Difference between revisions of "WAC Notes July 18 2019"

Revision as of 19:34, 18 July 2019

Data was recovered from 3424, 3429, and 3430 current ramp runs with better beam current lower limit cut

Lots of production, only 1 major problem (lost run 3533 with 9k muls due to blinder fail from EPICs fastlogger and Compton IOC)

End of slug 7 -> Removed S0 -> should have a tiny ~1% effect on widths now

Died (blinder needs fixing): [https://hallaweb.jlab.org/parity/prex/onlinePlots/summary/2019-07-18/run3433_000/run3433_000_all.pdf 3433
Some PQB Calibration: 3448 - too short and noisy, and already labelled as calibration.
RQ2 dead and PQB commences at low current:
- 3456
- 3457
- 3458
- 3459
- 3460

In order to salvage current ramps and trips on large chunks of data and save time/save the regression/pedestal usefulness:

Change the lower limit current cut to be nominal-15 uA (35 for 50 uA, 55 for 70 uA)
Updating the event cuts to have nominal-15 uA beam current lower cut Starting at run 3456 (now) and also setting specifically for 3 70 uA current ramp runs 3424, 3429, 3430 (suspect Aq, but worth a try)
- 50 uA: prexCH_beamline_eventcuts.2948-.map -> prexCH_beamline_eventcuts.3456-.map (pending beam...)
  - 3451:
  - 3452:
  - 3453: Fixed
- 70 uA: prexCH_beamline_eventcuts.2948-.map -> prexCH_beamline_eventcuts.[3424,3429,3430].map
- Follow up - cut on current at nominal - 15 uA -> applied to current ramp runs
  - 3424: Cuts out half the prior data... marginal improvements
  - 3429: No effect on anything (since the beam was always at 60-70 anyway)
  - 3430: Cuts out 2/3rds of the prior passing data - fixes regression!

@@ Line 85: / Line 85: @@
 == Other Status Updates ==
-PQB runs need analyzing - see [https://logbooks.jlab.org/entry/3706339 notes]
+* PQB runs in the afternoon need more in depth (BPM cut) analyzing - see [https://logbooks.jlab.org/entry/3706339 notes]
+* [https://logbooks.jlab.org/entry/3706448 S0 Removed]
 [[Category:HOW TO]] [[Category:WAC]]