GAS M&O meeting 16 September 2019
Present: Beatrice, Roberto, Michal, Andrea, Fred, LPh, Sabino, Fabio, Federico, Luca, Gianluca
Indico: https://indico.cern.ch/event/848559/
ALICE #no elog
- MTR
- Test of PLC (on/off) to reproduce the crash done: nothing happened
Reminder:
-
- Dummy chamber: to ask to Arturo for manpower to install the pipes. Arturo said beginning of September
- TPC
- Rack pump re-building on going
- 7th October: final connection for TPC for the gas system
Reminder:
-
- LPh to prepare a summary on how the system is now —> in 2 weeks
- TRD
- 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
- Purifier: changing material this week
ATLAS #1956
- TFC
- CO2 cooling failure of TRT which stop TFC
- MDT
Reminder:
-
- Rack 68 (ch 17): one channel is keeping going to zero —> try to change the ELMB
CMS #1950
- RPC
- OFF
- Installed one set-up for the regulation valve: to meet this week in CMS to check for space
- Ready to start for the modification of purifier —> this and next week
- with T valves, we have only 5. we put a cap for the sixth one
- Rack 85: problem of pressure sensors in error —> Michal/Patrick to check
- Modification of pre-distribution finished
- DT
- Filter pump: Kacper added 1/16 of capillary for the pressure sensor —> now pressure value is stable —> to implement on other pump modules
- CSC
- Problem on distribution: strange peaks in the regulation valve and some alarms due to low pressure in the rack —> to investigate
- Fond a N2 leak in valve YY6671: repaired
Reminder:
-
- To check and correct level of oil in bubblers of distribution
- Warning to set-up —> Beatrice/Michal/Roberto
- GEM
- Try to run the system but system was not stable: pump in negative pressure
LHCb #no elog
- RICH1
- RICH2
- New MFM for the permeate
- To understand how to proceed with two membranes
- SciFi
- Install racks after Open Days (to finish few things)
- To finish the system by October
Reminder:
- MWPC in run with Ar/CO2
- Rack 64 —> to investigate
PIQUET
GENERAL
- Update from Sabino on the ex-OT Gas System
- Several problems in the gas system material: rotameter full of liquid, manometer not working correctly
- Start to prepare a maintenance procedure for the mixer
- Update from Fabio about CF4 recuperated
- Update from Federico about LHCb CF4 membrane
- Try to work with second membrane
PLC/Software
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