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File indexing completed on 2025-02-23 09:21:15
0001 // 0002 // ******************************************************************** 0003 // * License and Disclaimer * 0004 // * * 0005 // * The Geant4 software is copyright of the Copyright Holders of * 0006 // * the Geant4 Collaboration. It is provided under the terms and * 0007 // * conditions of the Geant4 Software License, included in the file * 0008 // * LICENSE and available at http://cern.ch/geant4/license . These * 0009 // * include a list of copyright holders. * 0010 // * * 0011 // * Neither the authors of this software system, nor their employing * 0012 // * institutes,nor the agencies providing financial support for this * 0013 // * work make any representation or warranty, express or implied, * 0014 // * regarding this software system or assume any liability for its * 0015 // * use. Please see the license in the file LICENSE and URL above * 0016 // * for the full disclaimer and the limitation of liability. * 0017 // * * 0018 // * This code implementation is the result of the scientific and * 0019 // * technical work of the GEANT4 collaboration. * 0020 // * By using, copying, modifying or distributing the software (or * 0021 // * any work based on the software) you agree to acknowledge its * 0022 // * use in resulting scientific publications, and indicate your * 0023 // * acceptance of all terms of the Geant4 Software license. * 0024 // ******************************************************************** 0025 // 0026 /// \file field/BlineTracer/include/G4BlineEquation.hh 0027 /// \brief Definition of the G4BlineEquation class 0028 // 0029 // 0030 // 0031 // 0032 // -------------------------------------------------------------------- 0033 // 0034 // G4BlineEquation 0035 // 0036 // Class description: 0037 // 0038 // This class defines the equation of motion needed to trace magnetic 0039 // field lines in the simulation. 0040 0041 // -------------------------------------------------------------------- 0042 // Author: Laurent Desorgher (desorgher@phim.unibe.ch) 0043 // Created - 2003-10-06 0044 // -------------------------------------------------------------------- 0045 #ifndef G4BlineEquation_h 0046 #define G4BlineEquation_h 1 0047 0048 #include "G4Mag_EqRhs.hh" 0049 #include "G4MagneticField.hh" 0050 0051 class G4BlineEquation : public G4Mag_EqRhs 0052 { 0053 public: // with description 0054 G4BlineEquation(G4MagneticField* magField); 0055 ~G4BlineEquation() override = default; 0056 // Constructor and destructor. 0057 0058 void EvaluateRhsGivenB(const G4double y[], const G4double B[3], G4double dydx[]) const override; 0059 // Given the value of the magnetic field B, this function 0060 // calculates the value of the derivative dydx. 0061 0062 void SetBackwardDirectionOfIntegration(G4bool abool); 0063 0064 private: 0065 G4bool fBackward_direction = false; 0066 G4double fDirection = 1.; 0067 }; 0068 0069 #endif
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