2010/12/16
| 1404 | Electrical check at 77K. |
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<note> Electrical check results are here </note>
| 1406 | Pump mixture into dump, pump out exchange gas |
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| 1437 | Pumping station connected, IVC He BG 1.5E-9cc/s |
| 1445 | Open V1, gate valve, and condenser line speedivalve to pump the fridge. |
| 1455 | Throughput test: ~30mbar/min. No leak found at BG 3.1E-8cc/s. |
| 1458 | Open V5, v6 to pump mixture into dump |
| 1510 | |
| 1618 | Fill N2 cold trap full |
| 1638 | G3 starts to fall. Liquid N2 is about drained. |
| 1651 | Stop the He gas. No leak found during the blowing out. |
| IGH G3 during the N2 blow out |
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| Leak signal during blowing out |
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| 1659 | Start pumping the bath |
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| 1701 | Leak level jumped up when switching the exchange gas hose from N2 to He |
| G3 when pumping the bath |
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| Leak signal while pumping the bath |
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| 1711 | Fill the bath with He gas. No leak found when filling He gas. |
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| G3 when filling He gas |
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| Leak signal when filling He gas |
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| 1715 | Evacuate and isolate 1K pot |
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| 1718 | Evacuate exchange gas line |
| 1723 | 4.6 mbar He exchange gas in hose → 0.14 mbar in IVC |
| Pump He transfer stick | |
| 1807 | Stop pumping He transfer stick. |
| 1950 | Start to pump out He exchange gas at 6K |
| 1953 | MC temperature hits 4.2 K. Should pump the exchange gas a bit earlier. |
<note important> Pump the He exchange gas at 10K may be better</note>
| 2131 | Pump exchange gas over night |
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