REMINDER for when we will be back

 

ALICE

CPV

• We have 3 lines input that are ok, and 3 lines output: in one there is not the return. LPh contacted Yuri

TPC

• In the purifier the small thermic box triggered (also last year it happened) —> Patrick/LPh to check

TRD

• Recuperation: missing two valves but there are present in the software
• 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

MDT

• Check overpressure in MDT chamber when there is a stop-start of the system
• Only one convertisseur, one pump, etc from the system —> Patrick/Kacper to fix
• Found a problem of grounding on pressure sensors: pressure sensors changed. Now to verify if the grounding problem is still there
• Problem in the 2 vaisala of humidifier: several spikes present. Not clear why. Before the software upgrade they were not present

RPC

• Fill 3rd purifier
• IR analyser to move in exhaust module: to schedule later when there will be PLC change

 

CMS

RPC

• Michal changed the mother board in rack 67: now flow is 170 l/h (elog #2279) —> Andrea to check with new voegtlin red
• Calibration of IR and GC for iC4H10 —> Mara
• Change material of purifier 1 and 2 and fill 3rd (only when RPC will be in stop, probably September/October)

DT

• Change one motherboard in rack 61 but flow didn’t change (elog #2280) —> to try to recalibrate one set of flowcells
• Difficult to re-start the gas system after power-cut —> to do some tests
• Test for power cut and re-start for the exhaust line —> to do other tests

GEM

• Andrea prepared a drawing for ME0 and check for space in UX —> Andrea to send an email to Michele

CSC

• On-going regulation of PID for the exhaust —> Beatrice
• Warning to set-up —> Beatrice/Michal/Roberto

CF4 recovery

• Install new storage battery —> Andrea
• New MFC installation
• To fix leaks in column B of CF4 absorber
• Test new compressor

PGS

• Check Freon supply > weight on side A/B (Mara)

GENERAL

• Check of bande-chauffantes under floor and panel in

 

LHCb

 

MWPC

• Problem in the GC analysis of the mixer: not visible the correct gas mixture with both LF and HF. Probably an hardware problem (connection, valve, etc) to find —> Mara
• Leak in Mixer and Exhaust. Only in Exhaust found but not repaired. Other not yet founded —> Patrick

RICH2

• To inject Air —> Patrick to check with C. Frei
• To add line for analysis “supply to detector”
• GC analysis of recuperated CF4

SciFi

• Problem on 3-ways valve —> Patrick

PGS

• Interlock of Ar/H2 does not work —> Michal/Patrick to check

 

GENERAL

 

• Alarms/Errors in power supplies for all gas systems —> Patrick
• Profibus check has to be done before and after the change of PLC —> Michal
• Check of all Profibus connectors —> Patrick
• Aging test of: black flowmeters Omron, LHCb CO2 IR, RPC new exhaust flowmeter, LHCb Coriolis