Minutes of the Forward Endcap EMC Vibe/eZuce meeting, 3rd of May 2021, 14:00-15:00

Submodule Logistics:

  • 3rd transport to Jülich was Thursday last week
  • Need to improve access situation for driver from RUB - up to now an IKP staff member had to pick up submodules at the gate
  • Next time Claudius will do the transport to Bonn and Jülich in order to unpack submodules and return boxes and handles for reuse

Submodule Cosmics Tests:

  • 15 out of 48 submodules tested so far show wrongly cabled (HV or LV) or labeled units or mixups of APDs in capsules. A mixup of HV cable positions in the 12-pin plugs may be a further source of mistakes - easy to check and solve, though.
  • Need to repair all of these units and improve the manufacturing and testing process in Bochum in order to avoid such mistakes in the future
  • First measure will be the introduction of separate HV supplies for both APD channels of each unit instead of a common HV supply. That would uncover cabling failures at the first test step.
  • Additionally we will colour code the APDs (red and blue dots on ceramic frame edge, readable from photo active side and staying visible after gluing to capsule)

-- ThomasHeld - 06 May 2021
Topic revision: r1 - 06 May 2021, ThomasHeld
This site is powered by FoswikiCopyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding PANDA Wiki? Send feedback
Imprint (in German)
Privacy Policy (in German)