Hal::HelixX Class Reference

#include <Helix.h>

Inheritance diagram for Hal::HelixX:

Public Member Functions
	HelixX (const TVector3 &x, const TVector3 &mom, Double_t charge, Double_t conversion=0.)
void	PathLength (Double_t r, Double_t &s1, Double_t &s2) const
void	PathLength (Double_t r, Double_t y, Double_t z, Double_t &s1, Double_t &s2) const
void	SetParams (const TVector3 &x, const TVector3 &mom, Double_t charge, Double_t conversion=0.)
void	EvaluateFull (Double_t s, TVector3 &mom, TVector3 &pos) const
Double_t	GetXcenter () const
Double_t	GetYcenter () const
Double_t	GetZcenter () const
Double_t	GetStartX () const
Double_t	GetStartY () const
Double_t	GetStartZ () const
Double_t	PathLength (TVector3 point, Bool_t scanPeriods=kTRUE) const
Double_t	PathLength (Double_t y, Double_t z) const
TVector3	EvalPos (Double_t s) const
TVector3	EvalMom (Double_t s) const
TVector3	GetStartPoint () const
Int_t	Intersection (Double_t R, TVector3 &x1, TVector3 &x2) const
HelixX &	operator= (const HelixX &helix)
void	Print (Option_t *="") const
void	Shift (Double_t x, Double_t y, Double_t z)
Public Member Functions inherited from Hal::HelixBase
	HelixBase (const HelixBase &t)
	HelixBase (const TVector3 &x, const TVector3 &mom, Double_t charge, Double_t conversion=0.)
Double_t	GetCurv () const
Double_t	GetPhi0 () const
Double_t	GetDipAngle () const
Double_t	GetH () const
HelixBase &	operator= (const HelixBase &helix)
void	PathLengths (const HelixBase &h, Double_t &s1, Double_t &s2) const
Double_t	GetPathAbsMin (Double_t s1, Double_t s2) const
Double_t	GetPeriod () const
Double_t	GetRotationDirection () const

Additional Inherited Members
Static Public Member Functions inherited from Hal::HelixBase
static void	SetMagField (Double_t Bz)
static Double_t	MaxPath ()
Protected Member Functions inherited from Hal::HelixBase
	HelixBase (Double_t x, Double_t y, Double_t z, Double_t px, Double_t py, Double_t pz, Double_t charge, Double_t conversion=0.)
void	BasePathLength (Double_t r, Double_t x, Double_t y, Double_t &s1, Double_t &s2) const
void	BaseSetParams (const TVector3 &x, const TVector3 &mom, Double_t charge, Double_t conversion=0.)
void	BaseSetParams (Double_t x, Double_t y, Double_t z, Double_t px, Double_t py, Double_t pz, Double_t charge, Double_t conversion=0)
Double_t	BaseGetXcenter () const
Double_t	BaseGetYcenter () const
Double_t	BaseGetStartX () const
Double_t	BaseGetStartY () const
Double_t	BaseGetStartZ () const
Double_t	BasePathLength (const TVector3 &point, Bool_t scanPeriods=kTRUE) const
Double_t	BasePathLength (Double_t x, Double_t y) const
TVector3	BasePosition (Double_t s) const
TVector3	BaseGetStartPoint () const
TVector3	BaseMomentum (Double_t s) const
Int_t	BaseIntersection (Double_t R, TVector3 &x1, TVector3 &x2) const
void	BasePrint () const
void	BasePathLength (Double_t r, Double_t &s1, Double_t &s2) const
void	BaseShift (Double_t x, Double_t y, Double_t z)
void	BaseFullEval (Double_t s, TVector3 &mom, TVector3 &pos) const

Detailed Description

helix with non-zero constant Bx field

Definition at line 162 of file Helix.h.

Constructor & Destructor Documentation

HelixX() [1/2]

Hal::HelixX::HelixX

(

)

Definition at line 26 of file Helix.cxx.

HelixX() [2/2]

Hal::HelixX::HelixX	(	const TVector3 &	x,
		const TVector3 &	mom,
		Double_t	charge,
		Double_t	conversion = 0. )

Parameters

x	initial position
mom	momentum at x
charge	electric charge in e
conversion	not used

Definition at line 28 of file Helix.cxx.

~HelixX()

virtual Hal::HelixX::~HelixX ( )

inlinevirtual

Definition at line 310 of file Helix.h.

Member Function Documentation

EvalMom()

TVector3 Hal::HelixX::EvalMom ( Double_t s ) const

inline

Parameters

s

Returns

momentum at s

Definition at line 269 of file Helix.h.

EvalPos()

TVector3 Hal::HelixX::EvalPos ( Double_t s ) const

inline

Parameters

s

Returns

helix corrdinates at lengith s

Definition at line 259 of file Helix.h.

EvaluateFull()

void Hal::HelixX::EvaluateFull ( Double_t s, TVector3 & mom, TVector3 & pos ) const

inline

calculates the momentum and position of trajectory at given s

Parameters

s
mom
pos

Definition at line 201 of file Helix.h.

GetStartPoint()

TVector3 Hal::HelixX::GetStartPoint ( ) const

inline

Returns

star point of helix

Definition at line 278 of file Helix.h.

GetStartX()

Double_t Hal::HelixX::GetStartX ( ) const

inline

Returns

start X

Definition at line 225 of file Helix.h.

GetStartY()

Double_t Hal::HelixX::GetStartY ( ) const

inline

Returns

start Y

Definition at line 230 of file Helix.h.

GetStartZ()

Double_t Hal::HelixX::GetStartZ ( ) const

inline

Returns

start Z

Definition at line 235 of file Helix.h.

GetXcenter()

Double_t Hal::HelixX::GetXcenter ( ) const

inline

Returns

x-center

Definition at line 210 of file Helix.h.

GetYcenter()

Double_t Hal::HelixX::GetYcenter ( ) const

inline

Returns

zeo

Definition at line 215 of file Helix.h.

GetZcenter()

Double_t Hal::HelixX::GetZcenter ( ) const

inline

Returns

z-center

Definition at line 220 of file Helix.h.

Intersection()

Int_t Hal::HelixX::Intersection ( Double_t R, TVector3 & x1, TVector3 & x2 ) const

inline

calculate two points where circle intersect with cilider at given R

Parameters

R
x1
x2

Returns

number of solutions

Definition at line 290 of file Helix.h.

operator=()

HelixX & Hal::HelixX::operator=

(

const HelixX &

helix

)

assignement operator

Parameters

helix

Returns

Definition at line 33 of file Helix.cxx.

PathLength() [1/4]

void Hal::HelixX::PathLength ( Double_t r, Double_t & s1, Double_t & s2 ) const

inline

Definition at line 173 of file Helix.h.

PathLength() [2/4]

void Hal::HelixX::PathLength ( Double_t r, Double_t y, Double_t z, Double_t & s1, Double_t & s2 ) const

inline

calculate path lenghts for intersection of helix and circle with center x,y

Parameters

r	circle radii
y	y-circle center
z	z-circle center
s1	first path
s2	second path

Definition at line 182 of file Helix.h.

PathLength() [3/4]

Double_t Hal::HelixX::PathLength ( Double_t y, Double_t z ) const

inline

Parameters

y	point y-coordiante
z	point z-coordinate

Returns

path lenght at shortest distance between point and helix at xy plane

Definition at line 253 of file Helix.h.

PathLength() [4/4]

Double_t Hal::HelixX::PathLength ( TVector3 point, Bool_t scanPeriods = kTRUE ) const

inline

Parameters

point
scanPeriods	true if scan perdios

Returns

path at DCA between helix and point

Definition at line 242 of file Helix.h.

Print()

void Hal::HelixX::Print ( Option_t * = "" ) const

inline

Definition at line 302 of file Helix.h.

SetParams()

void Hal::HelixX::SetParams ( const TVector3 & x, const TVector3 & mom, Double_t charge, Double_t conversion = 0. )

inline

Parameters

x	start position
mom	momentum at X
charge	charge of particle
conversion	not used

Definition at line 192 of file Helix.h.

Shift()

void Hal::HelixX::Shift	(	Double_t	x,
		Double_t	y,
		Double_t	z )

shift this helix by given values

Parameters

x
y
z

Definition at line 31 of file Helix.cxx.

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

• features/phys/Helix.h
• features/phys/Helix.cxx