Table of Contents
2010/07/31
Run diary
| 1037 | Fill N2 cold trap, stop run at 07100731_0111_F0086, put Ba-133 source back to safe, ground detector |
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| Tower temperature in the past 5 hours |
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| Temperature jump is due to detector bias change from 3V to 0V |
| 1744 | Tower temperature: 36.6 mK; still=4.56kΩ; cold plate=17.3kΩ; MC resistor=83.9kΩ; He gas meter:072600; He consumption rate: ~1%/hour, pumping the dewar before the run seem to help a lot. |
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| Tower temperature in the past 5 hours |
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| 10 hour IGH history |
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| IGH at 1750 |
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| ILM at 1750 |
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| 1808 | Warm up the fridge naturally: |
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| Close 1K pot needle valve, close 1K pot speedivalve, stop 1K pot. Switch 1K pot pump exhaust from recovery to exhaust. | |
| Open V9, close V13A, open V5, pump mixture out of the fridge from both ends | |
| 1835 | Close V12A when G1 reaches 0.0 mbar |
Analysis
Cuts used:
% position cut cQin = 0.93 <= Qpart & Qpart <=1.07; cDel = (-50 < Xdel & Xdel <50) & (-50 < Ydel & Ydel <50 ); % fitting quality cut cQchi2 = QSOFchisq(detnum,0) < 9000 + Qsum.^2*0.21; % energy cut cE = 5 < Qsum & Qsum < 100; cPt = Pt > 5; cQsum = Qsum >5;
| Plot | Cut |
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| Qpart logstep | cDel & cPt & cQsum |
| Qsum linstep | cQin & cDel & cQchi2 & Pt |
| (Qsum, QSOFchisq) | cDel & cQin |
| (Qi, Qo) | cDel & cPt |
| (Xdel, Qi) | cDel & cQin & cQchi2 & cPt |
| Pt overall calibration | cDel & cQin & cQchi2 & cQsum & cPt |
| (Pt, Qsum) | cDel & cQin & cQchi2 |
| Phonon relative calibration | No cut |
| (Xdel, Ydel) | cQin & cQchi2 & cE(55<Qsum<65)', 'cQin & cQchi2 & cE & cAmDel' |
| (Xpart, Ypart) | 'cc = cDel & cQin & cQchi2 & cE', 'cc = cc & cAmDel' |
| Yield plot (Pt, Y=Qsum/Pt) | cDel & cQin & cQchi2 |
| Neutralization plot (Time, Y) | cAmDel & cQin & cQchi2 & cE(30<Qsum<90) |
| Neutralization plot (Time, Qsum) | cAmDel & cQin & cQchi2 |
Overnight Ba-133 and Am-241 run 07100731_0111
Approximately 8 hour run to obtain deposited energy spectrum and check background neutron rate from overnight Am-241 run.
