Difference between revisions of "WAC Notes July 25 2019"

Revision as of 22:40, 26 July 2019

Start Slug 13, IHWP OUT Flip Right, FFB on always Since we are using bcm_dg_ds, the width in the bcm is ~1.5X of what we used to have with bcm_an_ds3

Good - run3622
Good - run3623
Good - run3624
Suspicious - run3625
- Mini-run 0 has too large detector widths->Fixed after bad_event_cut
- BPM fluctuating
Good - run3626
Suspicious - run3628
Suspicious - run3629
- Aq mean is too large
- Test run HALOG
Suspicious - run3630
- Detector widths are fluctuating between mini-runs.
Suspicious - run3631
- Detector widths become worse
- Beam position change
- Beam current fluctuating
- Normalized detector yield is decreasing over time
Suspicious - run3632
- Regressed detector widths are even higher
- Normalized detector yield is decreasing over time
- Regressed detectors are correlated
Suspicious - run3633
- Normalized detector yield is increasing over time (opposite to run3632)
Suspicious - run3634
Suspicious - run3635
Suspicious - run3636
- Long beam trip during the run
- Normalized detector yield is decreasing again

There were many pedestal and event cut problems. From now on, when an event cut isn't absolutely necessary it should be removed - see japan source code for reference of cuts here
The BCM appears to be falling apart. We are fixing it and running slug 12 on BCM DG DS in the meantime.
BPM 4ec had intermittant problems (iocse10 has issues) and so we are regressing with 4e again. BPM 11X is ok and stays in regression.

@@ Line 22: / Line 22: @@
 Start [https://hallaweb.jlab.org/parity/prex/onlinePlots/slug/slug_list/slug13-Left/y_postPanPlots_slug13-Left.pdf Slug 13, IHWP OUT Flip Right, FFB on always]
+'''Since we are using bcm_dg_ds, the width in the bcm is ~1.5X of what we used to have with bcm_an_ds3'''
 * Good - [https://hallaweb.jlab.org/parity/prex/onlinePlots/index.php?run=summary/all/run3622_000 run3622]
 * Good - [https://hallaweb.jlab.org/parity/prex/onlinePlots/index.php?run=summary/all/run3623_000 run3623]