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Gas systems project
GAS M&O meeting 8 July 2019
Present: Beatrice, Andrea, Kacper, Roberto, Michal, Gianluca, Mara
Indico: https://indico.cern.ch/event/833241/
ALICE #no elog
- TPC
- found pipe (from detector to pump) dirty —> they will be cleaned by ALICE
- filter in the exhaust of TPC is clean
- TRD
- Change one pump
- MTR
- Dummy chamber: to ask to Arturo for manpower to install the pipes
ATLAS #1877
- RPC distribution rack shown by Kacper
- Discussion on the distribution of channels (https://indico.cern.ch/event/833241/contributions/3491376/attachments/1875944/3088958/08-07-2019_GAS-reunion.pdf)
- From UX to SG we have two pipes of 28 mm
- TRT
- PLC failure: it was the power supply module and the backplane of the PLC
- TGC
- Replacement of 18 V power supply
- Check with Patrick if there could be an electrical problem for the ELMB—> Beatrice/MIchal
- General
- To dismount MFC and send: MDT, TGC and CMS CSC
CMS #1873
- DT
- restarted in open loop
- Exhaust zimmerli modification now works: problems a cable in festo block disconnected
- Purifier not tested, even not connected
- RPC
- OFF
- Under discussion to re-start system
- GEM
- Ar and CO2 MFCs to change with the new one
- Problem with GE2/1 distribution rack: pipes from experiment swapped —> Beatrice to discuss with GEM people
LHCb #no elog
- RICH1
- in Run with CO2
- to monitor the Air content with the Analysis Chain (O2) and with GC for N2 (every two weeks) —> Mara
- RICH2
- Presentation by Mara showing the status of RICH2 recuperation
- Still leak problem in Purifier A
- Try to read DIP parameters to have some alarm —> Michal/Gianluca
- Presentation by Mara showing the status of RICH2 recuperation
- OT
- SG racks can be sent in Meyrin
Reminder:
- MWPC in run with Ar/CO2
- Rack 64 —> to investigate
PIQUET
- Stop of CMS DT, LHCB RICH2 due to storm
GENERAL
PLC/Software
- Nothing to report
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