Table of Contents
2011/04/08
| 0830 | Temperature looked OK in the past 12 hours. |
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| 0833 | Stop +2V data at 07110408_0735. Load +4V bias into DAQ. |
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| 0844 | Filled N2 cold trap. |
| 0859 | Start to take data 07110408_0859_F0001. Calibrated +4V on Q1-4. Trigger: Q1(30ADC) OR Q2(30ADC) OR Q3(30ADC) OR Q4(30ADC); coincidence time 50us. Trace length 1024, lookback time 100us. DCRC30 on DIB1, ZIP2, master; DCRC33 on DIB2, ZIP1, slave. Auto run enabled, take data 15min, flash 20min, cooldown 40min. Flash settings: DIB2, LED 1&2; DIB1, LED1; LED current 0.6mA, 100us ON, 2500us OFF. Tower T 62.8mK. |
| 1016 | 1K pot started to run down from early morning. Tune it back to ~1.5K |
| 1458 | 1K pot kept running down. There might be a blockage in the pumping line. |
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| 1848 | Stop +4V bias sweep. |
| 2257 | Modified SCDMS_GetTraceData.vi to flip the sign of trace traces. Created +6V bias setting file. Changed trigger settings to 60, 36, 30, 30 ADC bins based on the +1V data. |
| 2259 | Flash detector. |
| 2302 | Filled N2 cold trap. |
| 2309 | Set 1K pot to 1.6K. Hopefully it won't drop too low soon. |
Calibrated +4V bias
Data:
07110408_0859
07110408_1016
07110408_1131
07110408_1247
07110408_1403
07110408_1520
07110408_1635
07110408_1750
The cuts are defined as
- cQ# = max([Q1, Q2, Q3, Q4], [], 2)==#
- cQCchisq = cQ1chisq & cQ2chisq & cQ3chisq & cQ4chisq
- cE1 = 15 < Q1;
- cE2 = 15 < Q2;
- cE3 = 10 < Q3;
- cE4 = 20 < Q4;
- cE = 50 < Qsum.
Comments:
The trigger threshold is too low for this series. Most of the events are noise.
Plots
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