Conv4HitsReco2 Class Reference

#include <Conv4HitsReco2.h>

Public Member Functions
	Conv4HitsReco2 (math::XYZVector &, math::XYZVector &, math::XYZVector &, math::XYZVector &, math::XYZVector &)
	Conv4HitsReco2 ()
int	ConversionCandidate (math::XYZVector &, double &, double &)
void	Dump ()
int	GetLoop ()
math::XYZVector	GetMinusCenter (double &)
math::XYZVector	GetPlusCenter (double &)
double	GetRecPhi ()
double	GetRecR ()
double	GetRecR1 ()
double	GetRecR2 ()
void	Reconstruct ()
void	Refresh (math::XYZVector &vPhotVertex, math::XYZVector &h1, math::XYZVector &h2, math::XYZVector &h3, math::XYZVector &h4)
bool	RegisterBadConverge (int &num)
bool	RegisterBadConverge ()
bool	RegisterBadSign (int &num)
bool	RegisterBadSign ()
bool	RegisterUnsolvable (int &num)
bool	RegisterUnsolvable ()
void	SetBField (double val)
void	SetFixedNumberOfIterations (double val)
void	SetMaxNumberOfIterations (int val)
void	SetPhiECut (double val)
void	SetRadiusECut (double val)
void	SetRECut (double val)
	~Conv4HitsReco2 ()

Private Member Functions
void	LocalTransformation (const math::XYZVector &v11, const math::XYZVector &v12, const math::XYZVector &v21, const math::XYZVector &v22, math::XYZVector &V11, math::XYZVector &V12, math::XYZVector &V21, math::XYZVector &V22, double Phi)

Private Attributes
double	fBField
int	fCutSatisfied
int	fFixedNumberOfIterations
math::XYZVector	fHitv11
math::XYZVector	fHitv12
math::XYZVector	fHitv21
math::XYZVector	fHitv22
int	fLoop
int	fMaxNumberOfIterations
double	fPhiE
double	fPhiECut
math::XYZVector	fPV
double	fRadiusE
double	fRadiusECut
double	fRE
math::XYZVector	fRecC1
math::XYZVector	fRecC2
double	fRecPhi
double	fRecR
double	fRecR1
double	fRecR2
double	fRECut
math::XYZVector	fRecV
int	fSignSatisfied
int	fSolved

Detailed Description

Definition at line 18 of file Conv4HitsReco2.h.

Constructor & Destructor Documentation

Conv4HitsReco2::Conv4HitsReco2	(	math::XYZVector &	vPhotVertex,
		math::XYZVector &	h1,
		math::XYZVector &	h2,
		math::XYZVector &	h3,
		math::XYZVector &	h4
	)

Definition at line 16 of file Conv4HitsReco2.cc.

References Refresh().

{
    Refresh(vPhotVertex, h1, h2, h3, h4);
}

Conv4HitsReco2::Conv4HitsReco2

(

)

Conv4HitsReco2::~Conv4HitsReco2

(

)

Definition at line 21 of file Conv4HitsReco2.cc.

{ }

Member Function Documentation

int Conv4HitsReco2::ConversionCandidate	(	math::XYZVector &	vtx,
		double &	ptplus,
		double &	ptminus
	)

Definition at line 90 of file Conv4HitsReco2.cc.

References fBField, fLoop, fRecR1, fRecR2, fRecV, and Reconstruct().

Referenced by SeedForPhotonConversionFromQuadruplets::trajectorySeed().

{
    Reconstruct();

    ptplus = fRecR2 * fBField * 0.01 * 0.3;     // 2 - positron
    ptminus = fRecR1 * fBField * 0.01 * 0.3;    // 1 - electron
    vtx = fRecV;
    //std::cout << ".";
    return fLoop;
}

void Conv4HitsReco2::Dump

(

void

)

Definition at line 244 of file Conv4HitsReco2.cc.

References gather_cfg::cout, fCutSatisfied, fSignSatisfied, and fSolved.

Referenced by SeedForPhotonConversionFromQuadruplets::trajectorySeed().

{
    std::cout << std::endl<< "================================================" << std::endl;
    std::cout << "  Nothing happend here.";
    if (fSolved==1) std::cout << "Solved.";
    if (fCutSatisfied==1) std::cout << "Cut good.";
    if (fSignSatisfied==1) std::cout << "Sign good.";
    
}

int Conv4HitsReco2::GetLoop ( )

inline

Definition at line 46 of file Conv4HitsReco2.h.

References fLoop.

{ return fLoop; };

math::XYZVector Conv4HitsReco2::GetMinusCenter

(

double &

minusR

)

Definition at line 260 of file Conv4HitsReco2.cc.

References fRecC2, and fRecR2.

{
    minusR = fRecR2;
    return fRecC2;
}

math::XYZVector Conv4HitsReco2::GetPlusCenter

(

double &

plusR

)

Definition at line 254 of file Conv4HitsReco2.cc.

References fRecC1, and fRecR1.

{
    plusR = fRecR1;
    return fRecC1;
    
}

double Conv4HitsReco2::GetRecPhi ( )

inline

Definition at line 42 of file Conv4HitsReco2.h.

References fRecPhi.

{ return fRecPhi; };

double Conv4HitsReco2::GetRecR ( )

inline

Definition at line 43 of file Conv4HitsReco2.h.

References fRecR.

{ return fRecR; };  

double Conv4HitsReco2::GetRecR1 ( )

inline

Definition at line 44 of file Conv4HitsReco2.h.

References fRecR1.

{ return fRecR1; };

double Conv4HitsReco2::GetRecR2 ( )

inline

Definition at line 45 of file Conv4HitsReco2.h.

References fRecR2.

{ return fRecR2; };

void Conv4HitsReco2::LocalTransformation ( const math::XYZVector &  v11, const math::XYZVector &  v12, const math::XYZVector &  v21, const math::XYZVector &  v22, math::XYZVector &  V11, math::XYZVector &  V12, math::XYZVector &  V21, math::XYZVector &  V22, double  Phi  )

private

Definition at line 55 of file Conv4HitsReco2.cc.

References funct::cos(), and funct::sin().

Referenced by RegisterBadConverge().

{
    double x11,x12,x21,x22,y11,y12,y21,y22;

    x11 = v11.X(); y11 = v11.Y();
    x12 = v12.X(); y12 = v12.Y();
    x21 = v21.X(); y21 = v21.Y();
    x22 = v22.X(); y22 = v22.Y();

    double SINP = std::sin(NextPhi);
    double COSP = std::cos(NextPhi);
    double SignCOSP = 1.; if(COSP < 0.) SignCOSP = -1.;
    double AbsCOSP = std::fabs(COSP);

    double X11 = -std::fabs(x11*SINP*SignCOSP - y11*AbsCOSP);
    double Y11 =  std::fabs(y11*SINP*SignCOSP + x11*AbsCOSP);

    double X21 = -std::fabs(x21*SINP*SignCOSP - y21*AbsCOSP);
    double Y21 =  std::fabs(y21*SINP*SignCOSP + x21*AbsCOSP);

    double X12 =  std::fabs(x12*SINP*SignCOSP - y12*AbsCOSP);
    double Y12 =  std::fabs(y12*SINP*SignCOSP + x12*AbsCOSP);

    double X22 =  std::fabs(x22*SINP*SignCOSP - y22*AbsCOSP);
    double Y22 =  std::fabs(y22*SINP*SignCOSP + x22*AbsCOSP);

    V11.SetXYZ(X11,Y11,0.);
    V12.SetXYZ(X12,Y12,0.);
    V21.SetXYZ(X21,Y21,0.);
    V22.SetXYZ(X22,Y22,0.);
}

void Conv4HitsReco2::Reconstruct

(

)

Definition at line 102 of file Conv4HitsReco2.cc.

References funct::cos(), fCutSatisfied, fFixedNumberOfIterations, fHitv11, fHitv12, fHitv21, fHitv22, fLoop, fMaxNumberOfIterations, fPhiE, fPhiECut, fPV, fRadiusE, fRadiusECut, fRE, fRecC1, fRecC2, fRecPhi, fRecR, fRecR1, fRecR2, fRECut, fRecV, fSignSatisfied, fSolved, mps_fire::i, funct::pow(), funct::sin(), and mathSSE::sqrt().

Referenced by ConversionCandidate().

{
    double x11,x12,x21,x22,y11,y12,y21,y22;
    //double X11,X12,X21,X22,Y11,Y12,Y21,Y22;
    x11 = fHitv11.X();  y11 = fHitv11.Y();
    x12 = fHitv12.X();  y12 = fHitv12.Y();
    x21 = fHitv21.X();  y21 = fHitv21.Y();
    x22 = fHitv22.X();  y22 = fHitv22.Y(); 

    if (fFixedNumberOfIterations==0)
    fLoop = fMaxNumberOfIterations;
    else fLoop = fFixedNumberOfIterations;

    // Setting Phi1, Phi2 initial guess range, and first guess
    double tempr1 = std::sqrt(y11*y11 + x11*x11);
    double tempr2 = std::sqrt(y12*y12 + x12*x12);

    double Phi1 = 2.0 * std::atan(y11 / (x11+tempr1));
    double Phi2 = 2.0 * std::atan(y12 / (x12+tempr2));

    if (Phi1<Phi2) Phi1 += 2.0 * 3.141592653;   // stupid Atan correction

    fPhiE = std::fabs((Phi1-Phi2)) / std::pow(2.0, fLoop + 1);

    double NextPhi = ( Phi1 + Phi2 ) / 2.0; // first guess
    double D1, D2 = 0.0;
    double prevR1 = 0; double prevR2 = 0;
    double R1 = 0; double R2 = 0;

    // Iterations
    for (int i=0; i<fLoop; i++) {

        // LOCAL TRANFORMATION & EXTRACTION
        double SINP = std::sin(NextPhi);
        double COSP = std::cos(NextPhi);
        double SignCOSP = 1.; if(COSP < 0.) SignCOSP = -1.;
        double AbsCOSP = std::fabs(COSP);

        double X11 = -std::fabs(x11*SINP*SignCOSP - y11*AbsCOSP);
        double Y11 =  std::fabs(y11*SINP*SignCOSP + x11*AbsCOSP);

        double X21 = -std::fabs(x21*SINP*SignCOSP - y21*AbsCOSP);
        double Y21 =  std::fabs(y21*SINP*SignCOSP + x21*AbsCOSP);

        double X12 =  std::fabs(x12*SINP*SignCOSP - y12*AbsCOSP);
        double Y12 =  std::fabs(y12*SINP*SignCOSP + x12*AbsCOSP);

        double X22 =  std::fabs(x22*SINP*SignCOSP - y22*AbsCOSP);
        double Y22 =  std::fabs(y22*SINP*SignCOSP + x22*AbsCOSP);
        // I'm not using LocalTransform() function because this direct way turns out to be faster




        // SOLVING EQUATIONS
        double d1 = Y21 - Y11;
        double d2 = Y22 - Y12;

        if ( ( (X11*X11*d1*d1/(X21-X11)/(X21-X11) + X11*X21 + X11*d1*d1/(X21-X11)) < 0 ) || 
             ( (X12*X12*d2*d2/(X22-X12)/(X22-X12) + X12*X22 + X12*d2*d2/(X22-X12)) < 0 )    )   
            { fSolved = -1; fLoop = i;  return; } // No real root.  Break out.
    
        else {
            fSolved = 1;
            D1 = X11*d1/(X21-X11);
            D1 = D1 + std::sqrt(X11*X11*d1*d1/(X21-X11)/(X21-X11) + X11*X21 + X11*d1*d1/(X21-X11));
            D2 = X12*d2/(X22-X12);
            D2 = D2 + std::sqrt(X12*X12*d2*d2/(X22-X12)/(X22-X12) + X12*X22 + X12*d2*d2/(X22-X12));
    
            R1 = std::fabs((X11+X21)/2.0+(D1+d1/2.0)*d1/(X21-X11));
            R2 = std::fabs((X12+X22)/2.0+(D2+d2/2.0)*d2/(X22-X12));

            if ((Y11-D1)>=(Y12-D2)) {  // Moving RIGHT
                Phi1 = NextPhi;
                                // Phi2 remains the same
                NextPhi = (Phi1+Phi2)/2.0;
            }
            else if ((Y11-D1)<(Y12-D2)) {  // Moving LEFT
                // Phi1 remains the same
                Phi2 = NextPhi;
                NextPhi = (Phi1+Phi2)/2.0; 
            } 
            
            // CHECK STOP CONDITION
            double tmpPhiE = std::fabs(Phi1-Phi2);
            double tmpRE = std::fabs( (Y11 - D1) - (Y12 - D2) );
            double tmpRadiusE = ( std::fabs(R1-prevR1) + std::fabs(R2-prevR2) ) / 2.;
            
            // A. Cut threshold satisfied - STOP - record
            if (( tmpPhiE <= fPhiECut ) && ( tmpRE <= fRECut ) && ( tmpRadiusE <= fRadiusECut ) && ( fFixedNumberOfIterations ==0 ))
            {
                fSolved = 1;  
                fCutSatisfied = 1; 
                fLoop = i+1;
                fPhiE = tmpPhiE; 
                fRE = tmpRE;    
                fRadiusE = tmpRadiusE;              
                fRecR1 = R1; 
                fRecR2 = R2; 
                fRecR = ( (Y11 - D1) + (Y12 - D2) ) / 2.0; 
                fRecPhi = NextPhi;
                fRecV.SetX( fRecR * cos(fRecPhi) );
                fRecV.SetY( fRecR * sin(fRecPhi) );
                fRecC1.SetXYZ( fRecV.X()-fRecR1*sin(fRecPhi), fRecV.Y()+fRecR1*cos(fRecPhi), 0.);
                fRecC2.SetXYZ( fRecV.X()+fRecR2*sin(fRecPhi), fRecV.Y()-fRecR2*cos(fRecPhi), 0.);
                fRecV = fRecV + fPV;
                fRecC1 = fRecC1 + fPV;
                fRecC2 = fRecC2 + fPV;
                fCutSatisfied = 1;
                if ( (R1>0)&&(R2>0)&&(D1>0)&&(D2>0)&&((Y11-D1)>0)&&((Y12-D2)>0) ) fSignSatisfied = 1;
                else fSignSatisfied = 0;
            }
            else if (i==fLoop-1) {
                fSolved = 1;  
                fCutSatisfied = 1; 
                fLoop = i+1;
                fPhiE = tmpPhiE; 
                fRE = tmpRE;    
                fRadiusE = tmpRadiusE;              
                fRecR1 = R1; 
                fRecR2 = R2; 
                fRecR = ( (Y11 - D1) + (Y12 - D2) ) / 2.0; 
                fRecPhi = NextPhi;
                fRecV.SetX( fRecR * cos(fRecPhi) );
                fRecV.SetY( fRecR * sin(fRecPhi) );
                fRecC1.SetXYZ( fRecV.X()-fRecR1*sin(fRecPhi), fRecV.Y()+fRecR1*cos(fRecPhi), 0.);
                fRecC2.SetXYZ( fRecV.X()+fRecR2*sin(fRecPhi), fRecV.Y()-fRecR2*cos(fRecPhi), 0.);
                fRecV = fRecV + fPV;
                fRecC1 = fRecC1 + fPV;
                fRecC2 = fRecC2 + fPV;
                fCutSatisfied = 0;
                if ( (R1>0)&&(R2>0)&&(D1>0)&&(D2>0)&&((Y11-D1)>0)&&((Y12-D2)>0) ) fSignSatisfied = 1;
                else fSignSatisfied = 0;
            }
            // B. Cut threshold NOT satisfied - prepare for next loop
            prevR1 = R1;   prevR2 = R2; 

        }
    }
}

void Conv4HitsReco2::Refresh	(	math::XYZVector &	vPhotVertex,
		math::XYZVector &	h1,
		math::XYZVector &	h2,
		math::XYZVector &	h3,
		math::XYZVector &	h4
	)

Definition at line 24 of file Conv4HitsReco2.cc.

References fBField, fCutSatisfied, fFixedNumberOfIterations, fHitv11, fHitv12, fHitv21, fHitv22, fMaxNumberOfIterations, fPhiE, fPhiECut, fPV, fRadiusE, fRadiusECut, fRE, fRecPhi, fRecR, fRecR1, fRecR2, fRECut, fSignSatisfied, and fSolved.

Referenced by Conv4HitsReco2().

{
    // Fix 2D plane, make primary vertex the original point
    fPV = vPhotVertex;  fPV.SetZ(0.);
    fHitv11 = h3;       fHitv11.SetZ(0.);   fHitv11 = fHitv11 - fPV;
    fHitv21 = h4;       fHitv21.SetZ(0.);   fHitv21 = fHitv21 - fPV;
    fHitv12 = h2;       fHitv12.SetZ(0.);   fHitv12 = fHitv12 - fPV;
    fHitv22 = h1;       fHitv22.SetZ(0.);   fHitv22 = fHitv22 - fPV;

    // DEFAULT setup
    fMaxNumberOfIterations = 40;
    fFixedNumberOfIterations = 0;
    fRadiusECut = 10.0;//cm
    fPhiECut = 0.03;//rad
    fRECut = 0.5;//cm   
    fBField = 3.8;//T   

    // TRIVIAL initialization
    fCutSatisfied = 0;
    fSignSatisfied = 0;
    fSolved = 0;

    fRecPhi = 0.;
    fRecR = 0.;
    fRecR1 = 0.;
    fRecR2 = 0.;
    fRadiusE = 0.;
    fRE = 0.;
    fPhiE = 0.;
}

bool Conv4HitsReco2::RegisterBadConverge ( int &  num )

inline

Definition at line 52 of file Conv4HitsReco2.h.

References fCutSatisfied.

{ if (fCutSatisfied==1) return true; else {num+=1; return false;}};

bool Conv4HitsReco2::RegisterBadConverge ( )

inline

Definition at line 53 of file Conv4HitsReco2.h.

References fCutSatisfied, LocalTransformation(), and colinearityKinematic::Phi.

{ if (fCutSatisfied==1) return true; else return false;};

bool Conv4HitsReco2::RegisterBadSign ( int &  num )

inline

Definition at line 50 of file Conv4HitsReco2.h.

References fSignSatisfied.

{ if (fSignSatisfied==1) return true; else {num+=1; return false;}};

bool Conv4HitsReco2::RegisterBadSign ( )

inline

Definition at line 51 of file Conv4HitsReco2.h.

References fSignSatisfied.

{ if (fSignSatisfied==1) return true; else return false; };

bool Conv4HitsReco2::RegisterUnsolvable ( int &  num )

inline

Definition at line 48 of file Conv4HitsReco2.h.

References fSolved.

{ if (fSolved==1) return true; else {num+=1; return false;}};

bool Conv4HitsReco2::RegisterUnsolvable ( )

inline

Definition at line 49 of file Conv4HitsReco2.h.

References fSolved.

{ if (fSolved==1) return true; else return false; };

void Conv4HitsReco2::SetBField ( double  val )

inline

Definition at line 40 of file Conv4HitsReco2.h.

References fBField, and heppy_batch::val.

{ fBField=val; };

void Conv4HitsReco2::SetFixedNumberOfIterations ( double  val )

inline

Definition at line 39 of file Conv4HitsReco2.h.

References fFixedNumberOfIterations, and heppy_batch::val.

{ fFixedNumberOfIterations=val; };

void Conv4HitsReco2::SetMaxNumberOfIterations ( int  val )

inline

Definition at line 35 of file Conv4HitsReco2.h.

References fMaxNumberOfIterations, and heppy_batch::val.

Referenced by SeedForPhotonConversionFromQuadruplets::trajectorySeed().

{ fMaxNumberOfIterations=val; };

void Conv4HitsReco2::SetPhiECut ( double  val )

inline

Definition at line 37 of file Conv4HitsReco2.h.

References fPhiECut, and heppy_batch::val.

{ fPhiECut=val; };

void Conv4HitsReco2::SetRadiusECut ( double  val )

inline

Definition at line 36 of file Conv4HitsReco2.h.

References fRadiusECut, and heppy_batch::val.

{ fRadiusECut=val; };

void Conv4HitsReco2::SetRECut ( double  val )

inline

Definition at line 38 of file Conv4HitsReco2.h.

References fRECut, and heppy_batch::val.

{ fRECut=val; };

Member Data Documentation

double Conv4HitsReco2::fBField

private

Definition at line 82 of file Conv4HitsReco2.h.

Referenced by ConversionCandidate(), Refresh(), and SetBField().

int Conv4HitsReco2::fCutSatisfied

private

Definition at line 68 of file Conv4HitsReco2.h.

Referenced by Dump(), Reconstruct(), Refresh(), and RegisterBadConverge().

int Conv4HitsReco2::fFixedNumberOfIterations

private

Definition at line 74 of file Conv4HitsReco2.h.

Referenced by Reconstruct(), Refresh(), and SetFixedNumberOfIterations().

math::XYZVector Conv4HitsReco2::fHitv11

private

Definition at line 59 of file Conv4HitsReco2.h.

Referenced by Reconstruct(), and Refresh().

math::XYZVector Conv4HitsReco2::fHitv12

private

Definition at line 59 of file Conv4HitsReco2.h.

Referenced by Reconstruct(), and Refresh().

math::XYZVector Conv4HitsReco2::fHitv21

private

Definition at line 59 of file Conv4HitsReco2.h.

Referenced by Reconstruct(), and Refresh().

math::XYZVector Conv4HitsReco2::fHitv22

private

Definition at line 59 of file Conv4HitsReco2.h.

Referenced by Reconstruct(), and Refresh().

int Conv4HitsReco2::fLoop

private

Definition at line 73 of file Conv4HitsReco2.h.

Referenced by ConversionCandidate(), GetLoop(), and Reconstruct().

int Conv4HitsReco2::fMaxNumberOfIterations

private

Definition at line 72 of file Conv4HitsReco2.h.

Referenced by Reconstruct(), Refresh(), and SetMaxNumberOfIterations().

double Conv4HitsReco2::fPhiE

private

Definition at line 80 of file Conv4HitsReco2.h.

Referenced by Reconstruct(), and Refresh().

double Conv4HitsReco2::fPhiECut

private

Definition at line 76 of file Conv4HitsReco2.h.

Referenced by Reconstruct(), Refresh(), and SetPhiECut().

math::XYZVector Conv4HitsReco2::fPV

private

Definition at line 60 of file Conv4HitsReco2.h.

Referenced by Reconstruct(), and Refresh().

double Conv4HitsReco2::fRadiusE

private

Definition at line 79 of file Conv4HitsReco2.h.

Referenced by Reconstruct(), and Refresh().

double Conv4HitsReco2::fRadiusECut

private

Definition at line 75 of file Conv4HitsReco2.h.

Referenced by Reconstruct(), Refresh(), and SetRadiusECut().

double Conv4HitsReco2::fRE

private

Definition at line 81 of file Conv4HitsReco2.h.

Referenced by Reconstruct(), and Refresh().

math::XYZVector Conv4HitsReco2::fRecC1

private

Definition at line 61 of file Conv4HitsReco2.h.

Referenced by GetPlusCenter(), and Reconstruct().

math::XYZVector Conv4HitsReco2::fRecC2

private

Definition at line 61 of file Conv4HitsReco2.h.

Referenced by GetMinusCenter(), and Reconstruct().

double Conv4HitsReco2::fRecPhi

private

Definition at line 63 of file Conv4HitsReco2.h.

Referenced by GetRecPhi(), Reconstruct(), and Refresh().

double Conv4HitsReco2::fRecR

private

Definition at line 64 of file Conv4HitsReco2.h.

Referenced by GetRecR(), Reconstruct(), and Refresh().

double Conv4HitsReco2::fRecR1

private

Definition at line 65 of file Conv4HitsReco2.h.

Referenced by ConversionCandidate(), GetPlusCenter(), GetRecR1(), Reconstruct(), and Refresh().

double Conv4HitsReco2::fRecR2

private

Definition at line 66 of file Conv4HitsReco2.h.

Referenced by ConversionCandidate(), GetMinusCenter(), GetRecR2(), Reconstruct(), and Refresh().

double Conv4HitsReco2::fRECut

private

Definition at line 77 of file Conv4HitsReco2.h.

Referenced by Reconstruct(), Refresh(), and SetRECut().

math::XYZVector Conv4HitsReco2::fRecV

private

Definition at line 61 of file Conv4HitsReco2.h.

Referenced by ConversionCandidate(), and Reconstruct().

int Conv4HitsReco2::fSignSatisfied

private

Definition at line 69 of file Conv4HitsReco2.h.

Referenced by Dump(), Reconstruct(), Refresh(), and RegisterBadSign().

int Conv4HitsReco2::fSolved

private

Definition at line 70 of file Conv4HitsReco2.h.

Referenced by Dump(), Reconstruct(), Refresh(), and RegisterUnsolvable().