GAS M&O meeting 09 April 2020

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

Indico: https://indico.cern.ch/event/906534/

CHECK Gas Systems

• All OK

ALICE

• some alarms are blocked and need to check with Chilo
• TPC purifier is always in manual mode: Chilo do manually the change of column. To understand for Run 3
• Changed of He bottle. Mara to order a new one (1l). In case of leak a bottle of 10 later is already on place

ATLAS

• MDT sensor of rack 66 ch 16 is drifting: no need to change now
• PGS list of sensors not working/not existing: done

CMS

• DT pump maintenance: on Wednesday —> Andrea + Kacper

LHCb

• MWP: Patrick proposed to put a pressure sensor on the back-up line (CO2)
• PGS: MWP_PreMixe was never used —> for MWP_PreMixe and O2 line to change the name with “spare”

GENERAL

• DPT for filters to install when we are back —> to prepare a list where they are missing
• PGS list of sensors not working/not existing: missing ALICE, CMS and LHCb
• List of sensors in force mode ready (elog #2391, #2390, #2386, #2385)

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