2010/08/11
Run diary
| 0935 | Stop pumping the dewar at 7.4E-5 mbar |
|---|---|
| 1301 | Put on SQUET card, electrical check at RT |
| Cooldown checkout sheet (rev C SQUET) | ||||||||
|---|---|---|---|---|---|---|---|---|
| Detector: | G41 | BH: | ||||||
| SC: | 1 | RT | LN | |||||
| Face: | 5 | Date | 2010-08-11 | Date | 2010-08-12 | |||
| SQUET: | ZC15 | Who | HC & JZ | Who | JZ | |||
| Signal | Pos. lead | Gnd lead | Nominal | Actual | Chassis | Nominal | Actual | Chassis |
| (Gnd lead) | (Gnd lead) | |||||||
| Nominal: | Nominal: | |||||||
| < 0.1 nS | < 0.1 nS | |||||||
| Phonon | ||||||||
| SQUID bias A/Ret | 4 | 20 | 3 - 5 k | 5 | OK | 1 - 2 k | 2 | OK |
| SQUID bias B/Ret | 19 | 34 | 4.6 | OK | 1.7 | OK | ||
| SQUID bias C/Ret | 8 | 24 | 4.2 | OK | 1.5 | OK | ||
| SQUID bias D/Ret | 23 | 39 | 4.1 | OK | 1.5 | OK | ||
| Feedback A/Ret | 37 | 21 | 15 - 25 k | 21 | OK | 9 - 13 k | 8.4 | OK |
| Feedback B/Ret | 2 | 18 | 19 | OK | 7.4 | OK | ||
| Feedback C/Ret | 41 | 25 | 18 | OK | 7 | OK | ||
| Feedback D/Ret | 22 | 6 | 17 | OK | 6.8 | OK | ||
| QET A/Ret | 3 | 1, 13, 14, 17, 32 | 60 - 80 | 88,74,71,71,71 | OK | 30 - 40 | 53,39,36,37,36 | OK |
| QET B/Ret | 35 | 29, 33, 47, 48 | 72,71,75,72 | OK | 37,37,40,37 | OK | ||
| QET C/Ret | 7 | 5, 9, 10, 28 | 70,68,61,68 | OK | 36,34,27,34 | OK | ||
| QET D/Ret | 38 | 36, 40, 43, 44 | 70,69,69,69 | OK | 36,36,35,36 | OK | ||
| Charge | ||||||||
| FET heater +/- | 45 | 46 | 1.0 - 1.1 k | 1.064 | OK | 1.0 - 1.1 k | 1.053 | OK |
| Qi bias/QET Ret | 15 | 24 - 26 nS | 38M | OK | < 1 nS | OK | OK | |
| Qo bias/QET Ret | 11 | 38M | OK | OK | OK | |||
| Qi feedback/Drain/Source | 50 | 16, 31 | 15 - 17 nS | 43M, 43M | OK | 6 - 8 nS | 49M, 49M | OK |
| Qo feedback/Drain/Source | 30 | 12, 27 | 43M, 43M | OK | 48M, 48M | OK | ||
| Qi drain | 16 | chassis | < 0.1 nS | – | OK | < 0.1 nS | – | OK |
| Qo drain | 12 | chassis | – | OK | – | OK | ||
| Qi source | 31 | chassis | – | OK | – | OK | ||
| Qo source | 27 | chassis | – | OK | – | OK | ||
| FET Tsense +/FET heater- | 49 | 46 | 0.6 - 0.7 V | 0.709 | OK | 0.9 - 1.0 V | 1.082 | OK |
| LED 1 | 42 | chassis | 1.0 - 1.1 V | 1.133 | – | 1.2 - 1.5 V | 1.414 | – |
| LED 2 | 26 | chassis | 1.125 | – | 1.405 | – | ||
| Found at least 1 hole at the 100mK can flange, two holes on the 4K tower face stripped. | |
| 1446 | Start pumping IVC |
| 1552 | IVC pressure: 8.6E-2 mbar |
| 1853 | Fill N2 cold trap full |
| 1919 | Cryoclean mixture, evacuate he gas supply line, pump the main bath |
| 1929 | Fill main bath with He gas, no gross leak found at BG 1.4E-6 while pumping station is connected. |
| 1933 | Evacuate and isolate 1K pot |
| 1938 | start transferring liquid N2, close IVC, put in IVC 0.4 mbar N2 exchange gas (3.4 mbar in NW40 hose) |
| 2229 | Stop liquid N2 transfer, put on ping pong ball |