Production

• station 1 (2x CG3G detector)
  • fully produced
  • equipped
  • installed to GM11 position
• station 2
  • mechanics fully produced,
  • mech. equipped
  • located at Bonn
  • electronics
    • everything ready except for
    • APV bonding (>10 PCBs available, ~40due)
    • PVD boards 300µm to be exchanged by thicker ones (delamination issues)

Installation station 1

• LV power supply NGP800
  • 1 PS enough for 1 station
  • serves as ADC supply, APV supply, and center segment control (NEW)
  • implemented to DCS - GM11
  • center segment switching box + ETH484 -> replaced by NGP800 channel + Bourndy connector (NEW)
  • issue with OVP when sense wires connected and LOAD executed -> solved by firmware update
• Tests May-June: test with readout pcb foil @ clean area (V. Frolov, S.Huber, I.Konorov)
  • communication (1-way) established - data is sent from APV
  • LOAD command works and configures APV chip
  • reasonable current draw ~5A per detector after LOAD
• Tests June-July: tests @GM11 position
  • fixed issue with OVP of NGP800 power supply
  • mapping illustrations and config files for gemMonitor created
    • APV count <> FPGA firmware channel
    • APV geoID <> ADC | MUX ...
    • implemented in gemMonitor config file
  • data looks bad
    • sync tick marks are seen on decoded data
    • suggestion: data decoding issue on hardware level (between APV and ADC)
  • in contact with APV hardware specialists

Installation optimization potential for station 2

• most of preparation performed at CERN -> Bonn
• LV / HV cables and cable trees ordered at local e-workskop
• thread adaptors M3-M4 ordered at local workshop
• shielding foil designed beforehand -> production by laser cut company
• shielding support structure from ROHACELL (solid foam) designed and in production by local workshop

Off-topic - PGEM

• occupancy: triangles of different occupancies since ~2018..2021
• look at a0/a1 vs TCS phase shows different s-curves for the chips belonging to the two triangles
• s-curves separated by in time
• possible reasons
  • BusCard
  • ADC card / ADC transition card
  • LV supply
• approaches in order
  • latency scans - correct for shift
  • replace deutronics power supply by lab power supply
  • replace ADC transition card
  • replace detector