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2023/04/18 (Tuesday)

Previous Day

  • Lab in-personnel: Himangshu, Zach, Ping, Carson
Detector: Type standard
SC: none 300 K
Face: Date 4/18/2023
SQUET: ZC-70 Who QK
Signal Pin1 Pin2 Nominal Actual Chassis
(Gnd lead)
Nominal:
< 0.1 nS
SQUID bias A/Ret 16 3 3 - 5 k – kΩ not ok
SQUID bias B/Ret 27 39 4.226 k ok
SQUID bias C/Ret 19 6 4.501 k ok
SQUID bias D/Ret 30 42 5.003 k ok
Feedback A/Ret 28 41 15 - 25 k 30.14 k ok
Feedback B/Ret 14 1 25.33 k ok
Feedback C/Ret 31 44 28.05 k ok
Feedback D/Ret 17 5 34.12 k ok
QET A/Ret 15 2, 10, 11, 12, 13 48.2 Ω ok
QET B/Ret 26 47, 48, 49, 50 14.2 Ω ok
QET C/Ret 18 11, 4, 7, 8, 9 14.7 Ω ok
QET D/Ret 29 40, 43, 45, 46 26.1 Ω ok
Detector: Type standard
SC: none 300 K
Face: Date 4/18/2023
SQUET: ZC-39 Who QK
Signal Pin1 Pin2 Nominal Actual Chassis
(Gnd lead)
Nominal:
< 0.1 nS
SQUID bias A/Ret 16 3 3 - 5 k 4.183 kΩ ok
SQUID bias B/Ret 27 39 3.919 k ok
SQUID bias C/Ret 19 6 – k not ok
SQUID bias D/Ret 30 42 – k not ok
Feedback A/Ret 28 41 15 - 25 k 24.69 k ok
Feedback B/Ret 14 1 23.33 k ok
Feedback C/Ret 31 44 25.51 k ok
Feedback D/Ret 17 5 16.47 k ok
QET A/Ret 15 2, 10, 11, 12, 13 14.3 Ω ok
QET B/Ret 26 47, 48, 49, 50 13.6 Ω ok
QET C/Ret 18 11, 4, 7, 8, 9 14.6 Ω ok
QET D/Ret 29 40, 43, 45, 46 12.0 Ω ok
Detector: Type flipped
SC: none 300 K
Face: Date 4/18/2023
SQUET: ZC-13 Who QK
Signal Pin1 Pin2 Nominal Actual Chassis
(Gnd lead)
Nominal:
< 0.1 nS
SQUID bias A/Ret 16 3 3 - 5 k 4.537 kΩ ok
SQUID bias B/Ret 27 39 3.919 k ok
SQUID bias C/Ret 19 6 4.688 M (open) ok
SQUID bias D/Ret 30 42 4.830 k ok
Feedback A/Ret 28 41 15 - 25 k 18.79 k ok
Feedback B/Ret 14 1 19.85 k ok
Feedback C/Ret 31 44 – k not ok
Feedback D/Ret 17 5 20.61 k ok
QET A/Ret 15 2, 10, 11, 12, 13 12.0 Ω ok
QET B/Ret 26 47, 48, 49, 50 12.2 Ω ok
QET C/Ret 18 11, 4, 7, 8, 9 13.4 Ω ok
QET D/Ret 29 40, 43, 45, 46 13.2 Ω ok
1419 Pump out line to cold traps with scroll pump.
1420 Check contents of warm LN2 Trap 1, 6.7 mbar. Pump it out with the scroll pump.
1424 Check contents of warm LN2 Trap 2: 3.5 mbar mbar, pump it out with the scroll pump.
Need to pump out 1KPot since we flushed it with helium when taking out the needle valve.
1435 Pump out line to 1K Pot (V4a) with scroll pump.
1440 Close scroll pump valve then open 1KPot speedivalve (22mbar in 1kpot on P2) then open scroll pump valve to pump out 1KPot
1510 Close scroll pump valve and see how high the 1Kpot pressure rises, now at 9.0 mbar on P2
1511 Tighten needle valve a little more and finish pumping out 1KPot
Run 78 Tower Installation pictures

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