2013/11/11
| 1210 | Filled LN2 cold trap full. |
|---|
| Detector | G114 | DIB | 1 | |
|---|---|---|---|---|
| date/who: | 2013-11-11 | DS AK | ||
| +lead | - lead | signal | typical | measured |
| 1 | 2 | QET A | 100 to 200 Ω | open |
| 3 | 4 | QET B | 100 to 200 Ω | 206Ω |
| 5 | 6 | QET C | 100 to 200 Ω | 140Ω |
| 7 | 8 | QET D | 100 to 200 Ω | 72Ω |
| 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 | 783kΩ |
| chassis | 10 | LED2 Vforward | 1.0 to 1.1 V | 1.057V |
| 10 | chassis | LED2 Rreverse | <1 nS | <0.1 nS |
| 11 | 12 | Qo-Qi | 114Ω | |
| 12 | 11 | Qi-Qo | 110Ω |
| Detector | G114 | DIB | 2 | |
|---|---|---|---|---|
| date/who: | 2013-11-11 | DS AK | ||
| +lead | - lead | signal | typical | measured |
| 1 | 2 | QET A | 100 to 200 Ω | 191Ω |
| 3 | 4 | QET B | 100 to 200 Ω | 35Ω |
| 5 | 6 | QET C | 100 to 200 Ω | 114Ω |
| 7 | 8 | QET D | 100 to 200 Ω | 35Ω |
| chassis | 9 | LED1 Rforward | 8 to 9 MΩ | 778kΩ |
| chassis | 9 | LED1 Vforward | 1.0 to 1.1 V | 1.055V |
| 9 | chassis | LED1 Rreverse | <1 nS | < .1 nS |
| chassis | 10 | LED2 Rforward | 8 to 9 MΩ | 781kΩ |
| chassis | 10 | LED2 Vforward | 1.0 to 1.1 V | 1.058V |
| 10 | chassis | LED2 Rreverse | <1 nS | < 1 nS |
| 11 | 12 | Qo-Qi | 465kΩ | |
| 12 | 11 | Qi-Qo | 2.8MΩ |
| Detector | G114 | DIB | 3 | |
|---|---|---|---|---|
| date/who: | 2013-11-11 | DS AK | ||
| +lead | - lead | signal | typical | measured |
| 1 | 2 | QET A | 100 to 200 Ω | 32Ω |
| 3 | 4 | QET B | 100 to 200 Ω | 134Ω |
| 5 | 6 | QET C | 100 to 200 Ω | 32Ω |
| 7 | 8 | QET D | 100 to 200 Ω | 85Ω |
| 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 |
| 11 | 12 | Qo-Qi | open | |
| 12 | 11 | Qi-Qo | open |
| 1800 | After detector checkout, detector was placed in second cabinet from top. |
|---|---|
| Lead source was moved to bottom shelf. | |
| 2140 | Assume Vq (charge lines) are connected to pin 12 (Qi) and Vp (phonon lines) are connected to pin 11 (Qo). Started with Vp = Vq = -4 V, and adjusted Vp in 0.5 V steps towards 0 V. Although asymmetric collection was first witnessed at Vp = -3 V, at no point did symmetric collection completely disappear. Perhaps this is expected. Instead, let's use Vp = b*Vq, where b = 0.4. This value was found by Scott Hertel to be the maximum boost for 25 mm thick crystals before bulk discrimination was compromised. |
| Noticed that default 0 V bias values for DCRC31 were incorrect. Not sure how that happened. Set new defaults. | |
| Start flashing detector for 5 hours followed by 2 hour cooldown and data acquisition. Each bias set will consist of four 10-minute data series, interspersed by 30 seconds of flashing and 20 minutes of cooldown. Data will be acquired in following order: |
| Vp [V] | Vq [V] |
|---|---|
| -12 | -4.8 |
| -8 | -3.2 |
| -4 | -1.6 |
| -2 | -0.8 |
| -12 | 0.0 |
| -8 | 0.0 |
| -4 | 0.0 |
| -2 | 0.0 |