79 lines
2.8 KiB
C++
79 lines
2.8 KiB
C++
// Geant4 simulation for MuSR
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// AUTHOR: Toni SHIROKA, Paul Scherrer Institut, PSI
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// DATE : 2008-05
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//
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#ifndef lem4TabulatedElementField2Df_h
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#define lem4TabulatedElementField2Df_h 1
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#include "F04ElementField.hh"
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#include "F04GlobalField.hh"
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#include "globals.hh"
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#include "G4ios.hh"
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#include <fstream>
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#include <vector>
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#include <cmath>
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class lem4TabulatedElementField2Df : public F04ElementField
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{
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public: // with description
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// Class constructor for r-axis FOLDED 2D axial field map (r, z, EMr, EMz) - with EM = E or B; r - radial, z - longit.
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lem4TabulatedElementField2Df(const char* filename, const char fieldType, G4double fieldValue, G4LogicalVolume* logVolume, G4ThreeVector positionOfTheCenter);
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//
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// "fieldType" is the type of EM field: electric - E, or magnetic - B
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// "fieldValue" is the field to be applied (in T, or in kV/mm). The normalised field
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// map values are multiplied by this value. The field-map itself has no units!
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// "lenUnit" is the unit in which the grid coordinates of the field-map are specified
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// "fieldNormalisation" is the normalisation factor that once applied to the tabulated field values
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// satisfies the condition: (max. field value)*fieldNormalisation = 1
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// To revert field direction, change its sign to negative.
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// Virtual destructor
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virtual ~lem4TabulatedElementField2Df() {}
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// addFieldValue() adds the field for THIS particular map into field[].
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// point[] is expressed in GLOBAL coordinates.
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void addFieldValue( const G4double Point[4], G4double* field) const;
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// Usual Set and Get functions
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G4double GetNominalFieldValue();
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void SetNominalFieldValue(G4double newFieldValue);
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// getWidth(), getHeight(), getLength(), return the dimensions of the field
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// (used to define the boundary of the field)
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virtual G4double getWidth() { return 2*dr; } // x coordinate
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virtual G4double getHeight() { return 2*dr; } // y coordinate
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virtual G4double getLength() { return 2*dz; } // z coordinate
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private:
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// Storage space for the 2D table
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std::vector< std::vector< double > > rField;
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std::vector< std::vector< double > > zField;
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// The field-map dimensions
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int nr, nz;
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// The field map Length unit (string and number)
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G4String lUnit;
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double lenUnit;
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// The DEFAULT user-defined field units for E and B (kilovolt/mm and tesla)
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G4String fUnit;
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double fieUnit;
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// The field-map Field normalisation factor
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double fieldNormalisation;
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// The physical limits of the defined region
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double minimumr, maximumr, minimumz, maximumz;
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// The physical extent of the defined region
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double dr, dz;
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// See the description under the class constructor
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char fldType;
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double ffieldValue;
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void Invert(const char* indexToInvert);
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};
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#endif
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