HallC BCMs

Hall C BCMS

Experts:  Dave Mack, Steve Wood

• Hall C BCM Temperature Monitoring How-to
• Ancient (2003) documentation: http://hallcweb.jlab.org/document/howtos/bcm_calibration.pdf

BCM calibration procedure

• This is driven by MCC, but the shift crew must follow along and ensure that the DAQs are running and that the procedure is followed correctly.
• PDF version is duplicated here: Media:BCMCalibrationv9.pdf (Updated Feb 1, 2020)

NOTE: The most current version is on the DocDB here: https://hallcweb.jlab.org/doc-private/ShowDocument?docid=957

BCM Calibrations and EPICS information

BCM calibration/analysis from Feb 20, 2020 [1]

• Full details: https://hallcweb.jlab.org/doc-private/ShowDocument?docid=1040

Coefficients as of Sep 28, 2018 [2]

• ibcm1
  • field(INPA, "253061.1") # Was 253035
  • field(INPB, "0.0001753829") # Was 0.00016329
• ibcm2
  • field(INPA, "250361.6") # Was 250360
  • field(INPB, "0.0001811995") # Was 0.00017064
• iunser
  • field(INPA, "327953") # Was 348695
  • field(INPB, "0.000250")
• ibcm3H04B
  • Was called ibcm17 - "Hall C BCM 17" (before 9/28/2018)
  • field(INPA, "2096.3")
  • field(INPB, "0.0004832374")
• ibcm3H04A
  • Was called ibcm4a - "Hall C BCM 4A" (before 9/28/2018)
  • field(INPA, "8660.4")
  • field(INPB, "0.000109376")
• ibcm3H04C
  • Was called ibcm4b - "Hall C BCM 4B" (before 9/28/2018)
  • field(INPA, "4313.13")
  • field(INPB, "0.0001593386")