Updates needed for geant4.6 and fluka2004.
[u/mrichter/AliRoot.git] / TFluka / source_bg.cxx
CommitLineData
91a0cfa5 1#define METHODDEBUG
2
3// Fortran
4#include "TCallf77.h"
5
6// Fluka commons
7#include "Fdblprc.h" //(DBLPRC) fluka common
8#include "Fdimpar.h" //(DIMPAR) fluka parameters
9#include "Fepisor.h" //(EPISOR) fluka common
10#include "Fstack.h" //(STACK) fluka common
11#include "Fstars.h" //(STARS) fluka common
12#include "Fbeam.h" //(BEAM) fluka common
13#include "Fpaprop.h" //(PAPROP) fluka common
14#include "Fltclcm.h" //(LTCLCM) fluka common
15#include "Fpart.h"
16//#include "Fcaslim.h" //(CASLIM) fluka common
17
18//Virutal MC
19#include "AliGenerator.h"
20#include "AliStack.h"
21#include "../THijing/AliGenHijing.h"
22
23#include "TVirtualMCStack.h"
24#include "TParticle.h"
25#include "TVector3.h"
26#include "TRandom.h"
27
28//Other
29#include <Riostream.h>
30
31#ifndef WIN32
32# define source source_
33# define geocrs geocrs_
34# define georeg georeg_
35# define geohsm geohsm_
36# define soevsv soevsv_
37# define mcihad mcihad_
38# define source_bg source_bg__
39#else
40# define source SOURCE
41# define geocrs GEOCRS
42# define georeg GEOREG
43# define geohsm GEOHSM
44# define soevsv SOEVSV
45# define mcihad MCIHAD
46# define source_bg SOURCE_BG
47#endif
48
49extern "C" {
50 //
51 // Prototypes for FLUKA functions
52 //
53 void type_of_call geocrs(Double_t &, Double_t &, Double_t &);
54 void type_of_call georeg(Double_t &, Double_t &, Double_t &,
55 Int_t &, Int_t &);
56 void type_of_call geohsm(Int_t &, Int_t &, Int_t &, Int_t &);
57 void type_of_call soevsv();
58 int type_of_call mcihad(const int&);
59 /*
60 *----------------------------------------------------------------------*
61 * *
62 * Created on 07 january 1990 by Alfredo Ferrari & Paola Sala *
63 * Infn - Milan *
64 * *
65 * Last change on 21-jun-98 by Alfredo Ferrari *
66 * *
67 * C++ version on 27-sep-02 by Isidro Gonzalez *
68 * *
69 * This is just an example of a possible user written source routine. *
70 * note that the beam card still has some meaning - in the scoring the *
71 * maximum momentum used in deciding the binning is taken from the *
72 * beam momentum. Other beam card parameters are obsolete. *
73 * *
74 *----------------------------------------------------------------------*/
75
76 void source_bg(Int_t& nomore) {
77
78 static Bool_t lfirst = true;
79 static AliGenHijing* gener = 0;
80 static AliStack* stack = 0;
81
82 nomore = 0;
83 TParticle* particle;
84 Int_t itrack = -1;
85 if (lfirst) {
86 EPISOR.tkesum = zerzer;
87 lfirst = false;
88 EPISOR.lussrc = true;
89//
90// The generator
91//
92 gener = new AliGenHijing(-1);
93// beam energy
94 gener->SetEnergyCMS(7000.);
95// reference frame
96 gener->SetReferenceFrame("LAB");
97// projectile
98 gener->SetProjectile("P", 1, 1);
99 gener->SetTarget ("A", 16, 8);
5929ad29 100 gener->SetBoostLHC(0);
101
91a0cfa5 102// tell hijing to keep the full parent child chain
103 gener->KeepFullEvent();
104// enable jet quenching
105 gener->SetJetQuenching(0);
106// enable shadowing
107 gener->SetShadowing(0);
108// neutral pion and heavy particle decays switched off
109 gener->SetDecaysOff(1);
110// Don't track spectators
111 gener->SetSpectators(0);
112// The particle stack
113 stack = new AliStack(1000);
114 gener->SetStack(stack);
115 gener->Init();
116
117 } else {
118 //
119 // Generate event
120 stack->Reset();
121 gener->Generate();
122 Int_t npart = stack->GetNprimary();
123 // Vertex
5929ad29 124 Float_t za = 4000. * gRandom->Rndm() -2000.;
91a0cfa5 125 // Direction
5929ad29 126// Float_t dir = (za < 0.) ? 1. : -1.;
127 Float_t dir = (gRandom->Rndm() < 0.5)? 1. : -1;
91a0cfa5 128
129 for (Int_t part=0; part<npart; part++) {
130 particle = stack->Particle(part);
131 Int_t ic = particle->GetFirstDaughter();
132 if (ic != -1) continue;
133 Int_t pdg = particle->GetPdgCode();
134 Int_t intfluka = mcihad(pdg);
135 Int_t ifl = GetFlukaKPTOIP(intfluka);
136 TVector3 polarisation;
137 particle->GetPolarisation(polarisation);
138
139 STACK.lstack++;
140
141 printf("Particle %5d %5d %5d %10s %10.3f %10.3f %10.3f \n", STACK.lstack, pdg, ifl,
142 particle->GetName(), particle->Px(), particle->Py(), particle->Pz());
143
144
145
146 /* Wt is the weight of the particle*/
147 STACK.wt[STACK.lstack] = oneone;
148 STARS.weipri += STACK.wt[STACK.lstack];
149
150 STACK.ilo[STACK.lstack] = ifl;
151 /* From this point .....
152 * Particle generation (1 for primaries)
153 */
154 STACK.lo[STACK.lstack] = 1;
155
156 /* User dependent flag:*/
157 STACK.louse[STACK.lstack] = 0;
158
159 /* User dependent spare variables:*/
160 Int_t ispr = 0;
161 for (ispr = 0; ispr < mkbmx1; ispr++)
162 STACK.sparek[STACK.lstack][ispr] = zerzer;
163
164 /* User dependent spare flags:*/
165 for (ispr = 0; ispr < mkbmx2; ispr++)
166 STACK.ispark[STACK.lstack][ispr] = 0;
167
168 /* Save the track number of the stack particle:*/
169 STACK.ispark[STACK.lstack][mkbmx2-1] = itrack;
170 STACK.nparma++;
171 STACK.numpar[STACK.lstack] = STACK.nparma;
172 STACK.nevent[STACK.lstack] = 0;
173 STACK.dfnear[STACK.lstack] = +zerzer;
174
175 /* Particle age (s)*/
176 STACK.agestk[STACK.lstack] = +zerzer;
177 STACK.aknshr[STACK.lstack] = -twotwo;
178
179 /* Group number for "low" energy neutrons, set to 0 anyway*/
180 STACK.igroup[STACK.lstack] = 0;
181
182 /* Kinetic energy */
183 STACK.tke[STACK.lstack] = particle->Energy() - particle->GetMass();
184
185
186 /* Particle momentum*/
187 STACK.pmom [STACK.lstack] = particle->P();
188
189 /* Cosines (tx,ty,tz)*/
190 Double_t cosx = particle->Px()/particle->P();
191 Double_t cosy = particle->Py()/particle->P();
192 Double_t cosz = TMath::Sqrt(oneone - cosx*cosx - cosy*cosy);
193 if (particle->Pz() < 0.) cosz = -cosz;
194 cosz *= dir;
195
196 STACK.tx [STACK.lstack] = cosx;
197 STACK.ty [STACK.lstack] = cosy;
198 STACK.tz [STACK.lstack] = cosz;
199
200 /* Polarization cosines:*/
201 if (polarisation.Mag()) {
202 Double_t cospolx = polarisation.Px()/polarisation.Mag();
203 Double_t cospoly = polarisation.Py()/polarisation.Mag();
204 Double_t cospolz = sqrt(oneone - cospolx*cospolx - cospoly*cospoly);
205 STACK.tx [STACK.lstack] = cospolx;
206 STACK.ty [STACK.lstack] = cospoly;
207 STACK.tz [STACK.lstack] = cospolz;
208 }
209 else {
210 STACK.txpol [STACK.lstack] = -twotwo;
211 STACK.typol [STACK.lstack] = +zerzer;
212 STACK.tzpol [STACK.lstack] = +zerzer;
213 }
214
215 /* Particle coordinates*/
216 STACK.xa [STACK.lstack] = particle->Vx();
217 STACK.ya [STACK.lstack] = particle->Vy();
218 STACK.za [STACK.lstack] = za;
219
220 printf("Particle Vertex %10.3f %10.3f %10.3f %10.3f \n",
221 STACK.xa [STACK.lstack], STACK.ya [STACK.lstack], STACK.za [STACK.lstack], dir);
222
223
224
225 /* Calculate the total kinetic energy of the primaries: don't change*/
226 Int_t st_ilo = STACK.ilo[STACK.lstack];
227 if ( st_ilo != 0 )
228 EPISOR.tkesum +=
229 ((STACK.tke[STACK.lstack] + PAPROP.amdisc[st_ilo+6])
230 * STACK.wt[STACK.lstack]);
231 else
232 EPISOR.tkesum += (STACK.tke[STACK.lstack] * STACK.wt[STACK.lstack]);
233
234 /* Here we ask for the region number of the hitting point.
235 * NREG (LSTACK) = ...
236 * The following line makes the starting region search much more
237 * robust if particles are starting very close to a boundary:
238 */
239 geocrs( STACK.tx[STACK.lstack],
240 STACK.ty[STACK.lstack],
241 STACK.tz[STACK.lstack] );
242
243 Int_t idisc;
244
245 georeg ( STACK.xa[STACK.lstack],
246 STACK.ya[STACK.lstack],
247 STACK.za[STACK.lstack],
248 STACK.nreg[STACK.lstack],
249 idisc);//<-- dummy return variable not used
250 /* Do not change these cards:*/
251 Int_t igeohsm1 = 1;
252 Int_t igeohsm2 = -11;
253 geohsm ( STACK.nhspnt[STACK.lstack], igeohsm1, igeohsm2, LTCLCM.mlattc );
254 STACK.nlattc[STACK.lstack] = LTCLCM.mlattc;
255 soevsv();
256 }
257 }
258 }
259}
260
261