TFluka/source_pp.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_pp source_pp__
  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_pp SOURCE_PP
  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_pp(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           EPISOR.tkesum = zerzer;
  86           lfirst = false;
  87           EPISOR.lussrc = true;
  88           gener  = new AliGenPythia(1);
  89           gener->SetEnergyCMS(14000.);
  90           gener->SetProcess(kPyMb);
  91           stack = new AliStack(1000);
  92           gener->SetStack(stack);
  93           gener->Init();
  94
  95       } else {
  96           //
  97           // Generate event
  98           stack->Reset();
  99           gener->Generate();
 100           Int_t npart = stack->GetNprimary();
 101           for (Int_t part=0; part<npart; part++) {
 102               particle = stack->Particle(part);
 103               Int_t st = particle->GetStatusCode();
 104               if (st != 1) continue;
 105               Int_t pdg = particle->GetPdgCode();
 106               Int_t intfluka = mcihad(pdg);
 107               Int_t ifl = GetFlukaKPTOIP(intfluka);
 108               TVector3 polarisation;
 109               particle->GetPolarisation(polarisation);
 110
 111               STACK.lstack++;
 112
 113               printf("Particle %5d %5d %5d %10s %10.3f %10.3f %10.3f \n", STACK.lstack, pdg, ifl,
 114                      particle->GetName(), particle->Px(), particle->Py(), particle->Pz());
 115
 116
 117
 118               /* Wt is the weight of the particle*/
 119               STACK.wt[STACK.lstack] = oneone;
 120               STARS.weipri += STACK.wt[STACK.lstack];
 121
 122               STACK.ilo[STACK.lstack] = ifl;
 123               /* From this point .....
 124                * Particle generation (1 for primaries)
 125                */
 126               STACK.lo[STACK.lstack] = 1;
 127
 128               /* User dependent flag:*/
 129               STACK.louse[STACK.lstack] = 0;
 130
 131               /* User dependent spare variables:*/
 132               Int_t ispr = 0;
 133               for (ispr = 0; ispr < mkbmx1; ispr++)
 134                   STACK.sparek[STACK.lstack][ispr] = zerzer;
 135
 136               /* User dependent spare flags:*/
 137               for (ispr = 0; ispr < mkbmx2; ispr++)
 138                   STACK.ispark[STACK.lstack][ispr] = 0;
 139
 140               /* Save the track number of the stack particle:*/
 141               STACK.ispark[STACK.lstack][mkbmx2-1] = itrack;
 142               STACK.nparma++;
 143               STACK.numpar[STACK.lstack] = STACK.nparma;
 144               STACK.nevent[STACK.lstack] = 0;
 145               STACK.dfnear[STACK.lstack] = +zerzer;
 146
 147               /* Particle age (s)*/
 148               STACK.agestk[STACK.lstack] = +zerzer;
 149               STACK.aknshr[STACK.lstack] = -twotwo;
 150
 151               /* Group number for "low" energy neutrons, set to 0 anyway*/
 152               STACK.igroup[STACK.lstack] = 0;
 153
 154               /* Kinetic energy */
 155               STACK.tke[STACK.lstack] = particle->Energy() - particle->GetMass();
 156
 157
 158               /* Particle momentum*/
 159               STACK.pmom [STACK.lstack] = particle->P();
 160
 161               /* Cosines (tx,ty,tz)*/
 162               Double_t cosx = particle->Px()/particle->P();
 163               Double_t cosy = particle->Py()/particle->P();
 164               Double_t cosz = TMath::Sqrt(oneone - cosx*cosx - cosy*cosy);
 165               if (particle->Pz() < 0.) cosz = -cosz;
 166               STACK.tx [STACK.lstack] = cosx;
 167               STACK.ty [STACK.lstack] = cosy;
 168               STACK.tz [STACK.lstack] = cosz;
 169
 170               /* Polarization cosines:*/
 171               if (polarisation.Mag()) {
 172                   Double_t cospolx = polarisation.Px()/polarisation.Mag();
 173                   Double_t cospoly = polarisation.Py()/polarisation.Mag();
 174                   Double_t cospolz = sqrt(oneone - cospolx*cospolx - cospoly*cospoly);
 175                   STACK.tx [STACK.lstack] = cospolx;
 176                   STACK.ty [STACK.lstack] = cospoly;
 177                   STACK.tz [STACK.lstack] = cospolz;
 178               }
 179               else {
 180                   STACK.txpol [STACK.lstack] = -twotwo;
 181                   STACK.typol [STACK.lstack] = +zerzer;
 182                   STACK.tzpol [STACK.lstack] = +zerzer;
 183               }
 184
 185               /* Particle coordinates*/
 186               // Vertext coordinates;
 187               STACK.xa [STACK.lstack] = particle->Vx();
 188               STACK.ya [STACK.lstack] = particle->Vy();
 189               STACK.za [STACK.lstack] = particle->Vz();
 190
 191               /*  Calculate the total kinetic energy of the primaries: don't change*/
 192               Int_t st_ilo =  STACK.ilo[STACK.lstack];
 193               if ( st_ilo != 0 )
 194                   EPISOR.tkesum +=
 195                       ((STACK.tke[STACK.lstack] + PAPROP.amdisc[st_ilo+6])
 196                        * STACK.wt[STACK.lstack]);
 197               else
 198                   EPISOR.tkesum += (STACK.tke[STACK.lstack] * STACK.wt[STACK.lstack]);
 199
 200               /*  Here we ask for the region number of the hitting point.
 201                *     NREG (LSTACK) = ...
 202                *  The following line makes the starting region search much more
 203                *  robust if particles are starting very close to a boundary:
 204                */
 205               geocrs( STACK.tx[STACK.lstack],
 206                       STACK.ty[STACK.lstack],
 207                       STACK.tz[STACK.lstack] );
 208
 209               Int_t idisc;
 210
 211               georeg ( STACK.xa[STACK.lstack],
 212                        STACK.ya[STACK.lstack],
 213                        STACK.za[STACK.lstack],
 214                        STACK.nreg[STACK.lstack],
 215                        idisc);//<-- dummy return variable not used
 216               /*  Do not change these cards:*/
 217               Int_t igeohsm1 = 1;
 218               Int_t igeohsm2 = -11;
 219               geohsm ( STACK.nhspnt[STACK.lstack], igeohsm1, igeohsm2, LTCLCM.mlattc );
 220               STACK.nlattc[STACK.lstack] = LTCLCM.mlattc;
 221               soevsv();
 222 //
 223 //  Pre-track actions at for primary tracks
 224 //
 225           }
 226       }
 227   }
 228 }
 229
 230