Minutes of the forward endcap EMC eZuce SRN meeting, 16th of January 2017, 14:00-14:45


  • Basel: Werner
  • Bochum: Cathrina, Claudius, Fritz-Herbert, Matthias, Malte, Miriam, Tom, Tobias H., Tobias T.
  • Bonn: Christoph, Merlin, Matthias and more...
  • Groningen: Myroslav
  • Stochholm: -
  • Uppsala: excused
  • Giessen: -
  • GSI: -

VPTT Subunit Production Preparation:

  • For B-field screening only the tubes in BO currently under 1000 V gain measurement missing (plus preseries ZG-versions...)
  • BO gain measurements finishing next week
  • As soon as we have enough VPTTs fully screened to equipp all VPTT, Merlin will do the crystal-tube assignment and subunit grouping
  • Werner has all remaining preamps (high gain - 0.9 V/pC) manufactured and tested, delivery at next chance (someone going to Germany anyway...)
  • In order to start subunit manufacturing already "now", Merlin will prepare a sorting for a 'mean' subunit to start with (it turned out that there is no subunit not needing all three preamp types (gain) and the high gain versions are still in Basel - asked Werner for 16 pieces to be send to BO)

Annealing LED and I2C power supply:

  • For supply of I2C components on the distributor boards an LDO regulator supplied by the +6V preamp supply line is foreseen
    • It has to be checked that there will be no noise introduction to the preamp circuitry
  • The annealing LEDs have been checked to not compromise the noise performance of VPTT channels (different scenarios tested: open wires to LED, power supply connected to LED, switched on/off etc.)
  • Discussion of annealing LED supply:
    • Individual, parallel connected I2C switched LEDs - too much circuitry, risk of I2C failure with the result of continously turned on LEDs
    • Series supply of all LEDs in a subunit (16 pieces) - needs external supply, additional cabling to the outside, full control over safe turning off the supply


  • 2000 SHV connectors arrived at Bonn, 60 km of SHV cables will be delivered to Bonn in a month

-- ThomasHeld - 17 Jan 2017

Topic revision: r3 - 31 Jan 2017, 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)