RPC weekly meeting

Tuesday 11 Jun 2024, 09:00 → 10:30 Europe/Zurich

5/R-026 (CERN)

Davide Boscherini (Universita e INFN, Bologna (IT)), Mohamed Zaazoua (University of Science and Technology of China (CN))

Weekly meeting about the RPC system activity

09:00 → 09:10 Communications to/from the gas group

Speakers: Beatrice Mandelli (CERN), Enrico Pastori (INFN e Universita Roma Tor Vergata (IT)), Gianluca Rigoletti (CERN), Kacper Kapusniak (CERN), Roberto Guida (CERN)

09:10 → 09:20 Plan for TS1

Speakers: Claudio Luci (Sapienza Universita e INFN, Roma I (IT)), Davide Boscherini (Universita e INFN, Bologna (IT)), Enrico Pastori (INFN e Universita Roma Tor Vergata (IT)), Gianluca Rigoletti (CERN), Giulio Aielli (INFN e Universita Roma Tor Vergata (IT)), Kacper Kapusniak (CERN)

List of interventions- mzaazoua - June 10.xlsx

09:20 → 09:35 Leaks invisigation & repair

Conveners: Dmitri Kharchenko (Joint Institute for Nuclear Research (JINR)), Enrico Pastori (INFN e Universita Roma Tor Vergata (IT)), Ivan Troeglazov (Joint Institute for Nuclear Research (RU)), Vladimir Elkin (Joint Institute for Nuclear Research (RU))

09:35 → 09:45 Detector/LVL1 status

Speakers: Claudio Luci (Sapienza Universita e INFN, Roma I (IT)), Enrico Tusi (INFN e Universita Roma Tor Vergata (IT)), Eric Ballabene (University and INFN, Bologna (IT)), Gian Luigi Alberghi (Universita e INFN, Bologna (IT)), Dr Gianluca Bianco (Universita e INFN, Bologna (IT)), Giulio Aielli (INFN e Universita Roma Tor Vergata (IT)), Marco Sessa (INFN e Universita Roma Tor Vergata (IT)), Mr Mohamed Zaazoua (University of Science and Technology of China (CN)), Sabrina Perrella (Sapienza Universita e INFN, Roma I (IT)), Sinem Simsek (Istinye University (TR))

• HV Scan completed
  • HV scan points 
    • 9400V (1/8) [e-log] during Run 476760 [e-log];
    • 9450V (2/8) [e-log] during Run 476785 [e-log];
    • 9500V (3/8) [e-log] during Run 476875 [e-log];
    • 9300V (4/8) [e-log] during Run 476929 [e-log];
    • 9250V (5/8) [e-log] during Run 476991 [e-log];
    • 9200V (6/8) [e-log] during Run 477002 [e-log];
    • 9000V (7/8) [e-log] during Run 477023 for few LBs [e-log] and during Run 477037 [e-log];
    • 8800V (8/8) [e-log] during Run  477048 [e-log].
  • RPC in not ready because of HV channels used in HV scan (9000V) [e-log and e-log] and (8800V) [e-log].
  • HV channels used for the HV scan are set back to standard: VConfig=9350V, unmasked all connected gas gaps [e-log].
    
    

• HV
  • BOL.B.09.CO.Ly1.HV ramped down to 5000V, ramped back up to 9100V [e-log].
  • BOL.B.09.CO.Ly1.HV ramped down again, ramped back up to 8800V; BML.C.07.CO.Ly1 ramped down, ramped back to 8800V [e-log].

• LV
  • BMS4C10 Vpd channel was on "overcurrent" [e-log].
    
    
• ADC board with high temperature
  • Change of alarm thresholds for the LV board with high temperature (Y_3605_X8_C5/H1/br03/crate5/slot05) [e-log].
  • Hardware connected to the LV board with high temperature (Vee and Vpd for sectors 3 and 4 Pi Ly0 and Ly1) switched off [e-log].
    
    
• HV issues during TS
  • BML.B.01.CO.Ly1, BMS.C.02.PI.Ly1, BOS.A2.02.CO.Ly0 and BMS.B.04.CO.Ly0 HV channels ramped down [e-log]. 
  • BOS.A2.02.CO.Ly1 HV channel tripped [e-log].  
  • BML.B.01.PI.Ly1 and BML.B.01.PI.Ly0 HV channels ramped down [e-log].

09:45 → 09:55 Resin update

Speakers: Ahmet Renklioglu (Istinye University (TR)), Dr Aydin Ozbey (Istanbul University-Cerrahpasa (TR))