Import Geant4 9.3.0 source tree
This commit is contained in:
Gabriele Cosmo
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//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// $ Id: G4CachedMagneticField.hh,v 1.0 2009/07/20 18:53:00 japost Exp $
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// GEANT4 tag $Name: geant4-09-03 $
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//
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//
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// class G4CachedMagneticField
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//
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// Class description:
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//
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// Caches Magnetic Field value, for field whose evaluation is expensive.
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// History:
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// - Created. JA, July 20th, 2009.
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// --------------------------------------------------------------------
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#ifndef G4CACHED_MAGNETIC_FIELD_DEF
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#define G4CACHED_MAGNETIC_FIELD_DEF
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#include "G4Types.hh"
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#include "G4ThreeVector.hh"
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#include "G4MagneticField.hh"
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class G4CachedMagneticField : public G4MagneticField
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{
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public: // with description
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G4CachedMagneticField(G4MagneticField *, G4double distanceConst);
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virtual ~G4CachedMagneticField();
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// Constructor and destructor. No actions.
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G4CachedMagneticField(const G4CachedMagneticField &r);
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G4CachedMagneticField& operator = (const G4CachedMagneticField &p);
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// Copy constructor & assignment operator.
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virtual void GetFieldValue( const G4double Point[4],
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G4double *Bfield ) const;
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G4double GetConstDistance() const { return fDistanceConst; }
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void SetConstDistance( G4double dist ){ fDistanceConst= dist;}
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G4int GetCountCalls() const { return fCountCalls; }
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G4int GetCountEvaluations() const { return fCountEvaluations; }
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void ClearCounts() { fCountCalls = 0; fCountEvaluations=0; }
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void ReportStatistics();
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private:
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G4MagneticField *fpMagneticField;
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// When the field is evaluated within this distance it will not change
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G4double fDistanceConst;
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// Caching state
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mutable G4ThreeVector fLastLocation;
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mutable G4ThreeVector fLastValue;
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protected:
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mutable G4int fCountCalls, fCountEvaluations;
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};
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#endif /* G4CACHED_MAGNETIC_FIELD_DEF */
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@@ -0,0 +1,91 @@
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//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// $Id: G4EqEMFieldWithEDM.hh,v 1.1 2009/11/04 23:51:42 gum Exp $
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// GEANT4 tag $Name: geant4-09-03 $
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//
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//
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// class G4EqEMFieldWithEDM
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//
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// Class description:
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//
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// This is the right-hand side of equation of motion in a combined
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// electric and magnetic field, with spin tracking for both MDM and
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// EDM terms.
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// History:
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// - Created. Kevin Lynch, 19.02.2009, based on G4EqEMFieldWithSpin
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// -------------------------------------------------------------------
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#ifndef G4EQEMFIELDWITHEDM_hh
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#define G4EQEMFIELDWITHEDM_hh
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#include "G4EquationOfMotion.hh"
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class G4ElectroMagneticField;
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class G4EqEMFieldWithEDM : public G4EquationOfMotion
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{
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public: // with description
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G4EqEMFieldWithEDM(G4ElectroMagneticField *emField );
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~G4EqEMFieldWithEDM();
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void SetChargeMomentumMass(G4double particleCharge, // in e+ units
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G4double MomentumXc,
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G4double mass);
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void EvaluateRhsGivenB(const G4double y[],
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const G4double Field[],
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G4double dydx[] ) const;
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// Given the value of the electromagnetic field, this function
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// calculates the value of the derivative dydx.
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inline void SetAnomaly(G4double a) { anomaly = a; }
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inline G4double GetAnomaly() const { return anomaly; }
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// set/get magnetic anomaly
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inline void SetEta(G4double n) { eta = n; }
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inline G4double GetEta() const { return eta; }
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// set/get EDM eta parameter
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private:
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G4double fElectroMagCof ;
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G4double fMassCof;
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G4double omegac;
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G4double anomaly;
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G4double eta;
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G4double ParticleCharge;
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G4double E;
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G4double gamma;
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G4double beta;
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};
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#endif /* G4EQEMFIELDWITHEDM */
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@@ -23,8 +23,8 @@
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// $Id: G4MagIntegratorStepper.hh,v 1.12 2006/09/20 09:31:01 japost Exp $
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// GEANT4 tag $Name: geant4-09-02 $
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// $Id: G4MagIntegratorStepper.hh,v 1.14 2009/11/05 18:31:15 japost Exp $
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// GEANT4 tag $Name: geant4-09-03 $
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//
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//
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// class G4MagIntegratorStepper
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@@ -74,13 +74,21 @@ class G4MagIntegratorStepper
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// Estimate the maximum distance of a chord from the true path
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// over the segment last integrated.
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virtual void ComputeRightHandSide( const G4double y[], G4double dydx[] );
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// Must compute the RightHandSide as in the method below
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// Optionally can cache the input y[] and the dydx[] values computed.
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inline void NormaliseTangentVector( G4double vec[6] );
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// Simple utility function to (re)normalise 'unit velocity' vector.
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inline void NormalisePolarizationVector( G4double vec[12] );
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// Simple utility function to (re)normalise 'unit spin' vector.
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inline void RightHandSide( const double y[], double dydx[] );
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// Utility method to supply the standard Evaluation of the
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// Right Hand side of the associated equation.
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inline G4int GetNumberOfVariables() const;
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// Get the number of variables that the stepper will integrate over.
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@@ -23,8 +23,8 @@
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// $Id: G4MagIntegratorStepper.icc,v 1.10 2006/09/20 09:31:46 japost Exp $
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// GEANT4 tag $Name: geant4-09-02 $
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// $Id: G4MagIntegratorStepper.icc,v 1.12 2009/03/25 15:29:02 gcosmo Exp $
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// GEANT4 tag $Name: geant4-09-03 $
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//
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inline
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@@ -36,7 +36,8 @@ G4EquationOfMotion* G4MagIntegratorStepper::GetEquationOfMotion()
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inline void
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G4MagIntegratorStepper::SetEquationOfMotion(G4EquationOfMotion* newEquation)
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{
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if( newEquation != 0 ) {
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if( newEquation != 0 )
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{
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fEquation_Rhs= newEquation;
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}
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}
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@@ -54,12 +55,6 @@ G4int G4MagIntegratorStepper::GetNumberOfStateVariables() const
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return fNoStateVariables;
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}
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// inline
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// void G4MagIntegratorStepper::SetNumberOfVariables(G4int newNo)
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// {
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// fNumberOfVariables = newNo;
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// }
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inline
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void G4MagIntegratorStepper::RightHandSide( const double y[], double dydx[] )
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{
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@@ -69,11 +64,26 @@ void G4MagIntegratorStepper::RightHandSide( const double y[], double dydx[] )
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inline
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void G4MagIntegratorStepper::NormaliseTangentVector( G4double vec[6] )
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{
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double drds2 = vec[3]*vec[3]+vec[4]*vec[4]+vec[5]*vec[5];
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G4double drds2 = vec[3]*vec[3]+vec[4]*vec[4]+vec[5]*vec[5];
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if( std::fabs(drds2 - 1.0) > 1.e-14 ){
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double normx = 1.0 / std::sqrt(drds2);
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for(int i=0;i<3;i++)
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vec[i+3] *= normx;
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}
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if( std::fabs(drds2 - 1.0) > 1.e-14 )
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{
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G4double normx = 1.0 / std::sqrt(drds2);
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for(G4int i=3;i<6;i++) { vec[i] *= normx; }
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}
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}
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inline
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void G4MagIntegratorStepper::NormalisePolarizationVector( G4double vec[12] )
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{
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G4double drds2 = vec[9]*vec[9]+vec[10]*vec[10]+vec[11]*vec[11];
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if( drds2 > 0. )
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{
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if( std::fabs(drds2 - 1.0) > 1.e-14 )
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{
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G4double normx = 1.0 / std::sqrt(drds2);
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for(G4int i=9;i<12;i++) { vec[i] *= normx; }
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}
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}
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}
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@@ -0,0 +1,134 @@
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//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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||||
// * regarding this software system or assume any liability for its *
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||||
// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// $Id: G4NystromRK4.hh,v 1.3 2009/11/12 15:01:36 japost Exp $
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// GEANT4 tag $Name: geant4-09-03 $
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//
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// class G4NystromRK4
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//
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// Class description:
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//
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// Integrate the equations of the motion of a particle in a magnetic field
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// using 4th Runge-Kutta-Nystrom method with errors estimation
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// (ATL-SOFT-PUB-2009-01)
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// Current form can be used only for 'pure' magnetic field.
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// Notes: 1) field must be time-independent.
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// 2) time is not integrated
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//
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// History:
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// - Created: I.Gavrilenko 15.05.2009 (as G4AtlasRK4)
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// - Adaptations: J. Apostolakis May-Nov 2009
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// -------------------------------------------------------------------
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#ifndef G4NYSTROMRK4_HH
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#define G4NYSTROMRK4_HH
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#include "globals.hh"
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#include "G4MagIntegratorStepper.hh"
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#include "G4Mag_EqRhs.hh"
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class G4NystromRK4 : public G4MagIntegratorStepper
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{
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public:
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G4NystromRK4(G4Mag_EqRhs *EquationMotion, G4double distanceConstField=0.0);
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// Can be used only for Magnetic Fields - and for 6 variables (x,p)
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~G4NystromRK4() ;
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void Stepper(const G4double P [],
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const G4double dPdS[],
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G4double step ,
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G4double Po [],
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G4double Err []);
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// Single call for integration result and error
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// - Provides Error via analytical method
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virtual void ComputeRightHandSide(const double P[],double dPdS[]);
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// Must compute RHS - and does caches result
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void SetDistanceForConstantField( G4double length );
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G4double GetDistanceForConstantField() const;
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G4int IntegratorOrder() const {return 4;}
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G4double DistChord() const;
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private:
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inline void getField (const G4double P[4]);
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////////////////////////////////////////////////////////////////
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// Private data
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////////////////////////////////////////////////////////////////
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G4Mag_EqRhs* m_fEq;
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G4double m_lastField[3];
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G4double m_fldPosition[4];
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G4double m_magdistance ;
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G4double m_magdistance2;
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G4double m_cof ;
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G4double m_mom ;
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G4double m_imom ;
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G4bool m_cachedMom ;
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G4double m_iPoint [3];
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G4double m_mPoint [3];
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G4double m_fPoint [3];
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};
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/////////////////////////////////////////////////////////////////////////////////
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// Inline methods
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/////////////////////////////////////////////////////////////////////////////////
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inline void G4NystromRK4::SetDistanceForConstantField( G4double length )
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{
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m_magdistance= length;
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m_magdistance2 = length*length;
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}
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inline G4double G4NystromRK4::GetDistanceForConstantField() const
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{
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return m_magdistance;
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}
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/////////////////////////////////////////////////////////////////////////////////
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// Get value of magnetic field while checking distance from last stored call
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/////////////////////////////////////////////////////////////////////////////////
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inline void G4NystromRK4::getField (const G4double P[4])
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{
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G4double dx = P[0]-m_fldPosition[0];
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G4double dy = P[1]-m_fldPosition[1];
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G4double dz = P[2]-m_fldPosition[2];
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if((dx*dx+dy*dy+dz*dz) > m_magdistance2) {
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m_fldPosition[0] = P[0];
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m_fldPosition[1] = P[1];
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m_fldPosition[2] = P[2];
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m_fldPosition[3] = P[3]; // Generally it is P[7] - changed convention !!
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m_fEq->GetFieldValue(m_fldPosition, m_lastField);
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}
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}
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#endif // G4NYSTROMRK4
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