/**************************************************************************
- * 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. *
- **************************************************************************/
-
-/* $Id$ */
+* 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 <TGeoGlobalMagField.h>
#include <TH1.h>
-#include <TMath.h>
#include <TString.h>
-#include <TParticle.h>
-
-#include "AliRun.h"
#include "AliITS.h"
-#include "AliITShit.h"
#include "AliITSdigitSPD.h"
+#include "AliITShit.h"
#include "AliITSmodule.h"
-#include "AliITSMapA2.h"
#include "AliITSpList.h"
-#include "AliITSsimulationSPD.h"
-#include "AliITSsegmentation.h"
-#include "AliITSresponse.h"
+#include "AliITSCalibrationSPD.h"
#include "AliITSsegmentationSPD.h"
-#include "AliITSresponseSPD.h"
+#include "AliITSsimulationSPD.h"
+#include "AliLog.h"
+#include "AliRun.h"
+#include "AliMagF.h"
+#include "AliMathBase.h"
//#define DEBUG
+using std::endl;
+using std::cout;
ClassImp(AliITSsimulationSPD)
////////////////////////////////////////////////////////////////////////
-// Version: 0
-// Written by Rocco Caliandro
-// from a model developed with T. Virgili and R.A. Fini
-// June 15 2000
+// Version: 1
+// Modified by D. Elia, G.E. Bruno, H. Tydesjo
+// Fast diffusion code by Bjorn S. Nilsen
+// March-April 2006
+// October 2007: GetCalibrationObjects() removed
//
-// AliITSsimulationSPD is the simulation of SPDs
+// Version: 0
+// Written by Boris Batyunya
+// December 20 1999
//
+//
+// AliITSsimulationSPD is to do the simulation of SPDs.
+//
+////////////////////////////////////////////////////////////////////////
+
//______________________________________________________________________
-AliITSsimulationSPD::AliITSsimulationSPD() : AliITSsimulation(),
-fMapA2(0),
-fHis(0){
- // Default constructor
- // Inputs:
- // none.
- // Outputs:
- // none.
- // Return:
- // A default constructed AliITSsimulationSPD class.
+AliITSsimulationSPD::AliITSsimulationSPD():
+AliITSsimulation(),
+fHis(0),
+fSPDname(),
+fCoupling(),
+fLorentz(kFALSE),
+fTanLorAng(0),
+fStrobe(kTRUE),
+fStrobeLenght(4),
+fStrobePhase(-12.5e-9){
+ // Default constructor.
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // A default constructed AliITSsimulationSPD class.
+
+ AliDebug(1,Form("Calling default constructor"));
+// Init();
}
//______________________________________________________________________
-AliITSsimulationSPD::AliITSsimulationSPD(AliITSsegmentation *seg,
- AliITSresponse *res):
-AliITSsimulation(seg,res),
-fMapA2(0),
-fHis(0){
- // Standard constructor
- // Inputs:
- // AliITSsegmentation *seg Segmentation class to be used
- // AliITSresonse *res Response class to be used
- // Outputs:
- // none.
- // Return:
- // A standard constructed AliITSsimulationSPD class.
-
- Init();
+AliITSsimulationSPD::AliITSsimulationSPD(AliITSDetTypeSim *dettyp):
+AliITSsimulation(dettyp),
+fHis(0),
+fSPDname(),
+fCoupling(),
+fLorentz(kFALSE),
+fTanLorAng(0),
+fStrobe(kTRUE),
+fStrobeLenght(4),
+fStrobePhase(-12.5e-9){
+ // standard constructor
+ // Inputs:
+ // AliITSsegmentation *seg A pointer to the segmentation class
+ // to be used for this simulation
+ // AliITSCalibration *resp A pointer to the responce class to
+ // be used for this simulation
+ // Outputs:
+ // none.
+ // Return:
+ // A default constructed AliITSsimulationSPD class.
+
+ AliDebug(1,Form("Calling standard constructor "));
+ Init();
}
//______________________________________________________________________
-void AliITSsimulationSPD::Init() {
- // Initilizes the variables of AliITSsimulation SPD.
- // Inputs:
- // none.
- // Outputs:
- // none.
- // Return:
- // none.
-
- fHis = 0;
- if(fMapA2) delete fMapA2;
- fMapA2 = new AliITSMapA2(fSegmentation);
- if(fpList) delete fpList;
- fpList = new AliITSpList(GetNPixelsZ()+1,GetNPixelsX()+1);
+void AliITSsimulationSPD::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()));
+ AliITSSimuParam* simpar = fDetType->GetSimuParam();
+ AliITSsegmentationSPD* seg = (AliITSsegmentationSPD*)GetSegmentationModel(0);
+ Double_t bias = simpar->GetSPDBiasVoltage();
+// cout << "Bias Voltage --> " << bias << endl; // dom
+ simpar->SetDistanceOverVoltage(kmictocm*seg->Dy(),bias);
+// set kind of coupling ("old" or "new")
+ char opt[20];
+ simpar->GetSPDCouplingOption(opt);
+ char *old = strstr(opt,"old");
+ if (old) {
+ fCoupling=2;
+ } else {
+ fCoupling=1;
+ } // end if
+ SetLorentzDrift(simpar->GetSPDLorentzDrift());
+ if (fLorentz) SetTanLorAngle(simpar->GetSPDLorentzHoleWeight());
+ //SetStrobeGeneration(kFALSE);
+ if (fStrobe) GenerateStrobePhase();
}
//______________________________________________________________________
-void AliITSsimulationSPD::Init(AliITSsegmentationSPD *seg,
- AliITSresponseSPD *resp) {
- // Initilizes the variables of AliITSsimulation SPD.
- // Inputs:
- // AliITSsegmentationSPD replacement segmentation class to be used
- // aliITSresponseSPD replacement response class to be used
- // Outputs:
- // none.
- // Return:
- // none.
-
- if(fHis){
- fHis->Delete();
- delete fHis;
- } // end if fHis
- fHis = 0;
- if(fResponse) delete fResponse;
- fResponse = resp;
- if(fSegmentation) delete fSegmentation;
- fSegmentation = seg;
- if(fMapA2) delete fMapA2;
- fMapA2 = new AliITSMapA2(fSegmentation);
- if(fpList) delete fpList;
- fpList = new AliITSpList(GetNPixelsZ()+1,GetNPixelsX()+1);
+Bool_t AliITSsimulationSPD::SetTanLorAngle(Double_t WeightHole) {
+ // This function set the Tangent of the Lorentz angle.
+ // A weighted average is used for electrons and holes
+ // Input: Double_t WeightHole: wheight for hole: it should be in the range [0,1]
+ // output: Bool_t : kTRUE in case of success
+ //
+ if(!fDetType) {
+ AliError("AliITSsimulationSPD::SetTanLorAngle: AliITSDetTypeSim* fDetType not set ");
+ return kFALSE;}
+ if(WeightHole<0) {
+ WeightHole=0.;
+ AliWarning("AliITSsimulationSPD::SetTanLorAngle: You have asked for negative Hole weight");
+ AliWarning("AliITSsimulationSPD::SetTanLorAngle: I'm going to use only electrons");
+ }
+ if(WeightHole>1) {
+ WeightHole=1.;
+ AliWarning("AliITSsimulationSPD::SetTanLorAngle: You have asked for weight > 1");
+ AliWarning("AliITSsimulationSPD::SetTanLorAngle: I'm going to use only holes");
+ }
+ Double_t WeightEle=1.-WeightHole;
+ AliITSSimuParam* simpar = fDetType->GetSimuParam();
+ AliMagF* fld = (AliMagF*)TGeoGlobalMagField::Instance()->GetField();
+ if (!fld) AliFatal("The field is not initialized");
+ Double_t bz = fld->SolenoidField();
+ fTanLorAng = TMath::Tan(WeightHole*simpar->LorentzAngleHole(bz) +
+ WeightEle*simpar->LorentzAngleElectron(bz));
+ return kTRUE;
}
//______________________________________________________________________
-AliITSsimulationSPD::~AliITSsimulationSPD() {
- // destructor
- // Inputs:
- // none.
- // Outputs:
- // none.
- // Return:
- // none.
-
- if(fMapA2) delete fMapA2;
-
- if (fHis) {
- fHis->Delete();
- delete fHis;
- } // end if
+AliITSsimulationSPD::~AliITSsimulationSPD(){
+ // destructor
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+
+ if (fHis) {
+ fHis->Delete();
+ delete fHis;
+ } // end if fHis
}
//______________________________________________________________________
-AliITSsimulationSPD::AliITSsimulationSPD(const AliITSsimulationSPD &source) :
- AliITSsimulation(source){
- // Copy Constructor
- // Inputs:
- // none.
- // Outputs:
- // none.
- // Return:
- // A new AliITSsimulationSPD class with the same parameters as source.
-
- if(&source == this) return;
-
- this->fMapA2 = source.fMapA2;
- this->fHis = source.fHis;
- return;
+AliITSsimulationSPD::AliITSsimulationSPD(const
+ AliITSsimulationSPD
+ &s) : AliITSsimulation(s),
+fHis(s.fHis),
+fSPDname(s.fSPDname),
+fCoupling(s.fCoupling),
+fLorentz(s.fLorentz),
+fTanLorAng(s.fTanLorAng),
+fStrobe(s.fStrobe),
+fStrobeLenght(s.fStrobeLenght),
+fStrobePhase(s.fStrobePhase){
+ // Copy Constructor
+ // Inputs:
+ // AliITSsimulationSPD &s The original class for which
+ // this class is a copy of
+ // Outputs:
+ // none.
+ // Return:
+
}
//______________________________________________________________________
-AliITSsimulationSPD& AliITSsimulationSPD::operator=(const AliITSsimulationSPD
- &source) {
- // Assignment operator
- // Inputs:
- // none.
- // Outputs:
- // none.
- // Return:
- // A new AliITSsimulationSPD class with the same parameters as source.
-
- if(&source == this) return *this;
-
- this->fMapA2 = source.fMapA2;
- this->fHis = source.fHis;
- return *this;
-}
-//______________________________________________________________________
-AliITSsimulationSPD& AliITSsimulationSPD::operator=(const AliITSsimulation
- &source) {
- // Assignment operator
- // Inputs:
- // none.
- // Outputs:
- // none.
- // Return:
- // A new AliITSsimulationSPD class with the same parameters as source.
-
- if(&source == this) return *this;
- Error("AliITSsimulationSPD","Not allowed to make a = with "
- "AliITSsimulationSPD Using default creater instead");
-
- return *this;
-}
+AliITSsimulationSPD& AliITSsimulationSPD::operator=(const
+ AliITSsimulationSPD &s){
+ // Assignment operator
+ // Inputs:
+ // AliITSsimulationSPD &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;
+ fLorentz = s.fLorentz;
+ fTanLorAng = s.fTanLorAng;
+ fStrobe = s.fStrobe;
+ fStrobeLenght = s.fStrobeLenght;
+ fStrobePhase = s.fStrobePhase;
+ return *this;
+}
+/*
//______________________________________________________________________
-void AliITSsimulationSPD::InitSimulationModule(Int_t module,Int_t event){
- // Creates maps to build the list of tracks for each sumable digit
- // Inputs:
- // Int_t module // Module number to be simulated
- // Int_t event // Event number to be simulated
- // Outputs:
- // none.
- // Return
- // none.
-
- fModule = module;
- fEvent = event;
- fMapA2->ClearMap();
- fpList->ClearMap();
+AliITSsimulation& AliITSsimulationSPD::operator=(const
+ AliITSsimulation &s){
+ // Assignment operator
+ // Inputs:
+ // AliITSsimulationSPD &s The original class for which
+ // this class is a copy of
+ // Outputs:
+ // none.
+ // Return:
+
+ if(&s == this) return *this;
+ Error("AliITSsimulationSPD","Not allowed to make a = with "
+ "AliITSsimulationSPD","Using default creater instead");
+
+ return *this;
}
+*/
//______________________________________________________________________
-void AliITSsimulationSPD::FinishSDigitiseModule(){
- // Does the Sdigits to Digits work
- // Inputs:
- // none.
- // Outputs:
- // none.
- // Return:
- // none.
-
- SDigitsToDigits(fModule,fpList);
+void AliITSsimulationSPD::InitSimulationModule(Int_t module, Int_t event){
+ // This function creates maps to build the list of tracks for each
+ // 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
+
+ AliDebug(1,Form("(module=%d,event=%d)",module,event));
+ const Double_t kmictocm = 1.0e-4; // convert microns to cm.
+ AliITSSimuParam* simpar = fDetType->GetSimuParam();
+ AliITSsegmentationSPD* seg = (AliITSsegmentationSPD*)GetSegmentationModel(0);
+ SetModuleNumber(module);
+ SetEventNumber(event);
+ simpar->SetDistanceOverVoltage(kmictocm*seg->Dy(),simpar->GetSPDBiasVoltage(module));
+ ClearMap();
+}
+//_____________________________________________________________________
+void AliITSsimulationSPD::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 // 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
+
+ AliDebug(1,Form("(mod=%p, ,event=%d)",mod,event));
+ if(!(mod->GetNhits())){
+ AliDebug(1,Form("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());
+ if (fStrobe) if(event != GetEventNumber()) GenerateStrobePhase();
+ SetEventNumber(event);
+ InitSimulationModule( GetModuleNumber() , event );
+ // HitToSDigit(mod);
+ HitToSDigitFast(mod);
+ if (fDetType->GetSimuParam()->GetSPDAddNoisyFlag()) AddNoisyPixels();
+ if (fDetType->GetSimuParam()->GetSPDRemoveDeadFlag()) RemoveDeadPixels();
+
+// cout << "After Remove in SDigitiseModule !!!!!" << endl; // dom
+// cout << "Module " << mod->GetIndex() << " Event " << event << endl; // dom
+ WriteSDigits();
+ ClearMap();
}
//______________________________________________________________________
-void AliITSsimulationSPD::SDigitiseModule(AliITSmodule *mod, Int_t dummy0,
- Int_t dummy1) {
- // Sum digitize module
- // Inputs:
- // AliITSmodule *mod The module to be SDgitized
- // Int_t dummy0 Not used kept for general compatibility
- // Int_t dummy1 Not used kept for general compatibility
- // Outputs:
- // none.
- // Return:
- // none.
- if (!(mod->GetNhits())) return; // if module has no hits then no Sdigits.
- Int_t number = 10000;
- Int_t *frowpixel = new Int_t[number];
- Int_t *fcolpixel = new Int_t[number];
- Double_t *fenepixel = new Double_t[number];
-
- dummy0 = dummy1; // remove unsued variable warning.
- fModule = mod->GetIndex();
-
- // Array of pointers to store the track index of the digits
- // leave +1, otherwise pList crashes when col=256, row=192
-
- HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,fpList);
-
- WriteSDigits(fpList);
-
- // clean memory
- delete[] frowpixel;
- delete[] fcolpixel;
- delete[] fenepixel;
- fMapA2->ClearMap();
- fpList->ClearMap();
+void AliITSsimulationSPD::WriteSDigits(){
+ // This function adds each S-Digit to pList
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // none
+ Int_t ix, nix, iz, niz;
+ static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
+
+ AliDebug(1,Form("Writing SDigits for module %d",GetModuleNumber()));
+// cout << "WriteSDigits for module " << GetModuleNumber() << endl; // dom
+ GetMap()->GetMaxMapIndex(niz, nix);
+ for(iz=0; iz<niz; iz++)for(ix=0; ix<nix; ix++){
+ if(GetMap()->GetSignalOnly(iz,ix)>0.0){
+// cout << " Signal gt 0 iz ix " << iz << ix << " Module " << GetModuleNumber() << endl; // dom
+ aliITS->AddSumDigit(*(GetMap()->GetpListItem(iz,ix)));
+ if(AliDebugLevel()>0) {
+ AliDebug(1,Form("%d, %d",iz,ix));
+ cout << *(GetMap()->GetpListItem(iz,ix)) << endl;
+ } // end if GetDebug
+ } // end if GetMap()->GetSignalOnly(iz,ix)>0.0
+ } // end for iz,ix
+ return;
}
//______________________________________________________________________
-void AliITSsimulationSPD::DigitiseModule(AliITSmodule *mod, Int_t,Int_t) {
- // digitize module. Also need to digitize modules with only noise.
- // Inputs:
- // AliITSmodule *mod The module to be SDgitized
- // Outputs:
- // none.
- // Return:
- // none.
-
- Int_t number = 10000;
- Int_t *frowpixel = new Int_t[number];
- Int_t *fcolpixel = new Int_t[number];
- Double_t *fenepixel = new Double_t[number];
-
- // Array of pointers to store the track index of the digits
- // leave +1, otherwise pList crashes when col=256, row=192
- fModule = mod->GetIndex();
- // noise setting
- SetFluctuations(fpList,fModule);
-
- HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,fpList);
-
- // apply mask to SPD module
- SetMask();
-
- CreateDigit(fModule,fpList);
-
- // clean memory
- delete[] frowpixel;
- delete[] fcolpixel;
- delete[] fenepixel;
- fMapA2->ClearMap();
- fpList->ClearMap();
+void AliITSsimulationSPD::FinishSDigitiseModule(){
+ // This function calls SDigitsToDigits which creates Digits from SDigits
+ // Inputs:
+ // none
+ // Outputs:
+ // none
+ // Return
+ // none
+
+ AliDebug(1,"()");
+// cout << "FinishSDigitiseModule for module " << GetModuleNumber() << endl; // dom
+ FrompListToDigits(); // Charge To Signal both adds noise and
+ ClearMap();
+ return;
}
//______________________________________________________________________
-void AliITSsimulationSPD::SDigitsToDigits(Int_t module,AliITSpList *pList) {
- // sum digits to Digits.
- // Inputs:
- // AliITSmodule *mod The module to be SDgitized
- // AliITSpList *pList the array of SDigits
- // Outputs:
- // AliITSpList *pList the array of SDigits
- // Return:
- // none.
+void AliITSsimulationSPD::DigitiseModule(AliITSmodule *mod,Int_t,
+ Int_t event){
+ // 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 Dummy.
+ // Int_t Dummy
+ // Outputs:
+ // none.
+ // Return:
+ // none.
- if(GetDebug()){
- cout << "Entering AliITSsimulatinSPD::SDigitsToDigits for module=";
- cout << module << endl;
- } // end if GetDebug
- fModule = module;
+ if (fStrobe) if(event != GetEventNumber()) GenerateStrobePhase();
+ AliDebug(1,Form("(mod=%p,,0)",mod));
+ // HitToSDigit(mod);
+ InitSimulationModule( mod->GetIndex(), event );
+ HitToSDigitFast(mod);
+
+ if (fDetType->GetSimuParam()->GetSPDAddNoisyFlag()) AddNoisyPixels();
+ if (fDetType->GetSimuParam()->GetSPDRemoveDeadFlag()) RemoveDeadPixels();
+// cout << "After Remove in DigitiseModule in module " << mod->GetIndex() << endl; // dom
+ FrompListToDigits();
+ ClearMap();
+}
+//______________________________________________________________________
+void AliITSsimulationSPD::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.
+ const Double_t kBunchLenght = 25e-9; // LHC clock
+ 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,ld=0.0;
+ Double_t x,y,z,t,tp,st,dt=0.2,el,sig,sigx,sigz,fda;
+ AliITSsegmentationSPD* seg = (AliITSsegmentationSPD*)GetSegmentationModel(0);
+ AliITSSimuParam *simpar = fDetType->GetSimuParam();
+ Double_t thick = 0.5*kmictocm*seg->Dy(); // Half Thickness
+ simpar->GetSPDSigmaDiffusionAsymmetry(fda); //
- // noise setting
- SetFluctuations(pList,module);
+ AliDebug(1,Form("(mod=%p) fCoupling=%d",mod,fCoupling));
+ if(nhits<=0) return;
+ for(h=0;h<nhits;h++){
+ if(AliDebugLevel()>0) {
+ AliDebug(1,Form("Hits, %d", h));
+ cout << *(mod->GetHit(h)) << endl;
+ } // end if GetDebug
+ // Check if the hit is inside readout window
+ if (fStrobe)
+ if ((mod->GetHit(h)->GetTOF() < fStrobePhase) ||
+ (mod->GetHit(h)->GetTOF() > (fStrobePhase+(Double_t)fStrobeLenght*kBunchLenght))) continue;
+ 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(!(seg->LocalToDet(x,z,ix,iz))) continue; // outside
+ //el = res->GeVToCharge((Double_t)(dt*de));
+ el = dt * de / simpar->GetGeVToCharge();
+ if(GetDebug(1)){
+ if(el<=0.0) cout<<"el="<<el<<" dt="<<dt
+ <<" de="<<de<<endl;
+ } // end if GetDebug
+ sig = simpar->SigmaDiffusion1D(TMath::Abs(thick + y));
+ sigx=sig;
+ sigz=sig*fda;
+ if (fLorentz) ld=(y+thick)*fTanLorAng;
+ SpreadChargeAsym(x,z,ix,iz,el,sigx,sigz,ld,idtrack,h);
+ } // end for t
+ } else { // st == 0.0 deposit it at this point
+ x = x0;
+ y = y0;
+ z = z0;
+ if(!(seg->LocalToDet(x,z,ix,iz))) continue; // outside
+ //el = res->GeVToCharge((Double_t)de);
+ el = de / simpar->GetGeVToCharge();
+ sig = simpar->SigmaDiffusion1D(TMath::Abs(thick + y));
+ sigx=sig;
+ sigz=sig*fda;
+ if (fLorentz) ld=(y+thick)*fTanLorAng;
+ SpreadChargeAsym(x,z,ix,iz,el,sigx,sigz,ld,idtrack,h);
+ } // end if st>0.0
- fMapA2->ClearMap(); // since noise is in pList aready. Zero Map so that
- // noise is not doubled when calling FillMapFrompList.
+ } // Loop over all hits h
- FillMapFrompList(pList);
+ // Coupling
+ switch (fCoupling) {
+ default:
+ break;
+ case 1: //case 3:
+ 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);
+ } // end for i
+ break;
+ case 2: // case 4:
+ 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);
+ } // end for i
+ break;
+ } // end switch
+ if(GetDebug(2))Info("HitToSDigit","Finished fCoupling=%d",fCoupling);
+}
+//______________________________________________________________________
+void AliITSsimulationSPD::HitToSDigitFast(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.
+ const Int_t kn10=10;
+ const Double_t kti[kn10]={7.443716945e-3,2.166976971e-1,3.397047841e-1,
+ 4.325316833e-1,4.869532643e-1,5.130467358e-1,
+ 5.674683167e-1,6.602952159e-1,7.833023029e-1,
+ 9.255628306e-1};
+ const Double_t kwi[kn10]={1.477621124e-1,1.346333597e-1,1.095431813e-1,
+ 7.472567455e-2,3.333567215e-2,3.333567215e-2,
+ 7.472567455e-2,1.095431813e-1,1.346333597e-1,
+ 1.477621124e-1};
+ const Double_t kBunchLenght = 25e-9; // LHC clock
+ 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,ld=0.0;
+ Double_t x,y,z,t,st,el,sig,sigx,sigz,fda;
+ AliITSsegmentationSPD* seg = (AliITSsegmentationSPD*)GetSegmentationModel(0);
+ AliITSSimuParam* simpar = fDetType->GetSimuParam();
+ Double_t thick = 0.5*kmictocm*seg->Dy(); // Half thickness
+ simpar->GetSPDSigmaDiffusionAsymmetry(fda);
+// cout << "Half Thickness " << thick << endl; // dom
+// cout << "Diffusion asymm " << fda << endl; // dom
- // apply mask to SPD module
- SetMask();
+ AliDebug(1,Form("(mod=%p) fCoupling=%d",mod,fCoupling));
+ if(nhits<=0) return;
+ for(h=0;h<nhits;h++){
+ if(AliDebugLevel()>0) {
+ AliDebug(1,Form("Hits, %d", h));
+ cout << *(mod->GetHit(h)) << endl;
+ } // end if GetDebug
+ // Check if the hit is inside readout window
+ if (fStrobe)
+ if ((mod->GetHit(h)->GetTOF() < fStrobePhase) ||
+ (mod->GetHit(h)->GetTOF() > (fStrobePhase+(Double_t)fStrobeLenght*kBunchLenght))) continue;
+ 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) for(i=0;i<kn10;i++){ // Integrate over t
+ t = kti[i];
+ x = x0+x1*t;
+ y = y0+y1*t;
+ z = z0+z1*t;
+ if(!(seg->LocalToDet(x,z,ix,iz))) continue; // outside
+ el = kwi[i]*de/simpar->GetGeVToCharge();
+ if(GetDebug(1)){
+ if(el<=0.0) cout<<"el="<<el<<" kwi["<<i<<"]="<<kwi[i]
+ <<" de="<<de<<endl;
+ } // end if GetDebug
+ sig = simpar->SigmaDiffusion1D(TMath::Abs(thick + y));
+ sigx=sig;
+ sigz=sig*fda;
+ if (fLorentz) ld=(y+thick)*fTanLorAng;
+ SpreadChargeAsym(x,z,ix,iz,el,sigx,sigz,ld,idtrack,h);
+// cout << "sigx sigz " << sigx << " " << sigz << endl; // dom
+ } // end for i // End Integrate over t
+ else { // st == 0.0 deposit it at this point
+ x = x0;
+ y = y0;
+ z = z0;
+ if(!(seg->LocalToDet(x,z,ix,iz))) continue; // outside
+ el = de / simpar->GetGeVToCharge();
+ sig = simpar->SigmaDiffusion1D(TMath::Abs(thick + y));
+ sigx=sig;
+ sigz=sig*fda;
+ if (fLorentz) ld=(y+thick)*fTanLorAng;
+ SpreadChargeAsym(x,z,ix,iz,el,sigx,sigz,ld,idtrack,h);
+ } // end if st>0.0
- CreateDigit(module,pList);
+ } // Loop over all hits h
- fMapA2->ClearMap();
- pList->ClearMap();
-}
-//______________________________________________________________________
-void AliITSsimulationSPD::UpdateMapSignal(Int_t row,Int_t col,Int_t trk,
- Int_t hit,Int_t mod,Double_t ene,
- AliITSpList *pList) {
- // updates the Map of signal, adding the energy (ene) released by
- // the current track
- // Inputs:
- // Int_t row pixel row number
- // Int_t col pixel column number
- // Int_t trk track number which contributed
- // Int_t hit hit number which contributed
- // Int_t mod module number
- // Double_t ene the energy associated with this contribution
- // AliITSpList *pList the array of SDigits
- // Outputs:
- // AliITSpList *pList the array of SDigits
- // Return:
- // none.
-
- fMapA2->AddSignal(row,col,ene);
- pList->AddSignal(row,col,trk,hit,mod,ene);
-}
-//______________________________________________________________________
-void AliITSsimulationSPD::UpdateMapNoise(Int_t row,Int_t col,Int_t mod,
- Double_t ene,AliITSpList *pList) {
- // updates the Map of noise, adding the energy (ene) give my noise
- // Inputs:
- // Int_t row pixel row number
- // Int_t col pixel column number
- // Int_t mod module number
- // Double_t ene the energy associated with this contribution
- // AliITSpList *pList the array of SDigits
- // Outputs:
- // AliITSpList *pList the array of SDigits
- // Return:
- // none.
-
- fMapA2->AddSignal(row,col,ene);
- pList->AddNoise(row,col,mod,ene);
-}
-//______________________________________________________________________
-void AliITSsimulationSPD::HitsToAnalogDigits(AliITSmodule *mod,
- Int_t *frowpixel,Int_t *fcolpixel,
- Double_t *fenepixel,
- AliITSpList *pList) {
- // Loops over all hits to produce Analog/floting point digits. This
- // is also the first task in producing standard digits.
- // Inputs:
- // AliITSmodule *mod module class
- // Int_t *frowpixel array of pixel rows
- // Int_t *fcolpixel array of pixel columns
- // Double_t *fenepiexel array of pixel energies
- // AliITSpList *pList the array of SDigits
- // Outputs:
- // AliITSpList *pList the array of SDigits
- // Return:
- // none.
-
- // loop over hits in the module
- Int_t hitpos,nhits = mod->GetNhits();
- for (hitpos=0;hitpos<nhits;hitpos++) {
- HitToDigit(mod,hitpos,frowpixel,fcolpixel,fenepixel,pList);
- }// end loop over digits
+ // Coupling
+ switch (fCoupling) {
+ default:
+ break;
+ case 1: // case 3:
+ 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);
+ } // end for i
+ break;
+ case 2: // case 4:
+ 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);
+ } // end for i
+ break;
+ } // end switch
+ if(GetDebug(2))Info("HitToSDigit","Finished fCoupling=%d",fCoupling);
}
//______________________________________________________________________
-void AliITSsimulationSPD::HitToDigit(AliITSmodule *mod,Int_t hitpos,
- Int_t *frowpixel,Int_t *fcolpixel,
- Double_t *fenepixel,AliITSpList *pList) {
- // Steering function to determine the digits associated to a given
- // hit (hitpos)
- // The digits are created by charge sharing (ChargeSharing) and by
- // capacitive coupling (SetCoupling). At all the created digits is
- // associated the track number of the hit (ntrack)
- // Inputs:
- // AliITSmodule *mod module class
- // Int_t hitpos hit index value
- // Int_t *frowpixel array of pixel rows
- // Int_t *fcolpixel array of pixel columns
- // Double_t *fenepiexel array of pixel energies
- // AliITSpList *pList the array of SDigits
- // Outputs:
- // AliITSpList *pList the array of SDigits
- // Return:
- // none.
- Double_t x1l=0.0,y1l=0.0,z1l=0.0,x2l=0.0,y2l=0.0,z2l=0.0;
- Int_t r1,r2,c1,c2,row,col,npixel = 0;
- Int_t ntrack;
- Double_t ene=0.0,etot=0.0;
- const Float_t kconv = 10000.; // cm -> microns
- const Float_t kconv1= 0.277e9; // GeV -> electrons equivalent
-
- if(!(mod->LineSegmentL(hitpos,x1l,x2l,y1l,y2l,z1l,z2l,etot,ntrack)))return;
-
- x2l += x1l; y2l += y1l; z2l += z1l; // Convert to ending coordinate.
- // positions shifted and converted in microns
- x1l = x1l*kconv + fSegmentation->Dx()/2.;
- z1l = z1l*kconv + fSegmentation->Dz()/2.;
- // positions shifted and converted in microns
- x2l = x2l*kconv + fSegmentation->Dx()/2.;
- z2l = z2l*kconv + fSegmentation->Dz()/2.;
- etot *= kconv1; // convert from GeV to electrons equivalent.
- Int_t module = mod->GetIndex();
-
- // to account for the effective sensitive area
- // introduced in geometry
- if (z1l<0 || z1l>fSegmentation->Dz()) return;
- if (z2l<0 || z2l>fSegmentation->Dz()) return;
- if (x1l<0 || x1l>fSegmentation->Dx()) return;
- if (x2l<0 || x2l>fSegmentation->Dx()) return;
-
- //Get the col and row number starting from 1
- // the x direction is not inverted for the second layer!!!
- fSegmentation->GetPadIxz(x1l, z1l, c1, r1);
- fSegmentation->GetPadIxz(x2l, z2l, c2, r2);
-
- // to account for unexpected equal entrance and
- // exit coordinates
- if (x1l==x2l) x2l=x2l+x2l*0.1;
- if (z1l==z2l) z2l=z2l+z2l*0.1;
-
- if ((r1==r2) && (c1==c2)){
- // no charge sharing
- npixel = 1;
- frowpixel[npixel-1] = r1;
- fcolpixel[npixel-1] = c1;
- fenepixel[npixel-1] = etot;
- } else {
- // charge sharing
- ChargeSharing(x1l,z1l,x2l,z2l,c1,r1,c2,r2,etot,
- npixel,frowpixel,fcolpixel,fenepixel);
- } // end if r1==r2 && c1==c2.
-
- for (Int_t npix=0;npix<npixel;npix++){
- row = frowpixel[npix];
- col = fcolpixel[npix];
- ene = fenepixel[npix];
- UpdateMapSignal(row,col,ntrack,hitpos,module,ene,pList);
- // Starting capacitive coupling effect
- SetCoupling(row,col,ntrack,hitpos,module,pList);
- } // end for npix
+void AliITSsimulationSPD::SpreadCharge(Double_t x0,Double_t z0,
+ Int_t ix0,Int_t iz0,
+ Double_t el,Double_t sig,Double_t ld,
+ 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)
+ // if fLorentz=kTRUE, then x0=x0+ld (Lorentz drift taken into account)
+ // 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 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)
+ // Double_t ld lorentz drift in x 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;
+ AliITSsegmentationSPD* seg = (AliITSsegmentationSPD*)GetSegmentationModel(0);
+
+
+ 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,seg->Npx()-1);
+ izs = TMath::Max(-knz+iz0,0);
+ ize = TMath::Min(knz+iz0,seg->Npz()-1);
+ for(ix=ixs;ix<=ixe;ix++) for(iz=izs;iz<=ize;iz++){
+ seg->DetToLocal(ix,iz,x,z); // pixel center
+ x1 = x;
+ z1 = z;
+ x2 = x1 + 0.5*kmictocm*seg->Dpx(ix); // Upper
+ x1 -= 0.5*kmictocm*seg->Dpx(ix); // Lower
+ z2 = z1 + 0.5*kmictocm*seg->Dpz(iz); // Upper
+ z1 -= 0.5*kmictocm*seg->Dpz(iz); // Lower
+ x1 -= x0+ld; // Distance from where track traveled (taking into account the Lorentz drift)
+ x2 -= x0+ld; // Distance from where track traveled (taking into account the Lorentz drift)
+ z1 -= z0; // Distance from where track traveled
+ z2 -= z0; // Distance from where track traveled
+ s = 0.25; // Correction based on definision of Erfc
+ s *= AliMathBase::ErfcFast(sp*x1) - AliMathBase::ErfcFast(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 *= AliMathBase::ErfcFast(sp*z1) - AliMathBase::ErfcFast(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 AliITSsimulationSPD::ChargeSharing(Float_t x1l,Float_t z1l,Float_t x2l,
- Float_t z2l,Int_t c1,Int_t r1,Int_t c2,
- Int_t r2,Float_t etot,
- Int_t &npixel,Int_t *frowpixel,
- Int_t *fcolpixel,Double_t *fenepixel){
- // Take into account the geometrical charge sharing when the track
- // crosses more than one pixel.
- // Inputs:
- // Float_t x1l
- // Float_t z1l
- // Float_t x2l
- // Float_t z2l
- // Int_t c1
- // Int_t r1
- // Int_t c2
- // Int_t r2
- // Float_t etot
- // Int_t &npixel
- // Int_t *frowpixel array of pixel rows
- // Int_t *fcolpixel array of pixel columns
- // Double_t *fenepiexel array of pixel energies
- // Outputs:
- // Int_t &npixel
- // Return:
- // none.
- //
- //Begin_Html
- /*
- <img src="picts/ITS/barimodel_2.gif">
- </pre>
- <br clear=left>
- <font size=+2 color=red>
- <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>.
- </font>
- <pre>
- */
- //End_Html
- //Float_t dm;
- Float_t xa,za,xb,zb,dx,dz,dtot,refr,refm,refc;
- Float_t refn=0.;
- Float_t arefm, arefr, arefn, arefc, azb, az2l, axb, ax2l;
- Int_t dirx,dirz,rb,cb;
- Int_t flag,flagrow,flagcol;
- Double_t epar;
-
- npixel = 0;
- xa = x1l;
- za = z1l;
-// dx = x1l-x2l;
-// dz = z1l-z2l;
- dx = x2l-x1l;
- dz = z2l-z1l;
- dtot = TMath::Sqrt((dx*dx)+(dz*dz));
- if (dtot==0.0) dtot = 0.01;
- dirx = (Int_t) TMath::Sign((Float_t)1,dx);
- dirz = (Int_t) TMath::Sign((Float_t)1,dz);
-
- // calculate the x coordinate of the pixel in the next column
- // and the z coordinate of the pixel in the next row
- Float_t xpos, zpos;
-
- fSegmentation->GetPadCxz(c1, r1-1, xpos, zpos);
-
- Float_t xsize = fSegmentation->Dpx(0);
- Float_t zsize = fSegmentation->Dpz(r1-1);
-
- if (dirx == 1) refr = xpos+xsize/2.;
- else refr = xpos-xsize/2.;
-
- if (dirz == 1) refn = zpos+zsize/2.;
- else refn = zpos-zsize/2.;
-
- flag = 0;
- flagrow = 0;
- flagcol = 0;
- do{
- // calculate the x coordinate of the intersection with the pixel
- // in the next cell in row direction
- if(dz!=0)
- refm = dx*((refn - z1l)/dz) + x1l;
- else
- refm = refr+dirx*xsize;
-
- // calculate the z coordinate of the intersection with the pixel
- // in the next cell in column direction
- if (dx!=0)
- refc = dz*((refr - x1l)/dx) + z1l;
- else
- refc = refn+dirz*zsize;
-
- arefm = refm * dirx;
- arefr = refr * dirx;
- arefn = refn * dirz;
- arefc = refc * dirz;
-
- if ((arefm < arefr) && (arefn < arefc)){
- // the track goes in the pixel in the next cell in row direction
- xb = refm;
- zb = refn;
- cb = c1;
- rb = r1 + dirz;
- azb = zb * dirz;
- az2l = z2l * dirz;
- if (rb == r2) flagrow=1;
- if (azb > az2l) {
- zb = z2l;
- xb = x2l;
- } // end if
- // shift to the pixel in the next cell in row direction
- Float_t zsizeNext = fSegmentation->Dpz(rb-1);
- //to account for cell at the borders of the detector
- if(zsizeNext==0) zsizeNext = zsize;
- refn += zsizeNext*dirz;
- }else {
- // the track goes in the pixel in the next cell in column direction
- xb = refr;
- zb = refc;
- cb = c1 + dirx;
- rb = r1;
- axb = xb * dirx;
- ax2l = x2l * dirx;
- if (cb == c2) flagcol=1;
- if (axb > ax2l) {
- zb = z2l;
- xb = x2l;
- } // end ifaxb > ax2l
-
- // shift to the pixel in the next cell in column direction
- Float_t xsizeNext = fSegmentation->Dpx(cb-1);
- //to account for cell at the borders of the detector
- if(xsizeNext==0) xsizeNext = xsize;
- refr += xsizeNext*dirx;
- } // end if (arefm < arefr) && (arefn < arefc)
-
- //calculate the energy lost in the crossed pixel
- epar = TMath::Sqrt((xb-xa)*(xb-xa)+(zb-za)*(zb-za));
- epar = etot*(epar/dtot);
-
- //store row, column and energy lost in the crossed pixel
- frowpixel[npixel] = r1;
- fcolpixel[npixel] = c1;
- fenepixel[npixel] = epar;
- npixel++;
-
- // the exit point of the track is reached
- if (epar == 0) flag = 1;
- if ((r1 == r2) && (c1 == c2)) flag = 1;
- if (flag!=1) {
- r1 = rb;
- c1 = cb;
- xa = xb;
- za = zb;
- } // end if flag!=1
- } while (flag==0);
+void AliITSsimulationSPD::SpreadChargeAsym(Double_t x0,Double_t z0,
+ Int_t ix0,Int_t iz0,
+ Double_t el,Double_t sigx,Double_t sigz,
+ Double_t ld,Int_t t,Int_t hi){
+ // Spreads the charge over neighboring cells. Assume charge is distributed
+ // as charge(x,z) = (el/2*pi*sigx*sigz)*exp(-arg)
+ // arg=((x-x0)*(x-x0)/2*sigx*sigx)+((z-z0*z-z0)/2*sigz*sigz)
+ // if fLorentz=kTRUE, then x0=x0+ld (Lorentz drift taken into account)
+ // 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 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 sigx Sigma difusion along x for this step (y0 dependent)
+ // Double_t sigz Sigma difusion along z for this step (y0 dependent)
+ // Double_t ld lorentz drift in x for this stip (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,spx,spz;
+ AliITSsegmentationSPD* seg = (AliITSsegmentationSPD*)GetSegmentationModel(0);
+
+
+ if(GetDebug(4)) Info("SpreadChargeAsym","(x0=%e,z0=%e,ix0=%d,iz0=%d,el=%e,"
+ "sigx=%e, sigz=%e, t=%d,i=%d)",x0,z0,ix0,iz0,el,sigx,sigz,t,hi);
+ if(sigx<=0.0 || sigz<=0.0) { // if sig<=0 No diffusion to simulate.
+ GetMap()->AddSignal(iz0,ix0,t,hi,GetModuleNumber(),el);
+ if(GetDebug(2)){
+ cout << "sigx<=0.0=" << sigx << endl;
+ cout << "sigz<=0.0=" << sigz << endl;
+ } // end if GetDebug
+ return;
+ } // end if
+ spx = 1.0/(sigx*kRoot2); spz = 1.0/(sigz*kRoot2);
+ if(GetDebug(2)){
+ cout << "sigx=" << sigx << " spx=" << spx << endl;
+ cout << "sigz=" << sigz << " spz=" << spz << endl;
+ } // end if GetDebug
+ ixs = TMath::Max(-knx+ix0,0);
+ ixe = TMath::Min(knx+ix0,seg->Npx()-1);
+ izs = TMath::Max(-knz+iz0,0);
+ ize = TMath::Min(knz+iz0,seg->Npz()-1);
+ for(ix=ixs;ix<=ixe;ix++) for(iz=izs;iz<=ize;iz++){
+ seg->DetToLocal(ix,iz,x,z); // pixel center
+ x1 = x;
+ z1 = z;
+ x2 = x1 + 0.5*kmictocm*seg->Dpx(ix); // Upper
+ x1 -= 0.5*kmictocm*seg->Dpx(ix); // Lower
+ z2 = z1 + 0.5*kmictocm*seg->Dpz(iz); // Upper
+ z1 -= 0.5*kmictocm*seg->Dpz(iz); // Lower
+ x1 -= x0+ld; // Distance from where track traveled (taking into account the Lorentz drift)
+ x2 -= x0+ld; // Distance from where track traveled (taking into account the Lorentz drift)
+ z1 -= z0; // Distance from where track traveled
+ z2 -= z0; // Distance from where track traveled
+ s = 0.25; // Correction based on definision of Erfc
+ s *= AliMathBase::ErfcFast(spx*x1) - AliMathBase::ErfcFast(spx*x2);
+ if(GetDebug(3)){
+ cout <<"el="<<el<<" ix0="<<ix0<<" ix="<<ix<<" x0="<<x<<
+ " iz0="<<iz0<<" iz="<<iz<<" z0="<<z<<
+ " spx*x1="<<spx*x1<<" spx*x2="<<spx*x2<<" s="<<s;
+ } // end if GetDebug
+ s *= AliMathBase::ErfcFast(spz*z1) - AliMathBase::ErfcFast(spz*z2);
+ if(GetDebug(3)){
+ cout<<" spz*z1="<<spz*z1<<" spz*z2="<<spz*z2<<" s="<<s<< endl;
+ } // end if GetDebug
+ GetMap()->AddSignal(iz,ix,t,hi,GetModuleNumber(),s*el);
+ } // end for ix, iz
}
//______________________________________________________________________
-void AliITSsimulationSPD::SetCoupling(Int_t row, Int_t col, Int_t ntrack,
- Int_t idhit,Int_t module,
- AliITSpList *pList) {
- // 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.
- // Inputs:
- // Int_t row pixel row number
- // Int_t col pixel column number
- // Int_t ntrack track number of track contributing to this signal
- // Int_t idhit hit number of hit contributing to this signal
- // Int_t module module number
- // AliITSpList *pList the array of SDigits
- // Outputs:
- // AliITSpList *pList the array of SDigits
- // Return:
- // none.
- //
- //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
- 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);
- j1 = row;
- j2 = col;
- pulse1 = fMapA2->GetSignal(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())){
- if ((j1<0) || (j1>GetNPixelsZ()-1) || (xr>couplR)){
- j1 = row;
- flag = 1;
- }else{
- UpdateMapSignal(j1,col,ntrack,idhit,module,pulse1,pList);
- // 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())){
- if ((j2<0) || (j2>GetNPixelsX()-1) || (xr>couplC)){
- j2 = col;
- flag = 1;
- }else{
- UpdateMapSignal(row,j2,ntrack,idhit,module,pulse2,pList);
- // flag = 0;
- flag = 1; // only first next!!
- } // end if
- } while(flag == 0);
- } // for isign
+void AliITSsimulationSPD::RemoveDeadPixels(){
+ // Removes dead pixels on each module (ladder)
+ // This should be called before going from sdigits to digits (FrompListToDigits)
+ Int_t mod = GetModuleNumber();
+ AliITSCalibrationSPD* calObj = (AliITSCalibrationSPD*) fDetType->GetCalibrationModel(mod);
+
+ Int_t nrDead = calObj->GetNrBad();
+ for (Int_t i=0; i<nrDead; i++) {
+ GetMap()->DeleteHit(calObj->GetBadColAt(i), calObj->GetBadRowAt(i));
+ }
}
//______________________________________________________________________
-void AliITSsimulationSPD::SetCouplingOld(Int_t row, Int_t col, Int_t ntrack,
- Int_t idhit,Int_t module,
- AliITSpList *pList) {
- // 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.
- // Inputs:
- // Int_t row pixel row number
- // Int_t col pixel column number
- // Int_t ntrack track number of track contributing to this pixel
- // Int_t idhit hit index number of hit contributing to this pixel
- // Int_t module module number
- // AliITSpList *pList the array of SDigits
- // Outputs:
- // AliITSpList *pList the array of SDigits
- // Return:
- // none.
- //
- //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
- Int_t j1,j2,flag=0;
- Double_t pulse1,pulse2;
- Double_t couplR=0.0,couplC=0.0;
-
- GetCouplings(couplR,couplC);
- j1 = row;
- j2 = col;
- pulse1 = fMapA2->GetSignal(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())){
- pulse1 = fMapA2->GetSignal(row,col);
- j1 = row;
- flag = 1;
- }else{
- UpdateMapSignal(j1,col,ntrack,idhit,module,pulse1,pList);
- flag = 0;
- } // end if
- } while(flag == 0);
- // loop in column direction
- do{
- j2 += isign;
- pulse2 *= couplC;
- if ((j2<0) || (j2>(GetNPixelsX()-1)) || (pulse2<GetThreshold())){
- pulse2 = fMapA2->GetSignal(row,col);
- j2 = col;
- flag = 1;
- }else{
- UpdateMapSignal(row,j2,ntrack,idhit,module,pulse2,pList);
- flag = 0;
- } // end if
- } while(flag == 0);
- } // for isign
+void AliITSsimulationSPD::AddNoisyPixels() {
+ // Adds noisy pixels on each module (ladder)
+ // This should be called before going from sdigits to digits (FrompListToDigits)
+ Int_t mod = GetModuleNumber();
+ AliITSCalibrationSPD* calObj = (AliITSCalibrationSPD*) fDetType->GetSPDNoisyModel(mod);
+
+ Int_t nrNoisy = calObj->GetNrBad();
+ for (Int_t i=0; i<nrNoisy; i++) {
+ // adding 10 times the threshold will for sure make this pixel fire...
+ GetMap()->AddNoise(calObj->GetBadColAt(i), calObj->GetBadRowAt(i), mod, 10*GetThreshold());
+ }
}
//______________________________________________________________________
-void AliITSsimulationSPD::CreateDigit(Int_t module,AliITSpList *pList) {
- // The pixels are fired if the energy deposited inside them is above
- // the threshold parameter ethr. Fired pixed are interpreted as digits
- // and stored in the file digitfilename. One also needs to write out
- // cases when there is only noise (nhits==0).
- // Inputs:
- // Int_t module
- // AliITSpList *pList the array of SDigits
- // Outputs:
- // AliITSpList *pList the array of SDigits
- // Return:
- // none.
-
- static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
-
- Int_t size = AliITSdigitSPD::GetNTracks();
- Int_t * digits = new Int_t[size];
- Int_t * tracks = new Int_t[size];
- Int_t * hits = new Int_t[size];
- Float_t * charges = new Float_t[size];
- Int_t j1;
-
- module=0; // remove unused variable warning.
- for(j1=0;j1<size;j1++){tracks[j1]=-3;hits[j1]=-1;charges[j1]=0.0;}
- for (Int_t r=1;r<=GetNPixelsZ();r++) {
- for (Int_t c=1;c<=GetNPixelsX();c++) {
- // check if the deposited energy in a pixel is above the
- // threshold
- Float_t signal = (Float_t) fMapA2->GetSignal(r,c);
- if ( signal > GetThreshold()) {
- digits[0] = r-1; // digits starts from 0
- digits[1] = c-1; // digits starts from 0
- //digits[2] = 1;
- digits[2] = (Int_t) signal; // the signal is stored in
- // electrons
- for(j1=0;j1<size;j1++){
- if(j1<pList->GetNEnteries()){
- tracks[j1] = pList->GetTrack(r,c,j1);
- hits[j1] = pList->GetHit(r,c,j1);
- //}else{
- //tracks[j1] = -3;
- //hits[j1] = -1;
- } // end if
- //charges[j1] = 0;
- } // end for j1
- Float_t phys = 0;
- aliITS->AddSimDigit(0,phys,digits,tracks,hits,charges);
- if(GetDebug()){
- cout << " CreateSPDDigit mod=" << fModule << " r,c=" << r;
- cout <<","<<c<< " sig=" << fpList->GetSignalOnly(r,c);
- cout << " noise=" << fpList->GetNoise(r,c);
- cout << " Msig="<< signal << " Thres=" << GetThreshold();
- cout <<endl;
- }// end if GetDebug
- } // end if of threshold condition
- } // for c
- }// end do on pixels
- delete [] digits;
- delete [] tracks;
- delete [] hits;
- delete [] charges;
+void AliITSsimulationSPD::FrompListToDigits(){
+ // add noise and electronics, perform the zero suppression and add the
+ // digit to the list
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+ static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
+ Int_t j,ix,iz;
+ Double_t electronics;
+ Double_t sig;
+ const Int_t knmaxtrk=AliITSdigit::GetNTracks();
+ static AliITSdigitSPD dig;
+ AliITSSimuParam *simpar = fDetType->GetSimuParam();
+ if(GetDebug(1)) Info("FrompListToDigits","()");
+ for(iz=0; iz<GetNPixelsZ(); iz++) for(ix=0; ix<GetNPixelsX(); ix++){
+// NEW (for the moment plugged by hand, in the future possibly read from Data Base)
+// here parametrize the efficiency of the pixel along the row for the test columns (1,9,17,25)
+// if(iz==1 || iz == 9 || iz == 17 || iz == 25) {
+// Double_t eff,p1=0.,p2=0.;
+// Double_t x=ix;
+// switch (iz) {
+// case 1: p1=0.63460;p2=0.42438E-01;break;
+// case 9: p1=0.41090;p2=0.75914E-01;break;
+// case 17: p1=0.31883;p2=0.91502E-01;break;
+// case 25: p1=0.48828;p2=0.57975E-01;break;
+// } // end switch
+// eff=1.-p1*exp(-p2*x);
+// if (gRandom->Rndm() >= eff) continue;
+// } // end if
+// END parametrize the efficiency
+//
+ electronics = simpar->ApplySPDBaselineAndNoise();
+ 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() <<endl;
+ } // end if GetDebug
+ // if (sig+electronics <= GetThreshold()) continue;
+ if (GetMap()->GetSignal(iz,ix) <= GetThreshold()) continue;
+ dig.SetCoord1(iz);
+ dig.SetCoord2(ix);
+ dig.SetSignal(1);
+
+// dig.SetSignalSPD((Int_t) GetMap()->GetSignal(iz,ix));
+ Double_t aSignal = GetMap()->GetSignal(iz,ix);
+ if (TMath::Abs(aSignal)>2147483647.0) {
+ //PH 2147483647 is the max. integer
+ //PH This apparently is a problem which needs investigation
+ AliWarning(Form("Too big or too small signal value %f",aSignal));
+ aSignal = TMath::Sign((Double_t)2147483647,aSignal);
+ }
+ dig.SetSignalSPD((Int_t)aSignal);
+
+ for(j=0;j<knmaxtrk;j++){
+ if (j<GetMap()->GetNEntries()) {
+ 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);
+ // simulate fo signal response for this pixel hit:
+ fDetType->ProcessSPDDigitForFastOr(fModule, dig.GetCoord1(), dig.GetCoord2());
+ } // for ix/iz
}
//______________________________________________________________________
-void AliITSsimulationSPD::SetFluctuations(AliITSpList *pList,Int_t module) {
- // Set the electronic noise and threshold non-uniformities to all the
- // pixels in a detector.
- // The parameter fSigma is the squared sum of the sigma due to noise
- // and the sigma of the threshold distribution among pixels.
- // Inputs:
- // Int_t module modulel number
- // AliITSpList *pList the array of SDigits
- // Outputs:
- // AliITSpList *pList the array of SDigits
- // Return:
- // none.
- //
- //Begin_Html
- /*
- <img src="picts/ITS/barimodel_1.gif">
- </pre>
- <br clear=left>
- <font size=+2 color=red>
- <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>.
- </font>
- <pre>
- */
- //End_Html
- Double_t thr=0.0,sigm=0.0;
- Double_t signal,sigma;
- Int_t iz,ix;
-
- GetThresholds(thr,sigm);
- sigma = (Double_t) sigm;
- for(iz=1;iz<=GetNPixelsZ();iz++){
- for(ix=1;ix<=GetNPixelsX();ix++){
- signal = sigma*gRandom->Gaus();
- fMapA2->SetHit(iz,ix,signal);
- // insert in the label-signal-hit list the pixels fired
- // only by noise
- pList->AddNoise(iz,ix,module,signal);
- } // end of loop on pixels
- } // end of loop on pixels
+void AliITSsimulationSPD::CreateHistograms(){
+ // create 1D histograms for tests
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+
+ if(GetDebug(1)) Info("CreateHistograms","create histograms");
+
+ fHis = new TObjArray(GetNPixelsZ());
+ fSPDname="spd_";
+ for(Int_t i=0;i<GetNPixelsZ();i++) {
+ Char_t pixelz[4];
+ snprintf(pixelz,3,"%d",i);
+ fSPDname.Append(pixelz);
+ fHis->AddAt(new TH1F(fSPDname.Data(),"SPD maps",
+ GetNPixelsX(),0.,(Double_t)GetNPixelsX()),i);
+ } // end for i
}
//______________________________________________________________________
-void AliITSsimulationSPD::SetMask() {
- // Apply a mask to the SPD module. 1% of the pixel channels are
- // masked. When the database will be ready, the masked pixels
- // should be read from it.
- // Inputs:
- // none.
- // Outputs:
- // none.
- // Return:
- // none.
- Double_t signal;
- Int_t iz,ix,im;
- Float_t totMask;
- Float_t perc = ((AliITSresponseSPD*)fResponse)->GetFractionDead();
- // in this way we get the same set of random numbers for all runs.
- // This is a cluge for now.
- static TRandom *rnd = new TRandom();
-
- totMask= perc*GetNPixelsZ()*GetNPixelsX();
- for(im=1;im<totMask;im++){
- do{
- ix=(Int_t)(rnd->Rndm()*(GetNPixelsX()-1.) + 1.);
- } while(ix<=0 || ix>GetNPixelsX());
- do{
- iz=(Int_t)(rnd->Rndm()*(GetNPixelsZ()-1.) + 1.);
- } while(iz<=0 || iz>GetNPixelsZ());
- signal = -1.;
- fMapA2->SetHit(iz,ix,signal);
- } // end loop on masked pixels
+void AliITSsimulationSPD::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 AliITSsimulationSPD::CreateHistograms() {
- // Create Histograms
- // Inputs:
- // none.
- // Outputs:
- // none.
- // Return:
- // none.
- Int_t i;
-
- fHis=new TObjArray(GetNPixelsZ());
- for(i=0;i<GetNPixelsZ();i++) {
- TString spdname("spd_");
- Char_t candnum[4];
- sprintf(candnum,"%d",i+1);
- spdname.Append(candnum);
- (*fHis)[i] = new TH1F(spdname.Data(),"SPD maps",
- GetNPixelsX(),0.,(Float_t) GetNPixelsX());
- } // end for i
+void AliITSsimulationSPD::ResetHistograms(){
+ // Reset histograms for this detector
+ // 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 AliITSsimulationSPD::ResetHistograms() {
- // Reset histograms for this detector
- // Inputs:
- // none.
- // Outputs:
- // none.
- // Return:
- // none.
- Int_t i;
-
- for(i=0;i<GetNPixelsZ();i++ ) {
- if ((*fHis)[i]) ((TH1F*)(*fHis)[i])->Reset();
- } // end for i
+void AliITSsimulationSPD::SetCoupling(Int_t col, Int_t row) {
+ // 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 col z cell index
+ // Int_t row x cell index
+ // 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(couplC,couplR);
+ if(GetDebug(3)) Info("SetCoupling","(col=%d,row=%d) "
+ "Calling SetCoupling couplC=%e couplR=%e",
+ col,row,couplC,couplR);
+ j1 = col;
+ j2 = row;
+ pulse1 = GetMap()->GetSignalOnly(col,row);
+ pulse2 = pulse1;
+ for (Int_t isign=-1;isign<=1;isign+=2){// loop in col direction
+ do{
+ j1 += isign;
+ xr = gRandom->Rndm();
+ if ((j1<0) || (j1>GetNPixelsZ()-1) || (xr>couplC)){
+ j1 = col;
+ flag = 1;
+ }else{
+ UpdateMapNoise(row,j1,pulse1);
+ // flag = 0;
+ flag = 1; // only first next!!
+ } // end if
+ } while(flag == 0);
+ // loop in row direction
+ do{
+ j2 += isign;
+ xr = gRandom->Rndm();
+ if ((j2<0) || (j2>GetNPixelsX()-1) || (xr>couplR)){
+ j2 = row;
+ flag = 1;
+ }else{
+ UpdateMapNoise(j2,col,pulse2);
+ // flag = 0;
+ flag = 1; // only first next!!
+ } // end if
+ } while(flag == 0);
+ } // for isign
}
//______________________________________________________________________
-void AliITSsimulationSPD::WriteSDigits(AliITSpList *pList){
- // Fills the Summable digits Tree
- // Inputs:
- // AliITSpList *pList the array of SDigits
- // Outputs:
- // AliITSpList *pList the array of SDigits
- // Return:
- // none.
- Int_t i,ni,j,nj;
- static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
-
- pList->GetMaxMapIndex(ni,nj);
- for(i=0;i<ni;i++)for(j=0;j<nj;j++){
- if(pList->GetSignalOnly(i,j)>0.0){
- aliITS->AddSumDigit(*(pList->GetpListItem(i,j)));
- if(GetDebug()){
- cout << "pListSPD: " << *(pList->GetpListItem(i,j)) << endl;
- cout << " CreateSPDSDigit mod=" << fModule << " r,c=";
- cout << i <<","<< j << " sig=" << fpList->GetSignalOnly(i,j);
- cout << " noise=" << fpList->GetNoise(i,j) <<endl;
- } // end if GetDebug
- } // end if
- } // end for i,j
- return;
+void AliITSsimulationSPD::SetCouplingOld(Int_t col, Int_t row) {
+ // 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 col z cell index
+ // Int_t row x cell index
+ // 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(couplC,couplR);
+
+ // Debugging ...
+// cout << "Threshold --> " << GetThreshold() << endl; // dom
+// cout << "Couplings --> " << couplC << " " << couplR << endl; // dom
+
+ if(GetDebug(3)) Info("SetCouplingOld","(col=%d,row=%d) "
+ "Calling SetCoupling couplC=%e couplR=%e",
+ col,row,couplC,couplR);
+ for (Int_t isign=-1;isign<=1;isign+=2){// loop in col direction
+ pulse1 = GetMap()->GetSignalOnly(col,row);
+ pulse2 = pulse1;
+ j1 = col;
+ j2 = row;
+ do{
+ j1 += isign;
+ pulse1 *= couplC;
+ if ((j1<0)||(j1>GetNPixelsZ()-1)||(pulse1<GetThreshold())){
+ pulse1 = GetMap()->GetSignalOnly(col,row);
+ j1 = col;
+ flag = 1;
+ }else{
+ UpdateMapNoise(row,j1,pulse1);
+ // flag = 0;
+ flag = 1; // only first next !!
+ } // end if
+ } while(flag == 0);
+ // loop in row direction
+ do{
+ j2 += isign;
+ pulse2 *= couplR;
+ if((j2<0)||(j2>(GetNPixelsX()-1))||(pulse2<GetThreshold())){
+ pulse2 = GetMap()->GetSignalOnly(col,row);
+ j2 = row;
+ flag = 1;
+ }else{
+ UpdateMapNoise(j2,col,pulse2);
+ // flag = 0;
+ flag = 1; // only first next!!
+ } // end if
+ } while(flag == 0);
+ } // for isign
}
//______________________________________________________________________
-void AliITSsimulationSPD::FillMapFrompList(AliITSpList *pList){
- // Fills fMap2A from the pList of Summable digits
- // Inputs:
- // AliITSpList *pList the array of SDigits
- // Outputs:
- // AliITSpList *pList the array of SDigits
- // Return:
- // none.
- Int_t ix,iz;
-
- for(iz=0;iz<GetNPixelsZ();iz++)for(ix=0;ix<GetNPixelsX();ix++)
- fMapA2->AddSignal(iz,ix,pList->GetSignal(iz,ix));
- return;
+void AliITSsimulationSPD::GenerateStrobePhase()
+{
+ // Generate randomly the strobe
+ // phase w.r.t to the LHC clock
+ // Done once per event
+ const Double_t kBunchLenght = 25e-9; // LHC clock
+ fStrobePhase = ((Double_t)gRandom->Integer(fStrobeLenght))*kBunchLenght-
+ (Double_t)fStrobeLenght*kBunchLenght+
+ kBunchLenght/2;
}
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff