rem This is my best current HESSI background model including components rem from the Earth's atmosphere, cosmic sky and spacecraft (the latter is rem small). In addition is the model for the front-only background based rem on the Antarctic flight rather than simulations. The format of this rem file is GRAF; the next email will be the postscript file it produces. rem rem Bob: could you give me more information on the guard rings if you want rem them in the simulation? Also, the total amount of material between rem the side of a rear detector and empty space? (this simulation uses rem 2mm Al). Thanks. wysiwyg 1 tsize .12 xplim 2.0 9.0 yplim 1.5 7.0 title HESSI Background; Total and Fronts ylab Counts/cm^{2}/s/MeV xlab Energy, MeV xlim .04 10. 1 ylim 1e-2 100. 1 xaxis (D[2]+D[1])/2000. rem There are various normalizations for each column: yaxis (D[3]*2.276/4.007/1.8 + D[4]/1.8 + D[5]) /12./38.48 * 1000. rem 2.276/4.007 is a solid angle correction from the simulation. rem /12./38.48 gives per cm2. rem /1.8 corrects from 40 degree latitude of Ling 1975 to equator. rem *1000. goes from per keV to per MeV. rem columns: rem energy range Earth Spacecraft Cosmic Diff. 10.00000 15.0000 1.03632 3.76058E-02 3.52578 rem 15.0000 20.0000 1.13198 5.17080E-02 2.46638 rem changed last entry to 12.46 from 2.46 ras, 19 May 1995 15.0000 20.0000 1.13198 5.17080E-02 9.701 20.0000 25.0000 1.14792 5.17080E-02 22.5711 25.0000 30.0000 1.02037 3.13382e-02 28.2512 30.0000 35.0000 0.972543 4.38735E-02 28.4755 35.0000 40.0000 1.46679 6.11095E-02 24.8880 40.0000 45.0000 1.61028 7.52116E-02 23.7420 45.0000 50.0000 1.94509 8.61800E-02 22.3967 50.0000 55.0000 2.05669 0.119085 19.4072 55.0000 60.0000 2.71037 0.164525 18.1366 60.0000 65.0000 3.81046 0.158258 16.7664 65.0000 70.0000 3.52348 0.197431 15.5955 70.0000 75.0000 3.53942 0.183328 13.7519 75.0000 80.0000 3.90612 0.198997 12.8800 80.0000 85.0000 3.52348 0.246005 10.33886 85.0000 90.0000 3.90612 0.186462 9.79077 90.0000 95.0000 4.16121 0.194297 9.69112 95.0000 100.0000 4.00178 0.214667 7.92231 100.0000 150.000 3.42782 0.193200 4.93774 150.000 200.000 2.68326 0.151990 2.12756 200.000 250.000 2.19380 0.133814 1.15845 250.000 300.000 1.84146 0.120809 0.715000 300.000 350.000 1.59274 0.107333 0.445941 350.000 400.000 1.26909 8.55532E-02 0.321377 400.000 450.000 1.09212 7.45849E-02 0.174390 450.000 500.000 0.888044 6.26764E-02 0.156951 rem 500.000 550.000 1.73623 0.117362 0.134530 rem Include 511 keV line calculated from Antarctic flight: rem 500 509.5 0.888044 6.26764E-02 0.156951 509.5 512.5 0. 0. 10.2 512.5 550.0 0.837025 5.78189E-02 9.96516E-02 rem 550.000 600.000 0.837025 5.78189E-02 9.96516E-02 600.000 650.000 0.805138 5.12379E-02 6.97561E-02 650.000 700.000 0.607441 4.29333E-02 5.23171E-02 700.000 750.000 0.607441 4.21499E-02 3.48781E-02 750.000 800.000 0.492649 3.55688E-02 3.23868E-02 800.000 850.000 0.449602 3.40019E-02 4.48432E-02 850.000 900.000 0.403366 2.75776E-02 1.49477E-02 900.000 950.000 0.422498 2.69508E-02 1.74390E-02 950.000 1000.000 0.339593 2.66375E-02 1.49477E-02 1000.000 1500.00 0.274066 1.68443E-02 0. 1500.00 2000.00 0.158477 8.47698E-03 0. 2000.00 2500.00 0.111284 5.21781E-03 0. 2500.00 3000.00 8.84855E-02 3.76058E-03 0. 3000.00 3500.00 6.83969E-02 2.96146E-03 0. 3500.00 4000.00 5.77149E-02 1.95864E-03 0. 4000.00 4500.00 5.34102E-02 1.84895E-03 0. 4500.00 5000.00 4.25687E-02 1.56691E-03 0. 5000.00 5500.00 4.11338E-02 1.33187E-03 0. 5500.00 6000.00 3.73074E-02 1.15951E-03 0. 6000.00 6500.00 3.50753E-02 8.46131E-04 0. 6500.00 7000.00 3.22055E-02 6.42433E-04 0. 7000.00 7500.00 2.71037E-02 7.20778E-04 0. 7500.00 8000.00 2.53499E-02 6.58102E-04 0. 8000.00 8500.00 2.71037E-02 4.54404E-04 0. 8500.00 9000.00 2.64659E-02 5.17080E-04 0. 9000.00 9500.00 2.10452E-02 5.64087E-04 0. 9500.00 10000.00 1.89726E-02 4.70073E-04 0. xaxis D[1]/1000. yaxis D[2]*1000. rem Front segment background: from Antarctic flight; rem rebinning program has already converted to /cm2/s/keV and divided by rem 3.5 to go from Antarctic to equator. 23.680488 1.617529e-03 26.173171 2.151419e-03 28.665854 2.479153e-03 31.158537 2.072128e-03 33.651220 2.294142e-03 36.143902 2.050984e-03 38.636585 2.077414e-03 41.129268 1.850114e-03 43.621951 2.082700e-03 46.114634 1.939977e-03 48.607317 1.828970e-03 51.100000 1.638673e-03 53.592683 2.087986e-03 56.085366 1.966407e-03 58.578049 2.193707e-03 61.070732 2.098558e-03 63.563415 2.087986e-03 66.056098 2.373432e-03 68.548780 2.214851e-03 71.041463 1.908261e-03 73.534146 1.691533e-03 76.026829 2.013982e-03 78.519512 1.754966e-03 81.012195 1.643959e-03 83.504878 1.601670e-03 85.997561 1.559382e-03 88.490244 1.517094e-03 90.982927 1.517094e-03 93.475610 1.390229e-03 95.968293 1.162929e-03 98.460976 1.395515e-03 100.953659 1.310938e-03 103.446341 1.284508e-03 105.939024 1.284508e-03 108.431707 1.353227e-03 110.924390 1.363799e-03 113.417073 1.480091e-03 115.909756 1.458947e-03 118.402439 1.379657e-03 120.895122 1.406087e-03 123.387805 1.310938e-03 125.880488 1.231648e-03 128.373171 1.443089e-03 130.865854 1.379657e-03 133.358537 1.406087e-03 135.851220 1.268650e-03 138.343902 1.437803e-03 140.836585 1.464233e-03 143.329268 1.406087e-03 145.821951 1.300366e-03 148.314634 1.363799e-03 150.807317 1.295080e-03 153.300000 1.162929e-03 155.792683 1.252792e-03 158.285366 1.215789e-03 169.502439 1.216451e-03 189.443902 1.168876e-03 209.385366 1.100819e-03 229.326829 9.884892e-04 249.268293 9.415760e-04 269.209756 8.893762e-04 289.151220 7.605294e-04 309.092683 7.796914e-04 329.034146 7.459930e-04 348.975610 6.363072e-04