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2016/02/05 (Friday)

	Setup: iZIP mode, DIB1/2/3 → cables → 3.2 MHz filters → DCRC55/33/50
	Taking Y-Be photoneutron data overnight. Last flash at 07:26
0905	Remove Y source from source holder and put back into safe.
0910	Tower/MC(H35)/MC sensor/Cold Plate = 31.1/26.9/41/162 mK, Still = 1.32 K / 0.11 mbar, G1/G2 = 160/135 mbar, 1K Pot = 1.68 K / 10 mbar, Main bath = 70.1%
	Tweak 1K Pot needle valve open a few more degrees
0915	Fill LN2 cold trap Dewar.
1207	Start 1 30min background 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 210 ADC bins, with 150 us pileup cut window.
1330	Remove Be discs from source holder. Waiting until cooldown is almost done before putting out strong 88-Y source.
1333	Start 1 30min Strong 88-Y 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 210 ADC bins, with 150 us pileup cut window.
1357	Place strong Y source in holder without Be (right at end of cooldown just before DAQ starts taking data)
1445	Remove Y source from fridge, return to safe.
1445	Put Cf source in shield. Planning to check raw event rate versus Cf position

Raw rate from Cf source
Position	height above det (in)	horiz. dis to det (in)	counts	Rate (Hz)
det level	0	10	58	290
10“ above det lev	10	10	38	190
6” down from shield top	20	10	22	110
shield top	25	10	25	135
top flange of bath	43	10	21	105
source removed	inf	inf	15	75

this implies that Rate[Hz] = 20000/(100+(Height[in])^2)+90 approximately
implies 61% pileup at detector level
can achieve 40% pileup at 14“ above det level = 11” down from top of shield

1545	Fill LN cold trap Dewar
1609	Place Cf source 11“ down from top of shield.
1610	Start 20 30min Cf 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 210 ADC bins, with 150 us pileup cut window.