Name: Gas systems project
Start: 2020-04-16T09:00:00+02:00
End: 2020-04-16T13:20:00+02:00
Location: CERN

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GAS M&O meeting 16 April 2020

Present: Beatrice, Roberto, Andrea, Patrick, Kacper, LPh, Fred, Michal, Mara, Gianluca, Sabino, Fabio, Federico, Leonardo

Indico: https://indico.cern.ch/event/909752/

CHECK Gas Systems

ALICE

TPC

by mistake LPh started the cO2 absorber and we have a big loss of gas. Problem fixed by piquet

TRD

two stops due to profibus problem but able to restart as system
Patrick and Fred went on place: found two profibus connectors not well closed. These connectors were installed with the new PLC
Profitrace installed in place to check for other possible problems

ATLAS

nothing to report

CMS

Lower of gas flow for the chilled mirror of the humidifier
Humidifier of RPC is stable because is not injecting any water. This is due to the fact that we don’t use the purifiers
DT pump maintenance: change of membrane for pump 1 and 3
Ar/Co2 batteries almost empty. New batteries already at P5

LHCb

nothing to report

GENERAL

Chilled mirror needs between 10 and 20 l/h. The lower is the flow, the higher is the time to perform the measurement
Profibus check has to be done before and after the change of PLC
Summary of status of alarms done by Mara
Level of PGS sometimes is > 100% —> Michal to check
PGS list of sensors not working/not existing: missing ALICE, CMS and LHCb

Actions:

To prepare a list of sensors not working or missing in PGS —> Experiment technical responsible
Excel file for alarms prepared weekly by Mara —> Experiment technical responsible to fill

There are minutes attached to this event. Show them.

- 09:00 → 09:10
  
  SMS alarms from gas systems 10m
  
  Minutes
  
  Speaker: Mara Corbetta (Universite Claude Bernard Lyon I (FR))
  
  Summary_Alarms.xlsx
  
  link to weekly SMS alarms
  
  https://espace.cern.ch/gas-control/Shared%20Documents/Forms/AllItems.aspx?RootFolder=%2Fgas%2Dcontrol%2FShared%20Documents%2FActivities%2FSmsMail%20notification&FolderCTID=0x012000852472212F969B4E9850475116730F2C
  
  link to gas system checklists
  
  https://espace.cern.ch/gas-control/_layouts/15/start.aspx#/Shared%20Documents/Activities/GasSystemsChecklist/
- 09:10 → 09:20
  Reminder of activities to do at the re-start 10m
  
  Minutes
  
  Speakers: Andrea D'Auria (CERN), Beatrice Mandelli (CERN), Frederic Merlet (CERN), Gianluca Rigoletti (Universite Claude Bernard Lyon I (FR)), Kacper Jerzy Kapusniak (CERN), Louis-Philippe De Menezes (CERN), Mara Corbetta (Universite Claude Bernard Lyon I (FR)), Michal Zbigniew Zimny (CERN), Patrick Carrie (CERN), Roberto Guida (CERN), Sabino Zagaria (Universita & INFN Pisa (IT))
  ALICE
  
  CPV
  
  We have 3 lines input that are ok, and 3 lines output: in one there is not the return. LPh contacted Yuri
  
  TPC
  
  In the purifier the small thermic box triggered (also last year it happened) —> Patrick/LPh to check
  
  TRD
  
  Recuperation: missing two valves but there are present in the software
  
  Purifier: to review if keep the safety valve or the rupture disk
  
  Purifier: safety valve at the input where we have Ar or Ar/H2 at high pressure —> LPh to check with safety
  
  ATLAS
  
  MDT
  
  Check overpressure in MDT chamber when there is a stop-start of the system
  
  Only one convertisseur, one pump, etc from the system —> Patrick/Kacper to fix
  
  Found a problem of grounding on pressure sensors: pressure sensors changed. Now to verify if the grounding problem is still there
  
  Problem in the 2 vaisala of humidifier: several spikes present. Not clear why. Before the software upgrade they were not present
  
  RPC (Fred)
  
  Move the IR analyser inside the Exhaust module
  
  Fill the 3rd purifier?
  
  CMS
  
  RPC
  
  Michal changed the mother board in rack 67: now flow is 170 l/h (elog #2279) —> Andrea to check with new voegtlin red
  
  (Mara) Isobutane 5% calibration for IR and GC
  
  (Fred) Change product Purifier 1 & 2 and fill purifier 3?
  
  DT
  
  Change one motherboard in rack 61 but flow didn’t change (elog #2280) —> to try to recalibrate one set of flowcells
  
  Difficult to re-start the gas system after power-cut —> to do some tests
  
  Test for power cut and re-start for the exhaust line —> to do other tests
  
  GEM
  
  Andrea prepared a drawing for ME0 and check for space in UX —> Andrea to send an email to Michele
  
  CSC
  
  On-going regulation of PID for the exhaust —> Beatrice
  
  Warning to set-up —> Beatrice/Michal/Roberto
  
  canbus cable to be replaced (elog #2320)
  
  CF4 Recovery (Mara)
  
  MFCs Installation
  
  Fix leaks column B CF4 adsorber
  
  Install new storage battery
  
  Test new compressor
  
  LHCb
  
  MWPC
  
  Problem in the GC analysis of the mixer: not visible the correct gas mixture with both LF and HF. Probably an hardware problem (connection, valve, etc) to find —> Mara
  
  Leak in Mixer and Exhaust. Only in Exhaust found but not repaired. Other not yet founded —> Patrick
  
  RICH2
  
  To inject Air —> Patrick to check with C. Frei
  
  To add line for analysis “supply to detector”k
  
  (Mara) Ageing test of CO2 IR module
  
  (Mara) GC analysis of recuperated CF4
  
  SciFi
  
  Problem on 3-ways valve —> Patrick
  
  PGS
  
  Interlock of Ar/H2 does not work —> Michal/Patrick to check
  
  GENERAL
  
  Alarms/Errors in power supplies for all gas systems —> Patrick
  
  PROFIBUS check before and after the change of PLC —> Michal + somebody else
  
  (Mara) Ageing test of black flowmeters Omron
- 09:20 → 09:30
  
  M&O and project organization 10m
  
  Speakers: Beatrice Mandelli (CERN), Roberto Guida (CERN)
- 09:30 → 09:40
  
  Overview of planning LS2 10m
  
  Speaker: Beatrice Mandelli (CERN)
- 09:40 → 09:45
  
  Piquet interventions 5m
  
  http://eloggas.cern.ch/GAS_PIQUET/
  
  Speakers: Andrea D'Auria (CERN), Beatrice Mandelli (CERN), Frederic Merlet (CERN), Louis-Philippe De Menezes (CERN), Patrick Carrie (CERN), Kacper Jerzy Kapusniak (CERN), Michal Zbigniew Zimny (CERN)
- 09:45 → 09:50
  
  Activities on-going 5m
  
  Speakers: Beatrice Mandelli (CERN), Frederic Merlet (CERN)
- 09:50 → 10:10
  
  Plan of LS2 activities 20m
  
  Speakers: Beatrice Mandelli (CERN), Frederic Merlet (CERN), Roberto Guida (CERN)
- 10:10 → 11:35
  Gas systems for the LHC experiments
  - 10:25
    
    ALICE 5m
    
    Speaker: Louis-Philippe De Menezes (CERN)
  - 10:30
    
    ATLAS 5m
    
    Speaker: Kacper Jerzy Kapusniak (CERN)
  - 10:35
    
    CMS 5m
    
    Speaker: Andrea D'Auria (CERN)
  - 10:40
    
    LHCb 5m
    
    Speaker: Patrick Carrie (CERN)
  - 10:45
    
    Gas analysis: standard H2O/O2 5m
    
    Speaker: Louis-Philippe De Menezes (CERN)
  - 10:50
    
    Gas web-page 5m
    
    http://test-gasmonitoring.web.cern.ch
    https://ep-dt-gasanalysis.web.cern.ch
    
    Speaker: Beatrice Mandelli (CERN)
  - 10:55
    
    Software 10m
    
    Speaker: Michal Zbigniew Zimny (CERN)
- 11:35 → 12:25
  Gas System developments
  - 11:35
    
    Gas System Test-Bench 10m
    
    Speakers: Fabio Bordon (CERN), Sabino Zagaria (Universita & INFN Pisa (IT))
  - 11:45
    
    CMS CF4 recovery 10m
    
    Speakers: Fabio Bordon (CERN), Mara Corbetta (Universite Claude Bernard Lyon I (FR))
  - 11:55
    
    LHCb RICH2 CF4 recuperation 10m
    
    Speakers: Federico Consolaro (CERN), Mara Corbetta (Universite Claude Bernard Lyon I (FR))
  - 12:05
    
    R134a Recuperation 10m
    
    Speakers: Federico Consolaro (CERN), Gianluca Rigoletti (Universite Claude Bernard Lyon I (FR)), Ian Crotty (University of Wisconsin Madison (US)), Mara Corbetta (Universite Claude Bernard Lyon I (FR))
  - 12:15
    
    AoB 10m
    
    Minutes
    
    Speakers: Fabio Bordon (CERN), Federico Consolaro (CERN), Gianluca Rigoletti (Universite Claude Bernard Lyon I (FR)), Mara Corbetta (Universite Claude Bernard Lyon I (FR)), Sabino Zagaria (Universita & INFN Pisa (IT))
    
    Working folder for Checklists of ATLAS, ALICE, CMS, LHCb:
    
    https://espace.cern.ch/gas-control/Shared%20Documents/Activities/GasSystemsChecklist
    
    Checklist for ALICE:
    
    https://espace.cern.ch/gas-control/Shared%20Documents/Activities/GasSystemsChecklist/ALICE/ALICE_checklist.xlsx?Web=1
    
    Exported Alarms for all systems in ALICE (todo):
    
    https://espace.cern.ch/gas-control/Shared%20Documents/Activities/GasSystemsChecklist/ALICE/ALICE_alarms_toreview.xlsx?Web=1
    
    Checklist for ATLAS:
    
    https://espace.cern.ch/gas-control/Shared%20Documents/Activities/GasSystemsChecklist/ATLAS/ATLAS_checklist_v2.xlsx?Web=1
    
    Exported alarms for all gas systems in ATLAS (on going):
    
    https://espace.cern.ch/gas-control/Shared%20Documents/Activities/GasSystemsChecklist/ATLAS/ATLAS_Forced-Blocked.xlsx?Web=1
- 12:25 → 12:35
  
  FSU & Jobs status 10m
  
  Speaker: Frederic Merlet (CERN)
- 12:35 → 12:45
  
  AoB 10m
  
  Speakers: Andrea D'Auria (CERN), Beatrice Mandelli (CERN), Frederic Merlet (CERN), Louis-Philippe De Menezes (CERN), Patrick Carrie (CERN), Roberto Guida (CERN)

Gas systems project

155/R-047

CERN