September 23, 2015 Calibration

GlueX Calibration Meeting
Wednesday, September 9, 2015
11:00 am, EDT
JLab: TED 2561B

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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/ .

Agenda

1. Announcements
2. Summary of Detector Performance
3. Calibration Data Taking
4. Subdetector Reports
5. Simulations
6. Calibration Processing
7. AOB

Minutes

Attending: Sean (NU); Simon, Mark I., Kei, Elton, Justin, Eugene, Alex B., Nathan, Beni, Adesh, Matt S. (JLab); Curtis, Mike S., Will M., Naomi (CMU);

1. Announcements
   • There was a short meeting yesterday to discussing running this fall. Plans will be more clear by the Collaboration Meeting, but a certain number of standby shifts are being considered. It is not clear how much beam we will get (if any!).
   • The next offline monitoring run will be launched this weekend.
2. Summary of Detector Performance
   • Curtis said that Matt had sent him some new materials, and the beamline and online groups are working to update their sections.
   • Sean pointed out that efficiencies for several detectors need to be calculated.
3. Calibration Data Taking
   • Sean presented some preliminary numbers that he collected on how much more data is needed for a full, detailed calibration of all subdetectors. There was substantial discussion.
   • Calorimeter estimates were refined to ~50M pi0's for the BCAL and 10-50M for the FCAL. Sean will follow up about more detailed estimates.
   • About 350M cosmic triggers and the spring data sets were used to study the effects in the CDC, Simon and Mike seemed to think that would be enough. Another shift or so of beam data with magnetic field could be useful.
     • Naomi pointed out that the new fADC125 firmware should be ready on the order of the next couple of weeks. More cosmic data will need to be taken to calibrate the new firmware.
   • Sean will perform some calculations to estimate running times needed.
4. Subdetector Reports
5. Simulations
   • Mark submitted the first test jobs for the spring
   • Sean will put together files for future simulations together and iterate with Mark.
6. AOB