Difference between revisions of "GlueX Offline Meeting, November 16, 2011"
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* There is a difference between the dE/dx in the CDC versus that in the FDC. Mark thought that it would be interesting to see if it could be accounted for by the different gas mixtures set in the Monte Carlo for the two systems. | * There is a difference between the dE/dx in the CDC versus that in the FDC. Mark thought that it would be interesting to see if it could be accounted for by the different gas mixtures set in the Monte Carlo for the two systems. | ||
* Paul intends to run more statistics to fill out the variety of cases he has studied. | * Paul intends to run more statistics to fill out the variety of cases he has studied. | ||
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+ | ==CCDB Beta Release Report== | ||
+ | |||
+ | Dmitry [??? released a beta version] of the calibration and conditions database (CCDB) last week???. |
Revision as of 22:16, 16 November 2011
GlueX Offline Software Meeting
Wednesday, November 16, 2011
1:30 pm EDT
JLab: CEBAF Center F326
Contents
Agenda
- Announcements
- Review of minutes from the last meeting: all
- Reconstruction sub-group reports
- Calorimeters: Matt
- Tracking: Simon
- PID: DC dE/dx: Paul M.
- CCDB beta release report: Dmitry
- Action Item Review
- Review of recent repository activity: all
Communication Information
Video Conferencing
- ESNet: 8542553
- EVO:
- Meeting URL: http://evo.caltech.edu/evoNext/koala.jnlp?meeting=ete8eavBvvanaaIiaiIt
- Phone Bridge ID: 11 6471
Slides
Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2011-4Q
on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2011-4Q/ . You have to be a member of the "halld" Unix group to put files in the directory.
Minutes
Present:
- CMU: Will Levine, Paul Mattione, Curtis Meyer
- FSU: Nathan Sparks
- IU: Ryan Mitchell, Matt Shepherd
- JLab: Mark Ito (chair), David Lawrence, Dmitry Romanov, Simon Taylor, Elliott Wolin
Reconstruction sub-group reports
Calorimeters
Matt gave the report.
- Will has checked in changes to BCAL code
- When there is a demonstration of improvement with the new code versus the legacy KLOE code, the new code will be made the default.
Tracking
Simon and Will gave reports.
Simon reminded us that problems have been reported with the proton reconstruction efficiency in events. A couple of rounds of improvements have been tried, with modest gains. Work on this continues.
In the light of recent improvements, Will has started looking at reconstruction efficiency and kinematic fitting for all-charged-final-state events. See his wiki page for details. He is seeing relatively high reconstruction efficiency, but not so good efficiency for passing a confidence level cut. Several people suggested restructuring the study to separate the effects of reconstruction and those of the calculation of errors.
PID
Paul gave the report.
Paul has been doing studies of dE/dx in the tracking chambers. Recall that this component of particle identification has been dropped in the current version on the trunk. See his wiki page for details. He showed plots of dE/dx separately for the CDC and FDC, both means and sigma's for pions up to 9 GeV.
- Matt pointed out that the action for us in the region below about 1 GeV where these quantities are varying rapidly. He suggested that Paul concentrate his efforts there.
- There is a difference between the dE/dx in the CDC versus that in the FDC. Mark thought that it would be interesting to see if it could be accounted for by the different gas mixtures set in the Monte Carlo for the two systems.
- Paul intends to run more statistics to fill out the variety of cases he has studied.
CCDB Beta Release Report
Dmitry [??? released a beta version] of the calibration and conditions database (CCDB) last week???.