Moved Tao's code to TaoLEMuSR.

geant4/TaoLEMuSR/include/LEMuSRCryoField.hh

@@ -0,0 +1,63 @@
+//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$//*
+//             LOW ENERGY MUON SPIN RELAXATION, ROTATION, RADIATION 
+// 
+//  ID    :LEMuSRCryoField.hh , v 1.2
+//  AUTHOR: Taofiq PARAISO
+//  DATE  : 2006-01-19 15:17
+//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$//
+//
+//  &           &&&&&&&&&&                            &&&&&&&         &&&&&&&&
+//  &           &                                   &&      &&       &       &&
+//  &           &                   &      &       &                &       &&
+//  &           &&&&&&&            &      &         &&&&&&         &&&&&&&&  
+//  &           &                 &      &&                &      &      &&
+//  &           &                &&     &  &     &&      &&      &        &
+//  &&&&&&&&&&  &&&&&&&&&&      &  &&&&&    &&    &&&&&&&       &        &&   
+//                             &
+//                            &
+//                           &
+//                         &  
+//                               CRYOFIELD   
+//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$//
+
+#include "G4ElectricField.hh"
+#include "G4ThreeVector.hh"
+#include "G4ios.hh"
+/*!
+ * This class is defines homogenous electric field in the cryostat region.
+ * It is obsolete since a field map has been introduces for this region.
+ * Should be removed in the future.
+ */
+
+class LEMuSRCryoField : public G4ElectricField
+{
+public: 
+
+  /*! This constructor initializes the field for all the sample chamber
+   */
+  LEMuSRCryoField(G4ThreeVector FieldVector);
+  /*! The constructor initializes the field within the boundary cylinder centered in mcpv_z, radius and length= zmax-zmin
+   */
+
+  LEMuSRCryoField(G4ThreeVector FieldVector,G4double radius,G4double zmin, G4double zmax);
+  ~LEMuSRCryoField();
+
+  G4bool   DoesFieldChangeEnergy() const { return true; }
+  // Since an electric field can change track energy
+  
+  void GetFieldValue(const G4double pos[4], G4double *field) const;
+  
+  G4bool uniform;
+
+
+  G4double R;
+
+  
+private:
+  G4double flength, fpotential, fradius, fzmin, fzmax;
+
+
+  G4ThreeVector position;
+  G4ThreeVector EField;
+
+};