-#include <iostream.h>
+/**************************************************************************
+ * 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. *
+ **************************************************************************/
+
+/*
+$Id$
+*/
+#include <Riostream.h>
#include <TRandom.h>
#include <TH1.h>
#include <TMath.h>
#include <TString.h>
#include <TParticle.h>
-
#include "AliRun.h"
#include "AliITS.h"
#include "AliITShit.h"
-#include "AliITSdigit.h"
+#include "AliITSdigitSPD.h"
#include "AliITSmodule.h"
#include "AliITSMapA2.h"
#include "AliITSpList.h"
#include "AliITSsimulationSPDdubna.h"
-#include "AliITSsegmentation.h"
-#include "AliITSresponse.h"
-
-
+#include "AliITSsegmentationSPD.h"
+#include "AliITSresponseSPD.h"
+//#define DEBUG
ClassImp(AliITSsimulationSPDdubna)
////////////////////////////////////////////////////////////////////////
+// Version: 1
+// Modified by Bjorn S. Nilsen
// Version: 0
// Written by Boris Batyunya
// December 20 1999
//
-// AliITSsimulationSPDdubna is the simulation of SPDs
+// AliITSsimulationSPDdubna is to do the simulation of SPDs.
//______________________________________________________________________
-
-
-AliITSsimulationSPDdubna::AliITSsimulationSPDdubna(){
- // constructor
-
- fResponse = 0;
- fSegmentation = 0;
- fMapA2 = 0;
- fpList = 0;
- fModule = 0;
- fEvent = 0;
- fHis = 0;
- fNoise = 0.;
- fBaseline = 0.;
- fNPixelsZ = 0;
- fNPixelsX = 0;
+AliITSsimulationSPDdubna::AliITSsimulationSPDdubna():
+AliITSsimulation(),
+fHis(0),
+fSPDname(),
+fCoupling(0){
+ // Default constructor.
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // A default constructed AliITSsimulationSPDdubna class.
+
+ if(GetDebug(1)) Info("AliITSsimulationSPDdubda()",
+ "Calling degault constructor");
}
//______________________________________________________________________
AliITSsimulationSPDdubna::AliITSsimulationSPDdubna(AliITSsegmentation *seg,
- AliITSresponse *resp){
+ AliITSresponse *resp,Int_t cup):
+AliITSsimulation(seg,resp),
+fHis(0),
+fSPDname(),
+fCoupling(cup){
// standard constructor
-
- fHis = 0;
- fResponse = resp;
- fSegmentation = seg;
- fModule = 0;
- fEvent = 0;
-
- fNPixelsZ=fSegmentation->Npz();
- fNPixelsX=fSegmentation->Npx();
-
- fResponse->GetNoiseParam(fNoise,fBaseline);
-
- fMapA2 = new AliITSMapA2(fSegmentation);
-
- fpList = new AliITSpList(fNPixelsZ+1,fNPixelsX+1);
-
+ // Inputs:
+ // AliITSsegmentation *seg A pointer to the segmentation class
+ // to be used for this simulation
+ // AliITSresponse *resp A pointer to the responce class to
+ // be used for this simulation
+ // Int_t cup The type of coupling to be used
+ // =1 uses SetCoupling, =2 uses SetCouplingOld
+ // With diffusion tured off
+ // =3 uses SetCoupling, =4 uses SetCouplingOld
+ // with diffusion on other, no coupling.
+ // Outputs:
+ // none.
+ // Return:
+ // A default constructed AliITSsimulationSPDdubna class.
+
+ if(GetDebug(1)) Info("AliITSsimulationSPDdubda",
+ "Calling degault constructor seg=%p resp=%p cup=%d",
+ seg,resp,cup);
+ if(cup==1||cup==2){ // For the moment, remove defusion if Coupling is
+ // set.
+ resp->SetTemperature(0.0);
+ resp->SetDistanceOverVoltage(0.0);
+ } // end if
+ Init();
+}
+//______________________________________________________________________
+void AliITSsimulationSPDdubna::Init(){
+ // Initilization
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+ const Double_t kmictocm = 1.0e-4; // convert microns to cm.
+
+ SetModuleNumber(0);
+ SetEventNumber(0);
+ SetMap(new AliITSpList(GetNPixelsZ(),GetNPixelsX()));
+ GetResp(0,0)->SetDistanceOverVoltage(kmictocm*GetSeg()->Dy(),50.0);
}
//______________________________________________________________________
AliITSsimulationSPDdubna::~AliITSsimulationSPDdubna(){
// destructor
-
- delete fMapA2;
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
if (fHis) {
- fHis->Delete();
- delete fHis;
+ fHis->Delete();
+ delete fHis;
} // end if fHis
}
//______________________________________________________________________
AliITSsimulationSPDdubna::AliITSsimulationSPDdubna(const
AliITSsimulationSPDdubna
- &source){
- // Copy Constructor
- if(&source == this) return;
- this->fMapA2 = source.fMapA2;
- this->fNoise = source.fNoise;
- this->fBaseline = source.fBaseline;
- this->fNPixelsX = source.fNPixelsX;
- this->fNPixelsZ = source.fNPixelsZ;
- this->fHis = source.fHis;
+ &s) : AliITSsimulation(s){
+ // Copy Constructor
+ // Inputs:
+ // AliITSsimulationSPDdubna &s The original class for which
+ // this class is a copy of
+ // Outputs:
+ // none.
+ // Return:
+
+ *this = s;
return;
}
//______________________________________________________________________
AliITSsimulationSPDdubna& AliITSsimulationSPDdubna::operator=(const
- AliITSsimulationSPDdubna &source){
+ AliITSsimulationSPDdubna &s){
// Assignment operator
- if(&source == this) return *this;
- this->fMapA2 = source.fMapA2;
- this->fNoise = source.fNoise;
- this->fBaseline = source.fBaseline;
- this->fNPixelsX = source.fNPixelsX;
- this->fNPixelsZ = source.fNPixelsZ;
- this->fHis = source.fHis;
+ // Inputs:
+ // AliITSsimulationSPDdubna &s The original class for which
+ // this class is a copy of
+ // Outputs:
+ // none.
+ // Return:
+
+ if(&s == this) return *this;
+ this->fHis = s.fHis;
+ fCoupling = s.fCoupling;
+ fSPDname = s.fSPDname;
return *this;
}
//______________________________________________________________________
void AliITSsimulationSPDdubna::InitSimulationModule(Int_t module, Int_t event){
// This function creates maps to build the list of tracks for each
- // summable digit.
- //
+ // summable digit. Inputs defined by base class.
// Inputs:
// Int_t module // Module number to be simulated
// Int_t event // Event number to be simulated
- //
// Outputs:
// none
- //
// Returns:
// none
- fModule = module;
- fEvent = event;
- fMapA2->ClearMap();
- fpList->ClearMap();
+ if(GetDebug(1)) Info("InitSimulationModule","(module=%d,event=%d)",
+ module,event);
+ SetModuleNumber(module);
+ SetEventNumber(event);
+ ClearMap();
}
//_____________________________________________________________________
-void AliITSsimulationSPDdubna::SDigitiseModule(AliITSmodule *mod, Int_t mask,
- Int_t event){
- // This function begins the work of creating S-Digits
- //
+void AliITSsimulationSPDdubna::SDigitiseModule(AliITSmodule *mod,Int_t,
+ Int_t event){
+ // This function begins the work of creating S-Digits. Inputs defined
+ // by base class.
// Inputs:
// AliITSmodule *mod // module
- // Int_t mask // mask to be applied to the module
- //
+ // Int_t // not used
+ // Int_t event // Event number
// Outputs:
// none
- //
// Return:
// test // test returns kTRUE if the module contained hits
// // test returns kFALSE if it did not contain hits
- Int_t module = 0;
-
- if(!(mod->GetNhits())) return;// if module has no hits don't create Sdigits
- fModule = mod->GetIndex();
- HitToSDigit(mod, module, mask, fpList);
- WriteSDigits(fpList);
- fMapA2->ClearMap();
- fpList->ClearMap();
+ if(GetDebug(1)) Info("SDigitiseModule","(mod=%p, ,event=%d)",mod,event);
+ if(!(mod->GetNhits())){
+ if(GetDebug(1)) Info("SDigitiseModule","In event %d module %d there "
+ "are %d hits returning.",event,
+ mod->GetIndex(),mod->GetNhits());
+ return;// if module has no hits don't create Sdigits
+ } // end if
+ SetModuleNumber(mod->GetIndex());
+ SetEventNumber(event);
+ HitToSDigit(mod);
+ WriteSDigits();
+ ClearMap();
}
//______________________________________________________________________
-void AliITSsimulationSPDdubna::WriteSDigits(AliITSpList *pList){
+void AliITSsimulationSPDdubna::WriteSDigits(){
// This function adds each S-Digit to pList
- //
// Inputs:
- // AliITSpList *pList
- //
+ // none.
// Outputs:
- // none
- //
+ // none.
// Return:
// none
Int_t ix, nix, iz, niz;
static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
- pList->GetMaxMapIndex(niz, nix);
+ if(GetDebug(1))Info("WriteSDigits","Writing SDigits for module %d",
+ GetModuleNumber());
+ GetMap()->GetMaxMapIndex(niz, nix);
for(iz=0; iz<niz; iz++)for(ix=0; ix<nix; ix++){
- if(pList->GetSignalOnly(iz,ix)>0.0){
- aliITS->AddSumDigit(*(pList->GetpListItem(iz,ix)));
- } // end if pList
+ if(GetMap()->GetSignalOnly(iz,ix)>0.0){
+ aliITS->AddSumDigit(*(GetMap()->GetpListItem(iz,ix)));
+ if(GetDebug(1)){
+ cout <<"AliITSsimulationSPDdubna:WriteSDigits " << iz << ","
+ << ix << "," << *(GetMap()->GetpListItem(iz,ix)) << endl;
+ } // end if GetDebug
+ } // end if GetMap()->GetSignalOnly(iz,ix)>0.0
} // end for iz,ix
return;
}
//______________________________________________________________________
void AliITSsimulationSPDdubna::FinishSDigitiseModule(){
// This function calls SDigitsToDigits which creates Digits from SDigits
- //
// Inputs:
// none
- //
// Outputs:
// none
// Return
// none
- SDigitsToDigits(fModule, fpList);
+ if(GetDebug(1)) Info("SDigitiseModule","()");
+ pListToDigits(); // Charge To Signal both adds noise and
+ ClearMap();
return;
}
//______________________________________________________________________
-void AliITSsimulationSPDdubna::SDigitsToDigits(Int_t module,
- AliITSpList *pList){
- // This function adds electronic noise to the S-Digits and then adds them
- // to a new pList
- //
- // Inputs:
- // Int_t module // module number
- // AliITSpList *pList // pList
- //
- // Outputs:
- // pList is passed along to the functions ChargeToSignal and GetList
- //
- // Return:
- // none
-
- fModule = module;
- ChargeToSignal(pList); // Charge To Signal both adds noise and
- fMapA2->ClearMap();
- pList->ClearMap();
-}
-//______________________________________________________________________
-void AliITSsimulationSPDdubna::DigitiseModule(AliITSmodule *mod, Int_t module,
- Int_t dummy){
+void AliITSsimulationSPDdubna::DigitiseModule(AliITSmodule *mod,Int_t,
+ Int_t){
// This function creates Digits straight from the hits and then adds
// electronic noise to the digits before adding them to pList
- //
+ // Each of the input variables is passed along to HitToSDigit
// Inputs:
- // AliITSmodule *mod // module
- // Int_t module // module number Dummy.
- // Int_t dummy
- //
+ // AliITSmodule *mod module
+ // Int_t Dummy.
+ // Int_t Dummy
// Outputs:
- // Each of the input variables is passed along to HitToSDigit
- //
+ // none.
// Return:
- // none
+ // none.
- fModule = mod->GetIndex(); //This calls the module for HitToSDigit
- HitToSDigit(mod,fModule, dummy, fpList);
- ChargeToSignal(fpList);
- fMapA2->ClearMap();
- fpList->ClearMap();
+ if(GetDebug(1)) Info("DigitiseModule","(mod=%p,,)",mod);
+ HitToSDigit(mod);
+ pListToDigits();
+ ClearMap();
}
//______________________________________________________________________
-void AliITSsimulationSPDdubna::UpdateMapSignal(Int_t iz, Int_t ix, Int_t trk,
- Int_t ht, Int_t module,
- Double_t signal,
- AliITSpList *pList){
- // This function adds a signal to the pList from the pList class
- //
- // Inputs:
- // Int_t iz // row number
- // Int_t ix // column number
- // Int_t trk // track number
- // Int_t ht // hit number
- // Double_t signal // signal strength
- // AliITSpList *pList // pList
- //
- // Outputs:
- // All of the inputs are passed to AliITSpList::AddSignal
- // Int_t ix // row number
- // Int_t iz // column number
- // Double_t sig // signal strength
- // // These three variables are defined to preserve the
- // // assignments used in the function AliITSMapA2::AddSignal
- //
- // Return:
- // none
-
- fMapA2->AddSignal(iz, ix, signal);
- pList->AddSignal(iz,ix, trk, ht, fModule, signal);
-}
-//______________________________________________________________________
-void AliITSsimulationSPDdubna::UpdateMapNoise(Int_t iz,
- Int_t ix, Int_t fModule,
- Double_t sig, Float_t noise,
- AliITSpList *pList){
- // This function adds noise to data in the MapA2 as well as the pList
- //
- // Inputs:
- // Int_t iz // row number
- // Int_t ix // column number
- // Int_t mod // module number
- // Double_t sig // signal strength
- // Double_t noise // electronic noise generated by ChargeToSignal
- // AliITSpList *pList // pList
- //
- // Outputs:
- // All of the inputs are passed to AliITSMapA2::AddSignal or
- // AliITSpList::AddNoise
- //
- // Return:
- // none
-
- fMapA2->AddSignal(iz, ix, sig);
- pList->AddNoise(iz,ix, fModule, noise);
+void AliITSsimulationSPDdubna::HitToSDigit(AliITSmodule *mod){
+ // Does the charge distributions using Gaussian diffusion charge charing.
+ // Inputs:
+ // AliITSmodule *mod Pointer to this module
+ // Output:
+ // none.
+ // Return:
+ // none.
+ const Double_t kmictocm = 1.0e-4; // convert microns to cm.
+ TObjArray *hits = mod->GetHits();
+ Int_t nhits = hits->GetEntriesFast();
+ Int_t h,ix,iz,i;
+ Int_t idtrack;
+ Double_t x0=0.0,x1=0.0,y0=0.0,y1=0.0,z0=0.0,z1=0.0,de=0.0;
+ Double_t x,y,z,t,tp,st,dt=0.2,el,sig;
+ Double_t thick = kmictocm*GetSeg()->Dy();
+
+ if(GetDebug(1)) Info("HitsToSDigits","(mod=%p) fCoupling=%d",
+ mod,fCoupling);
+ if(nhits<=0) return;
+ for(h=0;h<nhits;h++){
+ if(GetDebug(1)){
+ cout << "Hits=" << h << "," << *(mod->GetHit(h)) << endl;
+ } // end if GetDebug
+ if(!mod->LineSegmentL(h,x0,x1,y0,y1,z0,z1,de,idtrack)) continue;
+ st = TMath::Sqrt(x1*x1+y1*y1+z1*z1);
+ if(st>0.0){
+ st = (Double_t)((Int_t)(st/kmictocm)); // number of microns
+ if(st<=1.0) st = 1.0;
+ dt = 1.0/st;
+ for(t=0.0;t<1.0;t+=dt){ // Integrate over t
+ tp = t+0.5*dt;
+ x = x0+x1*tp;
+ y = y0+y1*tp;
+ z = z0+z1*tp;
+ if(!(GetSeg()->LocalToDet(x,z,ix,iz))) continue; // outside
+ el = GetResp(ix,iz)->GeVToCharge((Double_t)(dt*de));
+ if(GetDebug(1)){
+ if(el<=0.0) cout<<"el="<<el<<" dt="<<dt
+ <<" de="<<de<<endl;
+ } // end if GetDebug
+ sig = GetResp(ix,iz)->SigmaDiffusion1D(thick + y);
+ SpreadCharge(x,z,ix,iz,el,sig,idtrack,h);
+ } // end for t
+ } else { // st == 0.0 deposit it at this point
+ x = x0;
+ y = y0;
+ z = z0;
+ if(!(GetSeg()->LocalToDet(x,z,ix,iz))) continue; // outside
+ el = GetResp(ix,iz)->GeVToCharge((Double_t)de);
+ sig = GetResp(ix,iz)->SigmaDiffusion1D(thick + y);
+ SpreadCharge(x,z,ix,iz,el,sig,idtrack,h);
+ } // end if st>0.0
+ // Coupling
+ switch (fCoupling) {
+ default:
+ break;
+ case 1: case 3:
+ // x is column and z is row (see AliITSsegmentationSPD::GetPadIxz)
+ for(i=0;i<GetMap()->GetEntries();i++)
+ if(GetMap()->GetpListItem(i)==0) continue;
+ else{
+ GetMap()->GetMapIndex(
+ GetMap()->GetpListItem(i)->GetIndex(),iz,ix);
+ SetCoupling(iz,ix,idtrack,h);
+ } // end for i
+ break;
+ case 2: case 4:
+ // x is column and z is row (see AliITSsegmentationSPD::GetPadIxz)
+ for(i=0;i<GetMap()->GetEntries();i++)
+ if(GetMap()->GetpListItem(i)==0) continue;
+ else{
+ GetMap()->GetMapIndex(
+ GetMap()->GetpListItem(i)->GetIndex(),iz,ix);
+ SetCouplingOld(iz,ix,idtrack,h);
+ } // end for i
+ break;
+ } // end switch
+ } // Loop over all hits h
+ if(GetDebug(2))Info("HitToSDigit","Finished fCoupling=%d",fCoupling);
}
//______________________________________________________________________
-void AliITSsimulationSPDdubna::HitToDigit(AliITSmodule *mod, Int_t module,
- Int_t dummy){
- DigitiseModule(mod, module, dummy);
+void AliITSsimulationSPDdubna::SpreadCharge(Double_t x0,Double_t z0,
+ Int_t ix0,Int_t iz0,
+ Double_t el,Double_t sig,Int_t t,
+ Int_t hi){
+ // Spreads the charge over neighboring cells. Assume charge is distributed
+ // as charge(x,z) = (el/2*pi*sig*sig)*exp(-arg)
+ // arg=((x-x0)*(x-x0)/2*sig*sig)+((z-z0*z-z0)/2*sig*sig)
+ // Defined this way, the integral over all x and z is el.
+ // Inputs:
+ // Double_t x0 x position of point where charge is liberated
+ // Double_t y0 y position of point where charge is liberated
+ // Double_t z0 z position of point where charge is liberated
+ // Int_t ix0 row of cell corresponding to point x0
+ // Int_t iz0 columb of cell corresponding to point z0
+ // Double_t el number of electrons liberated in this step
+ // Double_t sig Sigma difusion for this step (y0 dependent)
+ // Int_t t track number
+ // Int_t ti hit track index number
+ // Int_t hi hit "hit" index number
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+ const Int_t knx = 3,knz = 2;
+ const Double_t kRoot2 = 1.414213562; // Sqrt(2).
+ const Double_t kmictocm = 1.0e-4; // convert microns to cm.
+ Int_t ix,iz,ixs,ixe,izs,ize;
+ Float_t x,z;
+ Double_t x1,x2,z1,z2,s,sp;
+
+ if(GetDebug(4)) Info("SpreadCharge","(x0=%e,z0=%e,ix0=%d,iz0=%d,el=%e,"
+ "sig=%e,t=%d,i=%d)",x0,z0,ix0,iz0,el,sig,t,hi);
+ if(sig<=0.0) { // if sig<=0 No diffusion to simulate.
+ GetMap()->AddSignal(iz0,ix0,t,hi,GetModuleNumber(),el);
+ if(GetDebug(2)){
+ cout << "sig<=0.0=" << sig << endl;
+ } // end if GetDebug
+ return;
+ } // end if
+ sp = 1.0/(sig*kRoot2);
+ if(GetDebug(2)){
+ cout << "sig=" << sig << " sp=" << sp << endl;
+ } // end if GetDebug
+ ixs = TMath::Max(-knx+ix0,0);
+ ixe = TMath::Min(knx+ix0,GetSeg()->Npx()-1);
+ izs = TMath::Max(-knz+iz0,0);
+ ize = TMath::Min(knz+iz0,GetSeg()->Npz()-1);
+ for(ix=ixs;ix<=ixe;ix++) for(iz=izs;iz<=ize;iz++){
+ GetSeg()->DetToLocal(ix,iz,x,z); // pixel center
+ x1 = x;
+ z1 = z;
+ x2 = x1 + 0.5*kmictocm*GetSeg()->Dpx(ix); // Upper
+ x1 -= 0.5*kmictocm*GetSeg()->Dpx(ix); // Lower
+ z2 = z1 + 0.5*kmictocm*GetSeg()->Dpz(iz); // Upper
+ z1 -= 0.5*kmictocm*GetSeg()->Dpz(iz); // Lower
+ x1 -= x0; // Distance from where track traveled
+ x2 -= x0; // Distance from where track traveled
+ z1 -= z0; // Distance from where track traveled
+ z2 -= z0; // Distance from where track traveled
+ s = 0.25; // Correction based on definision of Erfc
+ s *= TMath::Erfc(sp*x1) - TMath::Erfc(sp*x2);
+ if(GetDebug(3)){
+ cout <<"el="<<el<<" ix0="<<ix0<<" ix="<<ix<<" x0="<<x<<
+ " iz0="<<iz0<<" iz="<<iz<<" z0="<<z<<
+ " sp*x1="<<sp*x1<<" sp*x2="<<sp*x2<<" s="<<s;
+ } // end if GetDebug
+ s *= TMath::Erfc(sp*z1) - TMath::Erfc(sp*z2);
+ if(GetDebug(3)){
+ cout<<" sp*z1="<<sp*z1<<" sp*z2="<<sp*z2<<" s="<<s<< endl;
+ } // end if GetDebug
+ GetMap()->AddSignal(iz,ix,t,hi,GetModuleNumber(),s*el);
+ } // end for ix, iz
}
//______________________________________________________________________
-void AliITSsimulationSPDdubna::HitToSDigit(AliITSmodule *mod, Int_t module,
- Int_t dummy, AliITSpList *pList){
- // digitize module
- const Float_t kEnToEl = 2.778e+8; // GeV->charge in electrons
- // for 3.6 eV/pair
- const Float_t kconv = 10000.; // cm -> microns
-
- Float_t spdLength = fSegmentation->Dz();
- Float_t spdWidth = fSegmentation->Dx();
- Float_t spdThickness = fSegmentation->Dy();
- Float_t difCoef, dum;
- fResponse->DiffCoeff(difCoef,dum);
- if(spdThickness > 290) difCoef = 0.00613;
-
- Float_t zPix0 = 1e+6;
- Float_t xPix0 = 1e+6;
- Float_t yPrev = 1e+6;
-
- Float_t zPitch = fSegmentation->Dpz(0);
- Float_t xPitch = fSegmentation->Dpx(0);
-
- TObjArray *fHits = mod->GetHits();
- module = mod->GetIndex();
- Int_t nhits = fHits->GetEntriesFast();
- if (!nhits) return;
-
- cout<<"len,wid,thickness,nx,nz,pitchx,pitchz,difcoef ="<<spdLength<<","
- <<spdWidth<<","<<spdThickness<<","<<fNPixelsX<<","<<fNPixelsZ<<","
- <<xPitch<<","<<zPitch<<","<<difCoef<<endl;
- // Array of pointers to the label-signal list
- Int_t indexRange[4] = {0,0,0,0};
-
- // Fill detector maps with GEANT hits
- // loop over hits in the module
- static Bool_t first;
- Int_t lasttrack=-2;
- Int_t hit, iZi, jz, jx;
- Int_t idhit=-1; //!
- cout<<"SPDdubna: module,nhits ="<<module<<","<<nhits<<endl;
- for (hit=0;hit<nhits;hit++) {
- AliITShit *iHit = (AliITShit*) fHits->At(hit);
- //Int_t layer = iHit->GetLayer();
- Float_t yPix0 = -spdThickness/2;
-
- // work with the idtrack=entry number in the TreeH
- //Int_t idhit,idtrack; //!
- //mod->GetHitTrackAndHitIndex(hit,idtrack,idhit); //!
- //Int_t idtrack=mod->GetHitTrackIndex(hit);
- // or store straight away the particle position in the array
- // of particles :
- if(iHit->StatusEntering()) idhit=hit;
- Int_t itrack = iHit->GetTrack();
- Int_t dray = 0;
-
- if (lasttrack != itrack || hit==(nhits-1)) first = kTRUE;
-
- //Int_t parent = iHit->GetParticle()->GetFirstMother();
- Int_t partcode = iHit->GetParticle()->GetPdgCode();
-
- // partcode (pdgCode): 11 - e-, 13 - mu-, 22 - gamma, 111 - pi0,
- // 211 - pi+, 310 - K0s, 321 - K+, 2112 - n, 2212 - p, 3122 - lambda
-
- Float_t pmod = iHit->GetParticle()->P(); // total momentum at the
- // vertex
- pmod *= 1000;
-
- if(partcode == 11 && pmod < 6) dray = 1; // delta ray is e-
- // at p < 6 MeV/c
-
- // Get hit z and x(r*phi) cordinates for each module (detector)
- // in local system.
-
- Float_t zPix = kconv*iHit->GetZL();
- Float_t xPix = kconv*iHit->GetXL();
- Float_t yPix = kconv*iHit->GetYL();
-
- // Get track status
- Int_t status = iHit->GetTrackStatus();
-
- // Check boundaries
- if(zPix > spdLength/2) {
- //cout<<"!!! SPD: z outside ="<<zPix<<endl;
- zPix = spdLength/2 - 10;
- }
- if(zPix < 0 && zPix < -spdLength/2) {
- //cout<<"!!! SPD: z outside ="<<zPix<<endl;
- zPix = -spdLength/2 + 10;
- }
- if(xPix > spdWidth/2) {
- //cout<<"!!! SPD: x outside ="<<xPix<<endl;
- xPix = spdWidth/2 - 10;
- }
- if(xPix < 0 && xPix < -spdWidth/2) {
- //cout<<"!!! SPD: x outside ="<<xPix<<endl;
- xPix = -spdWidth/2 + 10;
- }
- Int_t trdown = 0;
-
- // enter Si or after event in Si
- if (status == 66 ) {
- zPix0 = zPix;
- xPix0 = xPix;
- yPrev = yPix;
- } // end if status == 66
-
- Float_t depEnergy = iHit->GetIonization();
- // skip if the input point to Si
-
- if(depEnergy <= 0.) continue;
-
- // if track returns to the opposite direction:
- if (yPix < yPrev) {
- trdown = 1;
- } // end if yPix < yPrev
-
- // take into account the holes diffusion inside the Silicon
- // the straight line between the entrance and exit points in Si is
- // divided into the several steps; the diffusion is considered
- // for each end point of step and charge
- // is distributed between the pixels through the diffusion.
-
- // ---------- the diffusion in Z (beam) direction -------
- Float_t charge = depEnergy*kEnToEl; // charge in e-
- Float_t drPath = 0.;
- Float_t tang = 0.;
- Float_t sigmaDif = 0.;
- Float_t zdif = zPix - zPix0;
- Float_t xdif = xPix - xPix0;
- Float_t ydif = TMath::Abs(yPix - yPrev);
- Float_t ydif0 = TMath::Abs(yPrev - yPix0);
-
- if(ydif < 1) continue; // ydif is not zero
-
- Float_t projDif = sqrt(xdif*xdif + zdif*zdif);
-
- Int_t ndZ = (Int_t)TMath::Abs(zdif/zPitch) + 1;
- Int_t ndX = (Int_t)TMath::Abs(xdif/xPitch) + 1;
-
- // number of the steps along the track:
- Int_t nsteps = ndZ;
- if(ndX > ndZ) nsteps = ndX;
- if(nsteps < 20) nsteps = 20; // minimum number of the steps
-
- if (projDif < 5 ) {
- drPath = (yPix-yPix0)*1.e-4;
- drPath = TMath::Abs(drPath); // drift path in cm
- sigmaDif = difCoef*sqrt(drPath); // sigma diffusion in cm
- sigmaDif = sigmaDif*kconv; // sigma diffusion in microns
- nsteps = 1;
- } // end if projDif < 5
-
- if(projDif > 5) tang = ydif/projDif;
- Float_t dCharge = charge/nsteps; // charge in e- for one step
- Float_t dZ = zdif/nsteps;
- Float_t dX = xdif/nsteps;
-
- for (iZi = 1; iZi <= nsteps;iZi++) {
- Float_t dZn = iZi*dZ;
- Float_t dXn = iZi*dX;
- Float_t zPixn = zPix0 + dZn;
- Float_t xPixn = xPix0 + dXn;
-
- if(projDif >= 5) {
- Float_t dProjn = sqrt(dZn*dZn+dXn*dXn);
- drPath = dProjn*tang*1.e-4; // drift path for iZi+1 step in cm
- if(trdown == 0) {
- drPath = TMath::Abs(drPath) + ydif0*1.e-4;
- }// end if trdow ==0
- if(trdown == 1) {
- drPath = ydif0*1.e-4 - TMath::Abs(drPath);
- drPath = TMath::Abs(drPath);
- } // end if trdown == 1
- sigmaDif = difCoef*sqrt(drPath);
- sigmaDif = sigmaDif*kconv; // sigma diffusion in microns
- } // end if projdif >= 5
-
- zPixn = (zPixn + spdLength/2.);
- xPixn = (xPixn + spdWidth/2.);
- Int_t nZpix, nXpix;
- fSegmentation->GetPadIxz(xPixn,zPixn,nXpix,nZpix);
- zPitch = fSegmentation->Dpz(nZpix);
- fSegmentation->GetPadTxz(xPixn,zPixn);
- // set the window for the integration
- Int_t jzmin = 1;
- Int_t jzmax = 3;
- if(nZpix == 1) jzmin =2;
- if(nZpix == fNPixelsZ) jzmax = 2;
-
- Int_t jxmin = 1;
- Int_t jxmax = 3;
- if(nXpix == 1) jxmin =2;
- if(nXpix == fNPixelsX) jxmax = 2;
-
- Float_t zpix = nZpix;
- Float_t dZright = zPitch*(zpix - zPixn);
- Float_t dZleft = zPitch - dZright;
-
- Float_t xpix = nXpix;
- Float_t dXright = xPitch*(xpix - xPixn);
- Float_t dXleft = xPitch - dXright;
-
- Float_t dZprev = 0.;
- Float_t dZnext = 0.;
- Float_t dXprev = 0.;
- Float_t dXnext = 0.;
-
- for(jz=jzmin; jz <=jzmax; jz++) {
- if(jz == 1) {
- dZprev = -zPitch - dZleft;
- dZnext = -dZleft;
- } else if(jz == 2) {
- dZprev = -dZleft;
- dZnext = dZright;
- } else if(jz == 3) {
- dZprev = dZright;
- dZnext = dZright + zPitch;
- } // end if jz
- // kz changes from 1 to the fNofPixels(270)
- Int_t kz = nZpix + jz -2;
-
- Float_t zArg1 = dZprev/sigmaDif;
- Float_t zArg2 = dZnext/sigmaDif;
- Float_t zProb1 = TMath::Erfc(zArg1);
- Float_t zProb2 = TMath::Erfc(zArg2);
- Float_t dZCharge =0.5*(zProb1-zProb2)*dCharge;
-
-
- // ----------- holes diffusion in X(r*phi) direction --------
-
- if(dZCharge > 1.) {
- for(jx=jxmin; jx <=jxmax; jx++) {
- if(jx == 1) {
- dXprev = -xPitch - dXleft;
- dXnext = -dXleft;
- } else if(jx == 2) {
- dXprev = -dXleft;
- dXnext = dXright;
- } else if(jx == 3) {
- dXprev = dXright;
- dXnext = dXright + xPitch;
- } // end if jx
- Int_t kx = nXpix + jx -2;
- Float_t xArg1 = dXprev/sigmaDif;
- Float_t xArg2 = dXnext/sigmaDif;
- Float_t xProb1 = TMath::Erfc(xArg1);
- Float_t xProb2 = TMath::Erfc(xArg2);
- Float_t dXCharge =0.5*(xProb1-xProb2)*dZCharge;
-
- if(dXCharge > 1.) {
- Int_t index = kz-1;
- if (first) {
- indexRange[0]=indexRange[1]=index;
- indexRange[2]=indexRange[3]=kx-1;
- first=kFALSE;
- } // end if first
- indexRange[0]=TMath::Min(indexRange[0],kz-1);
- indexRange[1]=TMath::Max(indexRange[1],kz-1);
- indexRange[2]=TMath::Min(indexRange[2],kx-1);
- indexRange[3]=TMath::Max(indexRange[3],kx-1);
-
- // build the list of digits for this module
- Double_t signal=fMapA2->GetSignal(index,kx-1);
- signal+=dXCharge;
- fMapA2->SetHit(index,kx-1,(double)signal);
-
- // The calling sequence for UpdateMapSignal was
- // moved into the (dx > 1 e-) loop because it
- // needs to call signal which is defined inside
- // this loop
- fModule = module;//Defined because functions
- // called by UpdateMapSignal
- // expect module to be an
- // integer
- UpdateMapSignal(kz-1,kx-1,
- mod->GetHitTrackIndex(hit),
- hit,fModule,signal,pList);
- } // dXCharge > 1 e-
- } // jx loop
- } // dZCharge > 1 e-
- } // jz loop
- } // iZi loop
- if (status == 65) { // the step is inside of Si
- zPix0 = zPix;
- xPix0 = xPix;
- } // end if status == 65
- yPrev = yPix;
- } // hit loop inside the module
-}
-//______________________________________________________________________
-void AliITSsimulationSPDdubna::ChargeToSignal(AliITSpList *pList){
+void AliITSsimulationSPDdubna::pListToDigits(){
// add noise and electronics, perform the zero suppression and add the
// digit to the list
-
- AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
-
- Float_t threshold = (float)fResponse->MinVal();
-
- Int_t digits[3], tracks[3], hits[3], gi, j1;
- Float_t charges[3];
- Float_t electronics;
- Float_t signal;
- Float_t phys;
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+ static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
+ Int_t j,ix,iz;
+ Double_t electronics;
Double_t sig;
-// Int_t module = 0;
- for(Int_t iz=0; iz<fNPixelsZ; iz++){
- for(Int_t ix=0; ix<fNPixelsX; ix++){
- electronics = fBaseline + fNoise*gRandom->Gaus();
- signal = (float)pList->GetSignalOnly(iz,ix);
- sig = Double_t (signal); // sig will be passed along to
- // UpdateMapNoise this is necessary so
- // that a signal without electronic
- // noise is passed along
- signal += electronics;
- gi =iz*fNPixelsX+ix; // global index
- if (signal > threshold) {
- digits[0]=iz;
- digits[1]=ix;
- digits[2]=1;
- for(j1=0;j1<3;j1++){
- if (pList->GetTrack(iz,ix,gi)) {
- //b.b. tracks[j1]=-3;
- tracks[j1] = (Int_t)(pList->GetTrack(iz,ix,j1)+j1);
- hits[j1] = (Int_t)(pList->GetHit(iz,ix,j1)+j1+6);
- }else {
- tracks[j1]=-2; //noise
- hits[j1] = -1;
- } // end if pList
- charges[j1] = 0;
- } // end for j1
-
- if(tracks[0] == tracks[1] && tracks[0] == tracks[2]) {
- tracks[1] = -3;
- hits[1] = -1;
- tracks[2] = -3;
- hits[2] = -1;
- } else if(tracks[0] == tracks[1] && tracks[0] != tracks[2]) {
- tracks[1] = -3;
- hits[1] = -1;
- } else if(tracks[0] == tracks[2] && tracks[0] != tracks[1]) {
- tracks[2] = -3;
- hits[2] = -1;
- } else if(tracks[1] == tracks[2] && tracks[0] != tracks[1]) {
- tracks[2] = -3;
- hits[2] = -1;
- } // end if
-
- phys = 0;
-
- UpdateMapNoise(iz,ix,fModule,sig,electronics,pList);
- aliITS->AddSimDigit(0, phys, digits, tracks, hits, charges);
- } //
- } //
- } //
+ const Int_t nmaxtrk=AliITSdigitSPD::GetNTracks();
+ static AliITSdigitSPD dig;
+
+ if(GetDebug(1)) Info("pListToDigits","()");
+ for(iz=0; iz<GetNPixelsZ(); iz++) for(ix=0; ix<GetNPixelsX(); ix++){
+ // Apply Noise/Dead channals and the like
+ if(GetResp(ix,iz)->IsPixelDead(GetModuleNumber(),ix,iz)) continue;
+ electronics = GetResp(ix,iz)->ApplyBaselineAndNoise();
+ UpdateMapNoise(ix,iz,electronics);
+ //
+ // Apply Threshold and write Digits.
+ sig = GetMap()->GetSignalOnly(iz,ix);
+ FillHistograms(ix,iz,sig+electronics);
+ if(GetDebug(3)){
+ cout<<sig<<"+"<<electronics<<">threshold("<<ix<<","<<iz
+ <<")="<<GetThreshold(ix,iz) <<endl;
+ } // end if GetDebug
+ if (sig+electronics <= GetThreshold(ix,iz)) continue;
+ dig.SetCoord1(iz);
+ dig.SetCoord2(ix);
+ dig.SetSignal(1);
+ dig.SetSignalSPD((Int_t) GetMap()->GetSignal(iz,ix));
+ for(j=0;j<nmaxtrk;j++){
+ if (j<GetMap()->GetNEnteries()) {
+ dig.SetTrack(j,GetMap()->GetTrack(iz,ix,j));
+ dig.SetHit(j,GetMap()->GetHit(iz,ix,j));
+ }else { // Default values
+ dig.SetTrack(j,-3);
+ dig.SetHit(j,-1);
+ } // end if GetMap()
+ } // end for j
+ if(GetDebug(3)){
+ cout<<iz<<","<<ix<<","<<*(GetMap()->GetpListItem(iz,ix))<<endl;
+ } // end if GetDebug
+ aliITS->AddSimDigit(0,&dig);
+ } // for ix/iz
}
//______________________________________________________________________
void AliITSsimulationSPDdubna::CreateHistograms(){
// create 1D histograms for tests
-
- printf("SPD - create histograms\n");
-
- fHis=new TObjArray(fNPixelsZ);
- TString spdName("spd_");
- for (Int_t i=0;i<fNPixelsZ;i++) {
- Char_t pixelz[4];
- sprintf(pixelz,"%d",i+1);
- spdName.Append(pixelz);
- //PH (*fHis)[i] = new TH1F(spdName.Data(),"SPD maps",
- //PH fNPixelsX,0.,(Float_t) fNPixelsX);
- fHis->AddAt(new TH1F(spdName.Data(),"SPD maps",
- fNPixelsX,0.,(Float_t) fNPixelsX), i);
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+
+ if(GetDebug(1)) Info("CreateHistograms","create histograms");
+
+ fHis = new TObjArray(GetNPixelsZ());
+ TString fSPDname("spd_");
+ for(Int_t i=0;i<GetNPixelsZ();i++) {
+ Char_t pixelz[4];
+ sprintf(pixelz,"%d",i);
+ fSPDname.Append(pixelz);
+ fHis->AddAt(new TH1F(fSPDname.Data(),"SPD maps",
+ GetNPixelsX(),0.,(Double_t)GetNPixelsX()),i);
} // end for i
}
//______________________________________________________________________
+void AliITSsimulationSPDdubna::FillHistograms(Int_t ix,Int_t iz,Double_t v){
+ // Fill the histogram
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+
+ if(!GetHistArray()) return; // Only fill if setup.
+ if(GetDebug(2)) Info("FillHistograms","fill histograms");
+ GetHistogram(iz)->Fill(ix,v);
+}
+//______________________________________________________________________
void AliITSsimulationSPDdubna::ResetHistograms(){
- //
// Reset histograms for this detector
- //
-
- for ( int i=0;i<fNPixelsZ;i++ ) {
- //PH if ((*fHis)[i]) ((TH1F*)(*fHis)[i])->Reset();
- if (fHis->At(i)) ((TH1F*)fHis->At(i))->Reset();
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+
+ if(!GetHistArray()) return; // Only fill if setup.
+ if(GetDebug(2)) Info("FillHistograms","fill histograms");
+ for ( int i=0;i<GetNPixelsZ();i++ ) {
+ if (fHis->At(i)) ((TH1F*)fHis->At(i))->Reset();
} // end for i
}
+
+//______________________________________________________________________
+void AliITSsimulationSPDdubna::SetCoupling(Int_t row, Int_t col, Int_t ntrack,
+ Int_t idhit) {
+ // Take into account the coupling between adiacent pixels.
+ // The parameters probcol and probrow are the probability of the
+ // signal in one pixel shared in the two adjacent pixels along
+ // the column and row direction, respectively.
+ // Note pList is goten via GetMap() and module is not need any more.
+ // Otherwise it is identical to that coded by Tiziano Virgili (BSN).
+ //Begin_Html
+ /*
+ <img src="picts/ITS/barimodel_3.gif">
+ </pre>
+ <br clear=left>
+ <font size=+2 color=red>
+ <a href="mailto:tiziano.virgili@cern.ch"></a>.
+ </font>
+ <pre>
+ */
+ //End_Html
+ // Inputs:
+ // Int_t row z cell index
+ // Int_t col x cell index
+ // Int_t ntrack track incex number
+ // Int_t idhit hit index number
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+ Int_t j1,j2,flag=0;
+ Double_t pulse1,pulse2;
+ Double_t couplR=0.0,couplC=0.0;
+ Double_t xr=0.;
+
+ GetCouplings(couplR,couplC);
+ if(GetDebug(3)) Info("SetCoupling","(row=%d,col=%d,ntrack=%d,idhit=%d) "
+ "Calling SetCoupling couplR=%e couplC=%e",
+ row,col,ntrack,idhit,couplR,couplC);
+ j1 = row;
+ j2 = col;
+ pulse1 = GetMap()->GetSignalOnly(row,col);
+ pulse2 = pulse1;
+ for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction
+ do{
+ j1 += isign;
+ // pulse1 *= couplR;
+ xr = gRandom->Rndm();
+ //if ((j1<0)||(j1>GetNPixelsZ()-1)||(pulse1<GetThreshold(j1,col))){
+ if ((j1<0) || (j1>GetNPixelsZ()-1) || (xr>couplR)){
+ j1 = row;
+ flag = 1;
+ }else{
+ UpdateMapSignal(col,j1,ntrack,idhit,pulse1);
+ // flag = 0;
+ flag = 1; // only first next!!
+ } // end if
+ } while(flag == 0);
+ // loop in column direction
+ do{
+ j2 += isign;
+ // pulse2 *= couplC;
+ xr = gRandom->Rndm();
+ //if((j2<0)||j2>(GetNPixelsX()-1)||pulse2<GetThreshold(row,j2)){
+ if ((j2<0) || (j2>GetNPixelsX()-1) || (xr>couplC)){
+ j2 = col;
+ flag = 1;
+ }else{
+ UpdateMapSignal(j2,row,ntrack,idhit,pulse2);
+ // flag = 0;
+ flag = 1; // only first next!!
+ } // end if
+ } while(flag == 0);
+ } // for isign
+}
+//______________________________________________________________________
+void AliITSsimulationSPDdubna::SetCouplingOld(Int_t row, Int_t col,
+ Int_t ntrack,Int_t idhit) {
+ // Take into account the coupling between adiacent pixels.
+ // The parameters probcol and probrow are the fractions of the
+ // signal in one pixel shared in the two adjacent pixels along
+ // the column and row direction, respectively.
+ //Begin_Html
+ /*
+ <img src="picts/ITS/barimodel_3.gif">
+ </pre>
+ <br clear=left>
+ <font size=+2 color=red>
+ <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>.
+ </font>
+ <pre>
+ */
+ //End_Html
+ // Inputs:
+ // Int_t row z cell index
+ // Int_t col x cell index
+ // Int_t ntrack track incex number
+ // Int_t idhit hit index number
+ // Int_t module module number
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+ Int_t j1,j2,flag=0;
+ Double_t pulse1,pulse2;
+ Double_t couplR=0.0,couplC=0.0;
+
+ GetCouplings(couplR,couplC);
+ if(GetDebug(3)) Info("SetCouplingOld","(row=%d,col=%d,ntrack=%d,idhit=%d) "
+ "Calling SetCoupling couplR=%e couplC=%e",
+ row,col,ntrack,idhit,couplR,couplC);
+ j1 = row;
+ j2 = col;
+ pulse1 = GetMap()->GetSignalOnly(row,col);
+ pulse2 = pulse1;
+ for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction
+ do{
+ j1 += isign;
+ pulse1 *= couplR;
+ if ((j1<0)||(j1>GetNPixelsZ()-1)||(pulse1<GetThreshold(j1,col))){
+ pulse1 = GetMap()->GetSignalOnly(row,col);
+ j1 = row;
+ flag = 1;
+ }else{
+ UpdateMapSignal(col,j1,ntrack,idhit,pulse1);
+ flag = 0;
+ } // end if
+ } while(flag == 0);
+ // loop in column direction
+ do{
+ j2 += isign;
+ pulse2 *= couplC;
+ if((j2<0)||(j2>(GetNPixelsX()-1))||(pulse2<GetThreshold(row,j2))){
+ pulse2 = GetMap()->GetSignalOnly(row,col);
+ j2 = col;
+ flag = 1;
+ }else{
+ UpdateMapSignal(j2,row,ntrack,idhit,pulse2);
+ flag = 0;
+ } // end if
+ } while(flag == 0);
+ } // for isign
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff