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2016/03/24 (Thursday)

Previous Day

Status: Tower + assembled stack in purge cabinet overnight. Striplines in seperate purge cabinet.
1120 Enter clean room and perform one last detector-level electrical check to make sure nothing happened during our rattling-noise investigations yesterday.
Detector G114 DIB 1
date/who: 2016-03-24 DS
+lead - lead signal typical measured
1 2 QET A 100 to 200 Ω open
3 4 QET B 100 to 200 Ω 165.6 Ω
5 6 QET C 100 to 200 Ω 129.6 Ω
7 8 QET D 100 to 200 Ω 72.5 Ω
9 chassis LED1 Rforward 8 to 9 MΩ open
9 chassis LED1 Vforward 1.0 to 1.1 V
chassis 9 LED1 Rreverse <1 nS
10 chassis LED2 Rforward 8 to 9 MΩ 668kΩ
10 chassis LED2 Vforward 1.0 to 1.1 V
chassis 10 LED2 Rreverse <1 nS
11 12 Qo-Qi 86.9Ω
12 11 Qi-Qo 83.5Ω
Detector G114 DIB 2
date/who: 2016-03-24 DS
+lead - lead signal typical measured
1 2 QET A 100 to 200 Ω 155 Ω
3 4 QET B 100 to 200 Ω 35.4 Ω
5 6 QET C 100 to 200 Ω 108.3 Ω
7 8 QET D 100 to 200 Ω 35.0 Ω
9 chassis LED1 Rforward 8 to 9 MΩ 681kΩ
9 chassis LED1 Vforward 1.0 to 1.1 V
chassis 9 LED1 Rreverse <1 nS
10 chassis LED2 Rforward 8 to 9 MΩ 676 kΩ
10 chassis LED2 Vforward 1.0 to 1.1 V
chassis 10 LED2 Rreverse <1 nS
11 12 Qo-Qi 281kΩ
12 11 Qi-Qo 2.5MΩ
Detector G114 DIB 3
date/who: 2016-03-24 DS
+lead - lead signal typical measured
1 2 QET A 100 to 200 Ω 31.1 Ω
3 4 QET B 100 to 200 Ω 82.9 Ω
5 6 QET C 100 to 200 Ω 30.4 Ω
7 8 QET D 100 to 200 Ω 83.2 Ω
9 chassis LED1 Rforward 8 to 9 MΩ open
9 chassis LED1 Vforward 1.0 to 1.1 V
chassis 9 LED1 Rreverse <1 nS
10 chassis LED2 Rforward 8 to 9 MΩ open
10 chassis LED2 Vforward 1.0 to 1.1 V
chassis 10 LED2 Rreverse <1 nS
11 12 Qo-Qi open
12 11 Qi-Qo open
1140 Everything looks as it did yesterday before we heard the phantom ka-chunk. Time to finish assembling the tower. Tape thermometer wire to spool, then attach side-coaxes.
1250 Finish assembling tower. Perform tower level electrical check:
Detector G114 DIB 1
side coax ZB1-4-4 date/who: 2016-03-24 DS NM
face 2
+lead - lead signal typical measured
1 2 QET A 100 to 200 Ω open
2 4 QETA-B 100 to 200 Ω 274 Ω
3 4 QET B 100 to 200 Ω 255 Ω
4 6 QETB-C 100 to 200 Ω 255 Ω
5 6 QET C 100 to 200 Ω 223 Ω
6 8 QETC-D 100 to 200 Ω 219 Ω
7 8 QET D 100 to 200 Ω 169 Ω
2 8 QETA-D 100 to 200 Ω 226 Ω
chassis 9 LED1 Rforward 8 to 9 MΩ open
chassis 9 LED1 Vforward 1.0 to 1.1 V open
9 chassis LED1 Rreverse <1 nS <1 nS
chassis 10 LED2 Rforward 8 to 9 MΩ 677K
chassis 10 LED2 Vforward 1.0 to 1.1 V 1.090 V
10 chassis LED2 Rreverse <1 nS <0.3 nS
1 11 Qo Rbias 24 to 26 nS <1 nS
12 11 Qo C coupling <1 nS <1 nS
12 13 Qo Rfeedback 24 to 26 nS 26 nS
1 14 Qi Rbias 24 to 26 nS <1 nS
15 14 Qi C coupling <1 nS <1 nS
15 16 Qi Rfeedback 24 to 26 nS 26 nS
Detector G114 DIB 2
side coax ZB1-4-6 date/who: 2016-03-24 DS NM
face 5
+lead - lead signal typical measured
1 2 QET A 100 to 200 Ω 242 Ω
2 4 QETA-B 100 to 200 Ω 209 Ω
3 4 QET B 100 to 200 Ω 128 Ω
4 6 QETB-C 100 to 200 Ω 216 Ω
5 6 QET C 100 to 200 Ω 199 Ω
6 8 QETC-D 100 to 200 Ω 195 Ω
7 8 QET D 100 to 200 Ω 129 Ω
2 8 QETA-D 100 to 200 Ω 222 Ω
chassis 9 LED1 Rforward 8 to 9 MΩ 630 kΩ
chassis 9 LED1 Vforward 1.0 to 1.1 V 1.09 V
9 chassis LED1 Rreverse <1 nS <1 nS
chassis 10 LED2 Rforward 8 to 9 MΩ 640 kΩ
chassis 10 LED2 Vforward 1.0 to 1.1 V 1.09 V
10 chassis LED2 Rreverse <1 nS <1 nS
1 11 Qo Rbias 24 to 26 nS 23 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 <0.4 nS
15 16 Qi Rfeedback 24 to 26 nS 26 nS
Detector G114 DIB 3
side coax ZB1-4-8 date/who: 2016-03-24 DS NM
face 6
+lead - lead signal typical measured
1 2 QET A 100 to 200 Ω 115 Ω
2 4 QETA-B 100 to 200 Ω 184 Ω
3 4 QET B 100 to 200 Ω 160 Ω
4 6 QETB-C 100 to 200 Ω 149 Ω
5 6 QET C 100 to 200 Ω 114 Ω
6 8 QETC-D 100 to 200 Ω 186 Ω
7 8 QET D 100 to 200 Ω 168 Ω
2 8 QETA-D 100 to 200 Ω 187 Ω
chassis 9 LED1 Rforward 8 to 9 MΩ open
chassis 9 LED1 Vforward 1.0 to 1.1 V open
9 chassis LED1 Rreverse <1 nS open
chassis 10 LED2 Rforward 8 to 9 MΩ open
chassis 10 LED2 Vforward 1.0 to 1.1 V open
10 chassis LED2 Rreverse <1 nS open
NOTE DIB3 PIN 5 (socket) on the tower is still very loose, which will most likely cause issues when attempting to mount SQUET cards during installation.
1525 Testing resistance of broken stripline in clean room. Using Ohm meter, checked resistance between cold-end pins and stripline ground plane. All > 1 GOhm. Also checked a subset of adjacent pins and found R_ij > 1 GOhm.
1541 Repeating pin-pin measurements using MegOhmmeter. At TΩ scale, body movements near setup cause momentary resistance changes.
+lead - lead Resistance
1 14 > 1 TΩ Adjacent on stripline.
1 15 > 1 TΩ
13 15 > 1 TΩ
1 GND pin > 1 TΩ

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