FPTracker::QuadrupoleBender Class Reference

#include <QuadrupoleBender.h>

Inheritance diagram for FPTracker::QuadrupoleBender:

Collaboration diagram for FPTracker::QuadrupoleBender:

Public Types
typedef std::shared_ptr< IBender >	ConstPtr_t

Public Member Functions
	QuadrupoleBender (IQuadFocuser::Ptr_t focuser, double magnetLength, double magnetStrength, int side)
void	bend (IParticle &) const
std::string	label () const

Private Member Functions
void	swap (QuadrupoleBender &)

Private Attributes
IQuadFocuser::Ptr_t	m_focuser
double	m_length
double	m_bendConstant
double	m_dside

Static Private Attributes
static const std::string	s_label = "QuadBender"

Detailed Description

Definition at line 15 of file QuadrupoleBender.h.

Member Typedef Documentation

ConstPtr_t

typedef std::shared_ptr< IBender > FPTracker::IBender::ConstPtr_t

inherited

Definition at line 18 of file FPTracker/FPTracker/IBender.h.

Constructor & Destructor Documentation

QuadrupoleBender()

FPTracker::QuadrupoleBender::QuadrupoleBender	(	IQuadFocuser::Ptr_t	focuser,
		double	magnetLength,
		double	magnetStrength,
		int	side
	)

Definition at line 19 of file QuadrupoleBender.cxx.

                              :
    m_focuser(focuser),
    m_length(magnetLength), 
    m_bendConstant(FPTrackerConstants::qkConst*magnetStrength), 
    m_dside(FPTrackerConstants::aside[side]){
  }

Member Function Documentation

bend()

void FPTracker::QuadrupoleBender::bend ( IParticle &  particle ) const

virtual

Implements FPTracker::IBender.

Definition at line 38 of file QuadrupoleBender.cxx.

                                                       {
    // calcualtes new x, y coordinates and direction after deflection
 
    //particle is at magnet front face. This method moves it to the rear face.
 
 
    double qk  = std::sqrt(m_bendConstant/particle.momentum()) ; // ---- basic formula is m Te GeV 
    //qk  = 0.2997925* Magnet_strength[magnet][side]/p ;
    
    
    Point& direction = particle.direction();
    //                                  
    double qkl = qk * m_length*m_dside  ;       
    double qkc = qk *direction[2] ;
    
    m_focuser->focus(qk, qkl, qkc, particle.displacement(), direction);
 
 
    /*
    std::cout <<std::setprecision(8)
      <<" quad xe "  << m_focuser->xe()
      <<" quad xae " << m_focuser->xae()
      <<" quad  ye " << m_focuser->ye()
      <<" quad yae " << m_focuser->yae()<<'\n';
    */
    
    particle.updatePositionFromDisplacement(TransversePoint(m_focuser->xe(), m_focuser->ye()));
    
    direction[0]  = m_focuser->xae();
    direction[1]  = m_focuser->yae();
 
    direction[2]  = std::sqrt(1. - (direction[0]*direction[0]) - (direction[1]*direction[1]))*m_dside;
    direction[0]  = direction[0]*direction[2] ;
    direction[1]  = direction[1]*direction[2] ;
    
  }

label()

std::string FPTracker::QuadrupoleBender::label ( ) const

virtual

Implements FPTracker::IBender.

Definition at line 77 of file QuadrupoleBender.cxx.

                                          {
    return s_label+":"+m_focuser->label();
  }

swap()

void FPTracker::QuadrupoleBender::swap ( QuadrupoleBender &  other )

private

Definition at line 30 of file QuadrupoleBender.cxx.

                                                    {
    std::swap(m_focuser,      other.m_focuser);
    std::swap(m_length,       other.m_length);
    std::swap(m_bendConstant, other.m_bendConstant);
    std::swap(m_dside,        other.m_dside);
  }

Member Data Documentation

m_bendConstant

double FPTracker::QuadrupoleBender::m_bendConstant

private

Definition at line 32 of file QuadrupoleBender.h.

m_dside

double FPTracker::QuadrupoleBender::m_dside

private

Definition at line 33 of file QuadrupoleBender.h.

m_focuser

IQuadFocuser::Ptr_t FPTracker::QuadrupoleBender::m_focuser

private

Definition at line 30 of file QuadrupoleBender.h.

m_length

double FPTracker::QuadrupoleBender::m_length

private

Definition at line 31 of file QuadrupoleBender.h.

s_label

const std::string FPTracker::QuadrupoleBender::s_label = "QuadBender"

staticprivate

Definition at line 28 of file QuadrupoleBender.h.

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

• QuadrupoleBender.h
• QuadrupoleBender.cxx