Difference between revisions of "July 2, 2014 Calibration"
From GlueXWiki
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# Announcements | # Announcements | ||
− | #* Mark has tagged [https://phys12svn.jlab.org/repos/tags/ccdb_1.02 CCDB v1.02]. This primarily fixes bugs related to the | + | #* Mark I. has tagged [https://phys12svn.jlab.org/repos/tags/ccdb_1.02 CCDB v1.02]. This primarily fixes bugs related to when a primary variation for a JANA program is specified on the command line (e.g. JANA_CALIB_CONTEXT="variation=mc"). |
# Tracking | # Tracking | ||
#* Naomi put together [http://argus.phys.uregina.ca/cgi-bin/private/DocDB/ShowDocument?docid=2513 this document] which describes her investigations on correcting for B-field variations. She also redid her studies of radial B-field variation with finer resolution and found a maximum difference of 3 ns at maximum drift time. | #* Naomi put together [http://argus.phys.uregina.ca/cgi-bin/private/DocDB/ShowDocument?docid=2513 this document] which describes her investigations on correcting for B-field variations. She also redid her studies of radial B-field variation with finer resolution and found a maximum difference of 3 ns at maximum drift time. | ||
#* The current time-to-distance tables for the CDC are generated assuming a magnetic field. Simon is being provided with tables corresponding to zero magnetic field. It was noted that the gas mixture in the CDC has a temperature around 296K. | #* The current time-to-distance tables for the CDC are generated assuming a magnetic field. Simon is being provided with tables corresponding to zero magnetic field. It was noted that the gas mixture in the CDC has a temperature around 296K. | ||
#* | #* | ||
+ | #* | ||
+ | #* There was also a | ||
# Calorimetry | # Calorimetry | ||
+ | #* Zisis (via email) reported on a discussion during the BCAL Commissioning meeting. The current plan to to have the Regina students at JLab begin analyzing the BCAL LED pulser & cosmic data that they are taking, under the supervision of Elton and Mark D. These data will be compared against the standard HDGeant simulations, and a standalone BCAL simulation which contains a more detailed geometry. | ||
# Other systems | # Other systems | ||
+ | #* Richard J. (via email) has put constants in the CCDB for the energy ranges that correspond to hits in the tagger microscope & fixed array, based on an analysis by Dan Sober. He is updating the simulation to use these values. | ||
+ | # Simulations, etc. | ||
+ | #* Mark I. reminded us that we should be using different variations as we update the values of constants, e.g., if they correspond to calibrations for data or MC. |
Revision as of 16:54, 2 July 2014
GlueX Calibration Meeting
Wednesday, July 2, 2014
11:00 am, EDT
JLab: CEBAF Center, F326
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Agenda
- Announcements
- Status Update
- Tracking
- Cosmics Running
- CDC radial field drift-time diffs
- CDC drift-time & B field doc
- Calorimetry
- Other systems
- Simulations and Calibrations
Minutes
- Announcements
- Mark I. has tagged CCDB v1.02. This primarily fixes bugs related to when a primary variation for a JANA program is specified on the command line (e.g. JANA_CALIB_CONTEXT="variation=mc").
- Tracking
- Naomi put together this document which describes her investigations on correcting for B-field variations. She also redid her studies of radial B-field variation with finer resolution and found a maximum difference of 3 ns at maximum drift time.
- The current time-to-distance tables for the CDC are generated assuming a magnetic field. Simon is being provided with tables corresponding to zero magnetic field. It was noted that the gas mixture in the CDC has a temperature around 296K.
- There was also a
- Calorimetry
- Zisis (via email) reported on a discussion during the BCAL Commissioning meeting. The current plan to to have the Regina students at JLab begin analyzing the BCAL LED pulser & cosmic data that they are taking, under the supervision of Elton and Mark D. These data will be compared against the standard HDGeant simulations, and a standalone BCAL simulation which contains a more detailed geometry.
- Other systems
- Richard J. (via email) has put constants in the CCDB for the energy ranges that correspond to hits in the tagger microscope & fixed array, based on an analysis by Dan Sober. He is updating the simulation to use these values.
- Simulations, etc.
- Mark I. reminded us that we should be using different variations as we update the values of constants, e.g., if they correspond to calibrations for data or MC.