1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // neutron_hp -- source file |
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27 | // J.P. Wellisch, Nov-1996 |
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28 | // A prototype of the low energy neutron transport model. |
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29 | // |
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30 | // 13-Jan-06 fix in Sample by T. Koi |
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31 | // |
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32 | #include "G4NeutronHPPartial.hh" |
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33 | #include "G4NeutronHPInterpolator.hh" |
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34 | #include "Randomize.hh" |
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35 | |
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36 | G4NeutronHPVector * G4NeutronHPPartial::GetY(G4double e1) |
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37 | { |
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38 | G4NeutronHPVector * aBuffer = new G4NeutronHPVector(); |
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39 | G4int i; |
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40 | if(nData==1) |
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41 | { |
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42 | for(i=0; i<data[0].GetVectorLength(); i++) |
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43 | { |
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44 | aBuffer->SetInterpolationManager(data[0].GetInterpolationManager()); |
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45 | aBuffer->SetData(i , data[0].GetX(i), data[0].GetY(i)); |
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46 | } |
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47 | return aBuffer; |
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48 | } |
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49 | for (i=0; i<nData; i++) |
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50 | { |
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51 | if(X[i]>e1) break; |
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52 | } |
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53 | if(i==nData) i--; |
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54 | if(0==i) i=1; |
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55 | G4double x1,x2,y1,y2,y; |
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56 | G4int i1=0, ib=0; |
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57 | G4double E1 = X[i-1]; |
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58 | G4double E2 = X[i]; |
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59 | for(G4int ii=0; ii<data[i].GetVectorLength(); ii++) |
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60 | { |
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61 | x1 = data[i-1].GetX(std::min(i1, data[i-1].GetVectorLength()-1)); |
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62 | x2 = data[i].GetX(ii); |
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63 | if(x1<x2&&i1<data[i-1].GetVectorLength()) |
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64 | { |
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65 | y1 = data[i-1].GetY(i1); |
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66 | y2 = data[i].GetY(x1); |
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67 | if(E2-E1!=0) |
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68 | { |
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69 | y = theInt.Interpolate(theManager.GetScheme(i), e1, E1, E2, y1, y2); |
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70 | } |
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71 | else |
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72 | { |
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73 | y = 0.5*(y1+y2); |
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74 | } |
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75 | aBuffer->SetData(ib, x1, y); |
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76 | aBuffer->SetScheme(ib++, data[i-1].GetScheme(i1)); |
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77 | i1++; |
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78 | if(x2-x1>0.001*x1) |
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79 | { |
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80 | ii--; |
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81 | } |
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82 | } |
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83 | else |
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84 | { |
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85 | y1 = data[i-1].GetY(x2); |
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86 | y2 = data[i].GetY(ii); |
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87 | if(E2-E1!=0) |
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88 | { |
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89 | y = theInt.Interpolate(theManager.GetScheme(i), e1, E1, E2, y1, y2); |
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90 | } |
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91 | else |
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92 | { |
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93 | y = 0.5*(y1+y2); |
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94 | } |
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95 | aBuffer->SetData(ib, x2, y); |
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96 | aBuffer->SetScheme(ib++, data[i].GetScheme(ii)); |
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97 | if(x1-x2<0.001*x2) i1++; |
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98 | } |
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99 | } |
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100 | return aBuffer; |
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101 | } |
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102 | |
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103 | G4double G4NeutronHPPartial::Sample(G4double x) |
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104 | { |
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105 | G4int i; |
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106 | for (i=0; i<nData; i++) |
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107 | { |
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108 | if(x<X[i]) break; |
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109 | } |
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110 | G4NeutronHPVector theBuff; |
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111 | if(i==0) |
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112 | { |
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113 | theBuff.SetInterpolationManager(data[0].GetInterpolationManager()); |
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114 | for(G4int ii=0;ii<GetNEntries(0);ii++) |
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115 | { |
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116 | theBuff.SetX(ii, GetX(0,ii)); |
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117 | theBuff.SetY(ii, GetY(0,ii)); |
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118 | } |
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119 | } |
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120 | //else if(i==nData-1) this line will be delete |
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121 | else if ( i == nData ) |
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122 | { |
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123 | for(i=0;i<GetNEntries(nData-1);i++) |
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124 | { |
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125 | theBuff.SetX(i, GetX(nData-1,i)); |
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126 | theBuff.SetY(i, GetY(nData-1,i)); |
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127 | theBuff.SetInterpolationManager(data[nData-1].GetInterpolationManager()); |
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128 | } |
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129 | } |
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130 | else |
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131 | { |
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132 | G4int low = i-1; |
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133 | G4int high = low+1; |
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134 | G4double x1,x2,y1,y2; |
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135 | G4int i1=0, i2=0, ii=0; |
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136 | x1 = X[low]; |
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137 | x2 = X[high]; |
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138 | while(i1<GetNEntries(low)||i2<GetNEntries(high)) |
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139 | { |
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140 | if( (GetX(low,i1)<GetX(high,i2) && i1<GetNEntries(low)) |
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141 | ||(i2==GetNEntries(high)) ) |
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142 | { |
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143 | theBuff.SetX(ii, GetX(low,i1)); |
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144 | y1 = GetY(low,i1); |
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145 | y2 = GetY(high, GetX(low,i1)); //prob at ident theta |
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146 | theBuff.SetY(ii, theInt.Interpolate(theManager.GetScheme(high), |
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147 | x, x1, x2, y1, y2)); //energy interpol |
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148 | theBuff.SetScheme(ii, data[low].GetScheme(i1)); |
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149 | if(std::abs(GetX(low,i1)-GetX(high,i2))<0.001) i2++; |
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150 | i1++; |
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151 | ii++; |
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152 | } |
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153 | else |
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154 | { |
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155 | theBuff.SetX(ii, GetX(high,i2)); |
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156 | y1 = GetY(high,i2); |
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157 | y2 = GetY(low, GetX(high,i2)); //prob at ident theta |
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158 | theBuff.SetY(ii, theInt.Interpolate(theManager.GetScheme(high), |
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159 | x, x1, x2, y1, y2)); //energy interpol |
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160 | theBuff.SetScheme(ii, data[high].GetScheme(i2)); |
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161 | if(std::abs(GetX(low,i1)-GetX(high,i2))<0.001) i1++; |
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162 | i2++; |
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163 | ii++; |
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164 | } |
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165 | } |
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166 | } |
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167 | //buff is full, now sample. |
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168 | return theBuff.Sample(); |
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169 | } |
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