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paraiso
2006-02-16 17:21:13 +00:00
parent b67a2876ac
commit b98f222ba8
49 changed files with 1577 additions and 183 deletions
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62
geant4/LEMuSR/include/LEMuSRElectricField.hh
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@ -1,10 +1,10 @@
///§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§//*
//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$//*
// LOW ENERGY MUON SPIN RELAXATION, ROTATION, RADIATION
//
// ID :LEMuSRElectricField.hh , v 1.3
// AUTHOR: Taofiq PARAISO
// DATE : 2004-09-17 10:20
//§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§//
//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$//
//
// & &&&&&&&&&& &&&&&&& &&&&&&&&
// & & && && & &&
@ -18,7 +18,35 @@
// &
// &
// Electric Field
//§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§§//
//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$//
/**
* The goal of the LEMuSRElectricField class is to read field maps generated by
* COMSOL Multiphysics.
* \image html field.gif Example of a field map generated using COMSOL.
* Those field maps are shared into three ascii files, one per field component,
* in the format (x y z B_i).
* LEMuSRElectricField reads those files and store them in an array.
* Some important parameters must be specified to read a field map:
* -# <b> The number of points</b> along each axis which was defined in COMSOL
* before exporting the maps.
* - It is very important to check that the number of points do not
* exceed the size of the array defined in LEMuSRElectricField.hh
* -# <b> The unit of the map</b>, which is an important parameter because the
* default distance unit in COMSOL is the meter.
* - A different unit has an influence
* on the coordinates reading, but also on the actual field value which has to
* be scaled consequently.
* -# The voltage to use because field maps are calculated for 1kV potential.
* The user should indicate the actual voltage to multiply the fields values.
* -# The offset along z axis, in case the map is not centered on the actual
* postition of the field. This is the case for the third lense field for example:
* the map is centered on (0, 0, 0) and the center or the lens is at (0, 0, -567mm).
* .
* The field maps can be very heavy files and reading them can cost a lot of time.
* For this reason, it is possible to write the field map array in a single file
* after the first reading.
*/
#ifndef LEMUSRELECTRICFIELD_H
#define LEMUSRELECTRICFIELD_H 1
@ -42,20 +70,28 @@ class LEMuSRElectricField : public G4ElectricField
{
public:
//! Constructor from three field maps
LEMuSRElectricField(G4double fieldval,const char* Xfile,
const char* Yfile,
const char* Zfile,G4String map_length_unit,
G4double Offset, G4double nx, G4double ny, G4double nz);//offset must be entered in millimeter
//! Contructor from a single field map
LEMuSRElectricField(G4double fieldval,const char* file,G4String map_length_unit,
G4double Offset, G4double nx, G4double ny, G4double nz);
~LEMuSRElectricField();
//! Returns the field value at Point[4] space-time coordinate.
/*!
* This method is in charge of returning the field value for a given position.
* It scales the field array according to the unit and interpolates the field
* value from the cube surrounding Point[4].
*/
void GetFieldValue(const G4double Point[4], G4double *Bfield) const;
//! Debugging test.
void Test();
public:
@ -66,13 +102,25 @@ public:
// std::vector< std::vector< std::vector< G4double > > > yField;
// std::vector< std::vector< std::vector< G4double > > > zField;
//! Bx, By, Bz, for all x positions
G4double xField[90][90][201];
//! Bx, By, Bz, for all y positions
G4double yField[90][90][201];
//! Bx, By, Bz, for all z positions
G4double zField[90][90][201];
// The physical limits of the defined region
//! The physical limits of the defined region
G4double minx, maxx, miny, maxy, minz, maxz;
G4double dx, dy, dz, zOffset, nx,ny,nz, FieldVal;
G4double
//! Number of divisions along axis.
nx,ny,nz,
//! Offset along propagation axis
zOffset,
//! Actual voltage value.
FieldVal;
//! Unit of the field map.
G4String map_unit;
};