Geant4 9.6.0
Toolkit for the simulation of the passage of particles through matter
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G4ErrorFreeTrajState Class Reference

#include <G4ErrorFreeTrajState.hh>

+ Inheritance diagram for G4ErrorFreeTrajState:

Public Member Functions

 G4ErrorFreeTrajState ()
 
 G4ErrorFreeTrajState (const G4String &partName, const G4Point3D &pos, const G4Vector3D &mom, const G4ErrorTrajErr &errmat=G4ErrorTrajErr(5, 0))
 
 G4ErrorFreeTrajState (const G4ErrorSurfaceTrajState &tpOS)
 
 ~G4ErrorFreeTrajState ()
 
virtual G4int Update (const G4Track *aTrack)
 
virtual G4int PropagateError (const G4Track *aTrack)
 
virtual void Dump (std::ostream &out=G4cout) const
 
virtual void SetPosition (const G4Point3D pos)
 
virtual void SetMomentum (const G4Vector3D &mom)
 
void SetParameters (const G4Point3D &pos, const G4Vector3D &mom)
 
G4ErrorFreeTrajParam GetParameters () const
 
G4ErrorMatrix GetTransfMat () const
 
- Public Member Functions inherited from G4ErrorTrajState
 G4ErrorTrajState ()
 
 G4ErrorTrajState (const G4String &partType, const G4Point3D &pos, const G4Vector3D &mom, const G4ErrorTrajErr &errmat=G4ErrorTrajErr(5, 0))
 
virtual ~G4ErrorTrajState ()
 
void SetData (const G4String &partType, const G4Point3D &pos, const G4Vector3D &mom)
 
void BuildCharge ()
 
virtual G4int PropagateError (const G4Track *)
 
virtual G4int Update (const G4Track *)
 
void UpdatePosMom (const G4Point3D &pos, const G4Vector3D &mom)
 
void DumpPosMomError (std::ostream &out=G4cout) const
 
virtual void Dump (std::ostream &out=G4cout) const =0
 
const G4String & GetParticleType () const
 
void SetParticleType (const G4String &partType)
 
G4Point3D GetPosition () const
 
virtual void SetPosition (const G4Point3D pos)
 
G4Vector3D GetMomentum () const
 
virtual void SetMomentum (const G4Vector3D &mom)
 
G4ErrorTrajErr GetError () const
 
virtual void SetError (G4ErrorTrajErr em)
 
G4Track * GetG4Track () const
 
void SetG4Track (G4Track *trk)
 
G4double GetCharge () const
 
void SetCharge (G4double ch)
 
virtual G4eTSType GetTSType () const
 

Friends

std::ostream & operator<< (std::ostream &, const G4ErrorFreeTrajState &ts)
 

Additional Inherited Members

- Protected Attributes inherited from G4ErrorTrajState
G4String fParticleType
 
G4Point3D fPosition
 
G4Vector3D fMomentum
 
G4double fCharge
 
G4ErrorTrajErr fError
 
G4eTSType theTSType
 
G4Track * theG4Track
 
G4int iverbose
 

Detailed Description

Definition at line 65 of file G4ErrorFreeTrajState.hh.

Constructor & Destructor Documentation

◆ G4ErrorFreeTrajState() [1/3]

G4ErrorFreeTrajState::G4ErrorFreeTrajState ( )
inline

Definition at line 69 of file G4ErrorFreeTrajState.hh.

69: theFirstStep(true) {}

◆ G4ErrorFreeTrajState() [2/3]

G4ErrorFreeTrajState::G4ErrorFreeTrajState ( const G4String &  partName,
const G4Point3D &  pos,
const G4Vector3D &  mom,
const G4ErrorTrajErr &  errmat = G4ErrorTrajErr(5,0) 
)

Definition at line 49 of file G4ErrorFreeTrajState.cc.

49 : G4ErrorTrajState( partName, pos, mom, errmat )
50{
51 fTrajParam = G4ErrorFreeTrajParam( pos, mom );
52 Init();
53}

◆ G4ErrorFreeTrajState() [3/3]

G4ErrorFreeTrajState::G4ErrorFreeTrajState ( const G4ErrorSurfaceTrajState &  tpOS)

Definition at line 57 of file G4ErrorFreeTrajState.cc.

57 : G4ErrorTrajState( tpSD.GetParticleType(), tpSD.GetPosition(), tpSD.GetMomentum() )
58{
59 // G4ThreeVector planeNormal = tpSD.GetPlaneNormal();
60 // G4double fPt = tpSD.GetMomentum()*planeNormal;//mom projected on normal to plane
61 // G4ErrorSurfaceTrajParam tpSDparam = tpSD.GetParameters();
62 // G4ThreeVector Psc = fPt * planeNormal + tpSDparam.GetPU()*tpSDparam.GetVectorU() + tpSD.GetPV()*tpSD.GetVectorW();
63
64 fTrajParam = G4ErrorFreeTrajParam( fPosition, fMomentum );
65 Init();
66
67 //----- Get the error matrix in SC coordinates
68 G4ErrorSurfaceTrajParam tpSDparam = tpSD.GetParameters();
69 G4double mom = fMomentum.mag();
70 G4double mom2 = fMomentum.mag2();
71 G4double TVW1 = std::sqrt( mom2 / ( mom2 + tpSDparam.GetPV()*tpSDparam.GetPV() + tpSDparam.GetPV()*tpSDparam.GetPV()) );
72 G4ThreeVector vTVW( TVW1, tpSDparam.GetPV()/mom * TVW1, tpSDparam.GetPW()/mom * TVW1 );
73 G4Vector3D vectorU = tpSDparam.GetVectorV().cross( tpSDparam.GetVectorW() );
74 G4Vector3D vTN = vTVW.x()*vectorU + vTVW.y()*tpSDparam.GetVectorV() + vTVW.z()*tpSDparam.GetVectorW();
75
76#ifdef G4EVERBOSE
77 if( iverbose >= 5){
78 G4double pc2 = std::asin( vTN.z() );
79 G4double pc3 = std::atan (vTN.y()/vTN.x());
80
81 G4cout << " CHECK: pc2 " << pc2 << " = " << GetParameters().GetLambda() << " diff " << pc2-GetParameters().GetLambda() << G4endl;
82 G4cout << " CHECK: pc3 " << pc3 << " = " << GetParameters().GetPhi() << " diff " << pc3-GetParameters().GetPhi() << G4endl;
83 }
84#endif
85
86 //--- Get the unit vectors perp to P
87 G4double cosl = std::cos( GetParameters().GetLambda() );
88 if (cosl < 1.E-30) cosl = 1.E-30;
89 G4double cosl1 = 1./cosl;
90 G4Vector3D vUN(-vTN.y()*cosl1, vTN.x()*cosl1, 0. );
91 G4Vector3D vVN(-vTN.z()*vUN.y(), vTN.z()*vUN.x(), cosl );
92
93 G4Vector3D vUperp = G4Vector3D( -fMomentum.y(), fMomentum.x(), 0.);
94 G4Vector3D vVperp = vUperp.cross( fMomentum );
95 vUperp *= 1./vUperp.mag();
96 vVperp *= 1./vVperp.mag();
97
98#ifdef G4EVERBOSE
99 if( iverbose >= 5){
100 G4cout << " CHECK: vUN " << vUN << " = " << vUperp << " diff " << (vUN-vUperp).mag() << G4endl;
101 G4cout << " CHECK: vVN " << vVN << " = " << vVperp << " diff " << (vVN-vVperp).mag() << G4endl;
102 }
103#endif
104
105 //get the dot products of vectors perpendicular to direction and vector defining SD plane
106 G4double dUU = vUperp * tpSD.GetVectorV();
107 G4double dUV = vUperp * tpSD.GetVectorW();
108 G4double dVU = vVperp * tpSD.GetVectorV();
109 G4double dVV = vVperp * tpSD.GetVectorW();
110
111
112 //--- Get transformation first
113 G4ErrorMatrix transfM(5, 5, 1 );
114 //--- Get magnetic field
115 const G4Field* field = G4TransportationManager::GetTransportationManager()->GetFieldManager()->GetDetectorField();
116 G4ThreeVector dir = fTrajParam.GetDirection();
117 G4double invCosTheta = 1./std::cos( dir.theta() );
118
119 if( fCharge != 0
120&& field ) {
121 G4double pos1[3]; pos1[0] = fPosition.x()*cm; pos1[1] = fPosition.y()*cm; pos1[2] = fPosition.z()*cm;
122 G4double h1[3];
123 field->GetFieldValue( pos1, h1 );
124 G4ThreeVector HPre = G4ThreeVector( h1[0], h1[1], h1[2] ) / tesla *10.;
125 G4double magHPre = HPre.mag();
126 G4double invP = 1./fMomentum.mag();
127 G4double magHPreM = magHPre * invP;
128 if( magHPre != 0. ) {
129 G4double magHPreM2 = fCharge / magHPre;
130
131 G4double Q = -magHPreM * c_light;
132 G4double sinz = -HPre*vUperp * magHPreM2;
133 G4double cosz = HPre*vVperp * magHPreM2;
134
135 transfM[1][3] = -Q*dir.y()*sinz;
136 transfM[1][4] = -Q*dir.z()*sinz;
137 transfM[2][3] = -Q*dir.y()*cosz*invCosTheta;
138 transfM[2][4] = -Q*dir.z()*cosz*invCosTheta;
139 }
140 }
141
142 transfM[0][0] = 1.;
143 transfM[1][1] = dir.x()*dVU;
144 transfM[1][2] = dir.x()*dVV;
145 transfM[2][1] = dir.x()*dUU*invCosTheta;
146 transfM[2][2] = dir.x()*dUV*invCosTheta;
147 transfM[3][3] = dUU;
148 transfM[3][4] = dUV;
149 transfM[4][3] = dVU;
150 transfM[4][4] = dVV;
151
152 fError = G4ErrorTrajErr( tpSD.GetError().similarity( transfM ) );
153
154#ifdef G4EVERBOSE
155 if( iverbose >= 1) G4cout << "error matrix SD2SC " << fError << G4endl;
156 if( iverbose >= 4) G4cout << "G4ErrorFreeTrajState from SD " << *this << G4endl;
157#endif
158}
G4ErrorTrajErr
G4ErrorSymMatrix G4ErrorTrajErr
Definition: G4ErrorTrajErr.hh:44
G4ThreeVector
CLHEP::Hep3Vector G4ThreeVector
Definition: G4ThreeVector.hh:42
G4double
double G4double
Definition: G4Types.hh:64
G4Vector3D
HepGeom::Vector3D< G4double > G4Vector3D
Definition: G4Vector3D.hh:35
G4endl
#define G4endl
Definition: G4ios.hh:52
G4cout
G4DLLIMPORT std::ostream G4cout
CLHEP::Hep3Vector::z
double z() const
CLHEP::Hep3Vector::theta
double theta() const
CLHEP::Hep3Vector::x
double x() const
CLHEP::Hep3Vector::y
double y() const
CLHEP::Hep3Vector::mag
double mag() const
G4ErrorFreeTrajParam::GetLambda
G4double GetLambda() const
Definition: G4ErrorFreeTrajParam.hh:73
G4ErrorFreeTrajParam::GetDirection
G4Vector3D GetDirection() const
Definition: G4ErrorFreeTrajParam.hh:70
G4ErrorFreeTrajState::GetParameters
G4ErrorFreeTrajParam GetParameters() const
Definition: G4ErrorFreeTrajState.hh:108
G4ErrorTrajState::fError
G4ErrorTrajErr fError
Definition: G4ErrorTrajState.hh:128
G4FieldManager::GetDetectorField
const G4Field * GetDetectorField() const
G4Field::GetFieldValue
virtual void GetFieldValue(const double Point[4], double *fieldArr) const =0
G4TransportationManager::GetTransportationManager
static G4TransportationManager * GetTransportationManager()
Definition: G4TransportationManager.cc:95
G4TransportationManager::GetFieldManager
G4FieldManager * GetFieldManager() const
HepGeom::BasicVector3D::cross
BasicVector3D< T > cross(const BasicVector3D< T > &v) const
Definition: BasicVector3D.h:275

◆ ~G4ErrorFreeTrajState()

G4ErrorFreeTrajState::~G4ErrorFreeTrajState ( )
inline

Definition at line 79 of file G4ErrorFreeTrajState.hh.

79{}

Member Function Documentation

◆ Dump()

void G4ErrorFreeTrajState::Dump ( std::ostream &  out = G4cout) const
virtual

Implements G4ErrorTrajState.

Definition at line 171 of file G4ErrorFreeTrajState.cc.

172{
173 out << *this;
174}

◆ GetParameters()

G4ErrorFreeTrajParam G4ErrorFreeTrajState::GetParameters ( ) const
inline

Definition at line 108 of file G4ErrorFreeTrajState.hh.

109 { return fTrajParam; }

Referenced by G4ErrorSurfaceTrajState::BuildErrorMatrix(), and G4ErrorFreeTrajState().

◆ GetTransfMat()

G4ErrorMatrix G4ErrorFreeTrajState::GetTransfMat ( ) const
inline

Definition at line 111 of file G4ErrorFreeTrajState.hh.

112 { return theTransfMat; }

◆ PropagateError()

G4int G4ErrorFreeTrajState::PropagateError ( const G4Track *  aTrack)
virtual

Reimplemented from G4ErrorTrajState.

Definition at line 204 of file G4ErrorFreeTrajState.cc.

205{
206 G4double stepLengthCm = aTrack->GetStep()->GetStepLength()/cm;
207 if( G4ErrorPropagatorData::GetErrorPropagatorData()->GetStage() == G4ErrorStage_Deflation ) stepLengthCm *= -1.;
208
209 G4double kCarTolerance = G4GeometryTolerance::GetInstance()->GetSurfaceTolerance();
210
211 if( std::fabs(stepLengthCm) <= kCarTolerance/cm ) return 0;
212
213#ifdef G4EVERBOSE
214 if( iverbose >= 2 )G4cout << " G4ErrorFreeTrajState::PropagateError " << G4endl;
215#endif
216
217 // * *** ERROR PROPAGATION ON A HELIX ASSUMING SC VARIABLES
218 G4Point3D vposPost = aTrack->GetPosition()/cm;
219 G4Vector3D vpPost = aTrack->GetMomentum()/GeV;
220 // G4Point3D vposPre = fPosition/cm;
221 // G4Vector3D vpPre = fMomentum/GeV;
222 G4Point3D vposPre = aTrack->GetStep()->GetPreStepPoint()->GetPosition()/cm;
223 G4Vector3D vpPre = aTrack->GetStep()->GetPreStepPoint()->GetMomentum()/GeV;
224 //correct to avoid propagation along Z
225 if( vpPre.mag() == vpPre.z() ) vpPre.setX( 1.E-6*MeV );
226 if( vpPost.mag() == vpPost.z() ) vpPost.setX( 1.E-6*MeV );
227
228 G4double pPre = vpPre.mag();
229 G4double pPost = vpPost.mag();
230#ifdef G4EVERBOSE
231 if( iverbose >= 2 ) {
232 G4cout << "G4EP: vposPre " << vposPre << G4endl
233 << "G4EP: vposPost " << vposPost << G4endl;
234 G4cout << "G4EP: vpPre " << vpPre << G4endl
235 << "G4EP: vpPost " << vpPost << G4endl;
236 G4cout << " err start step " << fError << G4endl;
237 G4cout << "G4EP: stepLengthCm " << stepLengthCm << G4endl;
238 }
239#endif
240
241 if( pPre == 0. || pPost == 0 ) return 2;
242 G4double pInvPre = 1./pPre;
243 G4double pInvPost = 1./pPost;
244 G4double deltaPInv = pInvPost - pInvPre;
245
246 G4Vector3D vpPreNorm = vpPre * pInvPre;
247 G4Vector3D vpPostNorm = vpPost * pInvPost;
248 // if( iverbose >= 2 ) G4cout << "G4EP: vpPreNorm " << vpPreNorm << " vpPostNorm " << vpPostNorm << G4endl;
249 //return if propagation along Z??
250 if( 1. - std::fabs(vpPostNorm.z()) < kCarTolerance ) return 4;
251 G4double sinpPre = std::sin( vpPreNorm.theta() ); //cosine perpendicular to pPre = sine pPre
252 G4double sinpPost = std::sin( vpPostNorm.theta() ); //cosine perpendicular to pPost = sine pPost
253 G4double sinpPostInv = 1./std::sin( vpPreNorm.theta() );
254
255#ifdef G4EVERBOSE
256 if( iverbose >= 2 ) G4cout << "G4EP: cosl " << sinpPre << " cosl0 " << sinpPost << G4endl;
257#endif
258 //* *** DEFINE TRANSFORMATION MATRIX BETWEEN X1 AND X2 FOR
259 //* *** NEUTRAL PARTICLE OR FIELDFREE REGION
260 G4ErrorMatrix transf(5, 5, 0 );
261
262 transf[3][2] = stepLengthCm * sinpPost;
263 transf[4][1] = stepLengthCm;
264 for( size_t ii=0;ii < 5; ii++ ){
265 transf[ii][ii] = 1.;
266 }
267#ifdef G4EVERBOSE
268 if( iverbose >= 2 ) {
269 G4cout << "G4EP: transf matrix neutral " << transf;
270 }
271#endif
272
273 // charge X propagation direction
274 G4double charge = aTrack->GetDynamicParticle()->GetCharge();
275 if( G4ErrorPropagatorData::GetErrorPropagatorData()->GetMode() == G4ErrorMode_PropBackwards ) {
276 charge *= -1.;
277 }
278 // G4cout << " charge " << charge << G4endl;
279 //t check if particle has charge
280 //t if( charge == 0 ) goto 45;
281 // check if the magnetic field is = 0.
282
283 //position is from geant4, it is assumed to be in mm (for debugging, eventually it will not be transformed)
284 G4double pos1[3]; pos1[0] = vposPre.x()*cm; pos1[1] = vposPre.y()*cm; pos1[2] = vposPre.z()*cm;
285 G4double pos2[3]; pos2[0] = vposPost.x()*cm; pos2[1] = vposPost.y()*cm; pos2[2] = vposPost.z()*cm;
286 G4double h1[3], h2[3];
287
288 const G4Field* field = G4TransportationManager::GetTransportationManager()->GetFieldManager()->GetDetectorField();
289 if( !field ) return 0; //goto 45
290
291 // calculate transformation except it NEUTRAL PARTICLE OR FIELDFREE REGION
292 if( charge != 0. && field ) {
293
294 field->GetFieldValue( pos1, h1 );
295 field->GetFieldValue( pos2, h2 );
296 G4ThreeVector HPre = G4ThreeVector( h1[0], h1[1], h1[2] ) / tesla *10.; //10. is to get same dimensions as GEANT3 (kilogauss)
297 G4ThreeVector HPost= G4ThreeVector( h2[0], h2[1], h2[2] ) / tesla *10.;
298 G4double magHPre = HPre.mag();
299 G4double magHPost = HPost.mag();
300#ifdef G4EVERBOSE
301 if( iverbose >= 2 ) G4cout << "G4EP: HPre " << HPre << G4endl
302 << "G4EP: HPost " << HPost << G4endl;
303#endif
304
305 if( magHPre + magHPost != 0. ) {
306
307 //* *** CHECK WHETHER H*ALFA/P IS TOO DIFFERENT AT X1 AND X2
308 G4double gam;
309 if( magHPost != 0. ){
310 gam = HPost * vpPostNorm / magHPost;
311 }else {
312 gam = HPre * vpPreNorm / magHPre;
313 }
314
315 // G4eMagneticLimitsProcess will limit the step, but based on an straight line trajectory
316 G4double alphaSqr = 1. - gam * gam;
317 G4double diffHSqr = ( HPre * pInvPre - HPost * pInvPost ).mag2();
318 G4double delhp6Sqr = 300.*300.;
319#ifdef G4EVERBOSE
320 if( iverbose >= 2 ) G4cout << " G4EP: gam " << gam << " alphaSqr " << alphaSqr << " diffHSqr " << diffHSqr << G4endl;
321#endif
322 if( diffHSqr * alphaSqr > delhp6Sqr ) return 3;
323
324
325 //* *** DEFINE AVERAGE MAGNETIC FIELD AND GRADIENT
326 G4double pInvAver = 1./(pInvPre + pInvPost );
327 G4double CFACT8 = 2.997925E-4;
328 //G4double HAver
329 G4ThreeVector vHAverNorm( (HPre*pInvPre + HPost*pInvPost ) * pInvAver * charge * CFACT8 );
330 G4double HAver = vHAverNorm.mag();
331 G4double invHAver = 1./HAver;
332 vHAverNorm *= invHAver;
333#ifdef G4EVERBOSE
334 if( iverbose >= 2 ) G4cout << " G4EP: HaverNorm " << vHAverNorm << " magHAver " << HAver << " charge " << charge<< G4endl;
335#endif
336
337 G4double pAver = (pPre+pPost)*0.5;
338 G4double QAver = -HAver/pAver;
339 G4double thetaAver = QAver * stepLengthCm;
340 G4double sinThetaAver = std::sin(thetaAver);
341 G4double cosThetaAver = std::cos(thetaAver);
342 G4double gamma = vHAverNorm * vpPostNorm;
343 G4ThreeVector AN2 = vHAverNorm.cross( vpPostNorm );
344
345#ifdef G4EVERBOSE
346 if( iverbose >= 2 ) G4cout << " G4EP: AN2 " << AN2 << G4endl;
347#endif
348 G4double AU = 1./vpPreNorm.perp();
349 //t G4ThreeVector vU( vpPreNorm.cross( G4ThreeVector(0.,0.,1.) ) * AU );
350 G4ThreeVector vUPre( -AU*vpPreNorm.y(),
351 AU*vpPreNorm.x(),
352 0. );
353 G4ThreeVector vVPre( -vpPreNorm.z()*vUPre.y(),
354 vpPreNorm.z()*vUPre.x(),
355 vpPreNorm.x()*vUPre.y() - vpPreNorm.y()*vUPre.x() );
356
357 //
358 AU = 1./vpPostNorm.perp();
359 //t G4ThreeVector vU( vpPostNorm.cross( G4ThreeVector(0.,0.,1.) ) * AU );
360 G4ThreeVector vUPost( -AU*vpPostNorm.y(),
361 AU*vpPostNorm.x(),
362 0. );
363 G4ThreeVector vVPost( -vpPostNorm.z()*vUPost.y(),
364 vpPostNorm.z()*vUPost.x(),
365 vpPostNorm.x()*vUPost.y() - vpPostNorm.y()*vUPost.x() );
366#ifdef G4EVERBOSE
367 //- G4cout << " vpPostNorm " << vpPostNorm << G4endl;
368 if( iverbose >= 2 ) G4cout << " G4EP: AU " << AU << " vUPre " << vUPre << " vVPre " << vVPre << " vUPost " << vUPost << " vVPost " << vVPost << G4endl;
369#endif
370 G4Point3D deltaPos( vposPre - vposPost );
371
372 // * *** COMPLETE TRANSFORMATION MATRIX BETWEEN ERRORS AT X1 AND X2
373 // * *** FIELD GRADIENT PERPENDICULAR TO TRACK IS PRESENTLY NOT
374 // * *** TAKEN INTO ACCOUNT
375
376 G4double QP = QAver * pAver; // = -HAver
377#ifdef G4EVERBOSE
378 if( iverbose >= 2) G4cout << " G4EP: QP " << QP << " QAver " << QAver << " pAver " << pAver << G4endl;
379#endif
380 G4double ANV = -( vHAverNorm.x()*vUPost.x() + vHAverNorm.y()*vUPost.y() );
381 G4double ANU = ( vHAverNorm.x()*vVPost.x() + vHAverNorm.y()*vVPost.y() + vHAverNorm.z()*vVPost.z() );
382 G4double OMcosThetaAver = 1. - cosThetaAver;
383#ifdef G4EVERBOSE
384 if( iverbose >= 2) G4cout << "G4EP: OMcosThetaAver " << OMcosThetaAver << " cosThetaAver " << cosThetaAver << " thetaAver " << thetaAver << " QAver " << QAver << " stepLengthCm " << stepLengthCm << G4endl;
385#endif
386 G4double TMSINT = thetaAver - sinThetaAver;
387#ifdef G4EVERBOSE
388 if( iverbose >= 2 ) G4cout << " G4EP: ANV " << ANV << " ANU " << ANU << G4endl;
389#endif
390
391 G4ThreeVector vHUPre( -vHAverNorm.z() * vUPre.y(),
392 vHAverNorm.z() * vUPre.x(),
393 vHAverNorm.x() * vUPre.y() - vHAverNorm.y() * vUPre.x() );
394#ifdef G4EVERBOSE
395 // if( iverbose >= 2 ) G4cout << "G4EP: HUPre(1) " << vHUPre.x() << " " << vHAverNorm.z() << " " << vUPre.y() << G4endl;
396#endif
397 G4ThreeVector vHVPre( vHAverNorm.y() * vVPre.z() - vHAverNorm.z() * vVPre.y(),
398 vHAverNorm.z() * vVPre.x() - vHAverNorm.x() * vVPre.z(),
399 vHAverNorm.x() * vVPre.y() - vHAverNorm.y() * vVPre.x() );
400#ifdef G4EVERBOSE
401 if( iverbose >= 2 ) G4cout << " G4EP: HUPre " << vHUPre << " HVPre " << vHVPre << G4endl;
402#endif
403
404 //------------------- COMPUTE MATRIX
405 //---------- 1/P
406
407 transf[0][0] = 1.-deltaPInv*pAver*(1.+(vpPostNorm.x()*deltaPos.x()+vpPostNorm.y()*deltaPos.y()+vpPostNorm.z()*deltaPos.z())/stepLengthCm)
408 +2.*deltaPInv*pAver;
409
410 transf[0][1] = -deltaPInv/thetaAver*
411 ( TMSINT*gamma*(vHAverNorm.x()*vVPre.x()+vHAverNorm.y()*vVPre.y()+vHAverNorm.z()*vVPre.z()) +
412 sinThetaAver*(vVPre.x()*vpPostNorm.x()+vVPre.y()*vpPostNorm.y()+vVPre.z()*vpPostNorm.z()) +
413 OMcosThetaAver*(vHVPre.x()*vpPostNorm.x()+vHVPre.y()*vpPostNorm.y()+vHVPre.z()*vpPostNorm.z()) );
414
415 transf[0][2] = -sinpPre*deltaPInv/thetaAver*
416 ( TMSINT*gamma*(vHAverNorm.x()*vUPre.x()+vHAverNorm.y()*vUPre.y() ) +
417 sinThetaAver*(vUPre.x()*vpPostNorm.x()+vUPre.y()*vpPostNorm.y() ) +
418 OMcosThetaAver*(vHUPre.x()*vpPostNorm.x()+vHUPre.y()*vpPostNorm.y()+vHUPre.z()*vpPostNorm.z()) );
419
420 transf[0][3] = -deltaPInv/stepLengthCm*(vUPre.x()*vpPostNorm.x()+vUPre.y()*vpPostNorm.y() );
421
422 transf[0][4] = -deltaPInv/stepLengthCm*(vVPre.x()*vpPostNorm.x()+vVPre.y()*vpPostNorm.y()+vVPre.z()*vpPostNorm.z());
423
424 // *** Lambda
425 transf[1][0] = -QP*ANV*(vpPostNorm.x()*deltaPos.x()+vpPostNorm.y()*deltaPos.y()+vpPostNorm.z()*deltaPos.z())
426 *(1.+deltaPInv*pAver);
427#ifdef G4EVERBOSE
428 if(iverbose >= 3) G4cout << "ctransf10= " << transf[1][0] << " " << -QP<< " " << ANV<< " " << vpPostNorm.x()<< " " << deltaPos.x()<< " " << vpPostNorm.y()<< " " << deltaPos.y()<< " " << vpPostNorm.z()<< " " << deltaPos.z()
429 << " " << deltaPInv<< " " << pAver << G4endl;
430#endif
431
432 transf[1][1] = cosThetaAver*(vVPre.x()*vVPost.x()+vVPre.y()*vVPost.y()+vVPre.z()*vVPost.z()) +
433 sinThetaAver*(vHVPre.x()*vVPost.x()+vHVPre.y()*vVPost.y()+vHVPre.z()*vVPost.z()) +
434 OMcosThetaAver*(vHAverNorm.x()*vVPre.x()+vHAverNorm.y()*vVPre.y()+vHAverNorm.z()*vVPre.z())*
435 (vHAverNorm.x()*vVPost.x()+vHAverNorm.y()*vVPost.y()+vHAverNorm.z()*vVPost.z()) +
436 ANV*( -sinThetaAver*(vVPre.x()*vpPostNorm.x()+vVPre.y()*vpPostNorm.y()+vVPre.z()*vpPostNorm.z()) +
437 OMcosThetaAver*(vVPre.x()*AN2.x()+vVPre.y()*AN2.y()+vVPre.z()*AN2.z()) -
438 TMSINT*gamma*(vHAverNorm.x()*vVPre.x()+vHAverNorm.y()*vVPre.y()+vHAverNorm.z()*vVPre.z()) );
439
440 transf[1][2] = cosThetaAver*(vUPre.x()*vVPost.x()+vUPre.y()*vVPost.y() ) +
441 sinThetaAver*(vHUPre.x()*vVPost.x()+vHUPre.y()*vVPost.y()+vHUPre.z()*vVPost.z()) +
442 OMcosThetaAver*(vHAverNorm.x()*vUPre.x()+vHAverNorm.y()*vUPre.y() )*
443 (vHAverNorm.x()*vVPost.x()+vHAverNorm.y()*vVPost.y()+vHAverNorm.z()*vVPost.z()) +
444 ANV*( -sinThetaAver*(vUPre.x()*vpPostNorm.x()+vUPre.y()*vpPostNorm.y() ) +
445 OMcosThetaAver*(vUPre.x()*AN2.x()+vUPre.y()*AN2.y() ) -
446 TMSINT*gamma*(vHAverNorm.x()*vUPre.x()+vHAverNorm.y()*vUPre.y() ) );
447 transf[1][2] = sinpPre*transf[1][2];
448
449 transf[1][3] = -QAver*ANV*(vUPre.x()*vpPostNorm.x()+vUPre.y()*vpPostNorm.y() );
450
451 transf[1][4] = -QAver*ANV*(vVPre.x()*vpPostNorm.x()+vVPre.y()*vpPostNorm.y()+vVPre.z()*vpPostNorm.z());
452
453 // *** Phi
454
455 transf[2][0] = -QP*ANU*(vpPostNorm.x()*deltaPos.x()+vpPostNorm.y()*deltaPos.y()+vpPostNorm.z()*deltaPos.z())*sinpPostInv
456 *(1.+deltaPInv*pAver);
457#ifdef G4EVERBOSE
458 if(iverbose >= 3)G4cout <<"ctransf20= " << transf[2][0] <<" "<< -QP<<" "<<ANU<<" "<<vpPostNorm.x()<<" "<<deltaPos.x()<<" "<<vpPostNorm.y()<<" "<<deltaPos.y()<<" "<<vpPostNorm.z()<<" "<<deltaPos.z()<<" "<<sinpPostInv
459 <<" "<<deltaPInv<<" "<<pAver<< G4endl;
460#endif
461 transf[2][1] = cosThetaAver*(vVPre.x()*vUPost.x()+vVPre.y()*vUPost.y() ) +
462 sinThetaAver*(vHVPre.x()*vUPost.x()+vHVPre.y()*vUPost.y() ) +
463 OMcosThetaAver*(vHAverNorm.x()*vVPre.x()+vHAverNorm.y()*vVPre.y()+vHAverNorm.z()*vVPre.z())*
464 (vHAverNorm.x()*vUPost.x()+vHAverNorm.y()*vUPost.y() ) +
465 ANU*( -sinThetaAver*(vVPre.x()*vpPostNorm.x()+vVPre.y()*vpPostNorm.y()+vVPre.z()*vpPostNorm.z()) +
466 OMcosThetaAver*(vVPre.x()*AN2.x()+vVPre.y()*AN2.y()+vVPre.z()*AN2.z()) -
467 TMSINT*gamma*(vHAverNorm.x()*vVPre.x()+vHAverNorm.y()*vVPre.y()+vHAverNorm.z()*vVPre.z()) );
468 transf[2][1] = sinpPostInv*transf[2][1];
469
470 transf[2][2] = cosThetaAver*(vUPre.x()*vUPost.x()+vUPre.y()*vUPost.y() ) +
471 sinThetaAver*(vHUPre.x()*vUPost.x()+vHUPre.y()*vUPost.y() ) +
472 OMcosThetaAver*(vHAverNorm.x()*vUPre.x()+vHAverNorm.y()*vUPre.y() )*
473 (vHAverNorm.x()*vUPost.x()+vHAverNorm.y()*vUPost.y() ) +
474 ANU*( -sinThetaAver*(vUPre.x()*vpPostNorm.x()+vUPre.y()*vpPostNorm.y() ) +
475 OMcosThetaAver*(vUPre.x()*AN2.x()+vUPre.y()*AN2.y() ) -
476 TMSINT*gamma*(vHAverNorm.x()*vUPre.x()+vHAverNorm.y()*vUPre.y() ) );
477 transf[2][2] = sinpPostInv*sinpPre*transf[2][2];
478
479 transf[2][3] = -QAver*ANU*(vUPre.x()*vpPostNorm.x()+vUPre.y()*vpPostNorm.y() )*sinpPostInv;
480#ifdef G4EVERBOSE
481 if(iverbose >= 3)G4cout <<"ctransf23= " << transf[2][3] <<" "<< -QAver<<" "<<ANU<<" "<<vUPre.x()<<" "<<vpPostNorm.x()<<" "<< vUPre.y()<<" "<<vpPostNorm.y()<<" "<<sinpPostInv<<G4endl;
482#endif
483
484 transf[2][4] = -QAver*ANU*(vVPre.x()*vpPostNorm.x()+vVPre.y()*vpPostNorm.y()+vVPre.z()*vpPostNorm.z())*sinpPostInv;
485
486 // *** Yt
487
488 transf[3][0] = pAver*(vUPost.x()*deltaPos.x()+vUPost.y()*deltaPos.y() )
489 *(1.+deltaPInv*pAver);
490#ifdef G4EVERBOSE
491 if(iverbose >= 3) G4cout <<"ctransf30= " << transf[3][0] <<" "<< pAver<<" "<<vUPost.x()<<" "<<deltaPos.x()<<" "<<vUPost.y()<<" "<<deltaPos.y()
492 <<" "<<deltaPInv<<" "<<pAver<<G4endl;
493#endif
494
495 transf[3][1] = ( sinThetaAver*(vVPre.x()*vUPost.x()+vVPre.y()*vUPost.y() ) +
496 OMcosThetaAver*(vHVPre.x()*vUPost.x()+vHVPre.y()*vUPost.y() ) +
497 TMSINT*(vHAverNorm.x()*vUPost.x()+vHAverNorm.y()*vUPost.y() )*
498 (vHAverNorm.x()*vVPre.x()+vHAverNorm.y()*vVPre.y()+vHAverNorm.z()*vVPre.z()) )/QAver;
499
500 transf[3][2] = ( sinThetaAver*(vUPre.x()*vUPost.x()+vUPre.y()*vUPost.y() ) +
501 OMcosThetaAver*(vHUPre.x()*vUPost.x()+vHUPre.y()*vUPost.y() ) +
502 TMSINT*(vHAverNorm.x()*vUPost.x()+vHAverNorm.y()*vUPost.y() )*
503 (vHAverNorm.x()*vUPre.x()+vHAverNorm.y()*vUPre.y() ) )*sinpPre/QAver;
504#ifdef G4EVERBOSE
505 if(iverbose >= 3) G4cout <<"ctransf32= " << transf[3][2] <<" "<< sinThetaAver<<" "<<vUPre.x()<<" "<<vUPost.x()<<" "<<vUPre.y()<<" "<<vUPost.y() <<" "<<
506 OMcosThetaAver<<" "<<vHUPre.x()<<" "<<vUPost.x()<<" "<<vHUPre.y()<<" "<<vUPost.y() <<" "<<
507 TMSINT<<" "<<vHAverNorm.x()<<" "<<vUPost.x()<<" "<<vHAverNorm.y()<<" "<<vUPost.y() <<" "<<
508 vHAverNorm.x()<<" "<<vUPre.x()<<" "<<vHAverNorm.y()<<" "<<vUPre.y() <<" "<<sinpPre<<" "<<QAver<<G4endl;
509#endif
510
511 transf[3][3] = (vUPre.x()*vUPost.x()+vUPre.y()*vUPost.y() );
512
513 transf[3][4] = (vVPre.x()*vUPost.x()+vVPre.y()*vUPost.y() );
514
515 // *** Zt
516 transf[4][0] = pAver*(vVPost.x()*deltaPos.x()+vVPost.y()*deltaPos.y()+vVPost.z()*deltaPos.z())
517 *(1.+deltaPInv*pAver);
518
519 transf[4][1] = ( sinThetaAver*(vVPre.x()*vVPost.x()+vVPre.y()*vVPost.y()+vVPre.z()*vVPost.z()) +
520 OMcosThetaAver*(vHVPre.x()*vVPost.x()+vHVPre.y()*vVPost.y()+vHVPre.z()*vVPost.z()) +
521 TMSINT*(vHAverNorm.x()*vVPost.x()+vHAverNorm.y()*vVPost.y()+vHAverNorm.z()*vVPost.z())*
522 (vHAverNorm.x()*vVPre.x()+vHAverNorm.y()*vVPre.y()+vHAverNorm.z()*vVPre.z()) )/QAver;
523#ifdef G4EVERBOSE
524 if(iverbose >= 3)G4cout <<"ctransf41= " << transf[4][1] <<" "<< sinThetaAver<<" "<< OMcosThetaAver <<" "<<TMSINT<<" "<< vVPre <<" "<<vVPost <<" "<<vHVPre<<" "<<vHAverNorm <<" "<< QAver<<G4endl;
525#endif
526
527 transf[4][2] = ( sinThetaAver*(vUPre.x()*vVPost.x()+vUPre.y()*vVPost.y() ) +
528 OMcosThetaAver*(vHUPre.x()*vVPost.x()+vHUPre.y()*vVPost.y()+vHUPre.z()*vVPost.z()) +
529 TMSINT*(vHAverNorm.x()*vVPost.x()+vHAverNorm.y()*vVPost.y()+vHAverNorm.z()*vVPost.z())*
530 (vHAverNorm.x()*vUPre.x()+vHAverNorm.y()*vUPre.y() ) )*sinpPre/QAver;
531
532 transf[4][3] = (vUPre.x()*vVPost.x()+vUPre.y()*vVPost.y() );
533
534 transf[4][4] = (vVPre.x()*vVPost.x()+vVPre.y()*vVPost.y()+vVPre.z()*vVPost.z());
535 // if(iverbose >= 3) G4cout <<"ctransf44= " << transf[4][4] <<" "<< vVPre.x() <<" "<<vVPost.x() <<" "<< vVPre.y() <<" "<< vVPost.y() <<" "<< vVPre.z() <<" "<< vVPost.z() << G4endl;
536
537
538#ifdef G4EVERBOSE
539 if( iverbose >= 1 ) G4cout << "G4EP: transf matrix computed " << transf << G4endl;
540#endif
541 /* for( G4int ii=0;ii<5;ii++){
542 for( G4int jj=0;jj<5;jj++){
543 G4cout << transf[ii][jj] << " ";
544 }
545 G4cout << G4endl;
546 } */
547 }
548 }
549 // end of calculate transformation except it NEUTRAL PARTICLE OR FIELDFREE REGION
550 /* if( iverbose >= 1 ) G4cout << "G4EP: transf not updated but initialized " << theFirstStep << G4endl;
551 if( theFirstStep ) {
552 theTransfMat = transf;
553 theFirstStep = false;
554 }else{
555 theTransfMat = theTransfMat * transf;
556 if( iverbose >= 1 ) G4cout << "G4EP: transf matrix accumulated" << theTransfMat << G4endl;
557 }
558 */
559 theTransfMat = transf;
560#ifdef G4EVERBOSE
561 if( iverbose >= 1 ) G4cout << "G4EP: error matrix before transformation " << fError << G4endl;
562 if( iverbose >= 2 ) G4cout << " tf * err " << theTransfMat * fError << G4endl
563 << " transf matrix " << theTransfMat.T() << G4endl;
564#endif
565
566 fError = fError.similarity(theTransfMat).T();
567 //- fError = transf * fError * transf.T();
568#ifdef G4EVERBOSE
569 if( iverbose >= 1 ) G4cout << "G4EP: error matrix propagated " << fError << G4endl;
570#endif
571
572 //? S = B*S*BT S.similarity(B)
573 //? R = S
574 // not needed * *** TRANSFORM ERROR MATRIX FROM INTERNAL TO EXTERNAL VARIABLES;
575
576 PropagateErrorMSC( aTrack );
577
578 PropagateErrorIoni( aTrack );
579
580 return 0;
581}
G4ErrorMode_PropBackwards
@ G4ErrorMode_PropBackwards
Definition: G4ErrorPropagatorData.hh:48
G4ErrorStage_Deflation
@ G4ErrorStage_Deflation
Definition: G4ErrorPropagatorData.hh:58
CLHEP::Hep3Vector::cross
Hep3Vector cross(const Hep3Vector &) const
G4DynamicParticle::GetCharge
G4double GetCharge() const
G4ErrorMatrix::T
G4ErrorMatrix T() const
Definition: G4ErrorMatrix.cc:374
G4ErrorPropagatorData::GetErrorPropagatorData
static G4ErrorPropagatorData * GetErrorPropagatorData()
Definition: G4ErrorPropagatorData.cc:53
G4ErrorSymMatrix::similarity
G4ErrorSymMatrix similarity(const G4ErrorMatrix &m1) const
Definition: G4ErrorSymMatrix.cc:589
G4ErrorSymMatrix::T
G4ErrorSymMatrix T() const
G4GeometryTolerance::GetSurfaceTolerance
G4double GetSurfaceTolerance() const
Definition: G4GeometryTolerance.cc:87
G4GeometryTolerance::GetInstance
static G4GeometryTolerance * GetInstance()
Definition: G4GeometryTolerance.cc:73
G4StepPoint::GetMomentum
G4ThreeVector GetMomentum() const
G4StepPoint::GetPosition
const G4ThreeVector & GetPosition() const
G4Step::GetPreStepPoint
G4StepPoint * GetPreStepPoint() const
G4Step::GetStepLength
G4double GetStepLength() const
G4Track::GetPosition
const G4ThreeVector & GetPosition() const
G4Track::GetMomentum
G4ThreeVector GetMomentum() const
G4Track::GetDynamicParticle
const G4DynamicParticle * GetDynamicParticle() const
G4Track::GetStep
const G4Step * GetStep() const

Referenced by G4ErrorPropagator::MakeOneStep().

◆ SetMomentum()

virtual void G4ErrorFreeTrajState::SetMomentum ( const G4Vector3D &  mom)
inlinevirtual

Reimplemented from G4ErrorTrajState.

Definition at line 98 of file G4ErrorFreeTrajState.hh.

99 { SetParameters( fPosition, mom ); }
G4ErrorFreeTrajState::SetParameters
void SetParameters(const G4Point3D &pos, const G4Vector3D &mom)
Definition: G4ErrorFreeTrajState.hh:101

◆ SetParameters()

void G4ErrorFreeTrajState::SetParameters ( const G4Point3D &  pos,
const G4Vector3D &  mom 
)
inline

Definition at line 101 of file G4ErrorFreeTrajState.hh.

102 {
103 fPosition = pos;
104 fMomentum = mom;
105 fTrajParam.SetParameters( pos, mom );
106 }
G4ErrorFreeTrajParam::SetParameters
void SetParameters(const G4Point3D &pos, const G4Vector3D &mom)
Definition: G4ErrorFreeTrajParam.cc:48

Referenced by SetMomentum(), and SetPosition().

◆ SetPosition()

virtual void G4ErrorFreeTrajState::SetPosition ( const G4Point3D  pos)
inlinevirtual

Reimplemented from G4ErrorTrajState.

Definition at line 95 of file G4ErrorFreeTrajState.hh.

96 { SetParameters( pos, fMomentum ); }

◆ Update()

G4int G4ErrorFreeTrajState::Update ( const G4Track *  aTrack)
virtual

Reimplemented from G4ErrorTrajState.

Definition at line 177 of file G4ErrorFreeTrajState.cc.

178{
179 G4int ierr = 0;
180 fTrajParam.Update( aTrack );
181 UpdatePosMom( aTrack->GetPosition(), aTrack->GetMomentum() );
182 return ierr;
183}
G4int
int G4int
Definition: G4Types.hh:66
G4ErrorFreeTrajParam::Update
void Update(const G4Track *aTrack)
Definition: G4ErrorFreeTrajParam.cc:76
G4ErrorTrajState::UpdatePosMom
void UpdatePosMom(const G4Point3D &pos, const G4Vector3D &mom)
Definition: G4ErrorTrajState.cc:65

Referenced by G4ErrorPropagator::MakeOneStep().

Friends And Related Function Documentation

◆ operator<<

std::ostream & operator<< ( std::ostream &  out,
const G4ErrorFreeTrajState &  ts 
)
friend

Definition at line 187 of file G4ErrorFreeTrajState.cc.

188{
189 std::ios::fmtflags orig_flags = out.flags();
190
191 out.setf(std::ios::fixed,std::ios::floatfield);
192
193 ts.DumpPosMomError( out );
194
195 out << " G4ErrorFreeTrajState: Params: " << ts.fTrajParam << G4endl;
196
197 out.flags(orig_flags);
198
199 return out;
200}
G4ErrorTrajState::DumpPosMomError
void DumpPosMomError(std::ostream &out=G4cout) const
Definition: G4ErrorTrajState.cc:104
The documentation for this class was generated from the following files: