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Gas systems project
GAS M&O meeting 1 July 2019
Present: Beatrice, Andrea, Kacper, Roberto, Michal, Gianluca, Mara
Indico: https://indico.cern.ch/event/831298/
ALICE #no elog
ATLAS #1868
- ATLAS TGC
- Discussion about TGC flowcell status by Michal: https://indico.cern.ch/event/831298/contributions/3481980/attachments/1871550/3079937/ATLAS_TGC_Canbus_diagnostic.pdf
- Motherboard changed in rack 62 and 63: now the reading input/output is correct
- Problem in flowcell #1 is fixed by changing the ELMB: it looks like it appeared after a power-cut
- Next steps (in this order):
- Change 18 V power supply —> Kacper
- Change motherboard and ELMB in another rack —> Michal/Kacper
- Check with Patrick if there could be an electrical problem —> Beatrice/MIchal
- Wait few months and monitoring the situation —> Mara
- TRT
- Maintenance of safety valves this week
CMS #1861
- DT
- New pneumatic pipes installed as well as new rack
- Exhaust zimmerli modification doesn’t work
- RPC
- OFF
- Qualification of buffer volume
- RE+3 will be installed this week and next Monday it will be RE+4
- Modification of piping for injection mixture from purge in pre-distribution —> to do
- GEM
- New FESTO controller installed
- Need to connect all pneumatic lines this week
- In UX the pipes were not in the right place (GE2/1-GE1/1+), Zec is replacing and then we can do the final connection of pipes
- GE2/1 - all pipes are mixed up: http://eloggas.cern.ch/GASSYSOperation%26Maintenance/190628_115943/Manifold-top_plate_numbering.png —> to meet with Daniel and ask to modify pipes
- Ar and CO2 MFCs to change with the new one
- OTHER
- Last week there was not power and this caused a delay in the software testing for DT
- Changed power supplies for CSC, DT, RPC
- Andrea removed safety valves in the supply of the mixer for CSC, DT, RPC
LHCb #1865
- 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
- In Run
- column A of purifier is leaking —> to search for leaks on Thursday/Friday
- Mara gave a summary of the results (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
- Profibus card
- Presentation by Krzysztof: https://indico.cern.ch/event/831298/contributions/3482829/attachments/1871552/3079940/2019_07_1_Rypysc_PXM.pdf
- Slides about the possible options of the new profibus card
- Roberto asked what are the differences wrt old profibus card
- In next weeks try to check the profibus card in one of system already done and also read the signala
- MFC PID
- To find a way to check the PID of the MFC
- This week: dismount the high flow MFC and check PID —> Kacper
- Standard maintenance
- Prepare a list for the maintenance —> Beatrice
PLC/Software
- Discussion on DT PLC replacement
- General: do not re-start a system if all fundamental tests have not been done (I/O check, interlock tests, etc)
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