Difference between revisions of "Meeting 2025 05 29"

Latest revision as of 21:50, 28 May 2025

GMn GEM commissioning Meetings: WEDNESDAY 10:30am - 11:30am

Link to all previous meetings: GMn GEM Commissioning Meeting

Please use sbs_gems mailing list for plots/communications and HALOG entries relevant to GEMs!

Work in the hall

• Asar, Jacob and Vidura replaced an HDMI cable on Wednesday
• testing of HV correction
• beam current dependent correction

On call expert this week

1. Asar
2. Ching Him

Remaining APV issues

Remaining issues:

L3 UV: 4-slot backplane APV 11 (GEM bunker side, top to bottom: 0000 0000 000 000 0000 0000 X000) Was giving errors when coda is running PATH: (vtp3 f3) crate0_MPD_GEP/MPD_vmeSlot_17.cfg

L14 XY M1: 5-slot backplane (Beamline side) - Seems to be an LV /backplane issue PATH: (vtp2 f18) crate5_MPD_GEP/MPD_vmeSlot_4.cfg

L14 XY M2: 12-slot backplane ADC 8 (Towards beamline) - Commented out PATH: (vtp4 f27) crate4_MPD_GEP/MPD_vmeSlot_20.cfg

Hard to fix:

L3 UV: 3-slot backplane ADC 14 (top 3-slot, beam line side) - Risky to replace especially without first replacing the MPD PATH: (vtp3 f0) crate0_MPD_GEP/MPD_vmeSlot_14.cfg

L6 XY M1: 12-slot backplane ADC 11 (towards beam line) - CANNOT BE REPLACED (buried underneath module) PATH: (vtp4 f2) crate2_MPD_GEP/MPD_vmeSlot_8.cfg

L12 XY M2: 12-slot backplane (APV 8, closer to GEM bunker) - APV has been replaced previously but remains stuck, commented out now PATH: (vtp4 f14) crate4_MPD_GEP/MPD_vmeSlot_7.cfg

L13 XY M1: 12-slot backplane adc 4,5- Commented out (problems seem to jump around a lot on his fiber) PATH: (vtp4 f20) crate4_MPD_GEP/MPD_vmeSlot_13.cfg

https://redmine.jlab.org/projects/sbs-daq-gep-gems/issues