182 static const G4double epsmin = 1.e-4 , epsmax = 1.e10;
184 static const G4double Zdat[15] = { 4., 6., 13., 20., 26., 29., 32., 38.,47.,
185 50., 56., 64., 74., 79., 82. };
188 static const G4double celectron[15][22] =
189 {{1.125,1.072,1.051,1.047,1.047,1.050,1.052,1.054,
190 1.054,1.057,1.062,1.069,1.075,1.090,1.105,1.111,
191 1.112,1.108,1.100,1.093,1.089,1.087 },
192 {1.408,1.246,1.143,1.096,1.077,1.059,1.053,1.051,
193 1.052,1.053,1.058,1.065,1.072,1.087,1.101,1.108,
194 1.109,1.105,1.097,1.090,1.086,1.082 },
195 {2.833,2.268,1.861,1.612,1.486,1.309,1.204,1.156,
196 1.136,1.114,1.106,1.106,1.109,1.119,1.129,1.132,
197 1.131,1.124,1.113,1.104,1.099,1.098 },
198 {3.879,3.016,2.380,2.007,1.818,1.535,1.340,1.236,
199 1.190,1.133,1.107,1.099,1.098,1.103,1.110,1.113,
200 1.112,1.105,1.096,1.089,1.085,1.098 },
201 {6.937,4.330,2.886,2.256,1.987,1.628,1.395,1.265,
202 1.203,1.122,1.080,1.065,1.061,1.063,1.070,1.073,
203 1.073,1.070,1.064,1.059,1.056,1.056 },
204 {9.616,5.708,3.424,2.551,2.204,1.762,1.485,1.330,
205 1.256,1.155,1.099,1.077,1.070,1.068,1.072,1.074,
206 1.074,1.070,1.063,1.059,1.056,1.052 },
207 {11.72,6.364,3.811,2.806,2.401,1.884,1.564,1.386,
208 1.300,1.180,1.112,1.082,1.073,1.066,1.068,1.069,
209 1.068,1.064,1.059,1.054,1.051,1.050 },
210 {18.08,8.601,4.569,3.183,2.662,2.025,1.646,1.439,
211 1.339,1.195,1.108,1.068,1.053,1.040,1.039,1.039,
212 1.039,1.037,1.034,1.031,1.030,1.036 },
213 {18.22,10.48,5.333,3.713,3.115,2.367,1.898,1.631,
214 1.498,1.301,1.171,1.105,1.077,1.048,1.036,1.033,
215 1.031,1.028,1.024,1.022,1.021,1.024 },
216 {14.14,10.65,5.710,3.929,3.266,2.453,1.951,1.669,
217 1.528,1.319,1.178,1.106,1.075,1.040,1.027,1.022,
218 1.020,1.017,1.015,1.013,1.013,1.020 },
219 {14.11,11.73,6.312,4.240,3.478,2.566,2.022,1.720,
220 1.569,1.342,1.186,1.102,1.065,1.022,1.003,0.997,
221 0.995,0.993,0.993,0.993,0.993,1.011 },
222 {22.76,20.01,8.835,5.287,4.144,2.901,2.219,1.855,
223 1.677,1.410,1.224,1.121,1.073,1.014,0.986,0.976,
224 0.974,0.972,0.973,0.974,0.975,0.987 },
225 {50.77,40.85,14.13,7.184,5.284,3.435,2.520,2.059,
226 1.837,1.512,1.283,1.153,1.091,1.010,0.969,0.954,
227 0.950,0.947,0.949,0.952,0.954,0.963 },
228 {65.87,59.06,15.87,7.570,5.567,3.650,2.682,2.182,
229 1.939,1.579,1.325,1.178,1.108,1.014,0.965,0.947,
230 0.941,0.938,0.940,0.944,0.946,0.954 },
231 {55.60,47.34,15.92,7.810,5.755,3.767,2.760,2.239,
232 1.985,1.609,1.343,1.188,1.113,1.013,0.960,0.939,
233 0.933,0.930,0.933,0.936,0.939,0.949 }};
235 static const G4double cpositron[15][22] = {
236 {2.589,2.044,1.658,1.446,1.347,1.217,1.144,1.110,
237 1.097,1.083,1.080,1.086,1.092,1.108,1.123,1.131,
238 1.131,1.126,1.117,1.108,1.103,1.100 },
239 {3.904,2.794,2.079,1.710,1.543,1.325,1.202,1.145,
240 1.122,1.096,1.089,1.092,1.098,1.114,1.130,1.137,
241 1.138,1.132,1.122,1.113,1.108,1.102 },
242 {7.970,6.080,4.442,3.398,2.872,2.127,1.672,1.451,
243 1.357,1.246,1.194,1.179,1.178,1.188,1.201,1.205,
244 1.203,1.190,1.173,1.159,1.151,1.145 },
245 {9.714,7.607,5.747,4.493,3.815,2.777,2.079,1.715,
246 1.553,1.353,1.253,1.219,1.211,1.214,1.225,1.228,
247 1.225,1.210,1.191,1.175,1.166,1.174 },
248 {17.97,12.95,8.628,6.065,4.849,3.222,2.275,1.820,
249 1.624,1.382,1.259,1.214,1.202,1.202,1.214,1.219,
250 1.217,1.203,1.184,1.169,1.160,1.151 },
251 {24.83,17.06,10.84,7.355,5.767,3.707,2.546,1.996,
252 1.759,1.465,1.311,1.252,1.234,1.228,1.238,1.241,
253 1.237,1.222,1.201,1.184,1.174,1.159 },
254 {23.26,17.15,11.52,8.049,6.375,4.114,2.792,2.155,
255 1.880,1.535,1.353,1.281,1.258,1.247,1.254,1.256,
256 1.252,1.234,1.212,1.194,1.183,1.170 },
257 {22.33,18.01,12.86,9.212,7.336,4.702,3.117,2.348,
258 2.015,1.602,1.385,1.297,1.268,1.251,1.256,1.258,
259 1.254,1.237,1.214,1.195,1.185,1.179 },
260 {33.91,24.13,15.71,10.80,8.507,5.467,3.692,2.808,
261 2.407,1.873,1.564,1.425,1.374,1.330,1.324,1.320,
262 1.312,1.288,1.258,1.235,1.221,1.205 },
263 {32.14,24.11,16.30,11.40,9.015,5.782,3.868,2.917,
264 2.490,1.925,1.596,1.447,1.391,1.342,1.332,1.327,
265 1.320,1.294,1.264,1.240,1.226,1.214 },
266 {29.51,24.07,17.19,12.28,9.766,6.238,4.112,3.066,
267 2.602,1.995,1.641,1.477,1.414,1.356,1.342,1.336,
268 1.328,1.302,1.270,1.245,1.231,1.233 },
269 {38.19,30.85,21.76,15.35,12.07,7.521,4.812,3.498,
270 2.926,2.188,1.763,1.563,1.484,1.405,1.382,1.371,
271 1.361,1.330,1.294,1.267,1.251,1.239 },
272 {49.71,39.80,27.96,19.63,15.36,9.407,5.863,4.155,
273 3.417,2.478,1.944,1.692,1.589,1.480,1.441,1.423,
274 1.409,1.372,1.330,1.298,1.280,1.258 },
275 {59.25,45.08,30.36,20.83,16.15,9.834,6.166,4.407,
276 3.641,2.648,2.064,1.779,1.661,1.531,1.482,1.459,
277 1.442,1.400,1.354,1.319,1.299,1.272 },
278 {56.38,44.29,30.50,21.18,16.51,10.11,6.354,4.542,
279 3.752,2.724,2.116,1.817,1.692,1.554,1.499,1.474,
280 1.456,1.412,1.364,1.328,1.307,1.282 }};
284 static const G4double hecorr[15] = {
285 120.70, 117.50, 105.00, 92.92, 79.23, 74.510, 68.29,
286 57.39, 41.97, 36.14, 24.53, 10.21, -7.855, -16.84,
298 G4double eKineticEnergy = KineticEnergy;
305 G4double tau = 0.5*(w+sqrt(w*w+4.*c)) ;
311 /(eTotalEnergy*eTotalEnergy);
313 /(electron_mass_c2*electron_mass_c2);
320 if (eps<epsmin) sigma = 2.*eps*
eps;
321 else if(eps<epsmax) sigma =
G4Log(1.+2.*eps)-2.*eps/(1.+2.*
eps);
322 else sigma =
G4Log(2.*eps)-1.+1./
eps;
324 sigma *=
ChargeSquare*AtomicNumber*AtomicNumber/(beta2*bg2);
332 while ((iZ>=0)&&(Zdat[iZ]>=AtomicNumber)) iZ -= 1;
338 G4double ratZ = (AtomicNumber-ZZ1)*(AtomicNumber+ZZ1)/
339 ((ZZ2-ZZ1)*(ZZ2+ZZ1));
363 if(eKineticEnergy <= Tlim)
368 while ((iT>=0)&&(Tdat[iT]>=eKineticEnergy)) iT -= 1;
378 G4double ratb2 = (beta2-b2small)/(b2big-b2small);
382 c1 = celectron[iZ][iT];
383 c2 = celectron[iZ+1][iT];
384 cc1 = c1+ratZ*(c2-
c1);
386 c1 = celectron[iZ][iT+1];
387 c2 = celectron[iZ+1][iT+1];
388 cc2 = c1+ratZ*(c2-
c1);
390 corr = cc1+ratb2*(cc2-cc1);
392 sigma *= sigmafactor/corr;
396 c1 = cpositron[iZ][iT];
397 c2 = cpositron[iZ+1][iT];
398 cc1 = c1+ratZ*(c2-
c1);
400 c1 = cpositron[iZ][iT+1];
401 c2 = cpositron[iZ+1][iT+1];
402 cc2 = c1+ratZ*(c2-
c1);
404 corr = cc1+ratb2*(cc2-cc1);
406 sigma *= sigmafactor/corr;
411 c1 = bg2lim*sig0[iZ]*(1.+hecorr[iZ]*(beta2-beta2lim))/bg2;
412 c2 = bg2lim*sig0[iZ+1]*(1.+hecorr[iZ+1]*(beta2-beta2lim))/bg2;
413 if((AtomicNumber >= ZZ1) && (AtomicNumber <= ZZ2))
414 sigma = c1+ratZ*(c2-
c1) ;
415 else if(AtomicNumber < ZZ1)
416 sigma = AtomicNumber*AtomicNumber*c1/(ZZ1*ZZ1);
417 else if(AtomicNumber > ZZ2)
418 sigma = AtomicNumber*AtomicNumber*c2/(ZZ2*ZZ2);
477 distance *= (1.15-9.76e-4*
Zeff);
479 distance *= (1.20-
Zeff*(1.62e-2-9.22e-5*
Zeff));
527 rat = 1.e-3/(rat*(10.+rat)) ;
637 rat = 1.e-3/(rat*(10 + rat)) ;
681 if(
charge > 0.) index = 2;
689 rat = 1.e-3/(rat*(10 + rat)) ;
841 if(tlength < geomStepLength) { tlength = geomStepLength; }
885 G4double sth = sqrt((1.0 - cth)*(1.0 + cth));
891 newDirection.
rotateUz(oldDirection);
934 static const G4double numlim = 0.01;
937 xmeanth = 1.0 - tau*(1.0 - 0.5*tau);
938 x2meanth= 1.0 - tau*(5.0 - 6.25*tau)/3.;
940 xmeanth =
G4Exp(-tau);
941 x2meanth = (1.+2.*
G4Exp(-2.5*tau))/3.;
946 static const G4double rellossmax= 0.50;
947 if(relloss > rellossmax) {
951 G4bool extremesmallstep = false ;
954 if(trueStepLength > tsmall) {
957 theta0 = sqrt(trueStepLength/tsmall)*
ComputeTheta0(tsmall,KineticEnergy);
958 extremesmallstep = true ;
968 if(theta2 <
tausmall) {
return cth; }
970 if(theta0 > theta0max) {
975 if(theta2 > numlim) {
1004 if(std::abs(c-3.) < 0.001) { c = 3.001; }
1005 else if(std::abs(c-2.) < 0.001) { c = 2.001; }
1011 G4double xmean1 = 1.-(1.-(1.+xsi)*ea)*x/eaa;
1016 if(xmean1 <= 0.999*xmeanth) {
1029 G4double xmean2 = (x0 + d - (bx - b1*
d)/(c-2.))/(1. - d);
1035 G4double qprob = xmeanth/(prob*xmean1+(1.-prob)*xmean2);
1048 if(var < numlim*d) {
1050 cth = -1.0 + var*(1.0 - 0.5*var*c)*(2. + (c - xsi)*
x);
1052 cth = 1. + x*(c - xsi - c*
G4Exp(-
G4Log(var + d)/c1));
1096 KineticEnergy*(KineticEnergy+2.*
mass)));
1107 G4double x = std::sqrt(tau*(tau+2.)/((tau+1.)*(tau+1.)));
1113 corr = a*(1.-
G4Exp(-b*x));
1115 corr = c+d*
G4Exp(e*(x-1.));
1124 y *= corr*(1.+
Zeff*(1.84035e-4*
Zeff-1.86427e-2)+0.41125);
1128 G4double theta0 = c_highland*std::abs(
charge)*std::sqrt(y)*invbetacp;
1141 static const G4double third = 1./3.;
1153 static const G4double kappami1 = 1.5;
1165 latcorr =
G4Exp(latcorr)/kappami1;
1166 latcorr += 1.-kappa*etau/kappami1 ;
1175 if(std::abs(r*sth) < latcorr) {
1181 G4double psi = std::acos(latcorr/(r*sth));
1205 static const G4double reps = 1.e-6;
1206 static const G4double rp0 = 2.2747e+4;
1207 static const G4double rp1 = 4.5980e+0;
1208 static const G4double rp2 = 1.5580e+1;
1209 static const G4double rp3 = 7.1287e-1;
1210 static const G4double rp4 =-5.7069e-1;
1215 rej = rp0*
G4Exp(rp1*
G4Log(v)-rp2*v) + v*(rp3+rp4*v);
1229 static const G4double probv1 = 0.305533;
1230 static const G4double probv2 = 0.955176;
1231 static const G4double vhigh = 3.15;
1237 if(random < probv1) {
1242 while (std::abs(v) >= vhigh);
1247 if(random < probv2) {
1254 if(random < 0.5) { Phi = phi+v; }
1255 else { Phi = phi-v; }
void set(double x, double y, double z)
virtual G4double ComputeCrossSectionPerAtom(const G4ParticleDefinition *particle, G4double KineticEnergy, G4double AtomicNumber, G4double AtomicWeight=0., G4double cut=0., G4double emax=DBL_MAX) override
G4double SimpleScattering(G4double xmeanth, G4double x2meanth)
G4double G4Exp(G4double initial_x)
Exponential Function double precision.
T max(const T t1, const T t2)
brief Return the largest of the two arguments
G4double SampleCosineTheta(G4double trueStepLength, G4double KineticEnergy)
std::vector< ExP01TrackerHit * > a
G4ThreeVector fDisplacement
static constexpr double MeV
G4LossTableManager * theManager
Float_t y1[n_points_granero]
G4double ConvertTrueToGeom(G4double &tLength, G4double &gLength)
G4ParticleChangeForMSC * fParticleChange
G4StepPoint * GetPreStepPoint() const
const G4ParticleDefinition * particle
static constexpr double nm
static constexpr double mm
const G4ParticleDefinition * positron
G4double ComputeGeomLimit(const G4Track &, G4double &presafety, G4double limit)
G4double ComputeSafety(const G4ThreeVector &position, G4double limit=DBL_MAX)
G4double GetRadlen() const
static constexpr double hbarc
virtual G4double ComputeGeomPathLength(G4double truePathLength) override
G4double currentKinEnergy
const G4String & GetParticleName() const
G4UrbanAdjointMscModel(const G4String &nam="UrbanMsc")
virtual ~G4UrbanAdjointMscModel()
Hep3Vector & rotateUz(const Hep3Vector &)
G4double GetDEDX(const G4ParticleDefinition *part, G4double kineticEnergy, const G4MaterialCutsCouple *couple)
void SetCurrentCouple(const G4MaterialCutsCouple *)
virtual G4double ComputeTruePathLengthLimit(const G4Track &track, G4double ¤tMinimalStep) override
static constexpr double classic_electr_radius
G4double G4Log(G4double x)
static constexpr double um
G4double GetProductionCut(G4int index) const
static constexpr double proton_mass_c2
virtual void StartTracking(G4Track *) override
G4StepStatus GetStepStatus() const
static G4Pow * GetInstance()
G4ParticleDefinition * GetDefinition() const
const G4MaterialCutsCouple * GetMaterialCutsCouple() const
G4double GetRange(const G4ParticleDefinition *part, G4double kineticEnergy, const G4MaterialCutsCouple *couple)
static constexpr double electron_mass_c2
const G4ThreeVector & GetPosition() const
static constexpr double MeV
static constexpr double twopi
CLHEP::HepRandomEngine * rndmEngineMod
static G4Positron * Positron()
static constexpr double eV
static constexpr double eV
G4double currentRadLength
const G4Step * GetStep() const
void SampleDisplacementNew(G4double sinTheta, G4double phi)
static G4Electron * Electron()
ThreeVector shoot(const G4int Ap, const G4int Af)
G4int currentMaterialIndex
G4double Randomizetlimit()
void SetParticle(const G4ParticleDefinition *)
static constexpr double twopi
G4double GetTransportMeanFreePath(const G4ParticleDefinition *part, G4double kinEnergy)
G4ParticleChangeForMSC * GetParticleChangeForMSC(const G4ParticleDefinition *p=nullptr)
G4MscStepLimitType steppingAlgorithm
G4IonisParamMat * GetIonisation() const
G4double GetSafety() const
G4double GetZeffective() const
virtual void Initialise(const G4ParticleDefinition *, const G4DataVector &) override
G4double ComputeTheta0(G4double truePathLength, G4double KineticEnergy)
void ProposeMomentumDirection(const G4ThreeVector &Pfinal)
G4double GetKineticEnergy() const
const G4MaterialCutsCouple * couple
static G4LossTableManager * Instance()
virtual G4ThreeVector & SampleScattering(const G4ThreeVector &, G4double safety) override
G4ProductionCuts * GetProductionCuts() const
G4bool latDisplasmentbackup
const G4Material * GetMaterial() const
virtual G4double ComputeTrueStepLength(G4double geomStepLength) override
static const G4double eps
G4double GetEnergy(const G4ParticleDefinition *part, G4double range, const G4MaterialCutsCouple *couple)
static constexpr double keV
static constexpr double Bohr_radius
const G4DynamicParticle * GetDynamicParticle() const
void SampleDisplacement(G4double sinTheta, G4double phi)
static constexpr double pi
G4double Z23(G4int Z) const
T min(const T t1, const T t2)
brief Return the smallest of the two arguments
static constexpr double barn