[Clas12_rgb] Timelines to check! and RGB meeting tomorrow at 8:30AM - agenda

Marco Mirazita Marco.Mirazita at lnf.infn.it
Mon Jul 29 06:25:52 EDT 2019


Dear Silvia,
I have completed the study of the RICH timing by looking at the 
monitoring data (180 runs).
My conclusions are:
- runs from 6156 to 6170 and from 6420 to 6597: we have an overall shift 
of about 9 ns with respect to the data we used to calculate our time 
calibration constants. Apart from this, the calibration looks good, but 
the real check can be done only by looking at the full runs.
- for runs from 6189 to 6399 the shift is about 11 ns
- for run 6386 the shift is about 13 ns
- run 6293 has all the histograms empty, It seems this run has empty 
histograms also for other detectors.
- runs 6333, 6337,6339, 6341 have two peaks, indicating an RF correction 
problem: we see a similar issue in rg-A that was solved in the latest 
cooking v15.
I have updated the last Friday meeting wiki page with all the plots.

Best regards,
Marco




Il 2019-07-25 11:44 silvia at jlab.org ha scritto:
> Dear all,
> Zhiwen has completed pass0/v9 (hipo4 - COATJAVA 6b.2.0, ten files/run),
> and Yordanka and Sangbaek have completed the monitoring and timelines.
> 
> Detector experts are kindly requested to please look at the timelines 
> and
> inform us of any problems they see, and needs for specific runs to be
> cooked for calibration. The link to the timelines is:
> 
> https://clas12mon.jlab.org/rgb/pass0/v9/tlsummary/
> 
> I can see from a quick glance that further calibrations and adjustments
> are clearly necessary for various subsystems.
> 
> This will be therefore one of the items in the agenda of tomorrow's RGB
> meeting:
> Time: 8:30AM JLab time
> Location: JLab room F224-225
> BlueJeans ID: 237353330
> 
> Tentative agenda:
> 
> - timelines from pass0/v9, calibration needs, and plans for further 
> pass
> 
> - BAND update on low-energy run needs for the fall
> 
> - RC schedule for the fall
> 
> - Any other items are welcome
> 
> Best regards,
> Silvia
> 
> 
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