genfit::GoliathField Class Reference

Constant Magnetic field. More...

#include <GoliathField.h>

Inheritance diagram for genfit::GoliathField:

Collaboration diagram for genfit::GoliathField:

Public Member Functions
	GoliathField (double b1, double b2, double b3)
	define the constant field in this ctor
	GoliathField (const TVector3 &field)
TVector3	get (const TVector3 &pos) const
	return value at position
void	get (const double &posX, const double &posY, const double &posZ, double &Bx, double &By, double &Bz) const
	Get the magneticField [kGauss] at position.
void	getpos (TString vol, TVector3 &bot, TVector3 &top) const
void	setup ()
Public Member Functions inherited from genfit::AbsBField
	AbsBField ()
virtual	~AbsBField ()

Public Attributes
Float_t	coords [13][6]

Private Attributes
TVector3	field_

Detailed Description

Constant Magnetic field.

Author

Christian Höppner (Technische Universität München, original author)

Sebastian Neubert (Technische Universität München, original author)

Definition at line 37 of file GoliathField.h.

Constructor & Destructor Documentation

GoliathField() [1/2]

genfit::GoliathField::GoliathField ( double  b1, double  b2, double  b3  )

inline

define the constant field in this ctor

Definition at line 40 of file GoliathField.h.

    : field_(b1, b2, b3)
  { ; }

GoliathField() [2/2]

genfit::GoliathField::GoliathField ( const TVector3 &  field )

inline

Definition at line 44 of file GoliathField.h.

    : field_(field)
  { ; }

Member Function Documentation

get() [1/2]

void genfit::GoliathField::get ( const double &  posX, const double &  posY, const double &  posZ, double &  Bx, double &  By, double &  Bz  ) const

virtual

Get the magneticField [kGauss] at position.

Override this in your concrete implementation.

Reimplemented from genfit::AbsBField.

Definition at line 47 of file GoliathField.cc.

                                                                                                                            {
  Bx=0.;By=0.;Bz=0.;
  if ((posX < coords[0][0]) && (posX > coords[0][3]) && (posY < coords[0][1]) && (posY > coords[0][4]) && (posZ < coords[0][2]+5.) && (posZ>coords[0][5]+5.) ) {
     Bx = field_.X();
     By = field_.Y();
     Bz = field_.Z(); 
  }
  else {
    for (Int_t i=1;i<13;i++){  
     if ((posX < coords[i][0]) && (posX > coords[i][3]) && (posY < coords[i][1]) && (posY > coords[i][4]) && (posZ < coords[i][2]) && (posZ>coords[i][5])) {
       Bx = 0.;
       By = -10.;
       Bz = 0.; 
       break;      
     }      
    } 
  } 
}

get() [2/2]

TVector3 genfit::GoliathField::get ( const TVector3 &  pos ) const

virtual

return value at position

Implements genfit::AbsBField.

Definition at line 43 of file GoliathField.cc.

                                                {
  return field_;
}

getpos()

void genfit::GoliathField::getpos	(	TString	vol,
		TVector3 &	bot,
		TVector3 &	top
	)		const

Definition at line 67 of file GoliathField.cc.

                                                                               {
   TGeoNavigator* nav = gGeoManager->GetCurrentNavigator();
   Bool_t rc = nav->cd(volname);
   if (not rc){
       cout << "Goliathfield::getpos, TGeoNavigator failed "<<volname<<endl; 
       return;
   }  
   TGeoNode* W = nav->GetCurrentNode();
   TGeoBBox* S = dynamic_cast<TGeoBBox*>(W->GetVolume()->GetShape());
   Double_t top[3] = {S->GetDX(),S->GetDY(),S->GetDZ()};
   Double_t bot[3] = {-S->GetDX(),-S->GetDY(),-S->GetDZ()};
   Double_t Gtop[3],Gbot[3];
   nav->LocalToMaster(top, Gtop);
   nav->LocalToMaster(bot, Gbot);
   vtop.SetXYZ(Gtop[0],Gtop[1],Gtop[2]);
   vbot.SetXYZ(Gbot[0],Gbot[1],Gbot[2]);
}

setup()

void genfit::GoliathField::setup

(

)

Definition at line 85 of file GoliathField.cc.

                        {
  TVector3 bot,top;
  std::vector<TString> volume={"/volGoliath_1/VolVacuum_1","/volGoliath_1/volLateralS1_1","/volGoliath_1/volLateralS2_1","/volGoliath_1/volLateralSurface1low_1",
  "/volGoliath_1/volLateralSurface2low_1","/volGoliath_1/volLateralS1_b_1","/volGoliath_1/volLateralS2_b_1","/volGoliath_1/volLateralSurface1blow_1",
  "/volGoliath_1/volLateralSurface2blow_1","/volGoliath_1/volLateralS1_d_1","/volGoliath_1/volLateralS2_d_1","/volGoliath_1/volLateralS1_c_1",
  "/volGoliath_1/volLateralS2_c_1"};
  for (Int_t i=0;i<13;i++){
    getpos(volume[i],bot,top);
    for (Int_t j=0;j<3;j++) {
      coords[i][j]=top[j];
      coords[i][j+3]=bot[j];        
    }
    //std::cout<<volume[i]<<" "<<coords[i][3] << " posX " << posX <<" "<< coords[i][0] << ";" << coords[i][4] << " posY "<< posY <<" "<<  coords[i][1] << ";" << coords[i][5] << " posZ " << posZ<<" "<< coords[i][2]<<std::endl; 
  }
}

Member Data Documentation

coords

Float_t genfit::GoliathField::coords[13][6]

Definition at line 47 of file GoliathField.h.

field_

TVector3 genfit::GoliathField::field_

private

Definition at line 57 of file GoliathField.h.

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The documentation for this class was generated from the following files:

• genfit/fields/include/GoliathField.h
• genfit/fields/src/GoliathField.cc