| 0945 | Filled LN2 cold trap. |
| 1105 | Begin LHe transfer (1.0%) |
| 1130 | Started flashing detector. |
| 1230 | Completed LHe transfer (96.2%). |
| 1955 | Stop flashing detector. |
| 2210 | Mixing chamber temperature 68.4 mK. Start data acquisition: 16 series at +/-2.5 V bias, followed by 16 series at -/+2.5 V bias; Am-241 & Pb-210 sources; trigger on Qi channels (DIB 1 trigger threshold increased to 34 ADC bins due to noisy baseline, DIB 2 trigger threshold remains unchanged at 28 ADC bins); 10/0.1/20 mins acquisition/flash/cooldown. |
| +/- 4V |
| total exposure time: 240 minutes |
| OR trigger on Qi channels (32/28 ADC bins for Dib 1/2) |
Am_241 and Pb_210 sources installed on side 2.
CUT DEFINITIONS:
thresh cut, Qsum > 0.00025 au where Qsum = Qi + Qo
Q_partition cut, .9 < Q_partition < 1.01
Chi_2, visual cut
| Fig. 1: Q_partition histograms for side 1 and side 2, after tresh cut. |
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| Fig. 2: Chi_2 histograms for side 1 and side 2, after thresh and Q_partition cuts. |
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| Fig. 3: Qsum histogram, side 1, after thresh, Q_partition, and Chi_2 cuts. |
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| Fig. 4: Qsum histogram, side 2, after thresh, Q_partition, and Chi_2 cuts. |
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| Fig. 5: Qsum 1 vs. Qsum2 histograms |
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TOP LEFT PANEL: Qsum1 vs Qsum2, NO CUTS
TOP RIGHT PANEL: Qsum1 vs Qsum2, thresh cuts on both sides
BOTTOM LEFT PANEL: Qsum1 vs Qsum2, thresh and Q_partition cuts on both sides
BOTTOM RIGHT PANEL: Qsum1 vs Qsum2, thresh, Q_partition and Chi_2 cuts on both sides
| -/+ 4V |
| total exposure time: 240 minutes |
| OR trigger on Qi channels (32/28 ADC bins for Dib 1/2) |
Am_241 and Pb_210 sources installed on side 2.
CUT DEFINITIONS:
thresh cut, Qsum > 0.00025 au where Qsum = Qi + Qo
Q_partition cut, .9 < Q_partition < 1.01
Chi_2, visual cut
| Fig. 1: Q_partition histograms for side 1 and side 2, after tresh cut. |
 |
| Fig. 2: Chi_2 histograms for side 1 and side 2, after thresh and Q_partition cuts. |
 |
| Fig. 3: Qsum histogram, side 1, after thresh, Q_partition, and Chi_2 cuts. |
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| Fig. 4: Qsum histogram, side 2, after thresh, Q_partition, and Chi_2 cuts. |
 |
| Fig. 5: Qsum 1 vs. Qsum2 histograms |
 |
TOP LEFT PANEL: Qsum1 vs Qsum2, NO CUTS
TOP RIGHT PANEL: Qsum1 vs Qsum2, thresh cuts on both sides
BOTTOM LEFT PANEL: Qsum1 vs Qsum2, thresh and Q_partition cuts on both sides
BOTTOM RIGHT PANEL: Qsum1 vs Qsum2, thresh, Q_partition and Chi_2 cuts on both sides