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Gas systems project
GAS M&O meeting 02 September 2019
Present: Beatrice, Kacper, Roberto, Patrick, Andrea, Fred, LPh, Mara, Sabino, Fabio, Federico
Indico: https://indico.cern.ch/event/845012/
ALICE #1942
- MTR
Reminder:
-
- Dummy chamber: to ask to Arturo for manpower to install the pipes. Arturo said beginning of September
- Need to do a test on PLC (on/off) —> LPh to check with Martino when it can be done
- TPC
- Rack pump re-building on going
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
ATLAS #1943
- RPC
- Problem with the 13ch manifolds —> not possible to use them —> Andrea is checking with the company
- TRT
- TFC: to keep on
- Kacper will install indicator for cooling water for pump module, then he will add in auxiliary to check if it is working and to check with Michal for a final solution
- MDT
- Rack 68 (ch 17): one channel is keeping going to zero —> try to change the ELMB
CMS #1940
- RPC
- OFF
- Ready to start for the modification of purifier
- 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 on-going
- For the new regulation valve: very difficult to find the place in the rack —> to think about
- DT
Reminder:
-
- Pressure sensor on filter pump modified by adding 1/8 pipe as impedance: not enough, still fluctuation —> to increase the length of the pipe and to change size —> Kacper
- CSC
Reminder:
-
- To check and correct level of oil in bubblers of distribution
- Warning to set-up —> Beatrice/Michal/Roberto
- GEM
- Distribution lines of GE1/1: some lines were swapped. Now all ok
- Distribution lines of GE2/1: not done, to do in the future
- Helped with the installation of a temporary lauda
- ID FLUSHING
- 1 flowmeter must be changed
- the control is not on WinCC-OA —> to check with Michal for adding software (only if ID flushing is on gas team)
- Modification of 24 V: because now they are with TOTEM. New power supply for ID flushing (under discussion)
- To do a meeting to understand what is on our responsibility —> Roberto
LHCb #1941
- RICH1
- in Run with CO2
- until today, we are not taking Air, we are at ~ 400ppm —> Patrick to clean in order to have less O2 to check for Air intake —> Patrick/Mara
- when system is stopped and re-started we take Air: maybe to add CO2 at output bubbler or a volume to avoid to take Air or to check level of bubbler?
- Roberto suggested to increase the pressure in the chamber
- RICH2
- New MFM for the permeate —> Patrick to install on Tuesday
- To fix leak in the membrane pump: wrong VBO was installed (too small) —> Patrick with TTE
- 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
- Nothing to report
GENERAL
- ELMB presentation by Marcin and Gregor
- Number of ELMBs installed ~200, we have 20 spares
- We don’t have any documentation —> looking for it
- Standard ELMB are working ok
- 175 chf/ ELMB
- Motherboard are still produced
- To add in the presentation: #of ELMB changed, failures
PLC/Software
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