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25 // 25 //
26 #ifndef CCalDataSet_h 26 #ifndef CCalDataSet_h
27 #define CCalDataSet_h 27 #define CCalDataSet_h
28 28
29 #include "G4ParticleHPInterpolator.hh" 29 #include "G4ParticleHPInterpolator.hh"
30 #include <vector> 30 #include <vector>
31 31
32 // by JPW, working, but to be cleaned up. @@@@ 32 // by JPW, working, but to be cleaned up. @@@@
33 33
34 class CCalDataSet 34 class CCalDataSet
35 { 35 {
36 public: 36 public:
37 37
38 void insert(G4double anEnergy, G4double aXse 38 void insert(G4double anEnergy, G4double aXsection)
39 { 39 {
40 pair<G4double, G4double> aPoint(anEnergy, 40 pair<G4double, G4double> aPoint(anEnergy, aXsection);
41 theData.push_back(aPoint); 41 theData.push_back(aPoint);
42 } 42 }
43 43
44 double getCrossSection(G4double anEnergy) 44 double getCrossSection(G4double anEnergy)
45 { 45 {
46 G4double result; 46 G4double result;
47 if(anEnergy < theData[0].first) 47 if(anEnergy < theData[0].first)
48 { 48 {
49 result = 0; 49 result = 0;
50 } 50 }
51 else 51 else
52 { 52 {
53 G4double x1,x2; 53 G4double x1,x2;
54 G4double y1,y2; 54 G4double y1,y2;
55 if(anEnergy > theData[theData.size()-1]. 55 if(anEnergy > theData[theData.size()-1].second)
56 { 56 {
57 // extrapolation 57 // extrapolation
58 G4int n=theData.size(); 58 G4int n=theData.size();
59 x1 = theData[n-1].first; 59 x1 = theData[n-1].first;
60 y1 = theData[n-1].second; 60 y1 = theData[n-1].second;
61 x2 = theData[n-2].first; 61 x2 = theData[n-2].first;
62 y2 = theData[n-2].second; 62 y2 = theData[n-2].second;
63 } 63 }
64 else 64 else
65 { 65 {
66 // linear search and interpolation 66 // linear search and interpolation
67 unsigned int i; 67 unsigned int i;
68 for(i=0; i<theData.size(); ++i) 68 for(i=0; i<theData.size(); ++i)
69 { 69 {
70 if(theData[i].first>anEnergy) break; 70 if(theData[i].first>anEnergy) break;
71 } 71 }
72 x1 = theData[i-1].first; 72 x1 = theData[i-1].first;
73 y1 = theData[i-1].second; 73 y1 = theData[i-1].second;
74 x2 = theData[i].first; 74 x2 = theData[i].first;
75 y2 = theData[i].second; 75 y2 = theData[i].second;
76 } 76 }
77 // interpolate logarithmic in energy and 77 // interpolate logarithmic in energy and linear in cross-section
78 result = theInterpolator.Interpolate(LOG 78 result = theInterpolator.Interpolate(LOGLIN, anEnergy, x1,x2,y1,y2);
79 } 79 }
80 return result*barn; 80 return result*barn;
81 } 81 }
82 82
83 private: 83 private:
84 84
85 G4ParticleHPInterpolator theInterpolator; 85 G4ParticleHPInterpolator theInterpolator;
86 86
87 private: 87 private:
88 88
89 vector<pair<G4double, G4double> > theData; 89 vector<pair<G4double, G4double> > theData;
90 }; 90 };
91 #endif 91 #endif
92 92