Minutes of the Forward Endcap EMC Vibe/eZuce meeting, 11th of January 2021, 14:00-15:00


  • Bochum: Claudius, Fritz-Herbert, Jan, Miriam, Tobias H., Tobias T., Sebastian, Sven, Tom
  • Basel: -
  • Bonn: Christoph, Tobias S., Ulrike
  • Groningen: -
  • Uppsala: Pawel
  • Giessen: Hans Georg, Markus, Thorsten
  • GSI: -

Recheck of Irradiation Simulations and Bonn Calculations:

  • Summary: All simulations and calculations correct and in accordance
  • Ratio of 10 (0.7 Gy calculated/simulated vs. 7 Gy reading of dosimeter) resulting from small Si-layer in APDs, ICs etc. Dosimeter reading referring to tissue (higher thickness).
  • No consequence for APD irradiation expected: APD samples irradiated with way higher doses without effecting operation (gain, dark current)
  • To be taken into account when irradiating electronic components!

Submodule Production:

  • Next delivery (Thursday this week) submodule transport to Bonn only, FZ Jülich is still in restricted access, start of delivery to Jülich unclear
  • Submodule transport handle return from BN with next delivery

SADC crate power supplies:

  • Final power supply modules not very sophisticated but efficient (design okay)
  • Radiation hardness tests passed
  • Drawback: Low switching frequency requires bigger air coils
  • Fixing central holes of coil toroids also usable for fixing supplies to cooling flanges
  • For thermal tests one should consider 2W/ADC for the final supplies (about 90% efficiency)

Data Concentrators:

  • 1st produced module arrived at Uppsala
  • Start of testing from next week on

-- ThomasHeld - 25 Jan 2021
Topic revision: r1 - 2021-01-25, ThomasHeld
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