Thursday, December 6, 2018 11am ET

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Logistic information

 BlueJeans calling instructions:
 Toll-Free Number (U.S.&  Canada):  888-240-2560
 International toll number:         408-740-7256
 Bluejeans CODE:                    734 609 7559
 Bluejeans link: https://bluejeans.com/7346097559

Agenda

1. Prototype testing results (Ernie)
   1. 37 C predicted - 32 C was the result
   2. 10 turn coil 30 C expected in another coil: 1938 A (reading meter off front of supply)
   3. flow meters - tevalin mech. accuracy +/-2% full scale, pressure gauges +/- 1%
   4. IR and gauges gave the same results
      1. 24.1 C at little triangle
      2. you can see the Delta T from inside to outside
      3. stresses across coil - Delta T of 30 C
   5. Left on for ~2 hours
   6. Chiller would climb over time (chiller issue not coil issue)
   7. How much overhead is there - function of the water flow
      1. is there thermal runaway? At what point would it be?
      2. 70 C on coil - never get close to that - depends on inlet temperature
      3. will be interlocked - never get to runaway conditions
      4. what about a failed sensor - coil gets plugged up?
      5. multiple redundant interlocks meters for DeltaT, flow rate, voltage (R changing)
         1. weren't having flow meters on every cooling path
         2. could have a temperature monitor on each
   8. mechanical temp gauges mounted around; very close to the IR gauge
   9. everything referenced to inlet coolant temperature
   10. watch exactly where the conductor goes
   11. How long did it take to reach thermal equilibrium? - 20-30 minutes
   12. Emissivity settings (0.95) - set as well as bandwidth - compare to reference
       1. had a confirmation measurement with the mechanical gauge
   13. 1938 A - long coil - flow 20% low
       1. but DeltaT is smaller
       2. no radiation in Hall in the calculations
       3. still haven't processed everything
       4. 0.7 m^2, 500 W seems low compared to what was seen
   14. coil was not uniform temperature
   15. epoxy temperature - all thermal measurements on epoxy surface
2. Costing the spectrometer
3. Rational for structural support for the coils
4. He vs. air
5. Upcoming meetings

Minutes

Attendance: Ernie, Jim, Jason, Juliette, Roger, Kent, Ruben, Dave, Probir, Sandesh, KK

1. Prototype testing results
2. Costing the spectrometer
3. Rational for structural support for the coils
4. He vs. air
5. Upcoming meetings

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