2012/02/18

0940	DAQ error occurred

Data collected in the last run

# -7V Am-241 2 hour long run. Trigger on Q1-4 at 40 ADC bin.
4.2G    ./07120217_2247
# 0V data/flash/cooldown = 120/0.1/20 min
4.9G    ./07120218_0048
# +7V Am-241 2 hour long run. Trigger on Q1-4 at 40 ADC bin.
4.6G    ./07120218_0313
# 0V data/flash/cooldown = 120/0.1/20 min
4.9G    ./07120218_0514
# -10V Am-241 2 hour long run. Trigger on Q1-4 at 40 ADC bin.
4.6G    ./07120218_0739

	There is a temperature peak from 0750 to 0915 up to 106mK from 80mK. Otherwise stable.
1112	Take 0V data 07120218_1112_F0001. Continue the list. T=78mK.
1313	Filled N2 cold trap.
1740	All data in the last list finished.

Data collected in the last run

# 0V data/flash/cooldown = 120/0.1/20 min
4.9G    ./07120218_1112
# +10V Am-241 2 hour long run. Trigger on Q1-4 at 40 ADC bin.
4.6G    ./07120218_1337
# 0V data/flash/cooldown = 120/0.1/20 min
5.0G    ./07120218_1538

1748	Raise fridge temperature to 400mK.
1758	Fridge is at 400mK. Try taking data 1min and flash 0.1min and see how long it takes tool cool to 400mK.
1805	It took 2min to cool down to 400mK.
1847	The event rates are low in the recent data sets. The detector may need to be neutralized. Flash the detector for 2min and see how long it takes to cool down to 400mK.
1911	It took 5min to cool down to 400mK for longer flashing.
1919	Labview crashed.
1940	Start flashing detector with Ba-133 source for 12 hours and then cooldown 10min to 400mK. Then take Ba-133 data at -10, +10, -8, +8, -6, +6, -4, +4, -2, +2V biases on Q1-4. Data/flash/cooldown = 15/0.1/2 min. 4 series at each bias.