;Richard,

;Here's an effective area measure to tide you over until Said gets in to do the
;real thing (which should be soon).

;These are its shortcomings:
;1) No passive material in the simulation at all, just the detectors.
;2) Fronts and rears are combined together, so this is for the whole array
;   (as was the background).
;3) This was not done with GEANT but with my homebrew code, and I know the
;   pair production cross sections are a little low, particularly between
;   1 and 3 MeV.

;The columns are input energy, effective area for photopeak, and effective area
;for any interaction.

;enjoy,
;David

     20.0000    331.398    349.387
     30.0000    352.807    360.673
     40.0000    355.885    360.605
     50.0000    356.569    359.921
     75.0000    354.449    364.640
    100.0000    333.518    350.687
     150.000    309.715    350.003
     200.000    284.134    348.430
     300.000    238.990    346.788
     400.000    203.490    348.088
     500.000    191.246    352.602
     650.000    153.832    333.997
     800.000    143.572    335.434
    1000.000    122.573    324.558
     1200.00    110.603    311.699
     1500.00    99.4536    308.826
     2000.00    79.5492    286.528
     4000.00    44.4600    266.692
     8000.00    21.5460    256.842

;window designs 03-june-1997       frac  da1(mils) db1(mils) df1(mils) da2(mils) db2(mils)
noshutter                        0.995  20.00      0.00       0.00      0.00      30.00
main                             0.97   10.00      20.00      0.00      0.00      20.00
shutter+main                     0.995  100.00    20.00       0.00      3.00      100.00