UMN CDMS Wiki archive
start › cdms › k100 › run_diary › 20121128

2012/11/28

1000 Re-checked everything to ground. Seems fine. Also re-took measurements for Dibs 1, 2, and 3 on the LEDs.
LED 2 on Dib 3 is now “OPEN”, which means it's conducting too much again. Not a stable LED.
Detector G106a DIB 1
side coax ZB1-4-6 date/who: 2012-11-28 RR
face 2
+lead - lead signal typical measured
chassis 10 LED2 Rforward 8 to 9 MΩ 754 kΩ
chassis 10 LED2 Vforward 1.0 to 1.1 V 1.09 V
10 chassis LED2 Rreverse <1 nS <0.5 nS
chassis 9 LED1 Rforward 8 to 9 MΩ 784 kΩ
chassis 9 LED1 Vforward 1.0 to 1.1 V 1.09 V
9 chassis LED1 Rreverse <1 nS < 0.05 nS
Detector G106a DIB 2
side coax ZB4-4 date/who: 2012-11-28 RR
+lead - lead signal typical measured
chassis 9 LED1 Rforward 8 to 9 MΩ 780 kΩ
chassis 10 LED2 Rforward 8 to 9 MΩ 745 kΩ
chassis 9 LED1 Vforward 1.0 to 1.1 V 1.09 V
chassis 10 LED2 Vforward 1.0 to 1.1 V 1.09 V
9 chassis LED1 Rreverse <1 nS <1 nS
10 chassis LED2 Rreverse <1 nS <4.5 nS
Detector G106a DIB 3
side coax ZB1-4-8 date/who: 2012-11-28 RR
+lead - lead signal typical measured
chassis 9 LED1 Rforward 8 to 9 MΩ 773 kΩ
chassis 9 LED1 Vforward 1.0 to 1.1 V 1.09 V
9 chassis LED1 Rreverse <1 nS <2.6 nS
chassis 10 LED2 Rforward 8 to 9 MΩ 765 kΩ
chassis 10 LED2 Vforward 1.0 to 1.1 V 1.09 V
10 chassis LED2 Rreverse <1 nS Open (OL)
2030 Electrical checkout complete. Everything seems fine but LED 2 on Dib 3 still reads “OL”, meaning it's conducting. However, it still seems to have the appropriate resistance and voltage measurements.
Cooldown checkout sheet (rev C SQUET)
Detector: G106a DIB1 BH:
SC: ZB1-4-6 300 K
Face: 2 Date 2012-11-28
SQUET: ZC23 Who RR, AK
Signal Pos. lead Gnd lead Nominal Actual Chassis
(Gnd lead)
Nominal:
< 0.1 nS
Phonon
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 - 80 137, 115, 93, 97, 95 OK
QET B/Ret 35 29, 33, 47, 48 90, 89, 107,90 OK
QET C/Ret 7 5, 9, 10, 28 90, 86, 75, 85 OK
QET D/Ret 38 36, 40, 43, 44 114, 86, 86, 86 OK
Charge
FET heater +/- 45 46 1.0 - 1.1 k 1.069 OK
Qi bias/QET Ret 15 24 - 26 nS 25 OK
Qo bias/QET Ret 11 26 OK
Qi feedback/Drain/Source 50 16, 31 15 - 17 nS 23 OK
Qo feedback/Drain/Source 30 12, 27 23 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 0.726 OK
LED 1 chassis 42 1.0 - 1.1 V 1.127 –
LED 2 chassis 26 1.116 –
Cooldown checkout sheet (rev C SQUET)
Detector: G106a DIB2 BH:
SC: ZB1-4-4 300 K
Face: 5 Date 2012-11-28
SQUET: ZC28 Who AK
Signal Pos. lead Gnd lead Nominal Actual Chassis
(Gnd lead)
Nominal:
< 0.1 nS
SQUID bias A/Ret 4 20 3 - 5 k 4k OK
SQUID bias B/Ret 19 34 4.3k OK
SQUID bias C/Ret 8 24 4.9k OK
SQUID bias D/Ret 23 39 4.3k OK
Feedback A/Ret 37 21 15 - 25 k 23.6k OK
Feedback B/Ret 2 18 17.4k OK
Feedback C/Ret 41 25 20.8k OK
Feedback D/Ret 22 6 18.4k OK
QET A/Ret 3 1, 13, 14, 17, 32 60 - 80 115, 100, 80, 84, 81 OK
QET B/Ret 35 29, 33, 47, 48 74, 73, 92, 74 OK
QET C/Ret 7 5, 9, 10, 28 77. 72, 64, 72 OK
QET D/Ret 38 36, 40, 43, 44 93, 72, 72, 72 OK
FET heater +/- 45 46 1.0 - 1.1 k 1.06k OK
Qi bias/QET Ret 15 24 - 26 nS 26 OK
Qo bias/QET Ret 11 26 OK
Qi feedback/Drain/Source 50 16, 31 15 - 17 nS 23 OK
Qo feedback/Drain/Source 30 12, 27 23 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 .71 V OK
LED 1 chassis 42 1.0 - 1.1 V 1.12 V –
LED 2 chassis 26 1.11 V –
Cooldown checkout sheet (rev C SQUET)
Detector: G106a DIB3 BH:
SC: ZB1-4-8 300 K
Face: 6 Date 2012-11-28
SQUET: ZC70 Who AK
Signal Pos. lead Gnd lead Nominal Actual Chassis
(Gnd lead)
Nominal:
< 0.1 nS
SQUID bias A/Ret 4 20 3 - 5 k 4.8k OK
SQUID bias B/Ret 19 34 4.4k OK
SQUID bias C/Ret 8 24 4.6k OK
SQUID bias D/Ret 23 39 5.2k OK
Feedback A/Ret 37 21 15 - 25 k 29k OK
Feedback B/Ret 2 18 25k OK
Feedback C/Ret 41 25 28k OK
Feedback D/Ret 22 6 35k OK
QET A/Ret 3 1, 13, 14, 17, 32 60 - 80 122, 113, 93, 97, 94 OK
QET B/Ret 35 29, 33, 47, 48 87, 86, 103, 86 OK
QET C/Ret 7 5, 9, 10, 28 89, 85, 76, 85 OK
QET D/Ret 38 36, 40, 43, 44 108, 88, 87, 88 OK
FET heater +/- 45 46 1.0 - 1.1 k 1.066k OK
Qi bias/QET Ret 15 24 - 26 nS open OK
Qo bias/QET Ret 11 open OK
Qi feedback/Drain/Source 50 16, 31 15 - 17 nS 23 OK
Qo feedback/Drain/Source 30 12, 27 23 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 chassis 42 1.0 - 1.1 V 1.12V –
LED 2 chassis 26 1.10V –
2155 Sealed IVC (many screws clicked). Closed check valve. Begin evacuating with scroll pump.
2242 Pressure is at 4.6E-2 mbar. Open IVC to turbo pump and isolate scroll pump.