Difference between revisions of "June 29, 2022"
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= Special Requests = | = Special Requests = | ||
| − | + | * Contact Brad S. if rotating SHMS at a decent hour | |
Latest revision as of 09:55, 29 June 2022
Current Status
- Accelerator status:
- RF recovery and access to tunnel made yesterday
- After the down we could only get to 25 uA (BLM trips on 8E02 which is just before the BSY)
- Down for the day as more work is done to get us to higher current (RF restoration, try magnetic extraction, look at 8E02 BLM on scope,......)
- Experiment status:
- pionLT continues to make progress on run plan, though we are still behind schedule, unless Ops is able to deliver 80 uA at >50% efficiency
- On page 91 of run plan 10% of LD2 data collected. Dummy data taken for this setting on OWL. Current Setting: Q2=3.85, W=3.07, x=0.31, high ε data taking.
- Q2 power supply was repaired yesterday
- Drift chamber noise is absent in latest runs
Current Run Plan
Notices in Effect for Shift Crew
- Please pro-rate ABU for max current limit in run plan (uA) in beam time accounting. For example, if we receive 15 uA instead of the max_current_limit in the run plan, then the ABU should be: ABU_prorated = 15/(max current limit) * ABU
- Check the HMS/SHMS rates for when production starts, since for Heep coin. production SHMS saw higher rates. Make sure shift crew takes snapshot of scalers at every setting
- When analyzing LD2 or Al dummy or LH2, please leave the target_mass_amu in the standard.kinematics as that of the proton, but when analyzing the data with the pionLT script, specify the target used, as different targets will have different ranges in the cuts when integrating the missing mass peak. Refer to log entry: https://logbooks.jlab.org/entry/4005387 These instructions are given in the pionLT run plan.
- Keep on eye on HMS DC chamber wire maps. See current issues
- Contact Brad S. before next SHMS spectrometer rotation unless (OWL shift)
Current Issues
- BCM gains and offsets need updating https://logbooks.jlab.org/entry/4007884 https://logbooks.jlab.org/entry/4008646
- Partially resolved: HMS DC Noise https://logbooks.jlab.org/entry/4008620
Planned Accesses to the Hall
Planned Accelerator Configuration Changes
Special Requests
- Contact Brad S. if rotating SHMS at a decent hour
