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 place
  • to 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 2^nd 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/tomorrow
• MDT: 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 w26
• ID 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 w26
  • third pump to buy —> Kacper w26-27
• RPC: test on-going for R134a recuperation, injection of mixer is changing

• RPC: change of PID for some regulation valves —> Mattia w26 and 27
• 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 w26-27
• RICH1 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 2^nd 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