2020/03/03 (Super Tuesday)

Setup	Run 72. DIB 1/3/4 → Stripline 43/41/48 → Cable 3/2/1 → nothing/nothing/accessory_interposer → HV_Conn 1/3/2 → HV 1/2 → DCRCX(4)/DCRC55(1). DCRCs on overnight. Lead/poly shield erected (4 lead walls, 2 poly walls).
	Overnight: Tower temperature rose after filling the LN2 cold trap bath, 53.8→56.4 mK. Then cooled steadily overnight.
0925	Tower/MC/Coldplate = 50.9/33.1/192 mK, Still = 1.49±0.05 K / 0.190 mbar / 5 mW, G1/G2= 502/480 mbar, 1K Pot = 2.19 K / 26 mbar. MB = 30.3%
0930	Fill LN2 cold trap bath
1025	Like yesterday, filling the LN2 cold trap bath seems to have raised the Tower temperature, 51→55 mK. Still pressure not noticeable affected, Circulation pressures dipped then returned as usual.
1025	Tower/MC/Coldplate = 55.0/38.1/194 mK, Still = 1.55±0.15 K / 0.190 mbar / 5 mW, G1/G2= 499/476 mbar, 1K Pot = 2.19 K / 26 mbar.
	so Tower and MC each have risen about 5 mK, Coldplate rose a little, circulation pressures slightly lower. Surprisingly Still seems a little warmer, I thought that the reason we were getting warming at the Tower was that the still was cooling and therefore reducing the He3 flow.
1352	Start LHe transfer @ MB = 23.0%
1429	End LHe transfer @ MB = 90.4%

Some analysis conclusions from yesterday's data:

As expected the peaks are much easier to identify with the shield erected.
Looks like we got the drift rate just right, peaks are constant with time.
Noise width is improved, surprisingly. Now it looks around what we got in Run 70:
- 34 eV for PTOF (at 250V). This is pre-balancing
I had noticed that some channels needed extreme balancing. In this data I found out why:
- the OF time window seemed OK for pF and pT but for the other channels most OFdelays are railed at the high edge
- I changed the config file from phonon OF time max of 25e-6 to 65e-6 (seconds after trigger) and reprocessed
- After reprocessing the balancing factors are more reasonable (2 to 15 before, 1 to 3 after)
- Balanced psum gives less sharp peaks and poorer noise width
- Balanced psum with pB and pD removed (so only pA, pC, pF) gives much sharper peaks. But noise width is slightly worse than pT.
If we apply a high-pF-fraction cut, PTOF noise width falls nearly by half, to 17 eV

1725	Fill LN2 cold trap bath
	Use HVscan.py to generate a sequence HVdrift_200V_31mVps_pre10-2_105min.msl. This should bias detector to 200 V after a 2 minute 10% prebias, then drift by 31 mV/s and run for 105 minutes (ending at about 395V). Then flashes 30 seconds and waits 30 minutes.
1737	Start a series at HV = 200→395V, rate 31mV/s, 105 minutes, with 10% prebias for 2 minutes, flash at end with 30 min wait. CDMS detector: Driver Gains = 1x, DCRC4/1 QET biases = (na/360/430)/(360/420/440) uA, Front-End Gains = (na/3/3)/(5/5/5) 1000 BOR and 5Hz in-run randoms, trigger on DCRC1pD threshold = 9 Use sequence HVdrift_200V_31mVps_pre10-2_1005min.msl
1740	Tower = 54.7 mK. Rising a bit after the LN2 fill.
1747	Data starts
	Vtest rose steadily from 2.8→5.2 mV during voltage drift.
	113 dumps. Pulses look good through entire series.