| | so a 100 keV electron-recoil event has an amplitude of about 414 ADC units in Side1 qInner. |
| | However I'm not sure how this corresponds to threshold setting, since I'm not positive what the trigger logic is |
| | It should be noted that as raw traces, in the -/+ bias polarity, charge pulses are inverted. How does this affect triggering? Do we need to set negative thresholds? |
| 1200 | Using the trace viewing GUI, confirmed that in -/+ bias, all charge channels give inverted pulses; in +/- bias, all charge channels give upright pulses. |
| 1210 | Place Ba source on fridge |
| | We'll take data without the high-energy rejection first for comparison. So for this next series we are turning off the charge triggers, and only triggering on DIB1 pA as usual. |
| 1223 | Start 1 30min Ba series at -4/+4V with FG=5/2/5, OG=3, with 1000 initial randoms, 1000 ending randoms, 30s flash and 25 minute cooldown before series. Trigger on DIB1 phA with threshold of 20ADC bins. |
| | Now we will try high-energy pulse rejection, by setting the DIB1 charge thresholds to 420 ADC units, and setting the pileup cut time to 20 us. |
| 1501 | Start 1 30min Ba series at -4/+4V with FG=5/2/5, OG=3, with 1000 initial randoms, 1000 ending randoms, 30s flash and 25 minute cooldown before series. Trigger on DIB1 phA with threshold of 20ADC bins and DIB1 qInner&qOuter each with threshold 420 ADC bins, with 20 us pileup cut window. |
| 1630 | It appears the high trigger had the desired effect. Lower the high trigger (i.e. DIB1 qInner&qOuter) threshold to 350ADC bins, but leave DIB1 phA with threshold of 20ADC bins, and 20us pileup cut window. |
| 1720 | Fill LN2 cold trap full. |
| 1735 | Place Strong Y source into Be disk sourceholder. |
| 1740 | Start 14 30min Y-Be series at -4/+4V with FG=5/2/5, OG=3, with 1000 initial randoms, 1000 ending randoms, 30s flash and 25 minute cooldown before series. Trigger on DIB1 phA with threshold of 20ADC bins and DIB1 qInner&qOuter each with threshold 350 ADC bins, with 20 us pileup cut window. |
