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2011/12/09

1430 Filled LN2 cold trap.
1530 Believed to be a blockage in He cold traps. Pulled out He cold traps (G1 jumped to 22 mbar), pumped on them, and began heating with heat gun.
1740 Finished heating cold traps. Inserted them back in. Begin pumping on 1K pot again.
1820 Begin circulation.
1856 G1 ~50 mbar; G2 ~ 46 mbar.
1924 G1 ~45 mbar; G2 ~ 41 mbar.
1928 MC temp ~ 68.8mK
1957 Temperature become stable after cleaning the helium cold trap. Power up DCRCs.
2009 07111209_2009: Take -10V Ba-133 data for 12 hours without flashing. Flash for 1 hour after data.