MPS Minutes 20210527

Present: MA, RC, AD, HH, KL, RN, AL (recorder)

E-hall work

• AL, MA connected all detectors in e-hall on Tuesday and tested all PMTs with LEDs except EHAT:PMT4, which had an SHV connector on LED cable in the hall instead of BNC. But label was correct. HH to replace connector after meeting.
• Also tested all LICs by ramping up voltage and checking response.
• AL changed all high energy labels on the roof and reconnected things.
• MA reconnected all Ar lines. Now have sufficient flow rate. But turned off Ar for now until we expect beam.
• Helmholz coil was installed this morning. AL, MA to install low energy detectors today. And install spare detector for diagnostics as requested by Brandon.
• After low energy detectors are installed, work in e-hall should be finished for the moment.

Fibre

• No update
• MA to test PMT
• Might use empty channel on module 1

AOB

• HH replaced broken HV connector on roof for ELBT:PMT1C.
• AD to correct LED label in epics on driver from EHBT:PMT4 to EHAT:PMT4.
• MA: Wiki now accessible without vpn connection. Should be ok, as documents are only linked and not uploaded. To access those one still has to use vpn.
• AL still needs to write up doc for LED calibration. For LICs, we'll probably just use regular spills (in between targets for instance) to test LIC response in the future.
• MA, AL to do Post-Mortem tests.
• AD approved Martin's document in docushare.