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25 // 25 //
>> 26 //
>> 27 //
26 // ------------------------------------------- 28 // --------------------------------------------------------------
27 // GEANT 4 class implementation file 29 // GEANT 4 class implementation file
>> 30 // CERN Geneva Switzerland
28 // 31 //
29 // History: first implementation, << 32 // History: first implementation,
30 // 21-5-98 V.Grichine 33 // 21-5-98 V.Grichine
31 // 28-05-01, V.Ivanchenko minor changes t << 34 // 28-05-01, V.Ivanchenko minor changes to provide ANSI -wall compilation
32 // 04.03.05, V.Grichine: get local field << 35 // 04.03.05, V.Grichine: get local field interface
33 // 18-05-06 H. Burkhardt: Energy spectrum 36 // 18-05-06 H. Burkhardt: Energy spectrum from function rather than table
>> 37 //
>> 38 //
>> 39 //
34 // 40 //
35 ////////////////////////////////////////////// 41 ///////////////////////////////////////////////////////////////////////////
36 42
37 #include "G4SynchrotronRadiation.hh" 43 #include "G4SynchrotronRadiation.hh"
38 <<
39 #include "G4DipBustGenerator.hh" <<
40 #include "G4Electron.hh" <<
41 #include "G4EmProcessSubType.hh" <<
42 #include "G4Log.hh" <<
43 #include "G4LossTableManager.hh" <<
44 #include "G4Gamma.hh" <<
45 #include "G4PhysicalConstants.hh" 44 #include "G4PhysicalConstants.hh"
46 #include "G4PropagatorInField.hh" <<
47 #include "G4SystemOfUnits.hh" 45 #include "G4SystemOfUnits.hh"
48 #include "G4TransportationManager.hh" <<
49 #include "G4UnitsTable.hh" 46 #include "G4UnitsTable.hh"
50 #include "G4PhysicsModelCatalog.hh" << 47 #include "G4EmProcessSubType.hh"
>> 48 #include "G4DipBustGenerator.hh"
>> 49 #include "G4Log.hh"
>> 50 #include "G4LossTableManager.hh"
51 51
52 ////////////////////////////////////////////// 52 ///////////////////////////////////////////////////////////////////////
>> 53 //
53 // Constructor 54 // Constructor
>> 55 //
>> 56
54 G4SynchrotronRadiation::G4SynchrotronRadiation 57 G4SynchrotronRadiation::G4SynchrotronRadiation(const G4String& processName,
55 << 58 G4ProcessType type):G4VDiscreteProcess (processName, type),
56 : G4VDiscreteProcess(processName, type) << 59 theGamma (G4Gamma::Gamma() )
57 , theGamma(G4Gamma::Gamma()) <<
58 { 60 {
59 G4TransportationManager* transportMgr = << 61 G4TransportationManager* transportMgr =
60 G4TransportationManager::GetTransportation 62 G4TransportationManager::GetTransportationManager();
61 63
62 fFieldPropagator = transportMgr->GetPropagat 64 fFieldPropagator = transportMgr->GetPropagatorInField();
63 65
64 secID = G4PhysicsModelCatalog::GetModelID("m <<
65 SetProcessSubType(fSynchrotronRadiation); 66 SetProcessSubType(fSynchrotronRadiation);
66 verboseLevel = 1; 67 verboseLevel = 1;
67 FirstTime = true; 68 FirstTime = true;
68 FirstTime1 = true; 69 FirstTime1 = true;
69 genAngle = nullptr; 70 genAngle = nullptr;
70 SetAngularGenerator(new G4DipBustGenerator() 71 SetAngularGenerator(new G4DipBustGenerator());
71 theManager = G4LossTableManager::Instance(); 72 theManager = G4LossTableManager::Instance();
72 theManager->Register(this); 73 theManager->Register(this);
73 } 74 }
74 75
75 ////////////////////////////////////////////// 76 /////////////////////////////////////////////////////////////////////////
>> 77 //
76 // Destructor 78 // Destructor
>> 79 //
>> 80
77 G4SynchrotronRadiation::~G4SynchrotronRadiatio 81 G4SynchrotronRadiation::~G4SynchrotronRadiation()
78 { 82 {
79 delete genAngle; 83 delete genAngle;
80 theManager->DeRegister(this); 84 theManager->DeRegister(this);
81 } 85 }
82 86
83 /////////////////////////////// METHODS ////// 87 /////////////////////////////// METHODS /////////////////////////////////
>> 88 //
84 89
85 void G4SynchrotronRadiation::SetAngularGenerat << 90 void
>> 91 G4SynchrotronRadiation::SetAngularGenerator(G4VEmAngularDistribution* p)
86 { 92 {
87 if(p != genAngle) << 93 if(p != genAngle) {
88 { <<
89 delete genAngle; 94 delete genAngle;
90 genAngle = p; 95 genAngle = p;
91 } 96 }
92 } 97 }
93 98
94 G4bool G4SynchrotronRadiation::IsApplicable( << 99 G4bool
95 const G4ParticleDefinition& particle) << 100 G4SynchrotronRadiation::IsApplicable(const G4ParticleDefinition& particle)
96 { 101 {
97 return (particle.GetPDGCharge() != 0.0 && !p << 102 return (particle.GetPDGCharge() != 0.0 && !particle.IsShortLived());
98 } 103 }
99 104
100 ////////////////////////////////////////////// 105 /////////////////////////////////////////////////////////////////////////
>> 106 //
101 // Production of synchrotron X-ray photon 107 // Production of synchrotron X-ray photon
102 // Geant4 internal units. << 108 // GEANT4 internal units.
103 G4double G4SynchrotronRadiation::GetMeanFreePa << 109 //
104 << 110
105 << 111 G4double
>> 112 G4SynchrotronRadiation::GetMeanFreePath(const G4Track& trackData,
>> 113 G4double,
>> 114 G4ForceCondition* condition)
106 { 115 {
107 // gives the MeanFreePath in Geant4 internal << 116 // gives the MeanFreePath in GEANT4 internal units
108 G4double MeanFreePath = DBL_MAX; 117 G4double MeanFreePath = DBL_MAX;
109 118
110 const G4DynamicParticle* aDynamicParticle = 119 const G4DynamicParticle* aDynamicParticle = trackData.GetDynamicParticle();
111 120
112 *condition = NotForced; 121 *condition = NotForced;
113 122
114 G4double gamma = << 123 G4double gamma = aDynamicParticle->GetTotalEnergy()/
115 aDynamicParticle->GetTotalEnergy() / aDyna << 124 aDynamicParticle->GetMass();
116 125
117 G4double particleCharge = aDynamicParticle-> 126 G4double particleCharge = aDynamicParticle->GetDefinition()->GetPDGCharge();
118 127
119 if(gamma < 1.0e3 || 0.0 == particleCharge) << 128 if ( gamma < 1.0e3 || 0.0 == particleCharge) { MeanFreePath = DBL_MAX; }
120 { <<
121 MeanFreePath = DBL_MAX; <<
122 } <<
123 else 129 else
124 { 130 {
125 G4ThreeVector FieldValue; <<
126 const G4Field* pField = nullptr; <<
127 G4bool fieldExertsForce = false; <<
128 131
129 G4FieldManager* fieldMgr = << 132 G4ThreeVector FieldValue;
130 fFieldPropagator->FindAndSetFieldManager << 133 const G4Field* pField = nullptr;
>> 134 G4bool fieldExertsForce = false;
>> 135
>> 136
>> 137 G4FieldManager* fieldMgr =
>> 138 fFieldPropagator->FindAndSetFieldManager(trackData.GetVolume());
131 139
132 if(fieldMgr != nullptr) << 140 if ( fieldMgr != nullptr )
133 { 141 {
134 // If the field manager has no field, th 142 // If the field manager has no field, there is no field !
135 fieldExertsForce = (fieldMgr->GetDetecto <<
136 } <<
137 143
138 if(fieldExertsForce) << 144 fieldExertsForce = ( fieldMgr->GetDetectorField() != nullptr );
>> 145 }
>> 146
>> 147 if ( fieldExertsForce )
139 { 148 {
140 pField = fieldMgr->G << 149 pField = fieldMgr->GetDetectorField();
141 G4ThreeVector globPosition = trackData.G << 150 G4ThreeVector globPosition = trackData.GetPosition();
142 151
143 G4double globPosVec[4], FieldValueVec[6] << 152 G4double globPosVec[4], FieldValueVec[6];
144 153
145 globPosVec[0] = globPosition.x(); 154 globPosVec[0] = globPosition.x();
146 globPosVec[1] = globPosition.y(); 155 globPosVec[1] = globPosition.y();
147 globPosVec[2] = globPosition.z(); 156 globPosVec[2] = globPosition.z();
148 globPosVec[3] = trackData.GetGlobalTime( 157 globPosVec[3] = trackData.GetGlobalTime();
149 158
150 pField->GetFieldValue(globPosVec, FieldV << 159 pField->GetFieldValue( globPosVec, FieldValueVec );
151 160
152 FieldValue = << 161 FieldValue = G4ThreeVector( FieldValueVec[0],
153 G4ThreeVector(FieldValueVec[0], FieldV << 162 FieldValueVec[1],
>> 163 FieldValueVec[2] );
154 164
155 G4ThreeVector unitMomentum = aDynamicPar 165 G4ThreeVector unitMomentum = aDynamicParticle->GetMomentumDirection();
156 G4ThreeVector unitMcrossB = FieldValue. 166 G4ThreeVector unitMcrossB = FieldValue.cross(unitMomentum);
157 G4double perpB = unitMcrossB 167 G4double perpB = unitMcrossB.mag();
158 168
159 static const G4double fLambdaConst = << 169 static const G4double fLambdaConst = std::sqrt(3.0)*eplus/
160 std::sqrt(3.0) * eplus / (2.5 * fine_s << 170 (2.5*fine_structure_const*c_light);
161 << 171
162 if(perpB > 0.0) << 172 if( perpB > 0.0 )
163 { 173 {
164 MeanFreePath = fLambdaConst * << 174 MeanFreePath =
165 aDynamicParticle->GetDe << 175 fLambdaConst*aDynamicParticle->GetDefinition()->GetPDGMass()
166 (perpB * particleCharge << 176 /(perpB*particleCharge*particleCharge);
167 } 177 }
168 if(verboseLevel > 0 && FirstTime) 178 if(verboseLevel > 0 && FirstTime)
169 { 179 {
170 G4cout << "G4SynchrotronRadiation::Get 180 G4cout << "G4SynchrotronRadiation::GetMeanFreePath "
171 << " for particle " << 181 << " for particle "
172 << aDynamicParticle->GetDefinit << 182 << aDynamicParticle->GetDefinition()->GetParticleName()
173 << '\n' << 183 << ":" << '\n' //hbunew
174 << " MeanFreePath = " << G4Bes << 184 << " MeanFreePath = " << G4BestUnit(MeanFreePath, "Length")
175 << G4endl; << 185 << G4endl;
176 if(verboseLevel > 1) 186 if(verboseLevel > 1)
177 { 187 {
178 G4ThreeVector pvec = aDynamicParticl 188 G4ThreeVector pvec = aDynamicParticle->GetMomentum();
179 G4double Btot = FieldValue.getR << 189 G4double Btot = FieldValue.getR();
180 G4double ptot = pvec.getR(); << 190 G4double ptot = pvec.getR();
181 G4double rho = ptot / (MeV * c << 191 G4double rho = ptot / (MeV * c_light * Btot );
182 // full bending radius << 192 // full bending radius
183 G4double Theta = unitMomentum.theta( << 193 G4double Theta=unitMomentum.theta(FieldValue);
184 // angle between particle and field << 194 // angle between particle and field
185 G4cout << " B = " << Btot / tesla < << 195 G4cout << " B = " << Btot/tesla << " Tesla"
186 << " perpB = " << perpB / te << 196 << " perpB = " << perpB/tesla << " Tesla"
187 << " Theta = " << Theta << 197 << " Theta = " << Theta << " std::sin(Theta)="
188 << " std::sin(Theta)=" << std << 198 << std::sin(Theta) << '\n'
189 << " ptot = " << G4BestUnit << 199 << " ptot = " << G4BestUnit(ptot,"Energy")
190 << " rho = " << G4BestUnit << 200 << " rho = " << G4BestUnit(rho,"Length")
>> 201 << G4endl;
191 } 202 }
192 FirstTime = false; << 203 FirstTime=false;
193 } 204 }
194 } 205 }
195 } 206 }
196 return MeanFreePath; 207 return MeanFreePath;
197 } 208 }
198 209
199 ////////////////////////////////////////////// 210 ///////////////////////////////////////////////////////////////////////////////
200 G4VParticleChange* G4SynchrotronRadiation::Pos << 211 //
201 const G4Track& trackData, const G4Step& step << 212 //
>> 213
>> 214 G4VParticleChange*
>> 215 G4SynchrotronRadiation::PostStepDoIt(const G4Track& trackData,
>> 216 const G4Step& stepData )
202 217
203 { 218 {
204 aParticleChange.Initialize(trackData); 219 aParticleChange.Initialize(trackData);
205 220
206 const G4DynamicParticle* aDynamicParticle = 221 const G4DynamicParticle* aDynamicParticle = trackData.GetDynamicParticle();
207 222
208 G4double gamma = aDynamicParticle->GetTotalE << 223 G4double gamma = aDynamicParticle->GetTotalEnergy()/
209 (aDynamicParticle->GetDefin << 224 (aDynamicParticle->GetDefinition()->GetPDGMass());
210 225
211 G4double particleCharge = aDynamicParticle-> 226 G4double particleCharge = aDynamicParticle->GetDefinition()->GetPDGCharge();
212 if(gamma <= 1.0e3 || 0.0 == particleCharge) << 227 if(gamma <= 1.0e3 || 0.0 == particleCharge)
213 { 228 {
214 return G4VDiscreteProcess::PostStepDoIt(tr << 229 return G4VDiscreteProcess::PostStepDoIt(trackData,stepData);
215 } 230 }
216 231
217 G4ThreeVector FieldValue; << 232 G4ThreeVector FieldValue;
218 const G4Field* pField = nullptr; << 233 const G4Field* pField = nullptr;
219 234
220 G4bool fieldExertsForce = false; << 235 G4bool fieldExertsForce = false;
221 G4FieldManager* fieldMgr = << 236 G4FieldManager* fieldMgr =
222 fFieldPropagator->FindAndSetFieldManager(t 237 fFieldPropagator->FindAndSetFieldManager(trackData.GetVolume());
223 238
224 if(fieldMgr != nullptr) << 239 if ( fieldMgr != nullptr )
225 { 240 {
226 // If the field manager has no field, ther 241 // If the field manager has no field, there is no field !
227 fieldExertsForce = (fieldMgr->GetDetectorF << 242 fieldExertsForce = ( fieldMgr->GetDetectorField() != nullptr );
228 } 243 }
229 << 244
230 if(fieldExertsForce) << 245 if ( fieldExertsForce )
231 { 246 {
232 pField = fieldMgr->Get << 247 pField = fieldMgr->GetDetectorField();
233 G4ThreeVector globPosition = trackData.Get << 248 G4ThreeVector globPosition = trackData.GetPosition();
234 G4double globPosVec[4], FieldValueVec[6]; << 249 G4double globPosVec[4], FieldValueVec[6];
235 globPosVec[0] = globPosition.x(); 250 globPosVec[0] = globPosition.x();
236 globPosVec[1] = globPosition.y(); 251 globPosVec[1] = globPosition.y();
237 globPosVec[2] = globPosition.z(); 252 globPosVec[2] = globPosition.z();
238 globPosVec[3] = trackData.GetGlobalTime(); 253 globPosVec[3] = trackData.GetGlobalTime();
239 254
240 pField->GetFieldValue(globPosVec, FieldVal << 255 pField->GetFieldValue( globPosVec, FieldValueVec );
241 FieldValue = << 256 FieldValue = G4ThreeVector( FieldValueVec[0],
242 G4ThreeVector(FieldValueVec[0], FieldVal << 257 FieldValueVec[1],
>> 258 FieldValueVec[2] );
243 259
244 G4ThreeVector unitMomentum = aDynamicParti 260 G4ThreeVector unitMomentum = aDynamicParticle->GetMomentumDirection();
245 G4ThreeVector unitMcrossB = FieldValue.cr << 261 G4ThreeVector unitMcrossB = FieldValue.cross(unitMomentum);
246 G4double perpB = unitMcrossB.m << 262 G4double perpB = unitMcrossB.mag();
247 if(perpB > 0.0) 263 if(perpB > 0.0)
248 { 264 {
249 // M-C of synchrotron photon energy 265 // M-C of synchrotron photon energy
250 G4double energyOfSR = GetRandomEnergySR( << 266
251 gamma, perpB, aDynamicParticle->GetDef << 267 G4double energyOfSR =
>> 268 GetRandomEnergySR(gamma,perpB,
>> 269 aDynamicParticle->GetDefinition()->GetPDGMass());
252 270
253 // check against insufficient energy 271 // check against insufficient energy
254 if(energyOfSR <= 0.0) << 272
>> 273 if( energyOfSR <= 0.0 )
255 { 274 {
256 return G4VDiscreteProcess::PostStepDoI << 275 return G4VDiscreteProcess::PostStepDoIt(trackData,stepData);
257 } 276 }
258 G4double kineticEnergy = aDynamicParticl 277 G4double kineticEnergy = aDynamicParticle->GetKineticEnergy();
259 G4ThreeVector gammaDirection = << 278 G4ThreeVector gammaDirection =
260 genAngle->SampleDirection(aDynamicPart << 279 genAngle->SampleDirection(aDynamicParticle,
>> 280 energyOfSR, 1, 0);
261 281
262 G4ThreeVector gammaPolarization = FieldV 282 G4ThreeVector gammaPolarization = FieldValue.cross(gammaDirection);
263 gammaPolarization = gammaP << 283 gammaPolarization = gammaPolarization.unit();
264 284
265 // create G4DynamicParticle object for t 285 // create G4DynamicParticle object for the SR photon
266 auto aGamma = << 286
267 new G4DynamicParticle(theGamma, gammaD << 287 G4DynamicParticle* aGamma= new G4DynamicParticle ( theGamma,
268 aGamma->SetPolarization(gammaPolarizatio << 288 gammaDirection,
269 gammaPolarizatio << 289 energyOfSR );
>> 290 aGamma->SetPolarization( gammaPolarization.x(),
>> 291 gammaPolarization.y(),
>> 292 gammaPolarization.z() );
270 293
271 aParticleChange.SetNumberOfSecondaries(1 294 aParticleChange.SetNumberOfSecondaries(1);
>> 295 aParticleChange.AddSecondary(aGamma);
272 296
273 // Update the incident particle 297 // Update the incident particle
>> 298
274 G4double newKinEnergy = kineticEnergy - 299 G4double newKinEnergy = kineticEnergy - energyOfSR;
275 300
276 if(newKinEnergy > 0.) << 301 if (newKinEnergy > 0.)
277 { 302 {
278 aParticleChange.ProposeEnergy(newKinEn << 303 aParticleChange.ProposeEnergy( newKinEnergy );
279 } 304 }
280 else 305 else
281 { 306 {
282 aParticleChange.ProposeEnergy(0.); << 307 aParticleChange.ProposeEnergy( 0. );
283 } 308 }
284 <<
285 // Create the G4Track <<
286 G4Track* aSecondaryTrack = new G4Track(a <<
287 aSecondaryTrack->SetTouchableHandle(step <<
288 aSecondaryTrack->SetParentID(trackData.G <<
289 aSecondaryTrack->SetCreatorModelID(secID <<
290 aParticleChange.AddSecondary(aSecondaryT <<
291 <<
292 } 309 }
293 } 310 }
294 return G4VDiscreteProcess::PostStepDoIt(trac << 311 return G4VDiscreteProcess::PostStepDoIt(trackData,stepData);
295 } 312 }
296 313
297 ////////////////////////////////////////////// 314 ///////////////////////////////////////////////////////////////////////////////
>> 315 //
>> 316 //
>> 317
298 G4double G4SynchrotronRadiation::InvSynFracInt 318 G4double G4SynchrotronRadiation::InvSynFracInt(G4double x)
299 // direct generation 319 // direct generation
300 { 320 {
301 // from 0 to 0.7 321 // from 0 to 0.7
302 static constexpr G4double aa1 = 0; << 322 static const G4double aa1=0 ,aa2=0.7;
303 static constexpr G4double aa2 = 0. << 323 static const G4int ncheb1=27;
304 static constexpr G4int ncheb1 = 27 << 324 static const G4double cheb1[] =
305 static constexpr G4double cheb1[ncheb1] = { << 325 { 1.22371665676046468821,0.108956475422163837267,0.0383328524358594396134,0.00759138369340257753721,
306 1.22371665676046468821, 0.108956475422 << 326 0.00205712048644963340914,0.000497810783280019308661,0.000130743691810302187818,0.0000338168760220395409734,
307 0.0383328524358594396134, 0.007591383693 << 327 8.97049680900520817728e-6,2.38685472794452241466e-6,6.41923109149104165049e-7,1.73549898982749277843e-7,
308 0.00205712048644963340914, 0.000497810783 << 328 4.72145949240790029153e-8,1.29039866111999149636e-8,3.5422080787089834182e-9,9.7594757336403784905e-10,
309 0.000130743691810302187818, 0.000033816876 << 329 2.6979510184976065731e-10,7.480422622550977077e-11,2.079598176402699913e-11,5.79533622220841193e-12,
310 8.97049680900520817728e-6, 2.386854727944 << 330 1.61856011449276096e-12,4.529450993473807e-13,1.2698603951096606e-13,3.566117394511206e-14,1.00301587494091e-14,
311 6.41923109149104165049e-7, 1.735498989827 << 331 2.82515346447219e-15,7.9680747949792e-16};
312 4.72145949240790029153e-8, 1.290398661119 <<
313 3.5422080787089834182e-9, 9.759475733640 <<
314 2.6979510184976065731e-10, 7.480422622550 <<
315 2.079598176402699913e-11, 5.795336222208 <<
316 1.61856011449276096e-12, 4.529450993473 <<
317 1.2698603951096606e-13, 3.566117394511 <<
318 1.00301587494091e-14, 2.825153464472 <<
319 7.9680747949792e-16 <<
320 }; <<
321 // from 0.7 to 0.9132260271183847 332 // from 0.7 to 0.9132260271183847
322 static constexpr G4double aa3 = 0. << 333 static const G4double aa3=0.9132260271183847;
323 static constexpr G4int ncheb2 = 27 << 334 static const G4int ncheb2=27;
324 static constexpr G4double cheb2[ncheb2] = { << 335 static const G4double cheb2[] =
325 1.1139496701107756, 0.3523967429328067 << 336 { 1.1139496701107756,0.3523967429328067,0.0713849171926623,0.01475818043595387,0.003381255637322462,
326 0.01475818043595387, 0.0033812556373224 << 337 0.0008228057599452224,0.00020785506681254216,0.00005390169253706556,0.000014250571923902464,3.823880733161044e-6,
327 0.00020785506681254216, 0.0000539016925370 << 338 1.0381966089136036e-6,2.8457557457837253e-7,7.86223332179956e-8,2.1866609342508474e-8,6.116186259857143e-9,
328 3.823880733161044e-6, 1.0381966089136036 << 339 1.7191233618437565e-9,4.852755117740807e-10,1.3749966961763457e-10,3.908961987062447e-11,1.1146253766895824e-11,
329 7.86223332179956e-8, 2.1866609342508474 << 340 3.1868887323415814e-12,9.134319791300977e-13,2.6211077371181566e-13,7.588643377757906e-14,2.1528376972619e-14,
330 1.7191233618437565e-9, 4.852755117740807e << 341 6.030906040404772e-15,1.9549163926819867e-15};
331 3.908961987062447e-11, 1.1146253766895824 << 342 // Chebyshev with exp/log scale
332 9.134319791300977e-13, 2.6211077371181566 << 343 // a = -Log[1 - SynFracInt[1]]; b = -Log[1 - SynFracInt[7]];
333 2.1528376972619e-14, 6.030906040404772e << 344 static const G4double aa4=2.4444485538746025480,aa5=9.3830728608909477079;
334 }; << 345 static const G4int ncheb3=28;
335 // Chebyshev with exp/log scale << 346 static const G4double cheb3[] =
336 // a = -Log[1 - SynFracInt[1]]; b = -Log[1 - << 347 { 1.2292683840435586977,0.160353449247864455879,-0.0353559911947559448721,0.00776901561223573936985,
337 static constexpr G4double aa4 = 2. << 348 -0.00165886451971685133259,0.000335719118906954279467,-0.0000617184951079161143187,9.23534039743246708256e-6,
338 static constexpr G4double aa5 = 9. << 349 -6.06747198795168022842e-7,-3.07934045961999778094e-7,1.98818772614682367781e-7,-8.13909971567720135413e-8,
339 static constexpr G4int ncheb3 = 28 << 350 2.84298174969641838618e-8,-9.12829766621316063548e-9,2.77713868004820551077e-9,-8.13032767247834023165e-10,
340 static constexpr G4double cheb3[ncheb3] = { << 351 2.31128525568385247392e-10,-6.41796873254200220876e-11,1.74815310473323361543e-11,-4.68653536933392363045e-12,
341 1.2292683840435586977, 0.1603534492 << 352 1.24016595805520752748e-12,-3.24839432979935522159e-13,8.44601465226513952994e-14,-2.18647276044246803998e-14,
342 -0.0353559911947559448721, 0.0077690156 << 353 5.65407548745690689978e-15,-1.46553625917463067508e-15,3.82059606377570462276e-16,-1.00457896653436912508e-16};
343 -0.00165886451971685133259, 0.0003357191 << 354 static const G4double aa6=33.122936966163038145;
344 -0.0000617184951079161143187, 9.2353403974 << 355 static const G4int ncheb4=27;
345 -6.06747198795168022842e-7, -3.079340459 << 356 static const G4double cheb4[] =
346 1.98818772614682367781e-7, -8.139099715 << 357 {1.69342658227676741765,0.0742766400841232319225,-0.019337880608635717358,0.00516065527473364110491,
347 2.84298174969641838618e-8, -9.128297666 << 358 -0.00139342012990307729473,0.000378549864052022522193,-0.000103167085583785340215,0.0000281543441271412178337,
348 2.77713868004820551077e-9, -8.130327672 << 359 -7.68409742018258198651e-6,2.09543221890204537392e-6,-5.70493140367526282946e-7,1.54961164548564906446e-7,
349 2.31128525568385247392e-10, -6.417968732 << 360 -4.19665599629607704794e-8,1.13239680054166507038e-8,-3.04223563379021441863e-9,8.13073745977562957997e-10,
350 1.74815310473323361543e-11, -4.686535369 << 361 -2.15969415476814981374e-10,5.69472105972525594811e-11,-1.48844799572430829499e-11,3.84901514438304484973e-12,
351 1.24016595805520752748e-12, -3.248394329 << 362 -9.82222575944247161834e-13,2.46468329208292208183e-13,-6.04953826265982691612e-14,1.44055805710671611984e-14,
352 8.44601465226513952994e-14, -2.186472760 << 363 -3.28200813577388740722e-15,6.96566359173765367675e-16,-1.294122794852896275e-16};
353 5.65407548745690689978e-15, -1.465536259 << 364
354 3.82059606377570462276e-16, -1.004578966 << 365 if(x<aa2) return x*x*x*Chebyshev(aa1,aa2,cheb1,ncheb1,x);
355 }; << 366 else if(x<aa3) return Chebyshev(aa2,aa3,cheb2,ncheb2,x);
356 static constexpr G4double aa6 = 33 << 367 else if(x<1-0.0000841363)
357 static constexpr G4int ncheb4 = 27 << 368 { G4double y=-G4Log(1-x);
358 static constexpr G4double cheb4[ncheb4] = { << 369 return y*Chebyshev(aa4,aa5,cheb3,ncheb3,y);
359 1.69342658227676741765, 0.07427664008 <<
360 -0.019337880608635717358, 0.00516065527 <<
361 -0.00139342012990307729473, 0.00037854986 <<
362 -0.000103167085583785340215, 0.00002815434 <<
363 -7.68409742018258198651e-6, 2.09543221890 <<
364 -5.70493140367526282946e-7, 1.54961164548 <<
365 -4.19665599629607704794e-8, 1.13239680054 <<
366 -3.04223563379021441863e-9, 8.13073745977 <<
367 -2.15969415476814981374e-10, 5.69472105972 <<
368 -1.48844799572430829499e-11, 3.84901514438 <<
369 -9.82222575944247161834e-13, 2.46468329208 <<
370 -6.04953826265982691612e-14, 1.44055805710 <<
371 -3.28200813577388740722e-15, 6.96566359173 <<
372 -1.294122794852896275e-16 <<
373 }; <<
374 <<
375 if(x < aa2) <<
376 return x * x * x * Chebyshev(aa1, aa2, che <<
377 else if(x < aa3) <<
378 return Chebyshev(aa2, aa3, cheb2, ncheb2, <<
379 else if(x < 1 - 0.0000841363) <<
380 { <<
381 G4double y = -G4Log(1 - x); <<
382 return y * Chebyshev(aa4, aa5, cheb3, nche <<
383 } 370 }
384 else 371 else
385 { << 372 { G4double y=-G4Log(1-x);
386 G4double y = -G4Log(1 - x); << 373 return y*Chebyshev(aa5,aa6,cheb4,ncheb4,y);
387 return y * Chebyshev(aa5, aa6, cheb4, nche <<
388 } 374 }
389 } 375 }
390 376
391 G4double G4SynchrotronRadiation::GetRandomEner << 377 G4double G4SynchrotronRadiation::GetRandomEnergySR(
392 << 378 G4double gamma, G4double perpB, G4double mass_c2)
393 <<
394 { 379 {
395 static const G4double fEnergyConst = << 380
396 1.5 * c_light * c_light * eplus * hbar_Pla << 381 static const G4double fEnergyConst = 1.5*c_light*c_light*eplus*hbar_Planck;
397 G4double Ecr = fEnergyConst * gamma * gamma << 382 G4double Ecr=fEnergyConst*gamma*gamma*perpB/mass_c2;
398 383
399 if(verboseLevel > 0 && FirstTime1) 384 if(verboseLevel > 0 && FirstTime1)
400 { << 385 {
401 // mean and rms of photon energy << 386 // mean and rms of photon energy
402 G4double Emean = 8. / (15. * std::sqrt(3.) << 387 G4double Emean=8./(15.*std::sqrt(3.))*Ecr;
403 G4double E_rms = std::sqrt(211. / 675.) * << 388 G4double E_rms=std::sqrt(211./675.)*Ecr;
404 G4long prec = G4cout.precision(); << 389 G4int prec = G4cout.precision();
405 G4cout << "G4SynchrotronRadiation::GetRand << 390 G4cout << "G4SynchrotronRadiation::GetRandomEnergySR :" << '\n'
406 << std::setprecision(4) << " Ecr << 391 << std::setprecision(4)
407 << '\n' << 392 << " Ecr = " << G4BestUnit(Ecr,"Energy") << '\n'
408 << " Emean = " << G4BestUnit(Emean << 393 << " Emean = " << G4BestUnit(Emean,"Energy") << '\n'
409 << " E_rms = " << G4BestUnit(E_rms << 394 << " E_rms = " << G4BestUnit(E_rms,"Energy") << G4endl;
410 FirstTime1 = false; << 395 FirstTime1=false;
411 G4cout.precision(prec); << 396 G4cout.precision(prec);
412 } 397 }
413 398
414 G4double energySR = Ecr * InvSynFracInt(G4Un << 399 G4double energySR=Ecr*InvSynFracInt(G4UniformRand());
415 return energySR; 400 return energySR;
416 } 401 }
417 402
418 ////////////////////////////////////////////// 403 ///////////////////////////////////////////////////////////////////////////////
419 void G4SynchrotronRadiation::BuildPhysicsTable << 404 //
>> 405 //
>> 406
>> 407 void
>> 408 G4SynchrotronRadiation::BuildPhysicsTable(const G4ParticleDefinition& part)
420 { 409 {
421 if(0 < verboseLevel && &part == G4Electron:: << 410 if(0 < verboseLevel && &part==G4Electron::Electron() ) PrintInfoDefinition();
422 ProcessDescription(G4cout); <<
423 // same for all particles, print only for on 411 // same for all particles, print only for one (electron)
424 } 412 }
425 413
426 ////////////////////////////////////////////// 414 ///////////////////////////////////////////////////////////////////////////////
427 void G4SynchrotronRadiation::ProcessDescriptio << 415 //
>> 416 //
>> 417
>> 418 void G4SynchrotronRadiation::PrintInfoDefinition()
>> 419 // not yet called, usually called from BuildPhysicsTable
428 { 420 {
429 out << GetProcessName() << 421 G4String comments ="Incoherent Synchrotron Radiation\n";
430 << ": Incoherent Synchrotron Radiation\ << 422 G4cout << G4endl << GetProcessName() << ": " << comments
431 "Good description for long magnets at << 423 << " good description for long magnets at all energies"
>> 424 << G4endl;
432 } 425 }
>> 426
>> 427 ///////////////////// end of G4SynchrotronRadiation.cc
433 428