2021/10/22 (Friday)
- Lab in-personnel: Matt, Himangshu, Giovanna
| Status | Run 75 prep. |
|---|---|
| All mixture is in dump. Fridge isolated. 1K Pot isolated. LN2 Trap 2 still has contaminants in it. MB in pit, clean tent erected. Cryostat vacuum jacket (CVJ) pumped out. IVC open. Tower removed. | |
| Assembled Tower yesterday. Started tying down wiring, need to complete that, make sure everything clears the 30mK can. | |
| 1620 | Finish taping down Tower wires. Bent wires downward at pins at DIBs, it should barely clear the 30mK can opening.    |
| 1630 | Temporarily tape Tower thermometer wire to outside of adapter ring.  |
| 1645 | Perform Tower electrical check: |
| Run 75 Tower Electrical Checkout | |||
|---|---|---|---|
| Device | Label | Unit | Value |
| Face5pA | Side1pE | Ω | 336.2 |
| Face5pB | Side1pB | Ω | 140.7 |
| Face5pC | Side1pD | Ω | 416.4 |
| Face5pD | Side2pE | Ω | 321.2 |
| Face5pA-pB | same side inter | kΩ | 1.285 |
| Face5pA-pD | opp side inter | kΩ | 2.619 |
| Face5LED1 | pin-to-chassis | Ω/V | 0.754M/1.068 |
| Face5LED2 | pin-to-chassis | Ω/V | 205k/ 1.043 |
| Face5pA-chassis | nS | 0.1 | |
| Face3pA | Side2pC | Ω | 376.4 |
| Face3pB | Side2pF | Ω | 515.4 |
| Face3pC | Side1pC | Ω | 435 |
| Face3pD | Side1pF | Ω | 500.9 |
| Face3pA-pB | same side inter | kΩ | 1.76 |
| Face3pA-pD | opp side inter | kΩ | 2.68 |
| Face2pA | Side2pB | Ω | 140.7 |
| Face2pB | Side2pA | Ω | 87.1 |
| Face2pC | Side1pA | Ω | 100.9 |
| Face2pD | Side2pD | Ω | 389 |
| Face2pA-pB | same side inter | kΩ | 0.749 |
| Face2pA-pD | | kΩ | 1.299 |
| Face4 1-2 | coil1 | kΩ | 7.65 |
| Face4 3-4 | coil2 | kΩ | 7.47 |
| Face4 6-chassis | near endstop | kΩ | 5.756 |
| Face4 7-chassis | far endstop | kΩ | 22.76 |
| Face4 5-10 | therm+ | Ω | 66.5 |
| Face4 12-13 | therm- | Ω | 66.7 |
| Face4 10-12 | therm | kΩ | 2.102 |
| Face4 1,3,5-chassis | nS | 0.1, 0.1, OL | |
| * this should have been pA-pC | |||
| 1705 | Face4 pin 13 on the tower seems to have a short to chassis. Is this a problem ? |
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