[u/mrichter/AliRoot.git] / EMCAL / AliEMCALv1.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/* $Id$ */

//_________________________________________________________________________
//*-- Implementation version v1 of EMCAL Manager class 
//*-- An object of this class does not produce digits
//*-- It is the one to use if you do want to produce outputs in TREEH 
//*--                  
//*-- Author: Sahal Yacoob (LBL /UCT)
//*--       : Jennifer Klay (LBL)
// This Class not stores information on all particles prior to EMCAL entry - in order to facilitate analysis.
// This is done by setting fIShunt =2, and flagging all parents of particles entering the EMCAL.

// 15/02/2002 .... Yves Schutz
//  1. fSamplingFraction and fLayerToPreshowerRatio have been removed
//  2. Timing signal is collected and added to hit

// --- ROOT system ---
#include "TParticle.h"
#include "TVirtualMC.h"

// --- Standard library ---

// --- AliRoot header files ---
#include "AliEMCALv1.h"
#include "AliEMCALHit.h"
#include "AliEMCALGeometry.h"
#include "AliRun.h"
#include "AliMC.h"

ClassImp(AliEMCALv1)


//______________________________________________________________________
AliEMCALv1::AliEMCALv1():AliEMCALv0(), fCurPrimary(-1), fCurParent(-1), fCurTrack(-1){
  // ctor

}

//______________________________________________________________________
AliEMCALv1::AliEMCALv1(const char *name, const char *title):
    AliEMCALv0(name,title), fCurPrimary(-1), fCurParent(-1), fCurTrack(-1) {
    // Standard Creator.

    fHits= new TClonesArray("AliEMCALHit",1000);
    gAlice->GetMCApp()->AddHitList(fHits);

    fNhits = 0;
    fIshunt     =  2; // All hits are associated with particles entering the calorimeter
    fTimeCut = 30e-09;
}

//______________________________________________________________________
AliEMCALv1::~AliEMCALv1(){
    // dtor

    if ( fHits) {
	fHits->Delete();
	delete fHits;
	fHits = 0;
    }
}

//______________________________________________________________________
void AliEMCALv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t iparent, Float_t ienergy, 
			Int_t id, Float_t * hits,Float_t * p){
    // Add a hit to the hit list.
    // An EMCAL hit is the sum of all hits in a tower section
    //   originating from the same entering particle 
    Int_t hitCounter;
    
    AliEMCALHit *newHit;
    AliEMCALHit *curHit;
    Bool_t deja = kFALSE;

    newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p);
     for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) {
	curHit = (AliEMCALHit*) (*fHits)[hitCounter];
	// We add hits with the same tracknumber, while GEANT treats
	// primaries succesively
	if(curHit->GetPrimary() != primary) 
	  break;
	if( *curHit == *newHit ) {
	    *curHit = *curHit + *newHit;
	    deja = kTRUE;
	    } // end if
    } // end for hitCounter
    
    if ( !deja ) {
	new((*fHits)[fNhits]) AliEMCALHit(*newHit);
	fNhits++;
    } // end if

    delete newHit;
}
//______________________________________________________________________
void AliEMCALv1::StepManager(void){
  // Accumulates hits as long as the track stays in a tower

  Int_t          id[2];           // (phi, Eta) indices
  // position wrt MRS and energy deposited
  Float_t        xyzte[5]={0.,0.,0.,0.,0.};// position wrt MRS, time and energy deposited
  Float_t        pmom[4]={0.,0.,0.,0.};
  TLorentzVector pos; // Lorentz vector of the track current position.
  TLorentzVector mom; // Lorentz vector of the track current momentum.
  Int_t tracknumber =  gAlice->GetMCApp()->GetCurrentTrackNumber();
  static Float_t ienergy = 0;
  Int_t copy = 0;
  
  AliEMCALGeometry * geom = GetGeometry() ; 

  if(gMC->CurrentVolID(copy) == gMC->VolId("XPHI") ) { // We are in a Scintillator Layer 
    Float_t depositedEnergy ; 
    
    if( ((depositedEnergy = gMC->Edep()) > 0.)  && (gMC->TrackTime() < fTimeCut)){// Track is inside a scintillator and deposits some energy
       if (fCurPrimary==-1) 
	fCurPrimary=gAlice->GetMCApp()->GetPrimary(tracknumber);

      if (fCurParent==-1 || tracknumber != fCurTrack) {
	// Check parentage
	Int_t parent=tracknumber;
	if (fCurParent != -1) {
	  while (parent != fCurParent && parent != -1) {
	    TParticle *part=gAlice->GetMCApp()->Particle(parent);
	    parent=part->GetFirstMother();
	  }
	}
	if (fCurParent==-1 || parent==-1) {
	  Int_t parent=tracknumber;
	  TParticle *part=gAlice->GetMCApp()->Particle(parent);
	  while (parent != -1 && geom->IsInEMCAL(part->Vx(),part->Vy(),part->Vz())) {
	    parent=part->GetFirstMother();
	    if (parent!=-1) 
	      part=gAlice->GetMCApp()->Particle(parent);
	  } 
	  fCurParent=parent;
	  if (fCurParent==-1)
	    Error("StepManager","Cannot find parent");
	  else {
	    TParticle *part=gAlice->GetMCApp()->Particle(fCurParent);
	    ienergy = part->Energy(); 
	  }
	  while (parent != -1) {
	    part=gAlice->GetMCApp()->Particle(parent);
	    part->SetBit(kKeepBit);
	    parent=part->GetFirstMother();
	  }
	}
	fCurTrack=tracknumber;
      }    
      gMC->TrackPosition(pos);
      xyzte[0] = pos[0];
      xyzte[1] = pos[1];
      xyzte[2] = pos[2];
      xyzte[3] = gMC->TrackTime() ;       
      
      gMC->TrackMomentum(mom);
      pmom[0] = mom[0];
      pmom[1] = mom[1];
      pmom[2] = mom[2];
      pmom[3] = mom[3];
      
      gMC->CurrentVolOffID(1, id[0]); // get the POLY copy number;
      gMC->CurrentVolID(id[1]); // get the phi number inside the layer
      
      Int_t tower = (id[0]-1) % geom->GetNZ() + 1 + (id[1] - 1) * geom->GetNZ() ;  
      Int_t layer = static_cast<Int_t>((id[0]-1)/(geom->GetNZ())) + 1 ; 
      Int_t absid = tower; 
      Int_t nlayers = geom->GetNECLayers();
      if ((layer > nlayers)||(layer<1)) 
        Fatal("StepManager", "Wrong calculation of layer number: layer = %d > %d\n", layer, nlayers) ;

      Float_t lightYield =  depositedEnergy ;
      // Apply Birk's law (copied from G3BIRK)

      if (gMC->TrackCharge()!=0) { // Check
	  Float_t BirkC1_mod = 0;
	if (fBirkC0==1){ // Apply correction for higher charge states
	  if (TMath::Abs(gMC->TrackCharge())>=2)
	    BirkC1_mod=fBirkC1*7.2/12.6;
	  else
	    BirkC1_mod=fBirkC1;
	}
	Float_t dedxcm;
	if (gMC->TrackStep()>0) 
	  dedxcm=1000.*gMC->Edep()/gMC->TrackStep();
	else
	  dedxcm=0;
	lightYield=lightYield/(1.+BirkC1_mod*dedxcm+fBirkC2*dedxcm*dedxcm);
      } 

      // use sampling fraction to get original energy --HG
      xyzte[4] = lightYield * geom->GetSampling();
        
      if (gDebug == 2) 
	printf("StepManager: id0 = %d, id1 = %d, absid = %d tower = %d layer = %d energy = %f\n", id[0], id[1], absid, tower, layer, xyzte[4]) ;

      AddHit(fIshunt, fCurPrimary,tracknumber, fCurParent, ienergy, absid,  xyzte, pmom);
    } // there is deposited energy
  }
}

void AliEMCALv1::RemapTrackHitIDs(Int_t *map) {
  // remap track index numbers for primary and parent indices
  // (Called by AliStack::PurifyKine)
  if (Hits()==0)
    return;
  TIter hit_it(Hits());
  Int_t i_hit=0;
  while (AliEMCALHit *hit=dynamic_cast<AliEMCALHit*>(hit_it()) ) {
    if (map[hit->GetIparent()]==-99)
      cout << "Remapping, found -99 for parent id " << hit->GetIparent() << ", " << map[hit->GetIparent()] << ", i_hit " << i_hit << endl;
    hit->SetIparent(map[hit->GetIparent()]);
    if (map[hit->GetPrimary()]==-99)
      cout << "Remapping, found -99 for primary id " << hit->GetPrimary() << ", " << map[hit->GetPrimary()] << ", i_hit " << i_hit << endl;
    hit->SetPrimary(map[hit->GetPrimary()]);
    i_hit++;
  }
}

void AliEMCALv1::FinishPrimary() {
  fCurPrimary=-1;
  fCurParent=-1;
  fCurTrack=-1;
}
Commit	Line	Data
b13bbe81	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	7	* Permission to use, copy, modify and distribute this software and its *
	8	* documentation strictly for non-commercial purposes is hereby granted *
	9	* without fee, provided that the above copyright notice appears in all *
	10	* copies and that both the copyright notice and this permission notice *
	11	* appear in the supporting documentation. The authors make no claims *
	12	* about the suitability of this software for any purpose. It is *
	13	* provided "as is" without express or implied warranty. *
	14	**************************************************************************/
	15
	16	/* $Id$ */
	17
	18	//_________________________________________________________________________
fdebddeb	19	//*-- Implementation version v1 of EMCAL Manager class
	20	//*-- An object of this class does not produce digits
	21	//*-- It is the one to use if you do want to produce outputs in TREEH
	22	//*--
b13bbe81	23	//*-- Author: Sahal Yacoob (LBL /UCT)
b13bbe81	24	//*-- : Jennifer Klay (LBL)
fceb09ed	25	// This Class not stores information on all particles prior to EMCAL entry - in order to facilitate analysis.
	26	// This is done by setting fIShunt =2, and flagging all parents of particles entering the EMCAL.
	27
1f4d29d2	28	// 15/02/2002 .... Yves Schutz
	29	// 1. fSamplingFraction and fLayerToPreshowerRatio have been removed
	30	// 2. Timing signal is collected and added to hit
b13bbe81	31
b13bbe81	32	// --- ROOT system ---
fceb09ed	33	#include "TParticle.h"
5d12ce38	34	#include "TVirtualMC.h"
b13bbe81	35
	36	// --- Standard library ---
	37
b13bbe81	38	// --- AliRoot header files ---
b13bbe81	39	#include "AliEMCALv1.h"
	40	#include "AliEMCALHit.h"
	41	#include "AliEMCALGeometry.h"
b13bbe81	42	#include "AliRun.h"
5d12ce38	43	#include "AliMC.h"
b13bbe81	44
	45	ClassImp(AliEMCALv1)
	46
	47
	48	//______________________________________________________________________
ab37d09c	49	AliEMCALv1::AliEMCALv1():AliEMCALv0(), fCurPrimary(-1), fCurParent(-1), fCurTrack(-1){
b13bbe81	50	// ctor
7b6cc0b5	51
b13bbe81	52	}
1f4d29d2	53
b13bbe81	54	//______________________________________________________________________
b13bbe81	55	AliEMCALv1::AliEMCALv1(const char name, const char title):
ab37d09c	56	AliEMCALv0(name,title), fCurPrimary(-1), fCurParent(-1), fCurTrack(-1) {
b13bbe81	57	// Standard Creator.
	58
	59	fHits= new TClonesArray("AliEMCALHit",1000);
5d12ce38	60	gAlice->GetMCApp()->AddHitList(fHits);
b13bbe81	61
b13bbe81	62	fNhits = 0;
fceb09ed	63	fIshunt = 2; // All hits are associated with particles entering the calorimeter
9b358506	64	fTimeCut = 30e-09;
b13bbe81	65	}
1f4d29d2	66
b13bbe81	67	//______________________________________________________________________
	68	AliEMCALv1::~AliEMCALv1(){
	69	// dtor
	70
	71	if ( fHits) {
	72	fHits->Delete();
	73	delete fHits;
	74	fHits = 0;
	75	}
	76	}
ab37d09c	77
b13bbe81	78	//______________________________________________________________________
61e0abb5	79	void AliEMCALv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t iparent, Float_t ienergy,
61e0abb5	80	Int_t id, Float_t * hits,Float_t * p){
b13bbe81	81	// Add a hit to the hit list.
fdebddeb	82	// An EMCAL hit is the sum of all hits in a tower section
7b6cc0b5	83	// originating from the same entering particle
b13bbe81	84	Int_t hitCounter;
	85
	86	AliEMCALHit *newHit;
	87	AliEMCALHit *curHit;
	88	Bool_t deja = kFALSE;
	89
61e0abb5	90	newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p);
fdebddeb	91	for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) {
b13bbe81	92	curHit = (AliEMCALHit) (fHits)[hitCounter];
61e0abb5	93	// We add hits with the same tracknumber, while GEANT treats
b13bbe81	94	// primaries succesively
7b6cc0b5	95	if(curHit->GetPrimary() != primary)
7b6cc0b5	96	break;
b13bbe81	97	if( curHit == newHit ) {
	98	curHit = curHit + *newHit;
	99	deja = kTRUE;
fdebddeb	100	} // end if
b13bbe81	101	} // end for hitCounter
fdebddeb	102
b13bbe81	103	if ( !deja ) {
	104	new((fHits)[fNhits]) AliEMCALHit(newHit);
	105	fNhits++;
	106	} // end if
	107
	108	delete newHit;
	109	}
	110	//______________________________________________________________________
	111	void AliEMCALv1::StepManager(void){
8ddf73e5	112	// Accumulates hits as long as the track stays in a tower
1f4d29d2	113
fdebddeb	114	Int_t id[2]; // (phi, Eta) indices
1f4d29d2	115	// position wrt MRS and energy deposited
	116	Float_t xyzte[5]={0.,0.,0.,0.,0.};// position wrt MRS, time and energy deposited
	117	Float_t pmom[4]={0.,0.,0.,0.};
	118	TLorentzVector pos; // Lorentz vector of the track current position.
	119	TLorentzVector mom; // Lorentz vector of the track current momentum.
5d12ce38	120	Int_t tracknumber = gAlice->GetMCApp()->GetCurrentTrackNumber();
1f4d29d2	121	static Float_t ienergy = 0;
1f4d29d2	122	Int_t copy = 0;
1f4d29d2	123
05a92d59	124	AliEMCALGeometry * geom = GetGeometry() ;
05a92d59	125
1f4d29d2	126	if(gMC->CurrentVolID(copy) == gMC->VolId("XPHI") ) { // We are in a Scintillator Layer
dfce7eb2	127	Float_t depositedEnergy ;
61e0abb5	128
9b358506	129	if( ((depositedEnergy = gMC->Edep()) > 0.) && (gMC->TrackTime() < fTimeCut)){// Track is inside a scintillator and deposits some energy
ab37d09c	130	if (fCurPrimary==-1)
	131	fCurPrimary=gAlice->GetMCApp()->GetPrimary(tracknumber);
	132
	133	if (fCurParent==-1 \|\| tracknumber != fCurTrack) {
	134	// Check parentage
	135	Int_t parent=tracknumber;
	136	if (fCurParent != -1) {
	137	while (parent != fCurParent && parent != -1) {
	138	TParticle *part=gAlice->GetMCApp()->Particle(parent);
	139	parent=part->GetFirstMother();
	140	}
	141	}
	142	if (fCurParent==-1 \|\| parent==-1) {
	143	Int_t parent=tracknumber;
	144	TParticle *part=gAlice->GetMCApp()->Particle(parent);
	145	while (parent != -1 && geom->IsInEMCAL(part->Vx(),part->Vy(),part->Vz())) {
	146	parent=part->GetFirstMother();
	147	if (parent!=-1)
	148	part=gAlice->GetMCApp()->Particle(parent);
	149	}
	150	fCurParent=parent;
	151	if (fCurParent==-1)
	152	Error("StepManager","Cannot find parent");
	153	else {
	154	TParticle *part=gAlice->GetMCApp()->Particle(fCurParent);
	155	ienergy = part->Energy();
	156	}
	157	while (parent != -1) {
	158	part=gAlice->GetMCApp()->Particle(parent);
	159	part->SetBit(kKeepBit);
	160	parent=part->GetFirstMother();
	161	}
	162	}
	163	fCurTrack=tracknumber;
	164	}
dfce7eb2	165	gMC->TrackPosition(pos);
	166	xyzte[0] = pos[0];
	167	xyzte[1] = pos[1];
	168	xyzte[2] = pos[2];
	169	xyzte[3] = gMC->TrackTime() ;
	170
	171	gMC->TrackMomentum(mom);
	172	pmom[0] = mom[0];
	173	pmom[1] = mom[1];
	174	pmom[2] = mom[2];
	175	pmom[3] = mom[3];
	176
	177	gMC->CurrentVolOffID(1, id[0]); // get the POLY copy number;
	178	gMC->CurrentVolID(id[1]); // get the phi number inside the layer
dfce7eb2	179
de56e4f9	180	Int_t tower = (id[0]-1) % geom->GetNZ() + 1 + (id[1] - 1) * geom->GetNZ() ;
7b6cc0b5	181	Int_t layer = static_cast<Int_t>((id[0]-1)/(geom->GetNZ())) + 1 ;
fdebddeb	182	Int_t absid = tower;
	183	Int_t nlayers = geom->GetNECLayers();
	184	if ((layer > nlayers)\|\|(layer<1))
	185	Fatal("StepManager", "Wrong calculation of layer number: layer = %d > %d\n", layer, nlayers) ;
	186
7b6cc0b5	187	Float_t lightYield = depositedEnergy ;
ab37d09c	188	// Apply Birk's law (copied from G3BIRK)
	189
	190	if (gMC->TrackCharge()!=0) { // Check
	191	Float_t BirkC1_mod = 0;
	192	if (fBirkC0==1){ // Apply correction for higher charge states
41289e86	193	if (TMath::Abs(gMC->TrackCharge())>=2)
ab37d09c	194	BirkC1_mod=fBirkC1*7.2/12.6;
	195	else
	196	BirkC1_mod=fBirkC1;
	197	}
	198	Float_t dedxcm;
	199	if (gMC->TrackStep()>0)
	200	dedxcm=1000.*gMC->Edep()/gMC->TrackStep();
	201	else
	202	dedxcm=0;
	203	lightYield=lightYield/(1.+BirkC1_moddedxcm+fBirkC2dedxcm*dedxcm);
	204	}
7b6cc0b5	205
ab37d09c	206	// use sampling fraction to get original energy --HG
	207	xyzte[4] = lightYield * geom->GetSampling();
	208
7b6cc0b5	209	if (gDebug == 2)
fdebddeb	210	printf("StepManager: id0 = %d, id1 = %d, absid = %d tower = %d layer = %d energy = %f\n", id[0], id[1], absid, tower, layer, xyzte[4]) ;
7b6cc0b5	211
ab37d09c	212	AddHit(fIshunt, fCurPrimary,tracknumber, fCurParent, ienergy, absid, xyzte, pmom);
b13bbe81	213	} // there is deposited energy
1f4d29d2	214	}
b13bbe81	215	}
ab37d09c	216
	217	void AliEMCALv1::RemapTrackHitIDs(Int_t *map) {
	218	// remap track index numbers for primary and parent indices
	219	// (Called by AliStack::PurifyKine)
	220	if (Hits()==0)
	221	return;
	222	TIter hit_it(Hits());
	223	Int_t i_hit=0;
	224	while (AliEMCALHit hit=dynamic_cast<AliEMCALHit>(hit_it()) ) {
	225	if (map[hit->GetIparent()]==-99)
	226	cout << "Remapping, found -99 for parent id " << hit->GetIparent() << ", " << map[hit->GetIparent()] << ", i_hit " << i_hit << endl;
	227	hit->SetIparent(map[hit->GetIparent()]);
	228	if (map[hit->GetPrimary()]==-99)
	229	cout << "Remapping, found -99 for primary id " << hit->GetPrimary() << ", " << map[hit->GetPrimary()] << ", i_hit " << i_hit << endl;
	230	hit->SetPrimary(map[hit->GetPrimary()]);
	231	i_hit++;
	232	}
	233	}
	234
	235	void AliEMCALv1::FinishPrimary() {
	236	fCurPrimary=-1;
	237	fCurParent=-1;
	238	fCurTrack=-1;
	239	}