Difference between revisions of "HRS Detector Calibrations"

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<ol>
 
<ol>
 
<li> Check the timing and calibration constants (shower ADC gains, pedestals, timing offsets, pulse height corrections, attenuation lengths, efficiencies, position dependencies).
 
<li> Check the timing and calibration constants (shower ADC gains, pedestals, timing offsets, pulse height corrections, attenuation lengths, efficiencies, position dependencies).
<li> VDCs and Straw Chambers (Yang Wang)
+
<li> VDCs and Straw Chambers (Yang Wang)<br>
     * Fit for new time-to-distance map
+
     * Fit for new time-to-distance map<br>
     * Look at drift time spectra, is the shape reasonable?  in the right time range?
+
     * Look at drift time spectra, is the shape reasonable?  in the right time range?<br>
     * Look at focal plane distributions.
+
     * Look at focal plane distributions.<br>
     * Check fiducial tracking efficiency, is it > 95%, If not, then check TDC windows and tracking parameters.
+
     * Check fiducial tracking efficiency, is it > 95%, If not, then check TDC windows and tracking parameters.<br>
 
<li>  
 
<li>  
 
<li>  
 
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Revision as of 13:40, 14 October 2014

  • Use 12C "white" spectra to get maximum coverage of planes, take 250K events.
Ebeam [GeV] P0 [GeV/c] θe [deg] Collimator Target Fast Raster
X x Y
Beam Current Trigger
7.3 3.056 19.0 None Optics Carbon 1 mm x 1 mm 20μA S0&&S2m
  1. Check the timing and calibration constants (shower ADC gains, pedestals, timing offsets, pulse height corrections, attenuation lengths, efficiencies, position dependencies).
  2. VDCs and Straw Chambers (Yang Wang)
    * Fit for new time-to-distance map
    * Look at drift time spectra, is the shape reasonable? in the right time range?
    * Look at focal plane distributions.
    * Check fiducial tracking efficiency, is it > 95%, If not, then check TDC windows and tracking parameters.