On 28/11/2018:
Performed pulser walkthrough, Run # 181128090835
- Run time: 1986s
- Pulser ON, amplitude changed
- Target: None
- Beam: None
- DT ~ 11%
- See attached picture 1 for sample pulser walkthrough spectrum, ADC 2 channel 3 (ADC 3 in DAQ file browser)
Pulser amplitudes swept through (measured amplitude checked after collecting pulser walkthrough to ensure no additional load was placed on pulser):
| Pulser Amplitude Setting |
Pulser Measured Amplitude (mV) |
| 70000 |
366 |
| 60000 |
318 |
| 50000 |
268 |
| 40000 |
206 |
| 30000 |
155 |
| 20000 |
102 |
| 18000 |
92.4 |
| 16000 |
82.8 |
| 14000 |
72.8 |
| 12000 |
62.4 |
| 10000 |
51.8 |
| 8000 |
42.0 |
| 6000 |
32.0 |
| 4000 |
22.0 |
| 2000 |
11.4 |
After walkthough pulser amplitude setting set back to 70000, all other settings left unchanged
Far S2 and diode biases switched off. Preamp power off. Line valve and FCC valve closed. Turbos off. Manual and T1600 backing valves closed. Ecodry 1 and 2 off. Waited for turbos to spin down.
By 10:20 turbos had finished spinning, vented chamber ready to mount alpha source. |