2012/05/21
| 1050 | Filled LN2 cold trap. |
|---|---|
| 1219 | Data taking complete. Put Ba-133 source back in safe. |
| 1315 | Start flashing detector. |
| 1341 | Begin Liquid He Transfer, 6.9% |
| 1432 | End LHe transfer (91.4%) |
| 1815 | Stopped flashing detector. |
| 2110 | Fridge cooled down very slowly. Rather worrying. Reduced pressure in main bath which seemed to help. Not sure how it will behave during overnight run. Tower temperature 87 mK. |
| 2210 | Start taking data: 07120521_2209 (4 data series each: DIB1 +12 V, DIB2 -12 V; +/-10 V; +/-8 V). |