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(login atlas/atlas)

Interlock 

•  Overheating = the chiller fails and the PS keep running
  • temperature on the cold plate
•  Condensation = Dry air fails, moisture condense and destroys the device
  • dew point < temperature on the module
• module temperature drop ←55C
• communication => fail safe 

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• Cooling unit interlock:
  conditions and action:

  • module too cold: T (module) < -45 C and T(coldplate) > -45 C : turn off peltier and turn off module

  • module too hot: T (module)> 35 C : turn off module and peltier (?)

  • condensation:

  1. T (module) < dew points: turn off peltier and turn off module

  2. flow of dry air < 1.5 L/min (? number need to be tested): check dry air connection

  • vacuum status: alarm

  1. pressure gauge (threshold) : check vacuum status or piping

  2. T(module)-T(vacuum chuck)>threshold (need to test if the module and vacuum chuck not connect well what is the number) : check vacuum status or piping

  • peltier properly setup: 

    1. T(vacuum chuck) > T(chiller): turn off module and peltier

  • chiller status: alarm

    1. (need to consider about leakage of coolant or some problem related to chiller) T (coldplate) -T(chiller set) > threshold (need to check)

Chiller

There are two ThermoCube units in B84/TID cabinet. Unit #1 is with full tubing setup and regularly used by Gabriel Blaj for LCLS so that we are trying to use unit #2 (no tubing) by assembling similar tubing arrangement as unit #1. Unit #2 has different coolant connectors compared to unit #1, but the rest of the tubing can work the same way still. 

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