Minutes of the forward endcap EMC eZuce SRN meeting, 1st of July 2019, 14:00-15:00


  • Basel: -
  • Bochum: Claudius, Fritz-Herbert, Matthias, Tom
  • Bonn: Christoph, Tobias
  • Groningen: -
  • Stockholm: -
  • Uppsala: Pawel
  • Giessen: -
  • GSI: -

SADC Crates:

  • Pawel reported from the SADC Crate Power Supply irradiation at KVI last week:
    • Module tested contained four power supply channels, one controller, one driver
    • Module survived dose of 10^11 protons/cm^2
    • 1 channel stopped working at 1.3*10^11 protons/cm^2
    • 2nd channel stopped working at 2.4*10^11 protons/cm^2
    • Is a radiation withstand of 10^11 protons/cm^2 enough?
    • Dose rate this time much lower than in previous irradiation tests, damage, however, occured at about the same total dose (no rate effect)
    • What exactly died on the boards is not yet clear - items still to hot to handle (need to wait for declining acvtivity)
    • An inspection of the first irradiated power supply did not take place yet either
    • A radiation hard alternative may be the CERN supplies (less efficient)
    • 15 power supplies we need soon for the endcap erection in Juelich

Submodule Cabling:

  • Monday next week Christoph will come to Bochum in order to verify estimated signal cable bundle lengths on the endcap (using SADC crate mock-ups w/ original backplane PCB)

Data base:

  • VPTT submodule measurement summaries from Bonn need to go into data base
    • Implementation by Tobias (still not available)
    • How to put data in?
    • Interface to upload csv-tables would be nice

- ThomasHeld - 01 Jul 2019
Topic revision: r3 - 2019-07-11, ThomasHeld
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