March 25, 2015 Calibration
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Contents
GlueX Calibration Meeting
Wednesday, March 25, 2015
11:00 am, EDT
JLab: CEBAF Center, F326
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Agenda
- Announcements
- Subdetector Reports
- Detector Matching (Paul): Run Browser
- Spring Calibration Plans
- Simulations
- AOT
Minutes
Attending: Sean (NU); Simon, Kei, Paul, Lubomir, Will M., Alex B., Justin, Beni, Mike S., Mark D., Elton (JLab); Naomi (CMU); Noemi (Regina)
Subdetector Reports
- FCAL - No news. Sean will follow up and talk to Matt & John Z. about their skimming needs
- BCAL - When Will looks at 900 MeV showers, he gets a pi0 resolution of 9.5 MeV, although it's statistics limited. Mark D. is looking at the corrections in more detail.
- CDC -
Detector Matching
Spring Calibration Plans
Simulations
A few things still need to be looked at before launching a new set of simulations. Sean will organize the next launch when he is at JLab in April.
Proposed Spring Plans
- Short-term (few days)
- Realign detector times
- Compare detector performance to fall run
- Medium-term (~1-2 month)
- Check stability of existing calibrations
- Improve timing calibrations
- Continue TDC commissioning
- RF time calibration
- Refine timewalk, etc. corrections
- Monitor dependence on conditions (gas mix, temperature, etc.)
- Calculate luminosity/normalization factor
- Using PS - Kei and Simon will talk to Alex about this
- Think up alternate method
- Long-term (summer)
- Improve FCAL/BCAL calibrations
- Improve detector alignment
- Update digitization and smearing in simulation
- Update PID calculations (requires understanding uncertainties)
- Calculate luminosity/normalization factor using physics channel (e.g. rho photoproduction)
- Requires understanding acceptances, efficiencies
Slides
Talks can be deposited in the directory /group/halld/www/halldweb/html/talks/2015
on the JLab CUE. This directory is accessible from the web at https://halldweb.jlab.org/talks/2015/ .