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2012/10/29

0420 Pressures in G1 & G2 are 68 mbar & 58 mbar respectively. This would seem to indicate a blockage in the helium cold trap. Mixing chamber temperature is holding steady at around 59-60 mK. Helium cold trap will need to be cleaned, but hopefully this can wait until we finish taking IbIs curves.
Fill N2 cold trap full. Probably a good idea to keep it topped up regularly to prevent blockage in helium cold trap becoming larger.
1010 Fed Cricket 3 pellets.
1015 Filled LN2 cold trap.
1700 Began LHe transfer (26.8%).
1740 Stop helium transfer. Helium liquid level 89.8%.
2355 Phonon pulses from DIB 2 look pretty noisy. Timing link does not appear to be the problem. Qi baseline also appears to be a littl wavy. Give SQUIDs two quick zaps and see what happens.