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Gas systems project
GAS M&O meeting 29 July 2019
Present: Beatrice, Andrea, Kacper, Roberto, Michal, Fred, Gianluca, Luca
Indico: https://indico.cern.ch/event/837860/
ALICE #no elog
- MTR
- Dummy chamber: to ask to Arturo for manpower to install the pipes
- When re-started system there were several recipes not active
ATLAS #1917
- TRT
- On-going modification of pipes in exhaust
- TGC
- To keep checking status of flowcells
- Check with Patrick if there could be an electrical problem for the ELMB—> Beatrice/MIchal
- MDT
- Started P&ID modification for the second pump
CMS #1909
- DT
- changed one ELMB+motherboard because flow of one distribution rack was at zero
- RPC
- OFF
- Discussion about re-starting in November: to meet this week to prepare the list
- CSC
- Found one leak on red valve in distribution rack
- Tune of two Zimmerli in exhaust
- During storm, buffer went to 850 mbar and need to regulate exhaust: to check if the regulation valve of the pump works correctly because with 850 mbar there should not be any problem
- Flow in one distribution rack was at zero: the cable of the ELMB was damaged: modified by Michal
- GEM
- First test for commissioning
- Still to change the MFC
- Regulation valve in pump was mounted on the other way around
- Missing pressure sensor in distribution on output in WinCC-OA —> Michal to ask to Marc to add
- There is not pressure sensor on chamber —> to take out in WinCC-OA
- New distribution channels connection by Daniel: to test each channel —> Daniel and Andrea
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
- Recuperation on-going
- OT
- SG racks can be sent in Meyrin —> Luca
Reminder:
- MWPC in run with Ar/CO2
- Rack 64 —> to investigate
PIQUET
- During storm, CMS CSC buffer went to 850 mbar and need to regulate exhaust: to check if the regulation valve of the pump works correctly because with 850 mbar there should not be any problem
GENERAL
- CF4 Recovery
- Luca gave a summary about status of CF4 recovery
- Regulation valve
- Luca gave a summary about status of test of regulation valves
- Next step: to test with R134a and still look for companies
- Fred suggested to look for a motor to move the manual valve
- Beatrice suggested to add a second line in the pre-distrubution in CMS RPC to test the valve directly in CMS during the period November-February when system will be on
- ELMB
- Discussion about ELMB stock: Michal to check how many ELMB we have
- MFC
- Kacper checked the PID internally in the MFC —> to prepare a summary with comparison wrt WinCC-OA
PLC/Software
- Nothing to report
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