wiki:TofMeeting1Jun2020

Version 7 (modified by Michael, 3 years ago) (diff)

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Status of all the boards, and qty working or expected to be working for each:

  • 3 working LV Mixer RevA boards
  • 3 working preamp RevA boards
  • 1 working adapter board RevA board, 1 working adapter board RevB board, 1 should work after small surgery adapter board RevB
  • 1 working HV RevA board, 1 working HV RevB board, 1 not working HV RevB board problem not identified
  • 2 working filament supply RevB boards, 1 working filament supply RevA

What work would need to be done in the EDF:

  • small surgery on adapter board mentioned above
  • set boards in enclosures, For filament supply this also means setting up high current BJT on heat spreader
  • try to salvage HV RevB board mentioned above
  • make molex connectors mentioned below

Power supplies we expect our Chinese colleagues to provide:

  • +5V fixed supply up to X Amps for inside ToF box
  • -6V fixed supply up to X Amps for inside ToF box
  • adjustable up to ~2V supply up to X Amps for LV Mixer
  • HV supply up to 200V
  • If the HV supply is adjustable and stable at 20V then no need for a LV supply, if not then an additional supply will be needed for the LV box adjustable up to 20V

Cabling we expect our Chinese colleagues to provide:

  • DB9 cable connecting preamp to ToF box
  • DB15 cable connecting ToF box to LV or HV box
  • BNC connecting HV/LV to filament supply
  • BNC to power supply for ~2v into supply for LV Mixer mentioned above
  • BNC into preamp
  • 2 BNC from filament supply to filament
  • for fixed +5V, -6V, and HV/LV supplies into the ToF box I will make molex plugs with leads they can connect to how they see fit

Pricing for the enclosures (you did provide this for the FP express already):

EnclosurePrice($USD)
LV135.54
HV135.87
preamp118.92
filament164.53
ToF127.97 + cuts
Total682.83 + cuts

Rough estimate of additional work and cost to get from where we are to 4 sets of working electronics (installed + spare in China, ditto for here):

  • 1 more preamp revA board needed ($120 run of 3 at oshpark), 1 set of parts $35
  • 1 more LV Mixer revA board needed ($200 run of 3 at oshpark), 1 set of parts $70

How creative do we want to be? I know the quick board modifications to translate a RevA into a RevB if we want to avoid ordering another run of the following boards

  • 1 Set of parts for Filament supply $100
  • 1 or 2 sets of parts for HV board ~$90 per set, will take detailed inventory of what I have tonight
  • 1 or 2 sets of parts for adapter board ~$60 per set will take detailed inventory of what I have tonight. I need to double check but if ElBat? lab can supply 3.3V then RevA will still work for adapter. If not, will have to order more RevB boards

For work I can get all boards assembled, modified and tested in a single week if I'm working in the EDF and don't hit any major roadblocks.

  • How do we want to fit our boards into enclosures at ElBat? lab?

adding everything up above, $700 to $1000 rough estimate