Gas systems project

Thursday 16 Apr 2020, 09:00 → 13:20 Europe/Zurich

155/R-047 (CERN)

Beatrice Mandelli (CERN)

GAS M&O meeting 16 April 2020

Present: Beatrice, Roberto, Andrea, Patrick, Kacper, LPh, Fred, Michal, Mara, Gianluca, Sabino, Fabio, Federico, Leonardo

Indico: https://indico.cern.ch/event/909752/

 

 

CHECK Gas Systems

 

 

 

ALICE

TPC

• by mistake LPh started the cO2 absorber and we have a big loss of gas. Problem fixed by piquet

TRD

• two stops due to profibus problem but able to restart as system
• Patrick and Fred went on place: found two profibus connectors not well closed. These connectors were installed with the new PLC
• Profitrace installed in place to check for other possible problems

ATLAS

• nothing to report

CMS

• Lower of gas flow for the chilled mirror of the humidifier
• Humidifier of RPC is stable because is not injecting any water. This is due to the fact that we don’t use the purifiers
• DT pump maintenance:  change of membrane for pump 1 and 3
• Ar/Co2 batteries almost empty. New batteries already at P5

LHCb

• nothing to report

GENERAL

• Chilled mirror needs between 10 and 20 l/h. The lower is the flow, the higher is the time to perform the measurement
• Profibus check has to be done before and after the change of PLC
• Summary of status of alarms done by Mara
• Level of PGS sometimes is > 100% —> Michal to check
• PGS list of sensors not working/not existing: missing ALICE, CMS and LHCb

Actions:

• To prepare a list of sensors not working or missing in PGS —> Experiment technical responsible
• Excel file for alarms prepared weekly by Mara —> Experiment technical responsible to fill

09:00 → 09:10 SMS alarms from gas systems

Speaker: Mara Corbetta (Universite Claude Bernard Lyon I (FR))

Summary_Alarms.xlsx

link to weekly SMS alarms

https://espace.cern.ch/gas-control/Shared%20Documents/Forms/AllItems.aspx?RootFolder=%2Fgas%2Dcontrol%2FShared%20Documents%2FActivities%2FSmsMail%20notification&FolderCTID=0x012000852472212F969B4E9850475116730F2C

 

link to gas system checklists 

https://espace.cern.ch/gas-control/_layouts/15/start.aspx#/Shared%20Documents/Activities/GasSystemsChecklist/

 

09:10 → 09:20 Reminder of activities to do at the re-start

Speakers: Andrea D'Auria (CERN), Beatrice Mandelli (CERN), Frederic Merlet (CERN), Gianluca Rigoletti (Universite Claude Bernard Lyon I (FR)), Kacper Jerzy Kapusniak (CERN), Louis-Philippe De Menezes (CERN), Mara Corbetta (Universite Claude Bernard Lyon I (FR)), Michal Zbigniew Zimny (CERN), Patrick Carrie (CERN), Roberto Guida (CERN), Sabino Zagaria (Universita & INFN Pisa (IT))

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 (Fred)

• Move the IR analyser inside the Exhaust module
• Fill the 3rd purifier?

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
• (Mara) Isobutane 5% calibration for IR and GC
• (Fred) Change product Purifier 1 & 2 and fill purifier 3?

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
• canbus cable to be replaced (elog #2320)

CF4 Recovery (Mara)

• MFCs Installation
• Fix leaks column B CF4 adsorber
• Install new storage battery
• Test new compressor

 

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”k
• (Mara) Ageing test of CO2 IR module 
• (Mara) 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 before and after the change of PLC —> Michal + somebody else
• (Mara) Ageing test of black flowmeters Omron

09:20 → 09:30 M&O and project organization

Speakers: Beatrice Mandelli (CERN), Roberto Guida (CERN)

09:30 → 09:40 Overview of planning LS2

Speaker: Beatrice Mandelli (CERN)

09:40 → 09:45 Piquet interventions

http://eloggas.cern.ch/GAS_PIQUET/

Speakers: Andrea D'Auria (CERN), Beatrice Mandelli (CERN), Frederic Merlet (CERN), Louis-Philippe De Menezes (CERN), Patrick Carrie (CERN), Kacper Jerzy Kapusniak (CERN), Michal Zbigniew Zimny (CERN)

09:45 → 09:50 Activities on-going

Speakers: Beatrice Mandelli (CERN), Frederic Merlet (CERN)

09:50 → 10:10 Plan of LS2 activities

Speakers: Beatrice Mandelli (CERN), Frederic Merlet (CERN), Roberto Guida (CERN)

10:10 → 11:35 Gas systems for the LHC experiments

10:25 ALICE

Speaker: Louis-Philippe De Menezes (CERN)

10:30 ATLAS

Speaker: Kacper Jerzy Kapusniak (CERN)

10:35 CMS

Speaker: Andrea D'Auria (CERN)

10:40 LHCb

Speaker: Patrick Carrie (CERN)

10:45 Gas analysis: standard H2O/O2

Speaker: Louis-Philippe De Menezes (CERN)

10:50 Gas web-page

http://test-gasmonitoring.web.cern.ch
https://ep-dt-gasanalysis.web.cern.ch

Speaker: Beatrice Mandelli (CERN)

10:55 Software

Speaker: Michal Zbigniew Zimny (CERN)

11:35 → 12:25 Gas System developments

11:35 Gas System Test-Bench

Speakers: Fabio Bordon (CERN), Sabino Zagaria (Universita & INFN Pisa (IT))

11:45 CMS CF4 recovery

Speakers: Fabio Bordon (CERN), Mara Corbetta (Universite Claude Bernard Lyon I (FR))

11:55 LHCb RICH2 CF4 recuperation

Speakers: Federico Consolaro (CERN), Mara Corbetta (Universite Claude Bernard Lyon I (FR))

12:05 R134a Recuperation

Speakers: Federico Consolaro (CERN), Gianluca Rigoletti (Universite Claude Bernard Lyon I (FR)), Ian Crotty (University of Wisconsin Madison (US)), Mara Corbetta (Universite Claude Bernard Lyon I (FR))

12:15 AoB

Speakers: Fabio Bordon (CERN), Federico Consolaro (CERN), Gianluca Rigoletti (Universite Claude Bernard Lyon I (FR)), Mara Corbetta (Universite Claude Bernard Lyon I (FR)), Sabino Zagaria (Universita & INFN Pisa (IT))

Working folder for Checklists of ATLAS, ALICE, CMS, LHCb:

https://espace.cern.ch/gas-control/Shared%20Documents/Activities/GasSystemsChecklist

Checklist for ALICE:

https://espace.cern.ch/gas-control/Shared%20Documents/Activities/GasSystemsChecklist/ALICE/ALICE_checklist.xlsx?Web=1

Exported Alarms for all systems in ALICE (todo):

https://espace.cern.ch/gas-control/Shared%20Documents/Activities/GasSystemsChecklist/ALICE/ALICE_alarms_toreview.xlsx?Web=1

Checklist for ATLAS:

https://espace.cern.ch/gas-control/Shared%20Documents/Activities/GasSystemsChecklist/ATLAS/ATLAS_checklist_v2.xlsx?Web=1

Exported alarms for all gas systems in ATLAS (on going):

https://espace.cern.ch/gas-control/Shared%20Documents/Activities/GasSystemsChecklist/ATLAS/ATLAS_Forced-Blocked.xlsx?Web=1

 

12:25 → 12:35 FSU & Jobs status

Speaker: Frederic Merlet (CERN)

12:35 → 12:45 AoB

Speakers: Andrea D'Auria (CERN), Beatrice Mandelli (CERN), Frederic Merlet (CERN), Louis-Philippe De Menezes (CERN), Patrick Carrie (CERN), Roberto Guida (CERN)