13kV 1070V/13kV 1080V(SR)/1020V(HR)/19kV 1080V(SR)/1020V(HR)/19kV 1540V/20V +30 MTPCs, VTPC2 and MTPCs HR to PbPb nominal Sun, 29.06.2025 01:04:52 1190V(1,4)/1160V/13kV 1070V/13kV 1100V(SR)/1020V(HR)/19kV 1100V(SR)/1020V(HR)/19kV 1540V/20V MTPCs SR to PbPb nominal Sun, 29.06.2025 01:30:58 restarting MTPCs #16-24 after failure of the new CAEN shit (module 14) VTPC-1 VTPC-2 MTPC-L MTPC-R GRC-1 Sun, 29.06.2025 12:56:03 990V(1,4)/960V/13kV 870V/13kV 900V(SR)/820V(HR)/19kV 900V(SR)/820V(HR)/19kV 1400V/20V -200V all TPCs -140V GRC Sun, 29.06.2025 16:30:01 1010V(1,4)/980V/13kV 890V/13kV 920V(SR)/840V(HR)/19kV 920V(SR)/840V(HR)/19kV 1420V/20V +20V in all TPCs Sun, 29.06.2025 16:40:13 1040V(1,4)/1010V/13kV 920V/13kV 950V(SR)/870V(HR)/19kV 950V(SR)/870V(HR)/19kV 1450V/20V +30V in all TPCs Sun, 29.06.2025 17:00:20 1070V(1,4)/1040V/13kV 950V/13kV 980V(SR)/900V(HR)/19kV 980V(SR)/900V(HR)/19kV 1500V/20V +30V in all TPCs, +50V on GRC Sun, 29.06.2025 17:03:16 1070V(1,4)/1040V/13kV 950V/13kV 1010V(SR)/930V(HR)/19kV 1010V(SR)/930V(HR)/19kV 1540V/20V +30 in MTPCs, +40V on GRC Sun, 29.06.2025 17:12:00 1100V(1,4)/1070V/13kV 980V/13kV 1040V(SR)/960V(HR)/19kV 1040V(SR)/960V(HR)/19kV 1540V/20V +30 in all TPCs Sun, 29.06.2025 17:23:05 1160V(1,4)/1130V/13kV 1040V/13kV 1100V(SR)/1020V(HR)/19kV 1100V(SR)/1020V(HR)/19kV 1540V/20V +60 in all TPCs Sun, 29.06.2025 18:00:48 1190V(1,4)/1160V/13kV 1070V/13kV 1100V(SR)/1040V(HR)/19kV 1100V(SR)/1040V(HR)/19kV 1540V/20V +30 in VTPCs, +20 MTPCs HR Mon, 30.06.2025 10:18:58 1190V(1,4)/1160V/13kV 1070V/13kV 1100V(SR)/1020V(HR)/19kV 1100V(SR)/1020V(HR)/19kV 1540V/20V -20 MTPCs HR

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