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2012/11/27

G106a arrived today. Pressure in puck was 7 psig. Puck was transferred to clean room and the detector was removed. A detector level check was performed.
Note that G106a has the same charge and phonon channel configuration as G103a. However, the number of LEDs that G106a has is 6.
Table 1: Detector level continuity check.
DIB 1 DIB 2 DIB 3
Signal Measured Measured Measured
QET A 31.2 Ω 117.3 Ω 99.3 Ω
QET B 105.1 Ω 31.2 Ω 128.3 Ω
QET C 94.5 Ω 77.1 Ω 71.4 Ω
QET D 59.1 Ω 30.2 Ω Ω 62.8 Ω
LED1 R forward 793 kΩ 754 kΩ 783 kΩ
LED1 V forward 1.05 V 1.044 V 1.05 V
LED1 G backward <0.03 nS <0.1 nS <2.6 nS
LED2 R forward 768 kΩ 754 kΩ 776 kΩ
LED2 V forward 1.051 V 1.049 V 1.049 V
LED2 G backward <0.3 nS <9 nS Open
Qo(+ve)-Qi(-ve) 67.3 Ω 58.1 Ω N/A
Qi(+ve)-Qo(-ve) 64.2 Ω 52 Ω N/A
LED 2 conductance for Dib 2, and LED 1 for Dib 3 are a bit high. LED 2 on Dib 3 is fully conducting. Not a good sign.
2120 Finished tower assembly and checkout.
Source is located next to channel C (C1).
Table 2 - Tower checkout
Detector G106a DIB 1
side coax ZB1-4-6 date/who: 2012-11-27 RR & AK
face 2
+lead - lead signal typical measured
1 2 QET A 100 to 200 Ω 126 Ω
2 4 QETA-B 100 to 200 Ω 205 Ω
3 4 QET B 100 to 200 Ω 192 Ω
4 6 QETB-C 100 to 200 Ω 210 Ω
5 6 QET C 100 to 200 Ω 187 Ω
6 8 QETC-D 100 to 200 Ω 198 Ω
7 8 QET D 100 to 200 Ω 155 Ω
2 8 QETA-D 100 to 200 Ω 177 Ω
chassis 10 LED2 Rforward 8 to 9 MΩ 756 kΩ
chassis 10 LED2 Vforward 1.0 to 1.1 V 1.094 V
10 chassis LED2 Rreverse <1 nS <0.7 nS
chassis 9 LED1 Rforward 8 to 9 MΩ 784 kΩ
chassis 9 LED1 Vforward 1.0 to 1.1 V not measured
9 chassis LED1 Rreverse <1 nS not measured
1 11 Qo Rbias 24 to 26 nS 26 nS
12 11 Qo C coupling <1 nS <0.3 nS
12 13 Qo Rfeedback 24 to 26 nS 26 nS
1 14 Qi Rbias 24 to 26 nS 25 nS
15 14 Qi C coupling <1 nS <0.5 nS
15 16 Qi Rfeedback 24 to 26 nS 26 nS
Detector G106a DIB 2
side coax ZB1-4-4 date/who: 2012-11-27 RR & AK
face 5
+lead - lead signal typical measured
1 2 QET A 100 to 200 Ω 203 Ω
2 4 QETA-B 100 to 200 Ω 186 Ω
3 4 QET B 100 to 200 Ω 124 Ω
4 6 QETB-C 100 to 200 Ω 183 Ω
5 6 QET C 100 to 200 Ω 169 Ω
6 8 QETC-D 100 to 200 Ω 175 Ω
7 8 QET D 100 to 200 Ω 125 Ω
2 8 QETA-D 100 to 200 Ω 198 Ω
chassis 9 LED1 Rforward 8 to 9 MΩ 782 kΩ
chassis 10 LED2 Rforward 8 to 9 MΩ 744 kΩ
chassis 9 LED1 Vforward 1.0 to 1.1 V 1.094 V
chassis 10 LED2 Vforward 1.0 to 1.1 V 1.09 V
9 chassis LED1 Rreverse <1 nS <0.4 nS
10 chassis LED2 Rreverse <1 nS <5 nS
1 11 Qo Rbias 24 to 26 nS 25 nS
12 11 Qo C coupling <1 nS <0.2 nS
12 13 Qo Rfeedback 24 to 26 nS 26 nS
1 14 Qi Rbias 24 to 26 nS 26 nS
15 14 Qi C coupling <1 nS <0.2 nS
15 16 Qi Rfeedback 24 to 26 nS 26 nS
Detector G106a DIB 3
side coax ZB1-4-8 date/who: 2012-11-27 RR & AK
face 6
+lead - lead signal typical measured
1 2 QET A 100 to 200 Ω 181 Ω
2 4 QETA-B 100 to 200 Ω 224 Ω
3 4 QET B 100 to 200 Ω 205 Ω
4 6 QETB-C 100 to 200 Ω 167 Ω
5 6 QET C 100 to 200 Ω 153 Ω
6 8 QETC-D 100 to 200 Ω 166 Ω
7 8 QET D 100 to 200 Ω 148 Ω
2 8 QETA-D 100 to 200 Ω 193 Ω
chassis 9 LED1 Rforward 8 to 9 MΩ 774 kΩ
chassis 9 LED1 Vforward 1.0 to 1.1 V 1.089 V
9 chassis LED1 Rreverse <1 nS <0.9 nS
chassis 10 LED2 Rforward 8 to 9 MΩ 765 kΩ
chassis 10 LED2 Vforward 1.0 to 1.1 V 1.1 V
10 chassis LED2 Rreverse <1 nS 3.2 nS
LED 2 on Dib 2 is still high. Now LED 2 on Dib 3 is as well, while LED 1 is okay. Also, QET A on Dib 1 is lower than expected.