ePIC pfRICH electronics mailing list

["Kiselev, Alexander" <ayk AT bnl.gov>]

  Hi Alexey,

  (Cc to the pfRICH electronics list)

  can you please share the models (or sizes) of screws and nuts we are presently planning to use to fix the ASIC boards to HRPPDs, with the colleagues developing these ASIC boards?

  We are particularly interested in screw height and nut dimensions, to see what should be the minimal clearance between the ASIC backplane and FPGA mezzanine board, but also how much space will the nuts take away from the ASIC board footprint. We also better agree on the diameter of the integrated nut washer and / or tool used to tighten them, in order to avoid surprises in the future (like a need to thin down stock tool diameter, which plagued us in one of the previous designs).

  Cheers,

    Alexander.