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2013/07/09

0930 Temperature has decreased and mixture is has been condensing. Lakeshore/MC=30.2K, G1=188mbar, G2=525mbar.
1617 Started helium transfer. Main bath at 17.1%.
1642 Finished helium transfer. Main bath at 47.1%. Helium left in dewar: 6.2L.
1720 V9 closed with G2=349.8mbar. V12A opened all the way (done slowly keeping G1<200mbar.)
1800 G1=152.8mbar and G2=145.7mbar. Given current rate of decrease in G1, it will take roughly 5 hours to bring G1 down low enough to start circulating. Thus I shall leave and (hopefully) return to start circulation. Depends on my ability to safely get back to work. Lakeshore/MC=17.9K.
1920 Fill LN2 cold trap full.
2343 G1=98.9, G2=92.8. Since it took almost 6 hours to get down 50mbar, I imagine it will take at least 2+hours to get down to the recommended 80mbar. Thus I will just wait till morning. We can start circulating as we do our transfer and then starting flashing detectors and taking data immediately.