2011/12/08

-13V Am-241 Data - Long flashing (10 hrs)

All figures below show order for individual charges: Top row- Q1, Q2; Bottom row- Q3, Q4

Cut applied to the following analyses: Primary charge channel cut

No strict Chi2 cut was applied to spectra - only simple threshold cuts

For brevity on this page, I supplied links to charge, chi2, and charge baseline stdv. vs event time.

-13V Bias
Fig. 1 - Charge (1000 a.u.) vs. Event Time (sec) at -13V Bias
http://www.hep.umn.edu/cdms/cdms_restricted/K100/runs/run022/Voltage_Biases/n13V/20111208/v3_am/q_et.png

Fig. 2 - Charge Baseline Std vs. Event Time (sec) at -13V Bias
http://www.hep.umn.edu/cdms/cdms_restricted/K100/runs/run022/Voltage_Biases/n13V/20111208/v3_am/qstd_et.png

Fig. 3 - Chi2 vs. Event Time (sec) at -13V Bias
http://www.hep.umn.edu/cdms/cdms_restricted/K100/runs/run022/Voltage_Biases/n13V/20111208/v3_am/qchi_et.png

Fig. 4 - Chi2 vs. Charge (1000 a.u.) at -13V Bias

Fig. 5 - Charge Spectra (1000 a.u.) at -13V Bias

1000	Filled LN2 cold trap.
1010	DAQ error occurred last night during flashing. It seems the connection to DCRC30 was reset at 03:52.

IGH at 10:12

1017	See pulses when triggering at 40ADC bin. Looks the crystal is recovered.
1021	0V test run 07111208_1020 looks OK on screen.
1023	Start taking 07111208_1023_F0001. Am-241 data at -13V triggering at 40ADC bin. Data/flash/cooldown = 60/0.1/20 min. Tower temperature 61.4mK.
1326	DAQ error occurred at 12:56. Connection to DCRC30 was reset.

1503	Unplugged two boards to let them cool for a while.
1617	Power up both boards.
1619	07111208_1619: flash detector for 6s and then cool down for 20min. Take Ba-133 data at -13V after flashing.
1743	Data not taken because of an error. Flash detector for 0.2min.
1810	Begin LHe transfer (~24%).
1843	End LHe transfer (~92%).
2015	Filled N2 cold trap.
2111	Temperature kept rising and fluctuating since 19:00. G1 and G2 kept rising too. There might be a blockage in the helium cold trap.