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2019/10/14 (Monday)

Previous Day

Status: Tower Assembly
1030 Prepare new indium source blocker from scrap indium supply, about 1.1 mm thick.
1040 Cut strip of indium blocker to 0.125“ width to fit slot width in source plate
1045 Cut indium blocker to 2.60mm length
1045 Place new blocker at nearer-to-center location, near edge at +4.59 mm from center position.

Description Distance
Center to edge of blocker 1 4.59 mm
Width of Blocker 1 2.60 mm
Center to edge of blocker 2 25.05 mm
Width of blocker 2 3.07 mm
1055 Put source holder on stack above detector, same orientation as Sep 17. The source will move outwards towards channel PBS2 or in the direction of DIB 2.

1100 Tape down wires from source housing, blocking most of the light path into the source housing.
Ready for electrical check.
1430 Well, not quite ready for electrical check… take housing lid off of source holder so we can check which wire is connected to which endstop sensor
Detector G106a DIB 1
side coax ST-3-3 date/who: 2019 Oct 14 JN, MF
face 1
+lead - lead signal typical previous measured
1 2 QET A 100 to 200 Ω 131Ω 131 Ω
2 4 QETA-B 100 to 200 Ω 184Ω 186 Ω
3 4 QET B 100 to 200 Ω 183Ω 186 Ω
4 6 QETB-C 100 to 200 Ω 226Ω 229 Ω
5 6 QET C 100 to 200 Ω 192Ω 192 Ω
6 8 QETC-D 100 to 200 Ω 194Ω 193 Ω
7 8 QET D 100 to 200 Ω 146Ω 144 Ω
2 8 QETA-D 100 to 200 Ω 173Ω 172 Ω
chassis 9 LED1 Rforward 8 to 9 MΩ 761kΩ 1 MΩ
chassis 9 LED1 Vforward 1.0 to 1.1 V 1.106V 1.10 V
9 chassis LED1 Rreverse <1 nS <0.1nS <0.1 nS
chassis 10 LED2 Vforward 8 to 9 MΩ open open
chassis 10 LED2 Vforward 1.0 to 1.1 V open open
10 chassis LED2 Rreverse <1 nS <0.1nS 0.1 nS
1 11 Qo Rbias 24 to 26 nS 25.4nS 25 nS
12 11 Qo C coupling <1 nS <0.2nS <0.1 nS
12 13 Qo Rfeedback 24 to 26 nS 25.5nS 26 nS
1 14 Qi Rbias 24 to 26 nS 25.3nS 26 nS
15 14 Qi C coupling <1 nS <0.1nS 0.1 nS
15 16 Qi Rfeedback 2image4 to 26 nS 25.4nS 26 nS
All pins → Ground all <0.2 nS
Detector G106a DIB 2
side coax ST-3-10 date/who: 2019 Oct 14 MF, DS
face 4
+lead - lead signal typical previous measured
1 2 QET A 100 to 200 Ω 135 Ω 206 Ω
2 4 QETA-B 100 to 200 Ω 193 Ω 191 Ω
3 4 QET B 100 to 200 Ω 180 Ω 135 Ω
4 6 QETB-C 100 to 200 Ω 184 Ω 193 Ω
5 6 QET C 100 to 200 Ω 134 Ω 180 Ω
6 8 QETC-D 100 to 200 Ω 184 Ω 185 Ω
7 8 QET D 100 to 200 Ω 134 Ω 134 Ω
2 8 QETA-D 100 to 200 Ω 204 Ω 203 Ω
chassis 9 LED1 Rforward 8 to 9 MΩ 760 kΩ 0.76 MΩ
chassis 9 LED1 Vforward 1.0 to 1.1 V 1.11 V 1.105 V
9 chassis LED1 Rreverse <1 nS <0.1 nS 0.2 nS
chassis 10 LED2 Rforward 8 to 9 MΩ 729 kΩ 0.735 MΩ
chassis 10 LED2 Vforward 1.0 to 1.1 V 1.11 V 1.103 V
10 chassis LED2 Rreverse <1 nS 3 nS 1.8 nS
1 11 Qo Rbias 24 to 26 nS 26.2 nS 27 nS
12 11 Qo C coupling <1 nS <0.2 nS 0.2 nS
12 13 Qo Rfeedback 24 to 26 nS 26.3 nS 26 nS
1 14 Qi Rbias 24 to 26 nS 25.2 nS 25 nS
15 14 Qi C coupling <1 nS <0.2 nS 0.1 nS
15 16 Qi Rfeedback 24 to 26 nS 26.3 nS 26 nS
All pins → Ground all < 1 nS
Detector G106a DIB 3
side coax ST-3-8 date/who: 2019 Oct 14 MF, DS
face 5
+lead - lead signal typical previous measured
1 2 QET A 100 to 200 Ω 201 Ω 201 Ω
2 4 QETA-B 100 to 200 Ω 241 Ω 239 Ω
3 4 QET B 100 to 200 Ω 221 Ω 219 Ω
4 6 QETB-C 100 to 200 Ω 186 Ω 185 Ω
5 6 QET C 100 to 200 Ω 172 Ω 171 Ω
6 8 QETC-D 100 to 200 Ω 185 Ω 184 Ω
7 8 QET D image 100 to 200 Ω 188 Ω 166 Ω
2 8 QETA-D 100 to 200 Ω 211 Ω 211 Ω
chassis 9 LED1 Rforward 8 to 9 MΩ 757 kΩ 0.76 MΩ
chassis 9 LED1 Vforward 1.0 to 1.1 V 1.11 V 1.107 V
9 chassis LED1 Rreverse <1 nS <1 nS 3 MΩ
chassis 10 LED2 Rforward 8 to 9 MΩ 220 kΩ 216 kΩ
chassis 10 LED2 Vforward 1.0 to 1.1 V 1.11 V 1.094 V
10 chassis LED2 Rreverse <1 nS 7.5 MΩ 500 kΩ
1 11 Qo Rbias 24 to 26 nS <0.1 nS <0.1 nS
12 11 Qo C coupling <1 nS <0.2 nS 0.1 nS
12 13 Qo Rfeedback 24 to 26 nS 25.2 nS 25 nS
1 14 Qi Rbias 24 to 26 nS <0.1 nS 0.1 nS
15 14 Qi C coupling <1 nS <0.1 nS 0.1 nS
15 16 Qi Rfeedback 24 to 26 nS 25.2 nS 25 nS
All pins → Ground <0.1 nS except LEDs
Detector G106a DIB Motor
side coax - date/who: 2019 Oct 14 JN, MF
face 3
+lead - lead signal typical previous measured
1 2 Motor Coil A 5-10 kΩ 7.13 kΩ 7.10 kΩ
3 4 Motor Coil B 5-10 kΩ 7.54 kΩ 7.54 kΩ
5 chassis Backward endstop - ground open - open
6 chassis Forward endstop - ground open - open
Also removed lid and checked source holder to chassis: around 12 Ω at bottom of tower
1520 Finish electrical check, looks good
1535 Finish tower assembly: tighten lid, install the adapter plate (the half that had been removed to remove the source housing). Put tower in purge cabinet.

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