2011/12/07

1014	Found DAQ error occurred at 23:34 last night. Connection to DCRC30 was reset. Tower temperature 62 mK. Take snapshot of temperature and IGH.

Tower temperature in the last 12 hours

IGH at 10:17

Data taken in the last run

# +4V Ba-133
1.7G    ./07111206_2115
1.7G    ./07111206_2235

4V Ba-133 Data

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.

4V Bias
Fig. 1 - Charge (1000 a.u.) vs. Event Time (sec) at 4V Bias
http://www.hep.umn.edu/cdms/cdms_restricted/K100/runs/run022/Voltage_Biases/4V/20111206/v1_ba/q_et.png

Fig. 2 - Charge Baseline Std vs. Event Time (sec) at 4V Bias
http://www.hep.umn.edu/cdms/cdms_restricted/K100/runs/run022/Voltage_Biases/4V/20111206/v1_ba/qstd_et.png

Fig. 3 - Chi2 vs. Event Time (sec) at 4V Bias
http://www.hep.umn.edu/cdms/cdms_restricted/K100/runs/run022/Voltage_Biases/4V/20111206/v1_ba/qchi_et.png

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

Fig. 5 - Charge Spectra (1000 a.u.) at 4V Bias

1122	07111207_1122_F0001: Flash detector for 6s and cooldown for 20 min. Will continue taking Ba-133 data from +6V after flashing.
1248	Filled LN2 cold trap.
1449	DAQ error occurred at 14:05. Connection to DCRC30 was reset.

1525	The low energy events might be due to depletion of charge after the crystal was long time under bias. Try flashing the detector for a long time and then take data. 07111207_1524: flash detector for 10min and then cooldown for 80min. Take -13V Am-241 data after that.
1531	Tower temperature rose to 555mK while flashing.
1731	DAQ error occurred at 17:01

1820	DAQ error occurred at 18:10

1958	Started flashing from 19:51 and DCRC30 stopped flashing at 19:53