UMN CDMS Wiki archive
start › cdms › k100 › run_diary › 20140502

2014/05/02

0030 Fill N2 cold trap full.
1115 Fill LN2 cold trap full.
Calculated QET Bias Settings @ ~75mK [uA]
DIB 1 DIB 2 DIB 3
PA -53.61 -48.57 19.26
PB -64.76 -55.61 48.43
PC -52.45 -57.60 24.75
PD -35.56 -31.97 72.83
Phonon Thresholds
DIB 1 DIB 2 DIB 3
PA 25 25 12
PB 25 25 8
PC 25 50 8
PD 25 17 25
1605 Commence taking data at various QET Bias settings. Flash detector for 1 minute followed by 30 minute cooldown and data acquisition. Charge bias set to 0V for all three DIBs. Each data set will consist of 5-minute data series, interspersed by 6 seconds of flashing and 20 minutes of cooldown. 3.2768 ms trace length; 400 us delay; 200 uS coincidence time; 500 events per file. Data acquired with phonon OR trigger thresholds set at the above values. Data acquired with the following QET Bias settings:
QET Bias for all channels set to 0uA.
QET Bias set to the above values.
QET Bias set to magnitude of 10uA higher than above values.
QET Bias set to magnitude of 200uA.
QET Bias set to the above values, and polarity set to Inverting rather than Non-Inverting.
1855 Commence LHe transfer (20.8%).
1920 Finish LHe transfer (94.8%).