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2012/10/21

0440 Took advantage of a detector flash to fill N2 cold trap full.
0625 Fed Cricket 3 pellets.
1227 Filled LN2 cold trap.
1312 Fed Cricket 3 pellets.
1830 Start LHe transfer (16.9%).
2325 Remove Ba-133 source and place poly-lead shield part that was removed to accommodate the source, back to where it belongs. Start data acquisition. Flash for one hour, followed by cool down for 2 hours. Then take 3 hour-long data series at -/+3 V bias, followed by three 60-minute data series at +/-3 V bias. Flash all LEDs for 6 seconds between data series with usual settings, and wait 20 minutes for cryostat to cool. Finish with a 20 minute flash and 2-hour cool down.
Pulses in test data set look fine.
2335 Fill N2 cold trap full.
Fed Cricket 2 pellets.