[819] | 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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