On 23/11/2018:
10:15 started pumping down chamber with Ecodry 2
RAL thresholds:
- First 4 RALs = 10mV
- 5th RAL = 17mV
- 6th RAL = 20mV
- 7th and 8th RALs ECL disconnected
- 9th - 16th RALs not in use (no near S2)
10:30 pressures ~ 1mBar, opened T1600 backing valve, Turbos switched on
10:35 pressures (mBar):
- TPU1 = 5.2e-5
- TPU2 = 6.4e-6
- TPD1 = 6.0e-6
- TPD2 = 8.7e-6
- CHUP = 2.3e-5
- CHDW = 5.5e-5
Biased detectors: Far S2 bias = -130V, leak I = 1.54uA. Diode bias = -70V, leak I = 0.02uA.
Replaced diode TFA, now using channel 4 on new TFA. Diode connected to 3rd ADC channel 16 (counting from 0)
Started pulser only run
Closed far S2 iris (82.5mm actuator setting). Set target ladder to blank 10mm target frame.
Disconnected vacuum gauges located below chamber on same side as target ladder is mounted - noise improved
Started pulser only run
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