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Gas systems project
GAS M&O meeting 14 July 2022
Present: Beatrice, Roberto, Patrick, LouisPhilippe, Andrea, Michal, Mara, Gianluca
Indico: https://indico.cern.ch/event/1180833/
ALICE #4264
PREVIOUS:
TRD: to move pump regulation valve —> LPh w26- TOF: problem of O2 intake
- TOF: to check mixer injection and zimmerli—> Gianluca w26
- TPC back-up in error
TPC: Vaisala sensor to check —> w27
MID: the two pumps behave differently! For piquet: if pump need to be changed --> to go in placeto check non-return valve of pump —> LPh w26
- AUX: check O2 calibration for 1 day —> LPh w26
NEW:
- TRD: high humidity warnings —> to check purifier —> LPh + Gianluca plot
- CPV: spikes in vaisala + contact company (problem also in other Vaisala)—> LPh w28-29
- MID: GC set-up test —> MCA w28-30
- MID: to do a fine tuning of flowcell/zimmerli + check 2nd pumpà LPh when access available
- AUX: check O2 calibration for 1 day —> LPh w26
- Analysis chain 3 to replace one electrovalve à LPh w30
ATLAS #4265
PREVIOUS:
RPC: back to std gas mixture today/tomorrowMDT: stop due to maintenance on CO2 line --> gas system off if mixer off —> to check logic with Philip and if ok, change to not stop the mixer if mixer off (to set also alarm delay in mixer) —> Gianluca w26ID flushing: work on-going for humidity problem with CO2 —> Kacper w26-27- CO2 line with high flow --> to check Kacper
- to check alarm FG and ODH failure with Nicolas Broca —> Gianluca w26-27
NEW
- MDT: humidifier drawings not correct —> Michal w28
- MDT: vaisala spikes —> Kacper/LPh w29
- MDT: table of problematic sensors —> Kacper w31
- RPC: old IR to send to company —> Kacper w30
- RPC: check rack 66 alarm —> Gianluca w28-29
- RPC: purifier 2 investigation
- ID flushing: Krohne reading CO2/Air à Kacper/Michal w29
- RPC: IR to add small black pump to reinject gas à Patrick/Kacper September
CMS #4262
PREVIOUS:
- CSC: O2 sensor problem to fix —> Andrea w26
MFC Ar in force mode to check for profibus problem: important to fix as we cannot move to HF —> Patrick w26third pump to buy —> Kacper w26-27
RPC: test on-going for R134a recuperation, injection of mixer is changing- RPC:
SF6 concentration at 0.35% with GC analysis —> Mara to check with RPC team —> w25
NEW
- PGS: iC4H10 MFM to check with David —> Mara w28
- CSC: O2 sensor —> check device with O2 bottle à Andrea/Mattia w28-29
- CSC: installation of spare pump from workshop —> Kacper/Andrea/Patrick w29
- RPC: test HF MFC SF6 —> MCA/Mara w29
- RPC: IR swap with one ok for aging and then check IR calibration —> Andrea/Mara/MCA w29
- RPC: IR to add small black pump to reinject gas à Patrick/Andrea September
- RPC purifier 2 conditioning phase —> Michal/Beatrice w29
- RPC R134arecup: reparation compressor à Andrea w29
- RPC valves PID: summary àMattia w29
- RPC Mixer: HF MFC R134a valves to check -> Mara summary w29 à Kacper w29-30
- DT flowcells: check ID --> Michal w29
LHCb #4266
PREVIOUS:
RICH1 and 2: alarm on mixer injection now active- RICH1: summary of test performed + conversion mass/flow —> Maria Cristina w27
RICH2: to complete set-up for IR and to do calibration —> Mara/Patrick w26-27RICH1 and 2: add vaisala in volume buffer for testing column —> Patrick w26- MWPC exhaust MFC fluctuating —> Mara w27
NEW
- RICH2: check IR: 4 digits in measurement and 970 mbar in Bronkhorst to regulate à Michal/Patrick w28
- RICH2 IR: to check operation à Beatrice/Patrick w29
- RICH1/2: test emptying purifier —> MCA/Beatrice w29-30
- PGS: filling CF4 battery with CF4 empty bottles —> Patrick
- MWPC exhaust MFC fluctuating —> Mara w27-29
- SCIFI: calibration bottle for Vaisala UX à Patrick w30-31
- RICH1: preparation installation Vaisala fSET-UPix à Patrick w30-1
- RICH1: check of injection mixer à Beatrice w29
GENERAL
- KNF black pumps: 3-4 to fix —> LPh with Herve —> w26 (pumps needed for IR)
- ANALYSIS CHAIN: to have Ar and to put in long cycle before O2 and H2O calibration (software) à feedback from Gianluca/LPh w29
- Aging test vaisala —> mara w26
NEW
- to buy 2x O2, 2xH2O, 2xIR RPC calibration bottles for each site à all
- Summary of Omron MFM à Mattia w30
- Short and long cycle time to fix in Analysis chain à Michal w28-29
- Webmass problem: to verify how to receive an email in case of problem and to buy new spares à Michal
PIQUET
- #1856: ATLAS RPC “Value=TRUE XMFC5121 - Moisture regulation not accurate enough.” à Kacper w29
- #1865: ATLAS ODH alarm à to remove from piquet à Gianluca w31
- #1878: CMS N2 PGS: to set alarm in N2 pressure in AUX à Michal w29
- #1879: ALICE Analysis channel 143 alarm (Ar vs H2O) à LPh w28
- #1892-6: ATLAS RPC alarm à to check with RPC team à Beatrice/Gianluca w28
- ATLAS and CMS RPC H and HH for chamber pressure: to check limits à Beatrice/Mara/Gianluca w29
TS September
- CMS DT analysis rack installation (start in MD)
- CMS GEM: installation of 1 um filter in common supply and return (stop of system needed)
- CMS GEM: replace zimmerli mixer: to order ASAP à Andrea
- CMS RPC: change seat regulation valve group 3
- LHCb RICH1 cleaning (start in MD)
- LHCb UT commissioning???
- ALICE MID: to do a fine tuning of flowcell/zimmerli + check 2nd pumpà LPh when access available
EYETS
- CMS CSC: movement of exhaust regulation valve in USC à EYETS
- CMS RPC: new filters for distribution racks —> EYETS
- ALICE TPC: back in error -> EYETS
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