2015/09/24 (Thursday)

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	Current setup: iZIP mode, DIB1/2/3 → cables → 3.2 MHz filters → DCRC55/33/50.
	Overnight: Cf activation. Tower temperature stable.
0855	Fill LN cold trap Dewar
0902	Tower/MC(H35)/MC sensor/Cold Plate = 30.9/25.3/41.3/159 mK, Still = 1.38 K / 0.080 mbar, G1/G2 = 150 mbar, 1K Pot = 1.72 K / 24 mbar, Main bath = 34.8%
0905	Remove Cf source from fridge
0915	~270 Hz sinusoidal noise seen in all phonons. Intermittent, usually not present but every few 10s of seconds it reappears to a maximum amplitude of maybe 3× the white noise (~20 mVpp)
1040	Modify LabVIEW DAQ to only wait on copying data for up to 5 minutes.
1103	Set up MultiDAQ to take 100 randoms at 0V with 6.5536ms trace length to test alternative trace lengths for processing. Start data.
	Rate low (~5Hz) and it also looks like it's triggering? So there's that…
1106	Set MultiDAQ to take 100 randoms at 0V with 50ms trace length.
1108	Start Data. Rate at ~1Hz and it seems like timing link might be down?
1135	Reset timing link just in case.
1201	No obvious noise frequencies.
1204	Take 20ms traces of properly biased QETs. 0V Qbias. 1000 randoms. Rate ~1.5Hz.
1218	Stop data. Set all QET biases to 0. Set to trigger on Qo=3 ADC bins in addition to phonon channels in hopes that the weird triggering we think we see in the randoms doesn't happen.
1231	Start 1000 randoms of superconducting traces of 20ms. ~1.1Hz event rate. Rate drops to ~0.2Hz. Disable triggering on Qo, rate bounces back to ~1.2Hz.
1254	Stop data. Set QET biases to 400uA across the boards.
1305	Start 1000 randoms of normal resistance data. Rate= ~1.2Hz.
1334	Stuck triggering, lower thresholds to 25 on DIB1. Change DIB1 pA threshold to 16ADC bins & then it begins triggering again. Rate= ~1.3Hz.
1348	Stop data.
1411	Revert to transition QET biases. Stack DCRC boards and take 1000 randoms of 20ms traces.
1415	Start Data. Rate= ~1.2Hz.
1439	Stop data. Unpower boards to remove filters.
1458	Repower boards. Zap SQUIDs using MIDAS.
1511	Zapping with MIDAS appears to work fine, except that it applies a -/+4V Qbias to the crystal. We'll need to address that.
	Have to adjust Driver Offsets because of filters:

	A	B	C	D
DIB1	0.110	0.024	0.010	0.030
DIB2	0.024	-0.026	-0.042	0.014
DIB3	-0.114	0.110	0.010	-0.032

	There's some serious noise happening on DIB3 especially. ~500Hz and ~10mVpp.
1545	Commence LHe transfer (21.7%).
1655	End LHe transfer (91.4%).
1702	Start long trace unfiltered data series (1000 randoms, 0V Qbias, 20ms trace length, transition QET biases).
1720	Stop data series. Zero QET biases. Adjust Driver Offsets accordingly.
1728	Start 1000 randoms of unfiltered long trace data at superconducting QET biases.
	DIB2 phB was railed, but a relock fixed it very quickly without affecting too much of the data series.
1752	Start data of 20ms traces at 400uA QET bias.
1805	Fill LN2 cold trap full.
1845	Flash detector for 30s. Place Cf source underneath shield near detector for overnight activation.

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