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Gas systems project
GAS M&O meeting 03 June 2019
Present: Beatrice, Patrick, Andrea, Fred, Kacper, Luca, Roberto, Michal, LPh
Indico: https://indico.cern.ch/event/823532/
ALICE #no elog
- MTR
- modification: under discussion with Arturo —> No manpower to install the pipe and cable until July —> LPh to follow up
- TPC
- to finish piping connection for the surface
- Pump to send in maintenance
- TRD
- discussion on rupture disk to install
- they want to have all maintenance done by October
- PLC+logo to do in September and to check for flowcells problem
- to stop last week of August for all maintenance (total 3 weeks)
Reminder:
- MTR problem with humidifier (with GC we measure 1/3 of H2O with respect to the beginning of the test) —> LPh to investigate
ATLAS #1833
- RPC
- O2 sensor spikes: due to disconnection of chambers in the system
- TRT
- They need new pipes in distribution racks —> Kacper
- Valve island
- Finishing valve island panel, only the one of RPC postponed to when the system will be in stop
- TGC
- Investigation of flowcell status —> Michal/Mara next week
- Missing 18 V power supply —> done
- We need to add 48 flowcells for the NSW: do we have them? —> Fred to follow up with Michal
Reminder:
- Flowcell for new RPC racks —> Kacper to give the flow necessary —> to decide if 3 or 5 mm
CMS #1830
- DT
- Differential pressure sensor mounted —> missing electrical connection —> Andrea/Patrick
- RPC
- OFF
- Modification of piping for injection mixture from purge
- Need to change the MFC of R134a with the one of ATLAS: piping to modify
- 3.1 distribution racks: missing pipes and electrical connection
- GEM
- Installation positive racks mid-June (13/06)
- Missing quicks in GE2/1
- Ar and CO2 MFCs to change with the new one and to install safety valve in distribution rack
- Beatrice to check when they want to run the gas system
- Other
- AUG test postponed due to fire alarm
- Problem with PGS in SF6 in the scale of battery (13/05) —> Michal to investigate
LHCb #no elog (Patrick in sick leave)
- RICH1
- in Run with CO2
- to monitor the Air content with the Analysis Chain (O2) and with GC for N2 (every two weeks) —> Mara
- it seems we are already taking Air
- RICH2
- In Run
- Finishing modification to recuperate CF4 (modify piping to have membrane + purifier and add remote control of the compressor) —> this week
- Check maximum flow that we can send to compressor —> Luca
- Summary of membrane test: http://eloggas.cern.ch/RICH2+Recuperation/20
- OT
- SG racks can be sent in Meyrin
Reminder:
- MWPC in run with Ar/CO2
- Rack 64 —> to investigate
PIQUET
- Nothing to report
GENERAL
- Add folder in GasGroup for the technical documentation: done
- Start to clean-up GasGroup folder
PLC/Software
- TOF PLC: few problems with I/O of purifier to fix tomorrow and then to try to turn it (especially for purifier)
- Next week MTR
- CSC would like to change the date of PLC upgrade —> Beatrice to check
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