Minutes of the Forward Endcap EMC Vibe/eZuce meeting, 24th of August 2020, 14:00-15:00

Presence:

  • Bochum: Matthias, Jan R.,Malte, Miriam, Tobias H., Tobias T., Sebastian, Thorsten
  • Basel: -
  • Bonn: Christoph, Johannes
  • Groningen: -
  • Uppsala: -
  • Giessen: Hans Georg, Markus

Submodule Measurements Bonn:

  • There is a problem with one APD in one of the submodules currently under test: Need to figure out if the failure is real or just a cabling problem or something like that.
  • We decided to have another exchange of submodules by Christoph in Bochum in the near future. Christoph will also bring HV distributor boards
  • Drifting of set voltages on the HV distributor boards is still not fully understood. Using a 100 (or 22) MOhm instead of the 10 MOhm one currently used seems to lower the drift and is therefore suggested to use by Christoph
  • A casting compound (like Elastosil we use for read out unit casting) on the resistors may help in preventing surface currents
  • One one submodule there seems to be a problem with noise introduction from a temperature sensor to the respective channel (need to take a closer look at it, never observed any problems like that in Bochum)

SADC Crates:

  • Fritz-Herbert asked what power (voltage, current) needs to be supplied to the SADC crate power supplies (+ 12 V only?, what current?)

-- ThomasHeld - 04 Sep 2020
Topic revision: r1 - 04 Sep 2020, ThomasHeld
 
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