2011/03/03
| 0031 | Bias charge channels of both detectors at -3V. Tower temperature 69.6mK. |
|---|---|
| 0035 | Start to take charge data 07110303_0035_F0001. Trigger on Qi OR Qo of both detectors with threshold 24 ADC bins (1.5mV) |
| 0121 | DAQ stopped at file 9 |
| 0140 | Flash G8 on DCRC33, LED1, -0.6 mA, 100 μs ON, 2500 μs OFF. |
| Flash G9 on DCRC30, LED1, -0.6 mA, 100 μs ON, 2500 μs OFF. | |
| Fill N2 cold trap full. | |
| 0250 | Tried to reduce data, but files are corrupted… hope for better luck in the morning. |
| 0934 | Flash both detectors with the above settings 'overnight'. Temperature 465mK when flashing. Stop flashing. |
| 1330 | Fill N2 cold trap full. |
2011/03/03 DCRC30 G9
| Frontend gain | Output gain | Driver offset [V] | SQUID bias [uA] | Lockpoint [mV] | QET bias [uA] | Mod. Depth [mv] | |
|---|---|---|---|---|---|---|---|
| A | 1 | 1 | 0 | 80.6 | 5 | -160 | ? |
| B | 1 | 1 | 0 | 90 | 5.4 | -160 | ? |
| C | 1 | 1 | 0 | 90 | 5 | -160 | ? |
| D | 1 | 1 | 0 | 75 | 2.8 | -160 | ? |
| Noise PSD of phonon channels | |
|---|---|
| A |  |
| B |  |
| C |  |
| D |  |
| 1656 | Need to zap G8 squids |
|---|---|
| 1803 | Found DCRC33 trigger didn't work because its reference still in slave mode. |
| 1840 | Poor modulation depth on G8 PB. Zap SQUIDs again. Wait for tower to cool. |
| 2115 | Helium liquid level 10.9%. Start LHe transfer. |
| 2150 | Stop LHe transfer. Liquid helium level 96.1%. |
| 2322 | Start to take data 07110303_2322_F0001 |
| 2327 | The new version of daq sent by jeter was too slow. Switch to the 20110302_2 version to take data 07110303_2327_F0001. |
| The event rate was slow this time. And we could not see pulses on the display window. Take out the Ba source and the event rate didn't change. Then open the control vi to read out the detector settings and found the DCRC was reset. Later found the DCRC setting was not written to the configuration files correctly. Now need to retune everything. | |
| 2338 | Stop the data taking and retune detector |