RPC Operation Run3

This twiki's objective is to provide the information necessary for experts to step in during access hours. It is separated into two sections: one is for future interventions, and the other is for the ones that have already been carried out

Sheduled interventions:

  • Beased on e-logs:
order Date Problem Linked mail Description Action expert's comment gaps recovered
  21/05/2023 BML2C05.CO.DP2.Ly1.DZ2 with gap= 23 muA   2021.02.09 17:36 Anomalous current, maybe a mall air intake (aielli)      

  • based on DCS:
This is the list of HV channels disconnected from rack side: yellow means .... Red for ... and orange is for ...

Flag:
Repair,
Foam 		HV cable Crate HV channel n. gaps flow Gap with high current comment
(NEW DISCONNECTION=disconnected at the end of YETS 2022-2023)
BML1A01.PI.Ly1 Y_4502_X2_C2 BML.B.01.PI.Ly1 4 0.694 NEW DISCONNECTION
BML4C01.PI.Ly0 Y_4502_X2_C1 BML.C.01.PI.Ly0 2 0.484
BMS2C02.CO.Ly0 Y_4502_X2_C1 BMS.B.02.CO.Ly0 2 0.432 SPC not flagged, they are disconnected as well;
BMS5C02.CO.Ly1 Y_4502_X2_C2 BMS.C.02.CO.Ly1 1 0.913 DCS comment: high current at 9kV
BMS6C02.PI.Ly1 Y_4502_X2_C2 BMS.C.02.PI.Ly1 2 0.497
BOS1A02.CO.Ly0 Y_6004_X7_C2 BOS.A1.02.CO.Ly0 4 0.870
BOS2A02.CO.Ly1 Y_6004_X7_C2 BOS.A1.02.CO.Ly1 4 0.478
BOL2A03.CO.Ly1 Y_5505_X8_C3 BOL.A1.03.CO.Ly1 4 0.477
R BOL2C03.CO.Ly0 Y_5505_X8_C2 BOL.C1.03.CO.Ly0 3 0.757 map problem, TO BE CHECKED; tested in access 2023/06/01: OVC at 5kV, to be debugged
BOL3C03.CO.Ly0 Y_5505_X8_C2 BOL.C2.03.CO.Ly0 4 0.478
BOL4C03.CO.Ly0 Y_5505_X8_C2 BOL.C2.03.CO.Ly0 4 0.548
BOL5A03.CO.Ly1 Y_5505_X8_C3 BOL.A3.03.CO.Ly1 4 0.520
BOL5C03.CO.Ly1 Y_5505_X8_C3 BOL.C3.03.CO.Ly1 4 0.509
BOL6A03.CO.Ly0 Y_5505_X8_C2 BOL.A3.03.CO.Ly0 4 0.504
F BMS6C04.PI.Ly0 Y_4105_X8_C4 BMS.C.04.PI.Ly0 2 0.520 NEW DISCONNECTION; tripping at 7.5kV
BML1A05.PI.Ly0 Y_3023_X8_C3 BML.B.05.PI.Ly0 4 0.474
F BMS3A06.PI.Ly0 Y_3023_X8_C3 BMS.A.06.PI.Ly0 2 0.488
BOL1A07.CO.Ly0 Y_5523_X8_C2 BOL.A1.07.CO.Ly0 4 1,342 OVC at 3kV, suspected sparking connector; to be debugged
BOL4C07.CO.Ly0 Y_5523_X8_C2 BOL.C2.07.CO.Ly0 4 0.485
BOL5C07.CO.Ly1 Y_5523_X8_C3 BOL.C3.07.CO.Ly1 2 0.734 1 gap disc. on chamber, 1 gap disc. from rack, 1 gap unflagged; TO BE CHECKED
BOS2A08.CO.Ly0 Y_5523_X8_C2 BOS.A1.08.CO.Ly0 4 0.492
BOS4A08.CO.Ly1 Y_5523_X8_C3 BOS.A2.08.CO.Ly1 4 0.530
BOS4C08.CO.Ly0 Y_5523_X8_C2 BOS.C2.08.CO.Ly0 4 0.515
BOL1A09.CO.Ly0.RO Y_5325_X4_C3 BOL.B.09.CO.Ly0.RO 2 0.837 DP2 gaps; DCS comment: probably splitter failure
BOL3C09.CO.Ly1.HV Y_5325_X4_C3 BOL.C.09.CO.Ly1.HV 2 0.506 DP1 gaps
BOL3C09.CO.Ly0.RO Y_5325_X4_C3 BOL.C.09.CO.Ly0.RO 2 0.547 DP2 gaps
R BOL4C09.CO.Ly0.HV Y_5325_X4_C3 BOL.C.09.CO.Ly0.HV 2 0.657 DP1 gaps; tested in access 2023/06/01: OVC at 1.5kV, to be debugged
BMS4A10.PI.Ly1 Y_3625_X4_C2 BMS.A.10.PI.Ly1 2 1,230
BML1C11.CO.Ly0 Y_5023_X0_C2 BML.B.11.CO.Ly0 2 0.496
BML2A11.CO.Ly0 Y_5023_X0_C2 BML.B.11.CO.Ly0 4 0.504
R BOL4A11.CO.Ly0 Y_5924_X1_C2 BOL.A2.11.CO.Ly0 4 0.595 tested in access 2023/06/01: Igap=0 for DZ1 gaps; high ohmic current for DZ2 gaps
F BOF3C12.PI.Ly0 Y_5823_X0_C1 BOF_G.C.12.PI.Ly0 4 0.599
BOG4A12.CO.Ly1 Y_5924_X1_C3 BOF_G.A2.12.CO.Ly1 2 0.518
BML5C13.CO.Ly1 Y_4205_X0_C2 BML.C.13.CO.Ly1 2 0.460 NEW DISCONNECTION
BOE4A13.CO.Ly0 Y_5705_X0_C4 BOL.A2.13.CO.Ly0 2 ?
R BOL3A13.CO.Ly0 Y_5705_X0_C3 BOL.A2.13.CO.Ly1 4 1,310 Ly0 in HV cable <-> Ly1 HV channel (swap); HV PRIMARY CABLE SPARKING
BOL6C13.CO.Ly1 Y_5705_X0_C3 BOL.C3.13.CO.Ly1 4 0.792 map problem, difficult to find the righ connector on patch-panel
F BOF3A14.CO.Ly0 Y_5705_X0_C4 BOF_G.A2.14.CO.Ly0 4 0.510 NEW DISCONNECTION
BOF5C14.PI.Ly1 Y_4605_X0_C1 BOF_G.C.14.PI.Ly1 4 0.458 NEW DISCONNECTION
BOG4C14.CO.Ly0 Y_5705_X0_C4 BOF_G.C2.14.CO.Ly0 2 0.559 NEW DISCONNECTION
BOG8A14.CO.Ly1 Y_5705_X0_C3 BOF_G.A3.14.CO.Ly1 2 0.505 NEW DISCONNECTION
BML4C15.CO.Ly1 Y_4203_X1_C5 BML.C.15.CO.Ly1 2 0.531 NEW DISCONNECTION
BML5C15.PI.Ly1 Y_4203_X1_C5 BML.C.15.PI.Ly1 2 1,388 OVC at 3kV, suspected sparking connector (to be debugged).
BML6A15.PI.Ly1 Y_4203_X1_C5 BML.A.15.PI.Ly1 4 0.551
BOL1C15.CO.Ly0 Y_6004_X1_C3 BOL.C3.15.CO.Ly1 4 0.487
R BOL3C15.CO.Ly0 Y_6004_X1_C2 BOL.C2.15.CO.Ly0 4 1,415 SPARKING HV CONNECTOR
BOL5C15.CO.Ly0 Y_6004_X1_C2 BOL.C3.15.CO.Ly0 4 0.532 NEW DISCONNECTION
BOL6A15.CO.Ly1 Y_6004_X1_C3 BOL.A3.15.CO.Ly1 4 0.599
BOL6C15.CO.Ly1 Y_6004_X1_C3 BOL.C3.15.CO.Ly1 4 0.482
BMS3C16.PI.Ly0 Y_4203_X1_C4 BMS.C.16.PI.Ly0 2 0.517
BOS5C16.CO.Ly1 Y_6004_X1_C3 BOS.C3.16.CO.Ly1 4 0.458
BOS6A16.CO.Ly0 Y_6004_X1_C2 BOS.A3.16.CO.Ly0 4 0.458 1 gap disconnected on chamber
160

Conducted interventions

The section is for the interventions in the previous section and which are addressed.

date Experts expert's action gaps recovered    
06/06/2023 Davide B BOL6A09.CO.Ly0.HV reconnected on rack +2    
BOS5A10.CO.Ly1 reconnected on rack +4    
BOL2C03.CO.Ly0 tripping at 5 kV: sparking connector? to be debugged at chamber level.      
BOL4A11.CO.Ly0 shows Igap=0 for DZ2 and high ohmic current for DZ1      
BOL4C15.CO.Ly1 reconnected on rack: DZ1 shows Igap=0, DZ2 is ok +2    
BOL4C09.CO.Ly0.HV tripping at 2 kV: sparking connector? to be debugged at chamber level      

26/05/2023

Davide B

 Gap BOS6C04.CO.DP1.Ly1.DZ1 with high current disconnected on chamber +1    
Gap BOS6C10.CO.DP2.Ly1.DZ2 with high current disconnected on chamber -1    
HV cable BOL2C07.CO.Ly0 (with flowmeter value 0.786) reconnected on rack Y_5523_X8_C2 +4    
HV cable BOL6A09.CO.Ly0.RO (with flowmeter value 0.786) reconnected on rack Y_5325_X4_C3 +2    
04/04/2023

Davide B.,

Giulio A.,

Mohamed Z.

 BML6A13.CO.DP2.Ly1.DZ1 disconnected on chamber due to high current -1    
BMS4A10.PI.Ly1, disconnected on rack Y_3625_X4_C2, because of high current at 6kV, not visible in Igap, suspected sparking connector. -2    
BOL3C15.CO.Ly0, with sparking connector, left disconnected on rack Y_6004_x1_C2, because of difficult access (postponed to TS)      
BML1C13.CO.Ly0, labeled on DCS as disconnected on rack Y_4205_X0_C2, but was found connected (info updated on DCS).      
BOL1A03.CO.Ly1, with good gas flow(flowmeter value > 1), reconnected on rack Y_5505_X8_C3. +4    
BMS5A04.PI.Ly1, with good gas flow(flowmeter value > 1), reconnected on rack Y_4105_X8_C5. +1    
BOL1A07.CO.Ly0, with good gas flow(flowmeter value > 1), left disconnected on rack Y_5523_X8_C2, because of OVC at 3kV, suspected sparking connector ( to be debugged ).      
BMS6C08.CO.Ly1, with good gas flow(flowmeter value > 1), labeled on DCS as disconnected on rack Y_3023_X8_C2, but was found connected (info updated on DCS). Igap not changing (to be investigated).      
BOL3A11.CO.Ly0, with good gas flow(flowmeter value > 1), reconnected on rack Y_5924_X1_C2. +4    
BMF1C14.PI.Ly0, with good gas flow(flowmeter value > 1), reconnected on rack Y_4205_X0_C1. +2    
BML5C15.PI.Ly1, with good gas flow(flowmeter value > 1), left disconnected on rack Y_4203_X1_C5, because of OVC at 3kV, suspected sparking connector ( to be debugged ).      
-- MohamedZaazoua - 2023-05-05
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Topic revision: r9 - 2023-06-06 - MohamedZaazoua
 
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