PrimEx 2022

1 Sept

Ready to start. This is how to do the initialization (on one of the gluons):

source $HOSS_VENV/bin/activate.csh

python3 /group/halld/AIEC/utilities/CDC_control_ai/primex/AIEC_CDC.py -c /group/halld/AIEC/utilities/CDC_control_ai/primex/AIEC_CDC.cfg -I 15

(the arguments are minus capital i and then the lookback time in seconds)

The ideal gcf in the email didn't change. Did something fail with the init or is this still a bug in the email? The email bug was fixed ages ago. Probably Thomas over-wrote the file by accident when working on auto-off.

10:13 switched the AI on. The next run will be 110505. They are using a SOLID Be TARGET so Thomas made the auto-shut-off for empty target configurable and switched it off.

5 Sept

110583 was the last run before the HV was switched off.

11:25 - Shift log: All CDC and FDC HVs were turned off, and the solenoid current is being ramped down to 0A. 13:12 - Shift log: Beni called to inform us that he turned off the A.I. for the CDC since we turned the voltages off.

7 Sept

CDC & AI switched back on as the target filled and solenoid ramped [1]

110641 was the first run with the solenoid on and target full.

8 Sept

15:07 ish The plan for the rest of the run period is to use the liquid He target. Thomas enabled the auto-off if the target is not in state 3 (full & ready). This will set the HV to 2125V and switch off the AI's recommending (voltage-setting) when the target is in any other state. We will need to ask the shifters to switch the AI back on after empty target runs and not before the target is full again.

9 Sept

14:30 Naomi asked the shift crew to switch the AI off because the HV and pressure were moving in opposite directions, with no change in temperature. It was switched off after run 110686.

10 Sept

Sasha revealed his plans for empty target runs - Monday to Wednesday every week, to make best use of the accelerator's usual planned down-time.

20 Sept

Thomas re-initialized.

Initialization with model: /group/halld/AIEC/utilities/CDC_control_ai/primex/d_cdc_model_needs/saved_gpflow_model/saved_model.pb

InputDict: {'pressure': 100.061, 'temp': 298.84999999999997, 'current': 2.51501625, 'ideal_gcf': 0.141, 'confidence_threshold': 0.03, 'currentA1setV': '2125'}

OutputDict: {'raw_gcf': 0.14064093033868516, 'gcf': 0.14227172117567272, 'stdv': 0.006650096527178576, 'uq_pressure': 100.1532772, 'uq_hvbi': 2.4899867999999996, 'uq_temp': 298.922688}

10 Oct

System now configured to not "auto-off" instead if the UQ is used (rawf_gcf != gcf) it sets back to the baseline voltage (nominally 2125)

12 Oct

System should now be back on. Currently doing ET runs thus we shouldn't see any effect. Next run we'll see an effect will be the next non ET run post run 111026.