2011/06/07

1210	Stop pumping out nitrogen cold traps.
	Start pumping out mixing chamber lines. Switch on He-3 pump and open valve 9 to dump.
1225	Fill N2 cold trap full and place nitrogen cold traps back in their bath.
1430	Tower assembled: 1 hour on clean bench. Stored in purge cabinet.

Tower Level Continuity Check

1630	Tower removed from purge cabinet. Adapter plate fitted. Perform tower level continuity checks.

+ve lead	-ve lead	signal	measured
Detector	G102	DIB	1
side coax	ZB1-1-9	date/who:	2011-06-07	HC, MF & AK
face	2
3	4	QET B	129 Ω
9	chassis	LED1 Rforward	780 kΩ
10	chassis	LED2 Rforward	760 kΩ
chassis	9	LED1 Rreverse	<0.6 nS
chassis	10	LED2 Rreverse	<2 nS
1	11	Qo Rbias	26 nS
12	11	Qo C coupling	<0.3 nS
12	13	Qo Rfeedback	26 nS
1	14	Qi Rbias	26 nS
15	14	Qi C coupling	<0.5 nS
15	16	Qi Rfeedback	26 nS

+ve lead	-ve lead	signal	measured
Detector	G102	DIB	2
side coax	ZB1-1-6	date/who:	2011-06-07	HC, MF & AK
face	5
5	6	QET C	347 Ω
7	8	QET D	1.45 kΩ
9	chassis	LED1 Rforward	770 kΩ
10	chassis	LED2 Rforward	760 kΩ
chassis	9	LED1 Rreverse	<1 nS
chassis	10	LED2 Rreverse	<2 nS
1	11	Qo Rbias	26 nS
12	11	Qo C coupling	<0.1 nS
12	13	Qo Rfeedback	26 nS
1	14	Qi Rbias	26 nS
15	14	Qi C coupling	<0.3 nS
15	16	Qi Rfeedback	26 nS

1700	Tower bagged and taken to mini-clean room.
1830	Begin installation in K100.

Signal	Pos. lead	Gnd lead	Nominal	Actual	Chassis
Detector:	G42 DIB1		BH:
SC:	ZB1-1-9		300 K
Face:	2		Date	2011-06-07
SQUET:	ZC23		Who	HC & JZ
					(Gnd lead)
					Nominal:
					< 0.1 nS

SQUID bias A/Ret	4	20	3 - 5 k	4.4	OK
SQUID bias B/Ret	19	34		5	OK
SQUID bias C/Ret	8	24		4.6	OK
SQUID bias D/Ret	23	39		4.3	OK

Feedback A/Ret	37	21	15 - 25 k	18	OK
Feedback B/Ret	2	18		20	OK
Feedback C/Ret	41	25		19	OK
Feedback D/Ret	22	6		18	OK

QET A/Ret	3	1, 13, 14, 17, 32	60 - 80	84,86,84,85,86	OK
QET B/Ret	35	29, 33, 47, 48		85,85,88,85	OK
QET C/Ret	7	5, 9, 10, 28		85,85,74,84	OK
QET D/Ret	38	36, 40, 43, 44		84,83,83,84	OK


FET heater +/-	45	46	1.0 - 1.1 k	1.068	OK

Qi bias/QET Ret	15		24 - 26 nS	open (A,C,D) 38MOhm (B)	OK
Qo bias/QET Ret	11			open (A,C,D) 39MOhm (B)	OK

Qi feedback/Drain/Source	50	16, 31	15 - 17 nS	44 MOhm, 44 MOhm	OK
Qo feedback/Drain/Source	30	12, 27		44 MOhm, 44 MOhm	OK

Qi drain	16	chassis	< 0.1 nS	–	OK
Qo drain	12	chassis		–	OK
Qi source	31	chassis		–	OK
Qo source	27	chassis		–	OK

FET Tsense +/FET heater-	49	46	0.6 - 0.7 V	0.724	OK
LED 1	42	chassis	1.0 - 1.1 V	1.14	–
LED 2	26	chassis		1.129	–

Signal	Pos. lead	Gnd lead	Nominal	Actual	Chassis
Detector:	G42 DIB2		BH:
SC:	ZB1-1-6		300 K
Face:	5		Date	2011-06-07
SQUET:	ZC70		Who	HC & JZ
					(Gnd lead)
					Nominal:
					< 0.1 nS

SQUID bias A/Ret	4	20	3 - 5 k	4.8	OK
SQUID bias B/Ret	19	34		4.4	OK
SQUID bias C/Ret	8	24		4.6	OK
SQUID bias D/Ret	23	39		5.2	OK

Feedback A/Ret	37	21	15 - 25 k	29	OK
Feedback B/Ret	2	18		25	OK
Feedback C/Ret	41	25		28	OK
Feedback D/Ret	22	6		35	OK

QET A/Ret	3	1, 13, 14, 17, 32	60 - 80	79,81,79,89,80	OK
QET B/Ret	35	29, 33, 47, 48		76,75,79,76	OK
QET C/Ret	7	5, 9, 10, 28		77,76,69,76	OK
QET D/Ret	38	36, 40, 43, 44		80,80,79,80	OK


FET heater +/-	45	46	1.0 - 1.1 k	1.06	OK

Qi bias/QET Ret	15		24 - 26 nS	open (A&B), 38 MOhm (C&D)	OK
Qo bias/QET Ret	11			open (A&B), 38 MOhm (C&D)	OK

Qi feedback/Drain/Source	50	16, 31	15 - 17 nS	43 MOhm, 43 MOhm	OK
Qo feedback/Drain/Source	30	12, 27		44 MOhm, 43 MOhm	OK

Qi drain	16	chassis	< 0.1 nS	–	OK
Qo drain	12	chassis		–	OK
Qi source	31	chassis		–	OK
Qo source	27	chassis		–	OK

FET Tsense +/FET heater-	49	46	0.6 - 0.7 V	open	OK
LED 1	42	chassis	1.0 - 1.1 V	1.135	–
LED 2	26	chassis		1.126	–