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Gas systems project
GAS M&O meeting 12 August 2019
Present: Beatrice, Kacper, Roberto, Michal, Fred, Gianluca, Sabino, Fabio, Federico
Indico: https://indico.cern.ch/event/840481/
ALICE #no elog
- MTR
- Dummy chamber: to ask to Arturo for manpower to install the pipes
- TOF
- Three power supplies changed
- TPC
- Power supply of 24 V changed, missing the others that will do with the TRD
- Two new filters ordered by Fred
ATLAS #1928
- New o-rings ordered and under aging-test
- TRT
- Exhaust in the distribution modification to finish
- TGC
- To keep checking status of flowcells —> Mara
- Check with Patrick if there could be an electrical problem for the ELMB—> Beatrice/MIchal
CMS #no elog
- RPC
- OFF
- In October RPC will be ready to install several dummy chamber —> to order volumes: Beatrice to check how many
- DT
- Pressure sensor on filter pump to modify by adding an impedance: too many fluctuations —> Kacper
- Also fluctuations in the membrane pressure sensor: to replace 6mm pipe with 4mm (or small) pipe —> Kacper
- CSC
- Warning to set-up —> Beatrice/Michal/Roberto
- Rack 61: strange fluctuations on the regulation valve
- GEM
- Problem with CANBUS reported by Michal:
- rack 61-62 cable not well connected: connector pin were not in the right order
- rack 64 and 65: canbus cards were covered with paraffin oil (coming from RPC bubbler) —> replaced —> to understand with Andrea what happened
- Configuration file (web-mass) with some problem: there were some special characters (from labview application): fixed
- 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
- Remove bubblers in distribution in WinCC-OA and add safety valves —> Beatrice to provide P&DI to Michal
- Problem with CANBUS reported by Michal:
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 stopped because there is something wrong: compressor?
- Found some leaks (http://eloggas.cern.ch/RICH2+Recuperation/34) —> to try to fix them this week
- A couple of leaks appear only when compressor is off (same for CMS CSC): to try to keep the compressor ON all time by adding a line of back flow: Roberto will study how to do
- OT
- All racks installed in building 20
Reminder:
- MWPC in run with Ar/CO2
- Rack 64 —> to investigate
PIQUET
- PCO alarm for CSC (http://eloggas.cern.ch/GAS_PIQUET/819)
- After investigation, the gas system was running
- Probably one valve in distribution rack 61 reached the limit?
GENERAL
- New gas system test-bench (ex-OT)
- Presentation of layout by Sabino
- Decision to have around 8-10 volumes of 10 litre to simulate the detector
- This week: cable tray to install
- WinCC-OA: to add OT in EP-DT-FS
- To take a sample in the return line to analyse for aging test —> Fred
- MFC
- Kacper checked the PID internally in the MFC —> to prepare a summary with comparison wrt WinCC-OA
- Ultrasonic leak detector
- Kacper said that Patrick tested with the company this new leak detector: to ask to Patrick a summary
PLC/Software
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