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25 // 25 //
26 // 26 //
27 // 27 //
28 // << 28 //
29 //-------------------------------------------- 29 //---------------------------------------------------------------
30 // 30 //
31 // G4FastStep.hh 31 // G4FastStep.hh
32 // 32 //
33 // Description: 33 // Description:
34 // The G4FastStep class insures a friendly 34 // The G4FastStep class insures a friendly interface
35 // to manage the primary/secondaries final << 35 // to manage the primary/secondaries final state for
36 // Fast Simulation Models. This includes fi 36 // Fast Simulation Models. This includes final states of parent
37 // particle (normalized direction of the mo << 37 // particle (normalized direction of the momentum, energy, etc) and
38 // secondary particles generated by the par 38 // secondary particles generated by the parameterisation.
39 // 39 //
40 // The G4FastStep class acts also as the G4 40 // The G4FastStep class acts also as the G4ParticleChange
41 // for the Fast Simulation Process. So it i << 41 // for the Fast Simulation Process. So it inherites from
42 // the G4VParticleChange class and redefine << 42 // the G4VParticleChange class and redefines the four virtual
43 // methods : 43 // methods :
44 // 44 //
45 // virtual G4Step* UpdateStepForAtRest(G4S 45 // virtual G4Step* UpdateStepForAtRest(G4Step* Step);
46 // virtual G4Step* UpdateStepForAlongStep( 46 // virtual G4Step* UpdateStepForAlongStep(G4Step* Step);
47 // virtual G4Step* UpdateStepForPostStep(G 47 // virtual G4Step* UpdateStepForPostStep(G4Step* Step);
48 // virtual void Initialize(const G4Track&) 48 // virtual void Initialize(const G4Track&);
49 // 49 //
50 // History: 50 // History:
51 // Oct 97: Verderi && MoraDeFreitas - First 51 // Oct 97: Verderi && MoraDeFreitas - First Implementation.
52 // Dec 97: Verderi - ForceSteppingHitInvoca 52 // Dec 97: Verderi - ForceSteppingHitInvocation(),
53 // Set/GetTotalEnergyDepo 53 // Set/GetTotalEnergyDeposited() methods.
54 // Apr 98: MoraDeFreitas - G4FastStep becom 54 // Apr 98: MoraDeFreitas - G4FastStep becomes the G4ParticleChange
55 // for the Fast Simulatio 55 // for the Fast Simulation Process.
56 // Nov 04: Verderi - Add ProposeXXX methods 56 // Nov 04: Verderi - Add ProposeXXX methods. SetXXX ones are kept
57 // for backward compatibi << 57 // for backward compatibility.
58 // 58 //
59 //-------------------------------------------- 59 //---------------------------------------------------------------
60 60
>> 61
61 #ifndef G4FastStep_h 62 #ifndef G4FastStep_h
62 #define G4FastStep_h 63 #define G4FastStep_h
63 64
64 #include "G4ParticleMomentum.hh" <<
65 #include "G4ThreeVector.hh" <<
66 #include "G4ios.hh" <<
67 #include "globals.hh" 65 #include "globals.hh"
>> 66 #include "G4ios.hh"
>> 67 #include "G4ThreeVector.hh"
>> 68 #include "G4ParticleMomentum.hh"
68 class G4DynamicParticle; 69 class G4DynamicParticle;
69 #include "G4FastTrack.hh" <<
70 #include "G4VParticleChange.hh" 70 #include "G4VParticleChange.hh"
>> 71 #include "G4FastTrack.hh"
71 72
72 //------------------------------------------- 73 //-------------------------------------------
73 // 74 //
74 // G4FastStep class 75 // G4FastStep class
75 // 76 //
76 //------------------------------------------- 77 //-------------------------------------------
77 78
78 // Class Description: 79 // Class Description:
79 // The final state of the particles after par << 80 // The final state of the particles after parameterisation has to be returned through a G4FastStep
80 // reference. This final state is described a << 81 // reference. This final state is described as "requests" the tracking will apply after your
81 // parameterisation has been invoked. 82 // parameterisation has been invoked.
82 // 83 //
83 // To facilitate the developers work, changes << 84 // To facilitate the developers work, changes of position/normalized direction of the
84 // momentum/polarization can be specified in << 85 // momentum/polarization can be specified in the local coordinate system of the envelope or in the
85 // global one. 86 // global one.
86 // The default is local system coordinates. 87 // The default is local system coordinates.
87 // 88 //
88 89
89 class G4FastStep : public G4VParticleChange << 90 class G4FastStep: public G4VParticleChange
90 { 91 {
91 public: // Without description << 92 public: // with Description
92 //------------------------ << 93 void KillPrimaryTrack();
93 // Constructor/Destructor << 94 // Set the kinetic energy of the primary to zero, and set the "fStopAndKill" signal
94 //------------------------ << 95 // used by the stepping.
95 G4FastStep() = default; << 96
96 ~G4FastStep() override = default; << 97 // -- Methods used to change the position, normalized direction of
97 << 98 // the momentum, time etc... of the primary.
98 G4FastStep(const G4FastStep& right) = dele << 99 // .. space and time:
99 G4FastStep& operator=(const G4FastStep& ri << 100 void ProposePrimaryTrackFinalPosition (const G4ThreeVector &,
100 << 101 G4bool localCoordinates = true);
101 // Set the kinetic energy of the primary t << 102 // Set the primary track final position.
102 // used by the stepping. << 103 void SetPrimaryTrackFinalPosition (const G4ThreeVector &,
103 void KillPrimaryTrack(); << 104 G4bool localCoordinates = true);
104 << 105 // Set the primary track final position -- maintained for backward compatibility.
105 // -- Methods used to change the position, << 106
106 // the momentum, time etc... of the primar << 107
107 // .. space and time: << 108 void ProposePrimaryTrackFinalTime (G4double);
108 << 109 // Set the primary track final time.
109 // Set the primary track final position. << 110 void SetPrimaryTrackFinalTime (G4double);
110 void ProposePrimaryTrackFinalPosition(cons << 111 // Set the primary track final time -- maintained for backward compatibility.
111 << 112
112 // Set the primary track final position -- << 113
113 [[deprecated("use ProposePrimaryTrackFinal << 114 void ProposePrimaryTrackFinalProperTime (G4double);
114 void SetPrimaryTrackFinalPosition(const G4 << 115 // Set the primary final track Proper Time.
115 << 116 void SetPrimaryTrackFinalProperTime (G4double);
116 // Set the primary track final time. << 117 // Set the primary final track Proper Time -- maintained for backward compatibility.
117 void ProposePrimaryTrackFinalTime(G4double << 118
118 << 119
119 // Set the primary track final time -- mai << 120 // .. dynamics:
120 [[deprecated("use ProposePrimaryTrackFinal << 121 void ProposePrimaryTrackFinalMomentumDirection (const G4ThreeVector &,
121 void SetPrimaryTrackFinalTime(G4double); << 122 G4bool localCoordinates = true);
122 << 123 // Be careful: the Track Final Momentum means the normalized direction
123 // Set the primary final track Proper Time << 124 // of the momentum!
124 void ProposePrimaryTrackFinalProperTime(G4 << 125 void SetPrimaryTrackFinalMomentum (const G4ThreeVector &,
125 << 126 G4bool localCoordinates = true);
126 // Set the primary final track Proper Time << 127 // Set the primary track final momentum -- maintained for backward compatibility. Same as ProposePrimaryTrackMomentumDirection(...)
127 [[deprecated("use ProposePrimaryTrackPrope << 128
128 void SetPrimaryTrackFinalProperTime(G4doub << 129
129 << 130 void ProposePrimaryTrackFinalKineticEnergy (G4double);
130 // .. dynamics: << 131 // Set the primary track final kinetic energy.
131 << 132 void SetPrimaryTrackFinalKineticEnergy (G4double);
132 // Be careful: the Track Final Momentum me << 133 // Set the primary track final kinetic energy-- maintained for backward compatibility.
133 // of the momentum! << 134
134 void ProposePrimaryTrackFinalMomentumDirec << 135
135 << 136 void ProposePrimaryTrackFinalKineticEnergyAndDirection(G4double,
136 << 137 const G4ThreeVector &,
137 // Set the primary track final momentum -- << 138 G4bool localCoordinates
138 // ProposePrimaryTrackMomentumDirection(.. << 139 = true);
139 [[deprecated("use ProposePrimaryTrackMomen << 140 // Set the primary track final kinetic energy and direction.
140 void SetPrimaryTrackFinalMomentum(const G4 << 141 void SetPrimaryTrackFinalKineticEnergyAndDirection(G4double,
141 << 142 const G4ThreeVector &,
142 // Set the primary track final kinetic ene << 143 G4bool localCoordinates
143 void ProposePrimaryTrackFinalKineticEnergy << 144 = true);
144 << 145 // Set the primary track final kinetic energy and direction -- maintained for backward compatibility.
145 // Set the primary track final kinetic ene << 146
146 [[deprecated("use ProposePrimaryTrackFinal << 147
147 void SetPrimaryTrackFinalKineticEnergy(G4d << 148
148 << 149 void ProposePrimaryTrackFinalPolarization(const G4ThreeVector &,
149 // Set the primary track final kinetic ene << 150 G4bool localCoordinates = true);
150 void ProposePrimaryTrackFinalKineticEnergy << 151 // Set the primary track final polarization.
151 << 152 void SetPrimaryTrackFinalPolarization(const G4ThreeVector &,
152 << 153 G4bool localCoordinates = true);
153 // Set the primary track final kinetic ene << 154 // Set the primary track final polarization.
154 // compatibility. << 155
155 [[deprecated("use ProposePrimaryTrackFinal << 156
156 void SetPrimaryTrackFinalKineticEnergyAndD << 157 void ProposePrimaryTrackPathLength (G4double);
157 << 158 // Set the true path length of the primary track during the step.
158 << 159 void SetPrimaryTrackPathLength (G4double);
159 // Set the primary track final polarizatio << 160 // Set the true path length of the primary track during the step -- maintained for backward compatibility.
160 void ProposePrimaryTrackFinalPolarization( << 161
161 << 162 void ProposePrimaryTrackFinalEventBiasingWeight (G4double);
162 // Set the primary track final polarizatio << 163 // Set the weight applied for event biasing mechanism.
163 [[deprecated("use ProposePrimaryTrackFinal << 164 void SetPrimaryTrackFinalEventBiasingWeight (G4double);
164 void SetPrimaryTrackFinalPolarization(cons << 165 // Set the weight applied for event biasing mechanism -- kept for backward compatibility.
165 << 166
166 // Set the true path length of the primary << 167 // ------------------------------
167 void ProposePrimaryTrackPathLength(G4doubl << 168 // -- Management of secondaries:
168 << 169 // ------------------------------
169 // Set the true path length of the primary << 170
170 // compatibility. << 171 // ----------------------------------------------------
171 [[deprecated("use ProposePrimaryTrackPathL << 172 // -- The creation of secondaries is Done in two steps:
172 void SetPrimaryTrackPathLength(G4double); << 173 // -- 1) Give the total number of secondaries
173 << 174 // -- that the FastStep returns
174 // Set the weight applied for event biasin << 175 // -- to the tracking using:
175 void ProposePrimaryTrackFinalEventBiasingW << 176 // -- SetNumberOfSecondaryTracks()
176 << 177 // --
177 // Set the weight applied for event biasin << 178 // -- 2) Invoke the CreateSecondaryTrack() method
178 [[deprecated("use ProposePrimaryTrackFinal << 179 // -- to create one secondary at each time.
179 void SetPrimaryTrackFinalEventBiasingWeigh << 180 // ----------------------------------------------------
180 << 181
181 // ------------------------------ << 182 // -- Total Number of secondaries to be created,
182 // -- Management of secondaries: << 183 // -- (to be called first)
183 // ------------------------------ << 184 void SetNumberOfSecondaryTracks(G4int);
184 << 185 // Set the total number of secondaries that will be created.
185 // --------------------------------------- << 186
186 // -- The creation of secondaries is Done << 187 // -- Number of secondaries effectively stored:
187 // -- 1) Give the total number of sec << 188 // -- (incremented at each CreateSecondaryTrack()
188 // -- that the FastStep returns << 189 // -- call)
189 // -- to the tracking using: << 190 G4int GetNumberOfSecondaryTracks();
190 // -- SetNumberOfSecondaryTracks() << 191 // Returns the number of secondaries effectively stored.
191 // -- << 192
192 // -- 2) Invoke the CreateSecondaryTr << 193 // -- Create a secondary: the arguments are:
193 // -- to create one secondary at e << 194 // -- * G4DynamicsParticle: see header file, many constructors exist
194 // --------------------------------------- << 195 // -- (allow to set particle type + energy +
195 << 196 // -- the normalized direction of momentum...)
196 // Set the total number of secondaries tha << 197 // -- * G4ThreeVector : Polarization (not in G4ParticleChange constructor)
197 // -- Total Number of secondaries to be cr << 198 // -- * G4ThreeVector : Position
198 // -- (to be called first) << 199 // -- * G4double : Time
199 void SetNumberOfSecondaryTracks(G4int); << 200 // -- * G4bool : says if Position/Momentum are given in the
200 << 201 // -- local coordinate system (true by default)
201 // Returns the number of secondaries effec << 202 // -- Returned value: pointer to the track created.
202 // -- Number of secondaries effectively st << 203 G4Track* CreateSecondaryTrack(const G4DynamicParticle&,
203 // -- (incremented at each CreateSecondary << 204 G4ThreeVector,
204 // -- call) << 205 G4ThreeVector,
205 G4int GetNumberOfSecondaryTracks(); << 206 G4double,
206 << 207 G4bool localCoordinates=true);
207 // -- Create a secondary: the arguments ar << 208 // Create a secondary. The arguments are:
208 // -- * G4DynamicsParticle: see header << 209 //
209 // -- (allow to << 210 // G4DynamicsParticle: see the G4DynamicsParticle reference, many constructors exist
210 // -- the normalized direction of momentum << 211 // (allow to set particle type + energy + the normalized direction of
211 // -- * G4ThreeVector : Polarizati << 212 // momentum...);
212 // -- * G4ThreeVector : Position << 213 // G4ThreeVector : Polarization;
213 // -- * G4double : Time << 214 // G4ThreeVector : Position;
214 // -- * G4bool : says if Po << 215 // G4double : Time;
215 // -- local coor << 216 // G4bool : says if Position/Momentum are given in the local envelope coordinate
216 // -- Returned value: pointer to the track << 217 // system (true by default).
217 G4Track* CreateSecondaryTrack(const G4Dyna << 218 //
218 G4bool local << 219 // Returned value: pointer to the track created.
219 << 220 //
220 //-- Create a secondary: the difference wi << 221
221 //-- is that the Polarization is not given << 222 //-- Create a secondary: the difference with he above declaration
222 //-- in the G4DynamicParticle. << 223 //-- is that the Polarization is not given and is assumed already set
223 //-- Returned value: pointer to the track << 224 //-- in the G4DynamicParticle.
224 G4Track* CreateSecondaryTrack(const G4Dyna << 225 //-- Returned value: pointer to the track created
225 G4bool local << 226 G4Track* CreateSecondaryTrack(const G4DynamicParticle&,
226 << 227 G4ThreeVector,
227 // Returns a pointer on the i-th secondary << 228 G4double,
228 G4Track* GetSecondaryTrack(G4int); << 229 G4bool localCoordinates=true);
229 << 230 // Create a secondary. The difference with he above declaration is that the Polarization is not
230 //---------------------------------------- << 231 // given and is assumed already set in the G4DynamicParticle.
231 // << 232 //
232 // Total energy deposit in the "fast Ste << 233 // Returned value: pointer to the track created
233 // (a default should be provided in futu << 234
234 // which can be: << 235
235 // delta energy of primary - << 236
236 // energy of the secondaries) << 237 G4Track* GetSecondaryTrack(G4int);
237 // This allow the user to Store a consis << 238 // Returns a pointer on the i-th secondary track created.
238 // information in the G4Trajectory. << 239
239 // << 240 //------------------------------------------------
240 //---------------------------------------- << 241 //
241 // Set the total energy deposited. << 242 // Total energy deposit in the "fast Step"
242 void ProposeTotalEnergyDeposited(G4double << 243 // (a default should be provided in future,
243 << 244 // which can be:
244 // Set the total energy deposited -- kept << 245 // delta energy of primary -
245 // It should be the delta energy of primar << 246 // energy of the secondaries)
246 [[deprecated("use ProposeTotalEnergyDeposi << 247 // This allow the user to Store a consistent
247 void SetTotalEnergyDeposited(G4double anEn << 248 // information in the G4Trajectory.
248 << 249 //
249 // Returns the total energy deposited. << 250 //------------------------------------------------
250 G4double GetTotalEnergyDeposited() const; << 251 void ProposeTotalEnergyDeposited(G4double anEnergyPart);
251 << 252 // Set the total energy deposited.
252 // Control of the stepping manager Hit inv << 253 void SetTotalEnergyDeposited(G4double anEnergyPart);
253 // << 254 // Set the total energy deposited -- kept for backward compatibility.
254 // In a usual parameterisation, the contro << 255 // It should be the delta energy of primary less the energy of the secondaries.
255 // responsability in his G4VFastSimulation << 256
256 // << 257 G4double GetTotalEnergyDeposited() const;
257 // However, in the particular case the G4F << 258 // Returns the total energy deposited.
258 // replacement only (ie replaces all the * << 259
259 // G4Step), the user can delegate to the G << 260 void ForceSteppingHitInvocation();
260 // the Hit()method of the current sensitiv << 261 // Control of the stepping manager Hit invocation.
261 // << 262 //
262 // By default, the G4SteppingManager is as << 263 // In a usual parameterisation, the control of the hits production is under the user
263 // parameterisation is invoked. << 264 // responsability in his G4VFastSimulationModel (he generally produces several hits at once.)
264 void ForceSteppingHitInvocation(); << 265 //
265 << 266 // However, in the particular case the G4FastSimulation user's model acts as the physics
266 // ======================================= << 267 // replacement only (ie replaces all the ***DoIt() and leads to the construction of a meaningful
267 // Stepping interface. << 268 // G4Step), the user can delegate to the G4SteppingManager the responsability to invoke
268 // ======================================= << 269 // the Hit()method of the current sensitive if any.
269 // --- the following methods are for updat << 270 //
270 // Return the pointer to the G4Step after << 271 // By default, the G4SteppingManager is asked to NOT invoke this Hit() method when parameterisation
271 // by using final state information of the << 272 // is invoked.
272 // << 273 //
273 // The Fast Simulation Mechanism doesn't c << 274
274 // state on the AlongDoIt loop, so the def << 275
275 // virtual G4Step* UpdateStepForAlongStep( << 276 public: // Without description
276 << 277 //=======================================================
277 G4Step* UpdateStepForAtRest(G4Step* Step) << 278 // Implementation section and kernel interfaces.
278 G4Step* UpdateStepForPostStep(G4Step* Step << 279 //=======================================================
279 << 280 //------------------------
280 // A Model gives the final state of the pa << 281 // Constructor/Destructor
281 // based on information of G4FastTrack. So << 282 //------------------------
282 // Initialize method is an interface to th << 283 G4FastStep();
283 // G4FastSimulationManager to Initialize t << 284 virtual ~G4FastStep();
284 // G4FastStep. << 285
285 << 286 // equal/unequal operator
286 void Initialize(const G4FastTrack&); << 287 G4bool operator==(const G4FastStep &right) const;
287 << 288 G4bool operator!=(const G4FastStep &right) const;
288 // for Debug << 289
289 void DumpInfo() const override; << 290 protected:
290 G4bool CheckIt(const G4Track&) override; << 291 // hide copy constructor and assignment operator as protected
291 << 292 G4FastStep (const G4FastStep &right);
292 private: << 293 G4FastStep & operator= (const G4FastStep &right);
293 //======================================== << 294
294 // Private Internal methods (implementatio << 295 public:
295 //======================================== << 296 // ===============================================
296 << 297 // Stepping interface.
297 // G4FastStep should never be Initialized << 298 // ===============================================
298 // but we must define it to avoid compiler << 299 // --- the following methods are for updating G4Step -----
299 void Initialize(const G4Track&) override; << 300 // Return the pointer to the G4Step after updating the Step information
300 << 301 // by using final state information of the track given by a Model.
301 // -- Utility functions -- << 302 //
302 //--- methods to keep information of the f << 303 // The Fast Simulation Mechanism doesn't change the track's final
303 // IMPORTANT NOTE: Although the name of t << 304 // state on the AlongDoIt loop, so the default one all we need.
304 // "Change", what it stores (and returns << 305 //virtual G4Step* UpdateStepForAlongStep(G4Step* Step);
305 // values of the Position, the normalize << 306
306 // etc. << 307 G4Step* UpdateStepForAtRest(G4Step* Step);
307 << 308 G4Step* UpdateStepForPostStep(G4Step* Step);
308 // Set theMomentumChange vector: it is the << 309
309 // direction. << 310 // A Model gives the final state of the particle
310 void SetMomentumChange(G4double Px, G4doub << 311 // based on information of G4FastTrack. So the
311 void SetMomentumChange(const G4ThreeVector << 312 // Initialize method is an interface to the
312 << 313 // G4FastSimulationManager to Initialize the
313 //======================================== << 314 // G4FastStep.
314 // Data members. << 315
315 //======================================== << 316 void Initialize(const G4FastTrack&);
316 // theMomentumChange is the vector contai << 317
317 // direction after the invoked process. T << 318 private:
318 // of the momentum direction of the parti << 319 //===================================================
319 // The responsibility to apply the change << 320 // Private Internal methods (implementation).
320 // which invoked the process. << 321 //===================================================
321 G4ParticleMomentum theMomentumChange; << 322
322 << 323 // G4FastStep should never be Initialized in this way
323 // The changed (final) polarization of a << 324 // but we must define it to avoid compiler warnings.
324 G4ThreeVector thePolarizationChange; << 325 void Initialize(const G4Track&);
325 << 326
326 // The final kinetic energy of the curren << 327 // -- Utility functions --
327 G4double theEnergyChange = 0.0; << 328 //--- methods to keep information of the final state--
328 << 329 // IMPORTANT NOTE: Although the name of the class and methods are
329 // The changed (final) position of a give << 330 // "Change", what it stores (and returns in get) are the "FINAL"
330 G4ThreeVector thePositionChange; << 331 // values of the Position, the normalized direction of Momentum,
331 << 332 // etc.
332 // The changed (final) global time of a g << 333
333 G4double theTimeChange = 0.0; << 334 // Set theMomentumChange vector: it is the final unitary momentum
334 << 335 // direction.
335 // The changed (final) proper time of a g << 336 void SetMomentumChange(G4double Px, G4double Py, G4double Pz);
336 G4double theProperTimeChange = 0.0; << 337 void SetMomentumChange(const G4ThreeVector& Pfinal);
337 << 338
338 // The reference G4FastTrack << 339 //=====================================================
339 const G4FastTrack* fFastTrack = nullptr; << 340 // Data members.
340 << 341 //=====================================================
341 // weight for event biasing mechanism: << 342 // theMomentumChange is the vector containing the final momentum
342 G4double theWeightChange = 0.0; << 343 // direction after the invoked process. The application of the change
>> 344 // of the momentum direction of the particle is not Done here.
>> 345 // The responsibility to apply the change is up the entity
>> 346 // which invoked the process.
>> 347 G4ParticleMomentum theMomentumChange;
>> 348
>> 349 // The changed (final) polarization of a given particle.
>> 350 G4ThreeVector thePolarizationChange;
>> 351
>> 352 // The final kinetic energy of the current particle.
>> 353 G4double theEnergyChange;
>> 354
>> 355 // The changed (final) position of a given particle.
>> 356 G4ThreeVector thePositionChange;
>> 357
>> 358 // The changed (final) global time of a given particle.
>> 359 G4double theTimeChange;
>> 360
>> 361 // The changed (final) proper time of a given particle.
>> 362 G4double theProperTimeChange;
>> 363
>> 364 // The reference G4FastTrack
>> 365 const G4FastTrack* fFastTrack;
>> 366
>> 367 // weight for event biasing mechanism:
>> 368 G4double theWeightChange;
>> 369
>> 370
>> 371 public:
>> 372 // for Debug
>> 373 void DumpInfo() const;
>> 374 G4bool CheckIt(const G4Track&);
343 }; 375 };
344 376
345 //******************************************** 377 //*******************************************************************
346 // 378 //
347 // Inline functions 379 // Inline functions
348 // 380 //
349 //******************************************** 381 //*******************************************************************
350 382
351 #include "G4FastStep.icc" 383 #include "G4FastStep.icc"
352 384
353 #endif 385 #endif
354 386