2012/12/09
| 1330 | Filled LN2 cold trap. |
|---|---|
| Fed Cricket 4 pellets. | |
| 1415 | Turn on mixing chamber heater to warm up fridge. |
| Turn on leak checker to warm up. | |
| 1553 | Background rate in hose: 1.2E-9 mbar l/s |
| Leak rate in IVC: 6.5E-8 mbar l/s. | |
| There is a leak, but it's at such a low level that it shouldn't really matter. | |
| 1558 | Pumping out IVC for the time being. |
| 1617 | Begin LHe transfer (31.4%). |
| 1647 | End LHe transfer (90.9%). |
| 2105 | Changed He-4 pump oil. Left it running: sounds healthy. |
| Fed Cricket 4 pellets. |