September 10, 2014 Calibration

GlueX Calibration Meeting
Wednesday, September 10, 2014
11:00 am, EDT
JLab: CEBAF Center, F326

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Agenda

1. Announcements
2. Collaboration Meeting
3. Commissioning Planning updates
   1. CDC
   2. FDC
   3. FCAL
   4. BCAL
   5. TOF
   6. Start Counter
   7. Trigger
4. Fall 2014 Commissioning Simulation updates
5. AOB

Minutes

• Curtis reported that he had tried to normalize the FDC rates from Sean's EM background studies to those that Sascha did in 2010. By normalizing the 1200A point in both, the rates from currents of about 200A up to 1500A all fell roughly on the same line. The following file plots the factor by which the EM rate increases against the decrease in current in the solenoid in 100A units. Thus, the point at x=0 and y=1 corresponds to 1500A current and a scale factor of 1.00. The point at x=13 and y=3.75 corresponds to a solenoid current of 200A and a scale factor of 3.75. The slope of the curve suggests that the EM rate increases by a factor of about 1.2 for each step down in solenoid current of 100A.

File:Solenoid Current.pdf