2023/04/21 (Friday)
- Lab in-personnel: Himangshu, Zach
| Status | Run 78 Preparation. Tower Installation in progress. IVC open. Turbo valved out |
|---|---|
| Put cap on bottom hole of Tower. | |
| 1400 | Check contents of warm LN2 Trap 1: 23.4 mbar (28.9 on G1). Pump it out with the scroll pump. |
| 1405 | G1 = 2.5 mbar and stable, stop pumping on Trap 1 |
| 1406 | Insert LN2 cold trap 1 and begin filling cold trap dewar with LN2 |
| 1415 | Begin cryocleaning mixture through cold trap 1 following the procedure in procedure:cryoclean_mixture |
| 1420 | Open V6 to 12.0% to restart flow |
| 1448 | Open V6 to 12.3% to restart flow |
| 1523 | Open V6 to 12.4% to restart flow |
| 1640 | Completed installing shields for the 100mK Can. Attach Outer first, then inner shield piece. We use medium-sized screws for the heatsinks outer screw-holes, longer screws for inner screwholes of heatsinks and short screws for other screwholes to complete the 100mK shield. |
| 1640 | End cryocleaning mixture through trap 1. Pump mixture to dump |
| 1700 | P1 = 0.09 mbar, G1 = 1.9 mbar and stable. Close all valves and turn off 3He pump, leaving 725.1 mbar in dump |
| 1702 | Remove cold trap 1 from the LN2 bath to warm up overnight |
| 1328 | Electrical check of ZC-70+interposer after connecting to Stripline 41 on Tower Face 5 | ||||
|---|---|---|---|---|---|
| Cooldown checkout sheet (rev C SQUET) | |||||
| Detector: | S104 | Stripline | 41 | ||
| SC: | none | 300 K 300 K | |||
| Face: | 5 | Date | 04/21/2023 | ||
| SQUET: | ZC-70 | Cable | 2 | ||
| Signal | Pos. lead | Gnd lead | Nominal | Actual | Chassis |
| (Gnd lead) | |||||
| Nominal: | |||||
| < 0.1 nS | |||||
| SQUID bias A/Ret | 4 | 20 | 3 - 5 k | — k | OK |
| SQUID bias B/Ret | 19 | 34 | 4.276 k | OK | |
| SQUID bias C/Ret | 8 | 24 | 4.554 k | OK | |
| SQUID bias D/Ret | 23 | 39 | 5.046 k | OK | |
| Feedback A/Ret | 37 | 21 | 15 - 25 k | 29.11 k | OK |
| Feedback B/Ret | 2 | 18 | 25.37 k | OK | |
| Feedback C/Ret | 41 | 25 | 28.10 k | OK | |
| Feedback D/Ret | 22 | 6 | 34.17 k | OK | |
| QET A/Ret | 3 | 1, 13, 14, 17, 32 | 60 - 80 | OL,87.1,OL, OL, OL | OK |
| QET B/Ret | 35 | 29, 33, 47, 48 | 75.3, 75.3, OL, OL | OK | |
| QET C/Ret | 7 | 5, 9, 10, 28 | 83.3, 77.7, OL, OL | OK | |
| QET D/Ret | 38 | 36, 40, 43, 44 | 74.2, 74.9, OL, OL | OK | |
| QET A/QET B | 3 | 35 | 1000-3000 | 917 ohm | |
| QET A/QET C | 3 | 7 | 753 | ||
| QET A/QET D | 3 | 38 | 2154 | ||
| QET B/QET C | 35 | 7 | 5844 | ||
| QET B/QET D | 35 | 38 | 2073 | ||
| QET C/QET D | 7 | 38 | 1915 | ||
| LED 1 | chassis | 42 | 1.0 - 1.1 V | 1.105 | |
| LED 2 | chassis | 26 | 1.69 | ||
| Motor Coil 1 | pBr3 | pBr4 | 7.53 k | ||
| Motor Coil 2 | pCr3 | pCr4 | 7.47 k | ||
| Near Endstop | pAr3 | chassis | 5.714 k | ||
| Far Endstop | pAr4 | chassis | 22.49 k | ||
| Thermometer ROX | pAr1 | pDr4 | 1.133 k | ||
| 1441 | Electrical check of ZC-13 after connecting to Stripline 43 on Tower Face 2 | ||||
|---|---|---|---|---|---|
| Cooldown checkout sheet (rev C SQUET) | |||||
| Detector: | S104 | Stripline | 43 | ||
| SC: | none | 300 K 300 K | |||
| Face: | 2 | Date | 4/21/2023 | ||
| SQUET: | ZC-13 | Cable | 3 | ||
| Signal | Pos. lead | Gnd lead | Nominal | Actual | Chassis |
| (Gnd lead) | |||||
| Nominal: | |||||
| < 0.1 nS | |||||
| SQUID bias A/Ret | 4 | 20 | 3 - 5 k | 4.605 k | OK |
| SQUID bias B/Ret | 19 | 34 | 4.770 k | OK | |
| SQUID bias C/Ret | 8 | 24 | — k | OK | |
| SQUID bias D/Ret | 23 | 39 | 4.884 k | OK | |
| Feedback A/Ret | 37 | 21 | 15 - 25 k | 18.85 k | OK |
| Feedback B/Ret | 2 | 18 | 19.91 k | OK | |
| Feedback C/Ret | 41 | 25 | — k | OK | |
| Feedback D/Ret | 22 | 6 | 20.65 k | OK | |
| QET A/Ret | 3 | 1, 13, 14, 17, 32 | 60 - 80 | 77.2, 72.3, 67.6, 68.7, 77.5 | OK |
| QET B/Ret | 35 | 29, 33, 47, 48 | 70.1, 70.2, 80.4, 70.1 | OK | |
| QET C/Ret | 7 | 5, 9, 10, 28 | 72.2, 71.6, 60.5, 69 | OK | |
| QET D/Ret | 38 | 36, 40, 43, 44 | 71.6, 69.1, 68.1, 68.5 | OK | |
| QET A/QET B | 3 | 35 | 1000-3000 | 790 | |
| QET A/QET C | 3 | 7 | 1669 | ||
| QET A/QET D | 3 | 38 | 1370 | ||
| QET B/QET C | 35 | 7 | 1796 | ||
| QET B/QET D | 35 | 38 | 1644 | ||
| QET C/QET D | 7 | 38 | 2072 | ||
| 1248 | Electrical check of ZC-39 after connecting to Stripline 48 on Tower Face 3 | ||||
|---|---|---|---|---|---|
| Note: This SQUET need to slanted to make QET B working, seems to be affected by the angle between stripline head connector with the SQUET | |||||
| Detector: | S104 | Stripline | 48 | ||
| SC: | none | 300 K 300 K | |||
| Face: | 3 | Date | 4/21/2023 | ||
| SQUET: | ZC-39 | Cable | 1 | ||
| Signal | Pos. lead | Gnd lead | Nominal | Actual | Chassis |
| (Gnd lead) | |||||
| Nominal: | |||||
| < 0.1 nS | |||||
| SQUID bias A/Ret | 4 | 20 | 3 - 5 k | 4.233 k | OK |
| SQUID bias B/Ret | 19 | 34 | 3.956 k | OK | |
| SQUID bias C/Ret | 8 | 24 | — k | OK | |
| SQUID bias D/Ret | 23 | 39 | — k | OK | |
| Feedback A/Ret | 37 | 21 | 15 - 25 k | 24.69 k | OK |
| Feedback B/Ret | 2 | 18 | 23.33 k | OK | |
| Feedback C/Ret | 41 | 25 | 25.5 k | OK | |
| Feedback D/Ret | 22 | 6 | 16.47 k | OK | |
| QET A/Ret | 3 | 1, 13, 14, 17, 32 | 60 - 80 | 87.7, 89, 85, 86, 89 | OK |
| QET B/Ret | 35 | 29, 33, 47, 48 | 64, 64, 65, 65 | OK | |
| QET C/Ret | 7 | 5, 9, 10, 28 | 63, 64, 54, 63 | OK | |
| QET D/Ret | 38 | 36, 40, 43, 44 | 59, 59, 59, 59 | OK | |
| QET A/QET B | 3 | 35 | 1000-3000 | 1735 | |
| QET A/QET C | 3 | 7 | 2535 | ||
| QET A/QET D | 3 | 38 | 2166 | ||
| QET B/QET C | 35 | 7 | 2626 | ||
| QET B/QET D | 35 | 38 | 2243 | ||
| QET C/QET D | 7 | 38 | 1079 | ||
| 1500 | Attach 100 mK shield, heat sinks. |
|---|---|
| 1530 | Attach screw for 600 mK rod. Begin attaching 4K stage. |
| 1400 | Finish attaching 4K stage. |