ePIC SVT Readout & Powering (WP5) Meeting

Tuesday 9 Dec 2025, 11:00 → 12:00 US/Eastern

Contact James Glover for access to the zoom link for this meeting.

1 General Discussion

Speakers: James Julian Glover (University of Birmingham (UK)), Dr Joachim Schambach (Oak Ridge National Laboratory), Zhenyu Ye (Laurance Berkeley National Laboratory)

FIB

• FIB Connections
• FIB Schematic
• SVT CB-FIB control cable - WithComments.pdf

Update from the UK

• Oxford has sourced an active load. This will be loaned to RAL (where most of the test set-ups are) and is likely to be utilised to push the MPW2 (SLDO) chips to their limits (after initial testing confirming functionality within design specs).
• Schematics of the FIBs has started and interconnection cabling with CBs is starting to be specified.
  • See attached files.
  • Schematics for the CBs should be started soon.
    • Active components are TBD, but I/O and connectors can begin.
• RDO QC documentation drafting has begun.
• Initial grounding scheme considerations are being prepared for the Oxford Workfest (next week).

 

bPOL update

• Problems with the bPOL12V is confirmed to be a design issue.
• Enabling the bPOL12V at power-on prevents it getting into the problematic state.
  • Do not apply power to the bPOL12V while it is disabled!
• Fault lies with the level shifter (matched transistor become mismatched under irradiation, behaviour falls out of tolerance window when cold).
• Well documented in the bPOL12V information meetings.
  • Meeting #5 scheduled for Thurs 11th Dec: https://indico.cern.ch/event/1620336/

2 AOB

Speakers: James Julian Glover (University of Birmingham (UK)), Dr Joachim Schambach (Oak Ridge National Laboratory), Zhenyu Ye (Laurance Berkeley National Laboratory)