2016/07/30 (Saturday)
| Setup: iZIP mode, DIB1/2/3 → cables → 3.2 MHz filters → DCRC55(1)/33(2)/50(3), Tower has been cooled below Al transition with mu-metal shield at standard position | |
| DCRCs were powered down yesterday evening due to large ~100mK temperature fluctuations | |
| 1020 | Tower/MC/Coldplate = 31.8/X/Y mK, Still = Z K / 0.065 mbar, G1/G2 = 187.3/173.3 mbar, 1K Pot = 1.54 K / 6.0 mbar, MB = 64.6% came in and the Tower temp seemed to have been stable for a couple of hours but coming off what seemed to be another upswing overnight, up as high as at least 720 mK. |
| 1029 | Turned DCRCs on, no noticeable temperature rise yet |
| 1120 | The MC thermometer is 25.5 mK, coldplate is 180 mK |
| 1205 | The DCRCs actually were not plugged into the fridge bulkhead, we plugged them in and the temperature is spiking beyond 50 mK |
| 1419 | Switched over to “fast” on the LHe level meter, MB level at 56.1% Boiloff rate is high. I think pressure was let out twice after yesterday's fill but only mentioned once in run diary, 6 minutes after - not sure when the second release was done. |
Notes on DAQ issues:
- The DAQ computer cdms2 is not accessible, IT has been informed. Anthony switched DAQ operation back to the local machine jiajin
- There was strong noise on DIB2 qInner