Meeting 2025 05 22
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
- We replace one 5 slot bp on L14 M1, it is now included in the daq. (https://logbooks.jlab.org/entry/4380439)
- Ben Raydo has pointed out the transceiver looks suspicious on L15 M2. Replacing it seems to make daq happy
- We have also isolated the shorted sector in L9M0 on the G2 and G3 foils. The current draw on G3 is now ~300uA, which we can handle for now
On call expert this week
- Vidura
- Asar
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
