Difference between revisions of "HRS Detector Calibrations"

From Hall A Wiki
Jump to: navigation, search
(New page: <table border="1" style="width:80%"> <tr> <td>E<SUB>beam</SUB> [GeV]</td> <td>P<sub>0</sub> [GeV/c]</td> <td>θ<SUB>e</SUB> [deg]</td> <td>Collimator</td> <td>...)
 
Line 23: Line 23:
 
</table>
 
</table>
 
<ol>
 
<ol>
<li>
+
<li> Check the timing and calibration constants (shower ADC gains, pedestals, timing offsets, pulse height corrections, attenuation lengths, efficiencies, position dependencies).
<li>  
+
<li> 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.
 
<li>  
 
<li>  
 
<li>  
 
<li>  

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.