2011/12/14
| 947 | Filled LN2 cold trap. |
|---|---|
| 1446 | Begin LHe transfer (15.5 %). |
| 1535 | End LHe transfer (92.3%) |
| 2030 | Stop data acquisition. Tower temperature was 188 mK when data acquisition was interrupted. Tower temperature has fluctuated wildly over the last few hours. Pressure in G1 50 mbar, that in G2 70 mbar, indicating that base temperature has risen. Pressures in G1 & G2 have been 40 mbar when at base temperature during this run (which is lower compared with other runs). |
| 2115 | Tower temperature has dropped to 121 mK. Rate of descent has slowed significantly. |
|---|---|
| Start flashing detector. Tower temperature jumps to 560 mK. | |
| 2135 | Stop flashing detector. |
| 2250 | Tower temperature 101 mK. Start data acquisition. Ba-133 data at -4 V bias, first series: 07111214_2248. |