2023/01/27 (Friday)
- Lab in-personnel: Himangshu, Zach
| Status | Run 77 preparation |
|---|---|
| Setup | IVC open. Turbo valved out. tower installation in progress |
| 1107 | Did solder pins on ZC74 to reduce pin connection failures after connecting to stripline. Installed the three SQUETS and heatsinks. |
| 1400 | Begin installing bottom cap to IVC, perform an electrical check halfway and see that Squet ZC31 with the interposer board has some electrical issues. |
| 1445 | When testing the connection directly on the Squet, wiggling certain pins causes the connection to be unstable (seen in feedback A and squid D). Himangshu has a method of remelting the solder holding the pins in without losing the pin. This reseats the pins and fixes any cracks in the solder. |
| 1228 | Electrical check of ZC-31 after connecting to Stripline 41 on Tower Face 5 | ||||
|---|---|---|---|---|---|
| Detector: | S104 | Stripline | 41 | ||
| SC: | none | 300 K 300 K | |||
| Face: | 5 | Date | 1/27/2023 | ||
| SQUET: | ZC-31 | 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 | 4.236 k | OK |
| SQUID bias B/Ret | 19 | 34 | 4.048 k | OK | |
| SQUID bias C/Ret | 8 | 24 | 4.513 k | OK | |
| SQUID bias D/Ret | 23 | 39 | 4.133 | OK | |
| Feedback A/Ret | 37 | 21 | 15 - 25 k | 26.64 k | OK |
| Feedback B/Ret | 2 | 18 | 26.13 k | OK | |
| Feedback C/Ret | 41 | 25 | 28.06 k | OK | |
| Feedback D/Ret | 22 | 6 | 26.83 k | OK | |
| QET A/Ret | 3 | 1, 13, 14, 17, 32 | 60 - 80 | OL,82,OL, OL, OL | OK |
| QET B/Ret | 35 | 29, 33, 47, 48 | 78, 77, OL, OL | OK | |
| QET C/Ret | 7 | 5, 9, 10, 28 | 77, 76, OL, OL | OK | |
| QET D/Ret | 38 | 36, 40, 43, 44 | 72, 72, OL, OL | OK | |
| QET A/QET B | 3 | 35 | 1000-3000 | 574 | |
| QET A/QET C | 3 | 7 | 743 | ||
| QET A/QET D | 3 | 38 | 2120 | ||
| QET B/QET C | 35 | 7 | 495 | ||
| QET B/QET D | 35 | 38 | 1939 | ||
| QET C/QET D | 7 | 38 | 1892 | ||
| LED 1 | chassis | 42 | 1.0 - 1.1 V | 1.105 | |
| LED 2 | chassis | 26 | 1.66 | ||
| 1241 | Electrical check of ZC-26 after connecting to Stripline 43 on Tower Face 2 | ||||
|---|---|---|---|---|---|
| Detector: | S104 | Stripline | 43 | ||
| SC: | none | 300 K 300 K | |||
| Face: | 2 | Date | 1/27/2023 | ||
| SQUET: | ZC-26 | 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 | 4.726 k | OK |
| SQUID bias B/Ret | 19 | 34 | 3.99 k | OK | |
| SQUID bias C/Ret | 8 | 24 | 3.519 k | OK | |
| SQUID bias D/Ret | 23 | 39 | 3.384 k | OK | |
| Feedback A/Ret | 37 | 21 | 15 - 25 k | 1.092 k | OK |
| Feedback B/Ret | 2 | 18 | 16.78 k | OK | |
| Feedback C/Ret | 41 | 25 | 21.23 k | OK | |
| Feedback D/Ret | 22 | 6 | 20.63 k | OK | |
| QET A/Ret | 3 | 1, 13, 14, 17, 32 | 60 - 80 | 158, 119, 111, 112, 120 | OK |
| QET B/Ret | 35 | 29, 33, 47, 48 | 83, 75, 86, 78 | OK | |
| QET C/Ret | 7 | 5, 9, 10, 28 | 72, 70, 58, 67 | OK | |
| QET D/Ret | 38 | 36, 40, 43, 44 | 79, 66, 66, 66 | OK | |
| QET A/QET B | 3 | 35 | 1000-3000 | 826 | |
| QET A/QET C | 3 | 7 | 1660 | ||
| QET A/QET D | 3 | 38 | 1383 | ||
| QET B/QET C | 35 | 7 | 1745 | ||
| QET B/QET D | 35 | 38 | 1611 | ||
| QET C/QET D | 7 | 38 | 2011 | ||
| LED 1 | chassis | 42 | 1.0 - 1.1 V | - | |
| LED 2 | chassis | 26 | - | ||
| 1248 | Electrical check of ZC-74 after connecting to Stripline 48 on Tower Face 3 | ||||
|---|---|---|---|---|---|
| Detector: | S104 | Stripline | 48 | ||
| SC: | none | 300 K 300 K | |||
| Face: | 3 | Date | 1/27/2023 | ||
| SQUET: | ZC-74 | 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 | 4.761 k | OK |
| SQUID bias B/Ret | 19 | 34 | 4.491 k | OK | |
| SQUID bias C/Ret | 8 | 24 | 4.396 k | OK | |
| SQUID bias D/Ret | 23 | 39 | 4.312 k | OK | |
| Feedback A/Ret | 37 | 21 | 15 - 25 k | 21.03 k | OK |
| Feedback B/Ret | 2 | 18 | 19.76 k | OK | |
| Feedback C/Ret | 41 | 25 | 18.49 k | OK | |
| Feedback D/Ret | 22 | 6 | 18.79 k | OK | |
| QET A/Ret | 3 | 1, 13, 14, 17, 32 | 60 - 80 | 77, 65, 58, 59, 68 | OK |
| QET B/Ret | 35 | 29, 33, 47, 48 | 71, 71, 72, 72 | OK | |
| QET C/Ret | 7 | 5, 9, 10, 28 | 55, 64, 54, 68 | OK | |
| QET D/Ret | 38 | 36, 40, 43, 44 | 58, 58, 57, 58 | 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 | ||
| LED 1 | chassis | 42 | 1.0 - 1.1 V | - | |
| LED 2 | chassis | 26 | - | ||
| 1615 | We closed the IVC. Begin gently pumping IVC with Scroll Pump. Initially the turbo pump gauge reads 3.2e2 mbar for few minutes then it started going down. |
|---|---|
| 1621 | Begin tightening the bolts on the bottom of the IVC more. |
| 1624 | We opened the scroll pump all the way at this point. |
| 1630 | The turbo gauge reads 1e-1 mbar so we are switching to turbo pumping now. As we open the turbo valve, we are also slowly closing the scroll pump valve. After the scroll pump valve is completely closed, unplug the scroll pump to stop it. |
| 1714 | Attach fill funnel to outside of IVC. Connect the leak checker to the IVC and wait 20 minutes to get it ready. The leak detector read ~5x10e-10 mbar L/s , then we Open the valve on the leak detector while showly closing the turbo valve, the lead detector settles at 1.04e-8 mbar L/s. |
| Squirt He around bottom IVC joint. No leak detected. Switch back to turbo pumping. |