2011/12/12
| 1604 | Filled N2 cold trap. Tower temperature started to rise from 14:38. |
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| 1623 | Tower temperature started to drop when the Helium transfer stick was inserted into the transfer port. And 1K pot got less noisier. The temperature change is likely due to thermoacoustic oscillation in the bath. |
| 1625 | Begin LHe transfer (9.3%) |
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| 1717 | End LHe transfer (92.1%) |
| 1907 | Tower temperature kept spiking. Opening helium recovery and 1K pot pump exhaust to air didn't seem to help. Switched to N2 cold trap 2. |
| Cold trap 2 didn't work better. Add 5mW to still heater. Switch back to cold trap 1. | |
| 1913 | Tower temperature kept increasing. Turn off still heater. |
| 1939 | Data taking stopped after 48hours. Flashed for 5min. |
| 2047 | 07111212_2047: -2V Ba-133 data. |
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