xray_fluorescence/src/XrayFluoNormalization.cc

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0025 //
0026 //
0027 //
0028 // Author: Elena Guardincerri (Elena.Guardincerri@ge.infn.it)
0029 //
0030 // History:
0031 // -----------
0032 // 28 Nov 2001 Elena Guardincerri     Created
0033 //
0034 // -------------------------------------------------------------------
0035
0036 #include "XrayFluoNormalization.hh"
0037 #include "XrayFluoDataSet.hh"
0038 #include "G4SystemOfUnits.hh"
0039 #include "G4VDataSetAlgorithm.hh"
0040 #include "G4LogLogInterpolation.hh"
0041
0042 XrayFluoNormalization::XrayFluoNormalization()
0043
0044 { }
0045
0046 XrayFluoNormalization::~XrayFluoNormalization()
0047
0048 { }
0049
0050 const XrayFluoDataSet* XrayFluoNormalization::Normalize(G4double minIntExtreme, G4double maxIntExtreme, G4int nBins, G4String fileName)
0051 {
0052
0053  G4VDataSetAlgorithm* interpolation = new G4LogLogInterpolation();
0054
0055  XrayFluoDataSet* dataSet =
0056    new XrayFluoDataSet(1,fileName,interpolation,keV,1);
0057
0058  G4double integral = Integrate(minIntExtreme, maxIntExtreme, nBins, dataSet);
0059
0060  G4VDataSetAlgorithm* interpolation2 = new G4LogLogInterpolation();
0061
0062  XrayFluoDataSet* finalDataSet = new XrayFluoDataSet(1,fileName,interpolation2,keV,1/(integral/keV));
0063  return finalDataSet;
0064 }
0065
0066 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0067
0068 G4double XrayFluoNormalization::Integrate(G4double minIntExtreme, G4double maxIntExtreme, G4int nBins, XrayFluoDataSet* dataSet)
0069 {
0070  G4double partialHeight = 0;
0071  G4int id = 0;
0072  G4double lenghtOfBins = (maxIntExtreme - minIntExtreme)/nBins;
0073
0074  for (G4int i = 0; i<nBins; i++)
0075    {
0076      G4double midPoint = minIntExtreme + i*lenghtOfBins+lenghtOfBins/2;
0077
0078      G4double heightOfRectangle = dataSet->FindValue(midPoint,id);
0079
0080      partialHeight += heightOfRectangle;
0081
0082    }
0083
0084  G4double integral = lenghtOfBins * partialHeight;
0085
0086  delete dataSet;
0087  dataSet = 0;
0088  return integral;
0089 }
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