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2012/01/07

1005 Filled LN2 cold trap.
Fed Cricket 4 pellets.
1040 Had to open V6 up to 14.1% to get mixture cleaning initiated again.
1302 Pump mixture to dump.
1340 It seems there is only 717 mbar in the dump. This was the same concern as yesterday. Currently pumping out both cold traps to the dump, and G1 < 0.2 mbar. P1 = 0.013 mbar.
1413 Dump is closed off. G2 reads ~ 720 mbar.
Sealed off IVC. Start pumping on 1 K pot.
1427 Begin condensing mixture - opened gate and condenser speedivalve. Opened V1, V9, and V3.
Opened V13A.
1450 Closed V9. Left 371 mbar in the dump. There is about 350 mbar to be used for condensing/circulation.
Opened V12A all the way.
1606 Resistance check at 4 K. Nothing different to be worried about.
1723 G1 and G2 are leveling off (58, 48 mbar respectively). Mixing chamber: 2.1 K.
Filled LN2 cold trap.
Fed Cricket 4 pellets.
1732 Begin automatic circulation sequence.
1803 End automatic circulation sequence. Mixing chamber is at 104 mK.
Electrical checks below. Note that at room temperature an electrical check was not conducted.
Cooldown checkout sheet (rev C SQUET)
Detector: G106a DIB1 Stripline: 19
SC: ZB1-4-6 80K LHe
Face: 2 Date 2013-01-04 Date 2013-01-06
SQUET: ZC23 Who RR Who RR
Signal Pos. lead Gnd lead Nominal Actual Chassis Nominal Actual Chassis
(Gnd lead) (Gnd lead)
Nominal: Nominal:
< 0.1 nS < 0.1 nS
Phonon
SQUID bias A/Ret 4 20 1 - 2 k 1.6k OK 80 - 140 107 OK
SQUID bias B/Ret 19 34 2.0k OK 80 - 140 96 OK
SQUID bias C/Ret 8 24 1.7k OK 80 - 140 105 OK
SQUID bias D/Ret 23 39 1.6k OK 80 - 140 95 OK
Feedback A/Ret 37 21 9 - 13 k 7.3k OK 1.0 - 1.3 k 1.27k OK
Feedback B/Ret 2 18 8.2k OK 1.0 - 1.3 k 1.27k OK
Feedback C/Ret 41 25 7.6k OK 1.0 - 1.3 k 1.26k OK
Feedback D/Ret 22 6 7.1k OK 1.0 - 1.3 k 1.25k OK
QET A/Ret 3 1, 13, 14, 17, 32 30 - 40 69, 62, 52, 55, 53 OK 20 - 30 54, 46, 36, 39, 37 OK
QET B/Ret 35 29, 33, 47, 48 51, 50, 65, 50, OK 20 - 30 35,35,49,35 OK
QET C/Ret 7 5, 9, 10, 28 48, 47, 36, 46 OK 20 - 30 34,33,22,32 OK
QET D/Ret 38 36, 40, 43, 44 54, 48, 47, 48 OK 20 - 30 41, 33, 33, 33 OK
Charge
FET heater +/- 45 46 1.0 - 1.1 k 1.045k OK 1.0 - 1.1 k 1.26k OK
Qi bias/QET Ret 15 < 1 nS OK OK <1 nS OK OK
Qo bias/QET Ret 11 OK OK <1 nS OK OK
Qi feedback/Drain/Source 50 16, 31 6 - 8 nS 20,20 OK <1 nS 18,18 OK
Qo feedback/Drain/Source 30 12, 27 20,20 OK <1 nS 19,19 OK
Qi drain 16 chassis < 0.1 nS – OK <0.1 nS – OK
Qo drain 12 chassis – OK <0.1 nS – OK
Qi source 31 chassis – OK <0.1 nS – OK
Qo source 27 chassis – OK <0.1 nS – OK
FET Tsense +/FET heater- 49 46 0.9 - 1.0 V 1.094 OK — – OK
LED 1 chassis 42 1.2 - 1.5 V 1.403 – — – –
LED 2 chassis 26 1.395 – — – –
Cooldown checkout sheet (rev C SQUET)
Detector: G106a DIB2 Stripline: 20
SC: ZB1-4-4 LN LHe
Face: 5 Date 2013-01-04 Date 2013-01-06
SQUET: ZC28 Who RR Who RR
Signal Pos. lead Gnd lead Nominal Actual Chassis Nominal Actual Chassis
(Gnd lead) (Gnd lead)
Nominal: Nominal:
< 0.1 nS < 0.1 nS
Phonon
SQUID bias A/Ret 4 20 1 - 2 k 1.5k OK 80 - 140 113 OK
SQUID bias B/Ret 19 34 1.5k OK 80 - 140 91 OK
SQUID bias C/Ret 8 24 1.9k OK 80 - 140 102 OK
SQUID bias D/Ret 23 39 1.5k OK 80 - 140 88 OK
Feedback A/Ret 37 21 9 - 13 k 8.4k OK 1.0 - 1.3 k 1.25k OK
Feedback B/Ret 2 18 7.2k OK 1.0 - 1.3 k 1.26k OK
Feedback C/Ret 41 25 8.6k OK 1.0 - 1.3 k 1.42k OK
Feedback D/Ret 22 6 7.1k OK 1.0 - 1.3 k 1.25k OK
QET A/Ret 3 1, 13, 14, 17, 32 30 - 40 63, 53, 42, 46, 43 OK 20 - 30 47, 39, 28, 32, 29 OK
QET B/Ret 35 29, 33, 47, 48 41, 40, 54, 41 OK 20 - 30 28, 27, 41, 28, OK
QET C/Ret 7 5, 9, 10, 28 40, 38, 31, 38 OK 20 - 30 24,23,16,23 OK
QET D/Ret 38 36, 40, 43, 44 46, 40, 39, 40 OK 20 - 30 34, 27, 26, 26 OK
Charge
FET heater +/- 45 46 1.0 - 1.1 k 1.052k OK 1.0 - 1.1 k 1.24k OK
Qi bias/QET Ret 15 < 1 nS OK OK <1 nS OK OK
Qo bias/QET Ret 11 OK OK <1 nS OK OK
Qi feedback/Drain/Source 50 16, 31 6 - 8 nS 21,21 OK <1 nS 19,19 OK
Qo feedback/Drain/Source 30 12, 27 21,21 OK <1 nS 19,19 OK
Qi drain 16 chassis < 0.1 nS – OK <0.1 nS – OK
Qo drain 12 chassis – OK <0.1 nS – OK
Qi source 31 chassis – OK <0.1 nS – OK
Qo source 27 chassis – OK <0.1 nS – OK
FET Tsense +/FET heater- 49 46 0.9 - 1.0 V 1.084 OK — – OK
LED 1 chassis 42 1.2 - 1.5 V 1.4 – — – –
LED 2 chassis 26 1.392 – — – –
Cooldown checkout sheet (rev C SQUET)
Detector: G106a DIB3 Stripline: 21
SC: ZB1-4-8 LN LHe
Face: 6 Date 2013-01-04 Date 2013-01-06
SQUET: ZC70 Who RR Who RR
Signal Pos. lead Gnd lead Nominal Actual Chassis Nominal Actual Chassis
(Gnd lead) (Gnd lead)
Nominal: Nominal:
< 0.1 nS < 0.1 nS
Phonon
SQUID bias A/Ret 4 20 1 - 2 k 2.0k OK 80 - 140 100 OK
SQUID bias B/Ret 19 34 1.7k OK 80 - 140 106 OK
SQUID bias C/Ret 8 24 1.8k OK 80 - 140 98 OK
SQUID bias D/Ret 23 39 2.1k OK 80 - 140 96 OK
Feedback A/Ret 37 21 9 - 13 k 15k OK 1.0 - 1.3 k 1.26k OK
Feedback B/Ret 2 18 9.2k OK 1.0 - 1.3 k 1.26k OK
Feedback C/Ret 41 25 14k OK 1.0 - 1.3 k 1.26k OK
Feedback D/Ret 22 6 17k OK 1.0 - 1.3 k 1.24k OK
QET A/Ret 3 1, 13, 14, 17, 32 30 - 40 71, 64, 53, 57, 54 OK 20 - 30 48, 41, 30, 34, 31 OK
QET B/Ret 35 29, 33, 47, 48 45, 45, 58, 45 OK 20 - 30 29, 28, 42, 29 OK
QET C/Ret 7 5, 9, 10, 28 48, 47, 38, 47 OK 20 - 30 27, 26, 17, 26 OK
QET D/Ret 38 36, 40, 43, 44 56, 50, 49, 49 OK 20 - 30 36, 28, 27, 27 OK
Charge
FET heater +/- 45 46 1.0 - 1.1 k 1.044k OK 1.0 - 1.1 k 1.25k OK
Qi bias/QET Ret 15 < 1 nS open OK <1 nS open OK
Qo bias/QET Ret 11 open OK <1 nS open OK
Qi feedback/Drain/Source 50 16, 31 6 - 8 nS 20,20 OK <1 nS 18,18 OK
Qo feedback/Drain/Source 30 12, 27 20,20 OK <1 nS 19,19 OK
Qi drain 16 chassis < 0.1 nS – OK <0.1 nS – OK
Qo drain 12 chassis – OK <0.1 nS – OK
Qi source 31 chassis – OK <0.1 nS – OK
Qo source 27 chassis – OK <0.1 nS – OK
FET Tsense +/FET heater- 49 46 0.9 - 1.0 V 1.091 OK — – OK
LED 1 chassis 42 1.2 - 1.5 V 1.396 OK — – –
LED 2 chassis 26 1.389 23 nS — – 24 nS