TFluka/source_f.cxx

   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 "../PYTHIA6/AliGenPythia.h"
  22
  23 #include "TVirtualMCStack.h"
  24 #include "TParticle.h"
  25 #include "TVector3.h"
  26
  27 //Other
  28 #include <Riostream.h>
  29
  30 #ifndef WIN32
  31 # define source source_
  32 # define geocrs geocrs_
  33 # define georeg georeg_
  34 # define geohsm geohsm_
  35 # define soevsv soevsv_
  36 # define mcihad mcihad_
  37 # define source_f source_f__
  38 #else
  39 # define source SOURCE
  40 # define geocrs GEOCRS
  41 # define georeg GEOREG
  42 # define geohsm GEOHSM
  43 # define soevsv SOEVSV
  44 # define mcihad MCIHAD
  45 # define source_f SOURCE_F
  46 #endif
  47
  48 extern "C" {
  49   //
  50   // Prototypes for FLUKA functions
  51   //
  52   void type_of_call geocrs(Double_t &, Double_t &, Double_t &);
  53   void type_of_call georeg(Double_t &, Double_t &, Double_t &,
  54                            Int_t &, Int_t &);
  55   void type_of_call geohsm(Int_t &, Int_t &, Int_t &, Int_t &);
  56   void type_of_call soevsv();
  57   int  type_of_call mcihad(const int&);
  58  /*
  59    *----------------------------------------------------------------------*
  60    *                                                                      *
  61    *     Created on 07 january 1990   by    Alfredo Ferrari & Paola Sala  *
  62    *                                                   Infn - Milan       *
  63    *                                                                      *
  64    *     Last change on 21-jun-98     by    Alfredo Ferrari               *
  65    *                                                                      *
  66    *     C++ version on 27-sep-02     by    Isidro Gonzalez               *
  67    *                                                                      *
  68    *  This is just an example of a possible user written source routine.  *
  69    *  note that the beam card still has some meaning - in the scoring the *
  70    *  maximum momentum used in deciding the binning is taken from the     *
  71    *  beam momentum.  Other beam card parameters are obsolete.            *
  72    *                                                                      *
  73    *----------------------------------------------------------------------*/
  74
  75   void source_f(Int_t& nomore) {
  76
  77       static Bool_t lfirst       = true;
  78       static AliGenPythia* gener = 0;
  79       static AliStack* stack     = 0;
  80
  81       nomore = 0;
  82       TParticle* particle;
  83       Int_t itrack = -1;
  84       if (lfirst) {
  85           printf("source_f first call \n");
  86           EPISOR.tkesum = zerzer;
  87           lfirst = false;
  88           EPISOR.lussrc = true;
  89           gener  = new AliGenPythia(1);
  90           gener->SetEnergyCMS(14000.);
  91           gener->SetProcess(kPyMb);
  92           stack = new AliStack(1000);
  93           gener->SetStack(stack);
  94           gener->Init();
  95
  96       } else {
  97           //
  98           // Generate event
  99           printf("Calling Generate() %p \n", gener);
 100           stack->Reset();
 101           gener->Generate();
 102           Int_t npart = stack->GetNprimary();
 103           printf("%d Particles on the stack \n", npart);
 104           for (Int_t part=0; part<npart; part++) {
 105               particle = stack->Particle(part);
 106               Int_t st = particle->GetStatusCode();
 107               if (st != 1) continue;
 108               Int_t pdg = particle->GetPdgCode();
 109               Int_t intfluka = mcihad(pdg);
 110               Int_t ifl = GetFlukaKPTOIP(intfluka);
 111               TVector3 polarisation;
 112               particle->GetPolarisation(polarisation);
 113
 114               STACK.lstack++;
 115
 116               printf("Particle %5d %5d %5d %10s %10.3f %10.3f %10.3f \n", STACK.lstack, pdg, ifl,
 117                      particle->GetName(), particle->Px(), particle->Py(), particle->Pz());
 118
 119
 120
 121               /* Wt is the weight of the particle*/
 122               STACK.wt[STACK.lstack] = oneone;
 123               STARS.weipri += STACK.wt[STACK.lstack];
 124
 125               STACK.ilo[STACK.lstack] = ifl;
 126               /* From this point .....
 127                * Particle generation (1 for primaries)
 128                */
 129               STACK.lo[STACK.lstack] = 1;
 130
 131               /* User dependent flag:*/
 132               STACK.louse[STACK.lstack] = 0;
 133
 134               /* User dependent spare variables:*/
 135               Int_t ispr = 0;
 136               for (ispr = 0; ispr < mkbmx1; ispr++)
 137                   STACK.sparek[STACK.lstack][ispr] = zerzer;
 138
 139               /* User dependent spare flags:*/
 140               for (ispr = 0; ispr < mkbmx2; ispr++)
 141                   STACK.ispark[STACK.lstack][ispr] = 0;
 142
 143               /* Save the track number of the stack particle:*/
 144               STACK.ispark[STACK.lstack][mkbmx2-1] = itrack;
 145               STACK.nparma++;
 146               STACK.numpar[STACK.lstack] = STACK.nparma;
 147               STACK.nevent[STACK.lstack] = 0;
 148               STACK.dfnear[STACK.lstack] = +zerzer;
 149
 150               /* Particle age (s)*/
 151               STACK.agestk[STACK.lstack] = +zerzer;
 152               STACK.aknshr[STACK.lstack] = -twotwo;
 153
 154               /* Group number for "low" energy neutrons, set to 0 anyway*/
 155               STACK.igroup[STACK.lstack] = 0;
 156
 157               /* Kinetic energy */
 158               STACK.tke[STACK.lstack] = particle->Energy() - particle->GetMass();
 159
 160
 161               /* Particle momentum*/
 162               STACK.pmom [STACK.lstack] = particle->P();
 163
 164               /* Cosines (tx,ty,tz)*/
 165               Double_t cosx = particle->Px()/particle->P();
 166               Double_t cosy = particle->Py()/particle->P();
 167               Double_t cosz = TMath::Sqrt(oneone - cosx*cosx - cosy*cosy);
 168               if (particle->Pz() < 0.) cosz = -cosz;
 169               STACK.tx [STACK.lstack] = cosx;
 170               STACK.ty [STACK.lstack] = cosy;
 171               STACK.tz [STACK.lstack] = cosz;
 172
 173               /* Polarization cosines:*/
 174               if (polarisation.Mag()) {
 175                   Double_t cospolx = polarisation.Px()/polarisation.Mag();
 176                   Double_t cospoly = polarisation.Py()/polarisation.Mag();
 177                   Double_t cospolz = sqrt(oneone - cospolx*cospolx - cospoly*cospoly);
 178                   STACK.tx [STACK.lstack] = cospolx;
 179                   STACK.ty [STACK.lstack] = cospoly;
 180                   STACK.tz [STACK.lstack] = cospolz;
 181               }
 182               else {
 183                   STACK.txpol [STACK.lstack] = -twotwo;
 184                   STACK.typol [STACK.lstack] = +zerzer;
 185                   STACK.tzpol [STACK.lstack] = +zerzer;
 186               }
 187
 188               /* Particle coordinates*/
 189               // Vertext coordinates;
 190               STACK.xa [STACK.lstack] = particle->Vx();
 191               STACK.ya [STACK.lstack] = particle->Vy();
 192               STACK.za [STACK.lstack] = particle->Vz();
 193
 194               /*  Calculate the total kinetic energy of the primaries: don't change*/
 195               Int_t st_ilo =  STACK.ilo[STACK.lstack];
 196               if ( st_ilo != 0 )
 197                   EPISOR.tkesum +=
 198                       ((STACK.tke[STACK.lstack] + PAPROP.amdisc[st_ilo+6])
 199                        * STACK.wt[STACK.lstack]);
 200               else
 201                   EPISOR.tkesum += (STACK.tke[STACK.lstack] * STACK.wt[STACK.lstack]);
 202
 203               /*  Here we ask for the region number of the hitting point.
 204                *     NREG (LSTACK) = ...
 205                *  The following line makes the starting region search much more
 206                *  robust if particles are starting very close to a boundary:
 207                */
 208               geocrs( STACK.tx[STACK.lstack],
 209                       STACK.ty[STACK.lstack],
 210                       STACK.tz[STACK.lstack] );
 211
 212               Int_t idisc;
 213
 214               georeg ( STACK.xa[STACK.lstack],
 215                        STACK.ya[STACK.lstack],
 216                        STACK.za[STACK.lstack],
 217                        STACK.nreg[STACK.lstack],
 218                        idisc);//<-- dummy return variable not used
 219               /*  Do not change these cards:*/
 220               Int_t igeohsm1 = 1;
 221               Int_t igeohsm2 = -11;
 222               geohsm ( STACK.nhspnt[STACK.lstack], igeohsm1, igeohsm2, LTCLCM.mlattc );
 223               STACK.nlattc[STACK.lstack] = LTCLCM.mlattc;
 224               soevsv();
 225 //
 226 //  Pre-track actions at for primary tracks
 227 //
 228           }
 229       }
 230   }
 231 }
 232
 233