Proton Calorimetry/Meetings/2022/05/04

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Minutes for UCL Proton Calorimetry Meetings, 4th May

Present

Saad Shaikh, Simon Jolly

Saad Shaikh

  • Provided Simon with dimensions for 48-sheet stack holder to be used with Rev. B boards and CMOS sensor. Stack to contain 25 new clear sheets and 23 white sheets.
    • Can do tests with shooting beam from both sides, to verify white sheets not performing well.
    • Will see if sheets fit into existing holder, after fibre tests.
  • Matt has modified 2 Rev. B boards to fix daisy-chaining issues. Now able to chain 3 boards together.
  • Marko has provided editable schematics for FMC daughter boards. Forwarded this onto Matt.
  • Sanded edges of 4 clear 2.86mm sheets that were too large to fit in stack holder.
    • Some edges of clear sheets have significant machining marks – may need polishing/sanding before beam test.
    • Will look into sanding down injection mould marks on 3mm sheets.
  • Completed lab LED tests with clear sheets.
    • Light levels in each sheet with the same fibre injecting light are reasonably consistent and significant cross-talk observed.
    • Will test with white paper, black card and mylar foil.
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