[u/mrichter/AliRoot.git] / TFluka / source_bg.cxx

#define METHODDEBUG

// Fortran 
#include "TCallf77.h"

// Fluka commons
#include "Fdblprc.h"  //(DBLPRC) fluka common
#include "Fdimpar.h"  //(DIMPAR) fluka parameters
#include "Fepisor.h"  //(EPISOR) fluka common
#include "Fstack.h"   //(STACK)  fluka common
#include "Fstars.h"   //(STARS)  fluka common
#include "Fbeam.h"    //(BEAM)   fluka common
#include "Fpaprop.h"  //(PAPROP) fluka common
#include "Fltclcm.h"  //(LTCLCM) fluka common
#include "Fpart.h"  
//#include "Fcaslim.h"  //(CASLIM) fluka common

//Virutal MC
#include "AliGenerator.h"
#include "AliStack.h"
#include "../THijing/AliGenHijing.h"

#include "TVirtualMCStack.h"
#include "TParticle.h"
#include "TVector3.h"
#include "TRandom.h"

//Other
#include <Riostream.h>

#ifndef WIN32
# define source source_
# define geocrs geocrs_
# define georeg georeg_
# define geohsm geohsm_
# define soevsv soevsv_
# define mcihad mcihad_
# define source_bg source_bg__
#else
# define source SOURCE
# define geocrs GEOCRS
# define georeg GEOREG
# define geohsm GEOHSM
# define soevsv SOEVSV
# define mcihad MCIHAD
# define source_bg SOURCE_BG
#endif

extern "C" {
  //
  // Prototypes for FLUKA functions
  //
  void type_of_call geocrs(Double_t &, Double_t &, Double_t &);
  void type_of_call georeg(Double_t &, Double_t &, Double_t &, 
			   Int_t &, Int_t &);
  void type_of_call geohsm(Int_t &, Int_t &, Int_t &, Int_t &);
  void type_of_call soevsv();
  int  type_of_call mcihad(const int&);
 /*
   *----------------------------------------------------------------------*
   *                                                                      *
   *     Created on 07 january 1990   by    Alfredo Ferrari & Paola Sala  *
   *                                                   Infn - Milan       *
   *                                                                      *
   *     Last change on 21-jun-98     by    Alfredo Ferrari               *
   *                                                                      *
   *     C++ version on 27-sep-02     by    Isidro Gonzalez               *
   *                                                                      *
   *  This is just an example of a possible user written source routine.  *
   *  note that the beam card still has some meaning - in the scoring the *
   *  maximum momentum used in deciding the binning is taken from the     *
   *  beam momentum.  Other beam card parameters are obsolete.            *
   *                                                                      *
   *----------------------------------------------------------------------*/

  void source_bg(Int_t& nomore) {

      static Bool_t lfirst       = true;
      static AliGenHijing* gener = 0;
      static AliStack* stack     = 0;	

      nomore = 0;
      TParticle* particle;
      Int_t itrack = -1;
      if (lfirst) {
	  EPISOR.tkesum = zerzer;
	  lfirst = false;
	  EPISOR.lussrc = true;
//
// The generator
//
	  gener  = new AliGenHijing(-1);
// beam energy 
	  gener->SetEnergyCMS(7000.);
// reference frame
	  gener->SetReferenceFrame("LAB");
// projectile
	  gener->SetProjectile("P",  1,  1);
	  gener->SetTarget    ("A", 16,  8);
	  gener->SetBoostLHC(0);
	  
// tell hijing to keep the full parent child chain
	  gener->KeepFullEvent();
// enable jet quenching
	  gener->SetJetQuenching(0);
// enable shadowing
	  gener->SetShadowing(0);
// neutral pion and heavy particle decays switched off
	  gener->SetDecaysOff(1);
// Don't track spectators
	  gener->SetSpectators(0);
// The particle stack
	  stack = new AliStack(1000);
	  gener->SetStack(stack);
	  gener->Init();

      } else {
	  //
	  // Generate event
	  stack->Reset();
	  gener->Generate();
	  Int_t npart = stack->GetNprimary();
	  // Vertex
	  Float_t za   =  4000. * gRandom->Rndm() -2000.;
	  // Direction
//	  Float_t dir  = (za < 0.) ? 1. : -1.;
	  Float_t dir  = (gRandom->Rndm() < 0.5)? 1. : -1;
	  
	  for (Int_t part=0; part<npart; part++) {
	      particle = stack->Particle(part);
	      Int_t ic = particle->GetFirstDaughter();
	      if (ic != -1) continue;
	      Int_t pdg = particle->GetPdgCode();
	      Int_t intfluka = mcihad(pdg);
	      Int_t ifl = GetFlukaKPTOIP(intfluka);
	      TVector3 polarisation;
	      particle->GetPolarisation(polarisation);

	      STACK.lstack++;

	      printf("Particle %5d %5d %5d %10s %10.3f %10.3f %10.3f \n", STACK.lstack, pdg, ifl, 
		     particle->GetName(), particle->Px(), particle->Py(), particle->Pz());
	      

	      
	      /* Wt is the weight of the particle*/
	      STACK.wt[STACK.lstack] = oneone;
	      STARS.weipri += STACK.wt[STACK.lstack];
	      
	      STACK.ilo[STACK.lstack] = ifl;
	      /* From this point .....
	       * Particle generation (1 for primaries)
	       */
	      STACK.lo[STACK.lstack] = 1;
	      
	      /* User dependent flag:*/
	      STACK.louse[STACK.lstack] = 0;
	      
	      /* User dependent spare variables:*/
	      Int_t ispr = 0;
	      for (ispr = 0; ispr < mkbmx1; ispr++)
		  STACK.sparek[STACK.lstack][ispr] = zerzer;
	      
	      /* User dependent spare flags:*/
	      for (ispr = 0; ispr < mkbmx2; ispr++)
		  STACK.ispark[STACK.lstack][ispr] = 0;
	      
	      /* Save the track number of the stack particle:*/
	      STACK.ispark[STACK.lstack][mkbmx2-1] = itrack;
	      STACK.nparma++;
	      STACK.numpar[STACK.lstack] = STACK.nparma;
	      STACK.nevent[STACK.lstack] = 0;
	      STACK.dfnear[STACK.lstack] = +zerzer;
	      
	      /* Particle age (s)*/
	      STACK.agestk[STACK.lstack] = +zerzer;
	      STACK.aknshr[STACK.lstack] = -twotwo;
	      
	      /* Group number for "low" energy neutrons, set to 0 anyway*/
	      STACK.igroup[STACK.lstack] = 0;
	      
	      /* Kinetic energy */
	      STACK.tke[STACK.lstack] = particle->Energy() - particle->GetMass();
	      
	      
	      /* Particle momentum*/
	      STACK.pmom [STACK.lstack] = particle->P();
	      
	      /* Cosines (tx,ty,tz)*/
	      Double_t cosx = particle->Px()/particle->P();
	      Double_t cosy = particle->Py()/particle->P();
	      Double_t cosz = TMath::Sqrt(oneone - cosx*cosx - cosy*cosy);
	      if (particle->Pz() < 0.)   cosz = -cosz;
	      cosz *= dir;
	      
	      STACK.tx [STACK.lstack] = cosx;
	      STACK.ty [STACK.lstack] = cosy;
	      STACK.tz [STACK.lstack] = cosz;
	      
	      /* Polarization cosines:*/
	      if (polarisation.Mag()) {
		  Double_t cospolx = polarisation.Px()/polarisation.Mag();
		  Double_t cospoly = polarisation.Py()/polarisation.Mag();
		  Double_t cospolz = sqrt(oneone - cospolx*cospolx - cospoly*cospoly);
		  STACK.tx [STACK.lstack] = cospolx;
		  STACK.ty [STACK.lstack] = cospoly;
		  STACK.tz [STACK.lstack] = cospolz;
	      }
	      else {
		  STACK.txpol [STACK.lstack] = -twotwo;
		  STACK.typol [STACK.lstack] = +zerzer;
		  STACK.tzpol [STACK.lstack] = +zerzer;
	      }
	      
	      /* Particle coordinates*/
	      STACK.xa [STACK.lstack] = particle->Vx();
	      STACK.ya [STACK.lstack] = particle->Vy();
	      STACK.za [STACK.lstack] = za;
	      
	      printf("Particle Vertex %10.3f %10.3f %10.3f %10.3f \n",  
		     STACK.xa [STACK.lstack],  STACK.ya [STACK.lstack],  STACK.za [STACK.lstack], dir);
	      
	      
	      
	      /*  Calculate the total kinetic energy of the primaries: don't change*/
	      Int_t st_ilo =  STACK.ilo[STACK.lstack];
	      if ( st_ilo != 0 )
		  EPISOR.tkesum += 
		      ((STACK.tke[STACK.lstack] + PAPROP.amdisc[st_ilo+6])
		       * STACK.wt[STACK.lstack]);
	      else
		  EPISOR.tkesum += (STACK.tke[STACK.lstack] * STACK.wt[STACK.lstack]);
	      
	      /*  Here we ask for the region number of the hitting point.
	       *     NREG (LSTACK) = ...
	       *  The following line makes the starting region search much more
	       *  robust if particles are starting very close to a boundary:
	       */
	      geocrs( STACK.tx[STACK.lstack], 
		      STACK.ty[STACK.lstack], 
		      STACK.tz[STACK.lstack] );
	      
	      Int_t idisc;
	      
	      georeg ( STACK.xa[STACK.lstack], 
		       STACK.ya[STACK.lstack], 
		       STACK.za[STACK.lstack],
		       STACK.nreg[STACK.lstack], 
		       idisc);//<-- dummy return variable not used
	      /*  Do not change these cards:*/
	      Int_t igeohsm1 = 1;
	      Int_t igeohsm2 = -11;
	      geohsm ( STACK.nhspnt[STACK.lstack], igeohsm1, igeohsm2, LTCLCM.mlattc );
	      STACK.nlattc[STACK.lstack] = LTCLCM.mlattc;
	      soevsv();
	  }
      }
  }
}
Commit	Line	Data
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
	49	extern "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);
5929ad29	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.;
5929ad29	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 - cosxcosx - cosycosy);
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 - cospolxcospolx - cospolycospoly);
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