UMN CDMS Wiki archive
start › cdms › k100 › run_diary › 20130812

2013/08/12

1925 Commence tower assembly procedure.
2010 Mount Am-241 source facing Side 1 Phonon Channel B (A1).
Remove G106a from purge cabinet to mount on tower.
2225 Perform tower level continuity checks:
Detector G106a DIB 1
side coax ZB1-4-4 date/who: 2013-08-12 HC
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 206 Ω
3 4 QET B 100 to 200 Ω 192 Ω
4 6 QETB-C 100 to 200 Ω 211 Ω
5 6 QET C 100 to 200 Ω 188 Ω
6 8 QETC-D 100 to 200 Ω 201 Ω
7 8 QET D 100 to 200 Ω 155 Ω
2 8 QETA-D 100 to 200 Ω 180 Ω
chassis 9 LED1 Rforward 8 to 9 MΩ 775 kΩ
chassis 9 LED1 Vforward 1.0 to 1.1 V 1.092 V
9 chassis LED1 Rreverse <1 nS ≈ 1 nS
chassis 10 LED2 Rforward 8 to 9 MΩ 752 kΩ
chassis 10 LED2 Vforward 1.0 to 1.1 V 1.093 V
10 chassis LED2 Rreverse <1 nS <0.3 nS
1 11 Qo Rbias 24 to 26 nS 26 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 2
side coax ZB1-4-6 date/who: 2013-08-12 HC
face 5
+lead - lead signal typical measured
1 2 QET A 100 to 200 Ω 201 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 168 Ω
6 8 QETC-D 100 to 200 Ω 174 Ω
7 8 QET D 100 to 200 Ω 123 Ω
2 8 QETA-D 100 to 200 Ω 196 Ω
chassis 9 LED1 Rforward 8 to 9 MΩ 774 kΩ
chassis 9 LED1 Vforward 1.0 to 1.1 V 1.092 V
9 chassis LED1 Rreverse <1 nS <0.2 nS
chassis 10 LED2 Rforward 8 to 9 MΩ 741 kΩ
chassis 10 LED2 Vforward 1.0 to 1.1 V 1.089 V
10 chassis LED2 Rreverse <1 nS <9 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 25 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: 2012-08-12 HC
face 6
+lead - lead signal typical measured
1 2 QET A 100 to 200 Ω 180 Ω
2 4 QETA-B 100 to 200 Ω 224 Ω
3 4 QET B 100 to 200 Ω 204 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 167 Ω
7 8 QET D 100 to 200 Ω 148 Ω
2 8 QETA-D 100 to 200 Ω 195 Ω
chassis 9 LED1 Rforward 8 to 9 MΩ 769 kΩ
chassis 9 LED1 Vforward 1.0 to 1.1 V 1.087 V
9 chassis LED1 Rreverse <1 nS <11 nS
chassis 10 LED2 Rforward 8 to 9 MΩ 753 kΩ
chassis 10 LED2 Vforward 1.0 to 1.1 V 1.086 V
10 chassis LED2 Rreverse <1 nS OL
2255 With the exception of three LEDs (LED2 on DIB2 and LED1 & LED2 on DIB3) no shorts to ground found. State of aforementioned LEDs appears to be worse than that recorded during last checkout at start of Run 33. Three LEDs should be enough to neutralise the crystal.
2330 Tower assembly procedure complete. Bag up tower for installation tomorrow.