HL-LHC BGI - mechanical design update

Friday 27 Jun 2025, 10:30 → 11:00 Europe/Zurich

865/1-B03 (CERN)

Dominique Bodart (CERN), Gunn Khatri (CERN), James Storey (CERN)

Draft:

Present:

Mark, Gunn, James, Chiara, Laurene, Student Stage

Discussion:

• Laurene presented first design of the LHC BGI instrument with 80mm beam pipe and modulated cathode shape
• High voltage feethrough hole too large, can be made smaller by adding ceramic guide
• Big question is chip thermal contact - glue ? Is there acceptance test done by William ?
• Discussion on number of flanges, at the moment there are 4 vacuum seals - anode block, cathode block, HV and chip, can we not reduce the one for chip ? 
• Another concern is that the volume around timepix needs discussion as there is also wire bonding step

1 Discussion in Chiara's office

see the minutes

Speakers: Chiara Pasquino (CERN), Gunn Khatri (CERN), James Storey (CERN), Lauren Karen Margerison, Mark Mclean (CERN), William Andreazza (CERN)