Conference Call, June 15, 2007

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Hi Alex:

this is a reminder for our teleconference regarding the BCAL gain analysis on Friday June 15 at 12:00 EST.


Call IU at (812) 856-5808

Discussion Points

  1. MC Cosmic Simulations: Blake's 4 GeV cosmic muon simulations incident on the front face and top of the module.
  2. Beam Test Gain Matching Plots: Blake's gain matching plots.
  3. E-log entries on HV-driven gain matching: see E-log entry 76 for the most updated HV settings; earlier there were problems with the north 15 (see Elog entries 6, 8, 9, 57); see 25, 26, 27, 28, 31, 52, 54, 55, 57, 74 for the progress in HV adjustment and channel readout. After Elog 76 the only time that I remember that the HV was changed was after Run 2407 for South 7 (from 2096->1900 V) to account for the saturation of the PMT at forward angles and near the end of the module, and this was restored after Run 2423.
  4. Cosmic paddle counter information: The paddle counters were placed as follows: the top one was about 1 inch above the top side of the BCAL and the bottom one maybe 2 inches below (from memory). They were horizontal (ie parallel to the floor). The counters were 10cm wide and ~40 cm long, and ~1/4" thick. Unfortunately we did not take and pictures of the setup. The 10cm long side was the one perpendicular to the BCAL long axis.
  5. MC gain matching: Blake's MC method of gain matching.
  6. Alex's analysis documents
    1. Understanding the BCAL Energy and Calibration (Media:BCAL_res_cal.pdf)
    2. Understanding the BCAL Energy and Calibration - Installment II (Media:BCAL_res_cal2.pdf)
    3. Understanding the BCAL Energy per Layer - Installment III (Media:BCAL_res_cal3.pdf)
    4. Understanding the BCAL Energy per Layer - Installment IV (Media:BCAL_res_cal4.pdf)
  7. Other stuff?