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- Lab Update - Run 77
- No pulses again in the last the cooldown (couldn't apply Jack's suggestion to look for Muon peak)
- Took IbIs measurements again to see for any patterns. All channels show similar jumps which is odd.
- Tried connecting only DCRC1 and saw that DCRC4pB channel was responding to qet bias change ⇒ DCRC4 issue, DCRC4pA still didnt respond.
| At BOB with MC close to base temp | |||||||
|---|---|---|---|---|---|---|---|
| SQUET | Cable | DCRC channel | Detector channel | SQUID Bias/ret | Feedback | QET/ret | After Third 10K pumpout |
| ZC-74 | 1 | DCRC1pC | Side1pC | 94 | 20 | 36, 25, 14, 37 | no transition(feedback resistance low) |
| ZC-74 | 1 | DCRC1pD | Side1pF | 90 | 1.19k | 21, 21, 20, 21 | 148 |
| ZC-31 | 2 | DCRC3pA | Side1pE | 117 | 1.2k | open, 40, coil, coil, coil | 135 |
| ZC-31 | 2 | DCRC3pB | Side1pB | 96.9 | 1.21k | 66, 58, coil, coil | 190 |
| ZC-31 | 2 | DCRC3pC | Side1pD | 132 | 1.21k | 56, 33, coil, coil | no transition |
| ZC-26 | 3 | DCRC4pC | Side1pA | 99 | 1.2k | 41, 29, 17, 25 | 320 |
| ZC-74 | 1 | DCRC1pA | Side2pC | 93 | 1.2k | 74, 32, 20, 21, 50 | no transition |
| ZC-74 | 1 | DCRC1pB | Side2pF | 89 | 1.2k | 66, 52, 56, 53 | no transition |
| ZC-31 | 2 | DCRC3pD | Side2pE | 104 | 1.19k | 83, 83, coil, open | no transition |
| ZC-26 | 3 | DCRC4pA | Side2pB | 111 | 1.2k | 170, 119, 109, 109, 132 | no response to change in QETbias |
| ZC-26 | 3 | DCRC4pB | Side2pA | 116 | 1.2k | 85, 60, 55, 47 | no response to change in QETbias |
| ZC-26 | 3 | DCRC4pD | Side2pD | 120 | 1.2k | 26, 26, 25, 25 | no transition |
- Tried moving the source mover Y-arm. Although we donot have pulses, we can check whether the source is at the parking location when we warmup. Took about 45 minutes to cooldown to base in each move. Details
- Still need to test HV supply.
- Followed up with Bruno about DCRC RevE adapter board to connect 100 pins DCRC RevE to our 50-pin Dsub cables. He is going to do some tests in the next couple of weeks and can send the adapter board to UMN in April. He also sent the board design in case we want to make our own.
- Priority Updates
- General Updates
- Himangshu
- Shubham
- Jack
- Derek
- Zach
- Scott
- Giulia
- Fun Update