2010/07/25
| 11:00 | Fill N2 cold trap full |
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| 11:30 | Start to pump N2 exchange gas out, IVC initial pressure 0.74 mbar |
| 13:50 | Electrical check at 77K: result. |
| 15:12 | Throughput test: 32.5 mbar/min, no leak from circulation at BG 1.3x10E-9cc/s |
| 15:13 | Open V6, V5 to pump mixture out |
| 15:30 | Start to blow N2 out |
| 16:27 | G3 start to drop, liquid N2 is gone. No leak from main bath ar BG 2x10E-9cc/s |
| Pressure of G3 during N2 blowing out |
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| IGH front panel right after all liquid N2 is out |
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| 17:01 | Pump the main bath |
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| P2 during pumping the bath |
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| 17:10 | Flush main bath with He gas |
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| 17:17 | Evacuate 1K pot line |
| 17:18 | Stop pumping the He transfer stick |
| 17:40 | Start transferring liquid helium |
| 17:51 | Added 8.6 mbar He gas to the NW40 hose, 0.12mbar in IVC |
| 18:43 | Start to pump exchange gas at 15K, needs 10-15min for temperature to plateau. |
| 19:57 | Resume He transferring and continue pumping exchange gas. He signal 3.7x10E-6cc/s with pumping station connected |
| 21:57 | He signal when pumping station disconnected 1.1x10E-5cc/s. Need 3 hour pumping |