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2011/12/03

1302 Stopped flashing.
1315 Filled LN2 cold trap.
1500 Begin LHe transfer (34.8%)
1545 End LHe transfer (94.9%)
1729 Start taking data at -4V. Event rate 7.5Hz. I guess DCRC33 triggers too much at threshold 40ADC bin.
1757 At -4V bias. DCRC30 Qi and Qo trigger at 36ADC bin and DCRC33 triggers at 48ADC bin. Event rate is ~25Hz. DCRC33 would flood the DAQ if triggered at 40 ADC bin.
1800 Start taking data 07111203_1800_F0001. -4V on Q1-4. Trigger at (48 36 48 36) ADC bins on Q1-4. Trace length 0.4096ms, lookback time 100us. Data/flash/cooldown = 60/0.1/20 min. Tower temperature 81.7mK.
1807 DAQ looks running fine. Will take -6V, -8V, -10V, -12V, -13V data in the same settings.