PMTM: PMT Modified collection efficiency and concentrator petal reflectivity

 
Contact:  GD Orebi Gann, Oxford.
 
Revision History:-
================
 
 
5.01  GD Orebi Gann    First version.
 

 
Titles Files
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pmt_angular.dat
 
 
Verification
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Description
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   This bank controls the PMT angular response.  The modified collection efficiency of the
   PMT and the reflectivity of the concentrator petals can be varied.
 
Data Words
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        Fixed length Database Header.  See titles_dbhdr.html
 
       I = integer, F = floating point.
 
         KPMTM...        Mnemonic bank address relative to start of
                         user data.
 
  1    F  _A1            a1 coefficient in the formula for modified collection efficiency
  2    F  _A2            a2 coefficient in the formula for modified collection efficiency
  3    F  _A3            a3 coefficient in the formula for modified collection efficiency
  4    F  _B1            b1 coefficient in the formula for modified collection efficiency
  5    F  _B2            b2 coefficient in the formula for modified collection efficiency
  6    F  _REFLEC        Relative reflectivity of concentrator petals; see note 1
  7    F  _LINEAR        Linear drop in reflectivity of concentrator petals; see note 2

 
Notes
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1)  This reflectivity is a uniform drop over the petals.  For example, if set to 0.9, the
    reflectivity is 90% of what it otherwise was.

2)  This is a linear drop in reflectivity along the length of the petals.  For example, if
    set to 0.95, the reflectivity at the bottom will be 95% of that at the top, with a smooth
    linear gradient between the two.