/**************************************************************************
-* 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. *
-**************************************************************************/
+ * 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 <TObjArray.h>
#include <TRandom.h>
+#include <TGeoGlobalMagField.h>
#include "AliITSmodule.h"
#include "AliITSMapA2.h"
#include "AliITSpList.h"
#include "AliITShit.h"
#include "AliITSdigitSSD.h"
#include "AliRun.h"
+#include "AliMagF.h"
#include "AliITSgeom.h"
#include "AliITSsimulationSSD.h"
#include "AliITSTableSSD.h"
#include <TF1.h>
-
+#include "AliMathBase.h"
ClassImp(AliITSsimulationSSD)
////////////////////////////////////////////////////////////////////////
fMapA2(0),
fIonE(0.0),
fDifConst(),
-fDriftVel(){
- //default Constructor
- //Inputs:
- // none.
- // Outputs:
- // none.
- // Return:
- // A default construction AliITSsimulationSSD class
+fDriftVel(),
+fTimeResponse(NULL),
+fLorentz(kFALSE),
+fTanLorAngP(0),
+fTanLorAngN(0)
+{
+ //default Constructor
+ //Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // A default construction AliITSsimulationSSD class
}
//----------------------------------------------------------------------
AliITSsimulationSSD::AliITSsimulationSSD(AliITSDetTypeSim* dettyp):
fIonE(0.0),
fDifConst(),
fDriftVel(),
-fTimeResponse(0){
- // Constructor
- // Input:
- // AliITSDetTypeSim Pointer to the SSD dettype to be used
- // Outputs:
- // none.
- // Return
- // A standard constructed AliITSsimulationSSD class
-
- fTimeResponse = new TF1("ftimeresponse",".5*x*exp(1.-.5*x)");
- Init();
+fTimeResponse(NULL),
+fLorentz(kFALSE),
+fTanLorAngP(0),
+fTanLorAngN(0)
+{
+ // Constructor
+ // Input:
+ // AliITSDetTypeSim Pointer to the SSD dettype to be used
+ // Outputs:
+ // none.
+ // Return
+ // A standard constructed AliITSsimulationSSD class
+
+ fTimeResponse = new TF1("ftimeresponse",".5*x*exp(1.-.5*x)");
+ Init();
}
//----------------------------------------------------------------------
void AliITSsimulationSSD::Init(){
- // Inilizer, Inilizes all of the variable as needed in a standard place.
- // Input:
- // AliITSsegmentationSSD *seg Pointer to the SSD segmentation to be used
- // AliITSCalibrationSSD *resp Pointer to the SSD responce class to be used
- // Outputs:
- // none.
- // Return
- // none.
- AliITSsegmentationSSD* seg = (AliITSsegmentationSSD*)GetSegmentationModel(2);
-
- SetDriftVelocity(); // use default values in .h file
- SetIonizeE(); // use default values in .h file
- SetDiffConst(); // use default values in .h file
- fpList = new AliITSpList(2,GetNStrips());
- fMapA2 = new AliITSMapA2(seg);
+ // Inilizer, Inilizes all of the variable as needed in a standard place.
+ // Input:
+ // AliITSsegmentationSSD *seg Pointer to the SSD segmentation to be used
+ // AliITSCalibrationSSD *resp Pointer to the SSD responce class to be used
+ // Outputs:
+ // none.
+ // Return
+ // none.
+ AliITSsegmentationSSD* seg = (AliITSsegmentationSSD*)GetSegmentationModel(2);
+ AliITSSimuParam* simpar = fDetType->GetSimuParam();
+
+ SetDriftVelocity(); // use default values in .h file
+ SetIonizeE(); // use default values in .h file
+ SetDiffConst(); // use default values in .h file
+ fpList = new AliITSpList(2,GetNStrips());
+ fMapA2 = new AliITSMapA2(seg);
+ SetLorentzDrift(simpar->GetSSDLorentzDrift());
+ if (fLorentz) SetTanLorAngle();
+}
+
+//______________________________________________________________________
+Bool_t AliITSsimulationSSD::SetTanLorAngle() {
+ // This function set the Tangent of the Lorentz angles.
+ // output: Bool_t : kTRUE in case of success
+ //
+
+ if(!fDetType) {
+ AliError("AliITSsimulationSPD::SetTanLorAngle: AliITSDetTypeSim* fDetType not set ");
+ return kFALSE;}
+
+ AliITSSimuParam* simpar = fDetType->GetSimuParam();
+ AliMagF* fld = (AliMagF*)TGeoGlobalMagField::Instance()->GetField();
+ if (!fld) AliFatal("The field is not initialized");
+ Double_t bz = fld->SolenoidField();
+
+ fTanLorAngN = TMath::Tan( simpar->LorentzAngleElectron(bz) );
+ fTanLorAngP = TMath::Tan( simpar->LorentzAngleHole(bz) );
+
+ return kTRUE;
}
+
//______________________________________________________________________
AliITSsimulationSSD& AliITSsimulationSSD::operator=(
- const AliITSsimulationSSD &s){
- // Operator =
-
- if(this==&s) return *this;
-
- // this->fDCS = new AliITSdcsSSD(*(s.fDCS));
- this->fMapA2 = s.fMapA2;
- this->fIonE = s.fIonE;
- this->fDifConst[0] = s.fDifConst[0];
- this->fDifConst[1] = s.fDifConst[1];
- this->fDriftVel[0] = s.fDriftVel[0];
- this->fDriftVel[1] = s.fDriftVel[1];
- this->fTimeResponse = s.fTimeResponse;
- return *this;
+ const AliITSsimulationSSD &s){
+ // Operator =
+
+ if(this==&s) return *this;
+
+ // this->fDCS = new AliITSdcsSSD(*(s.fDCS));
+ this->fMapA2 = s.fMapA2;
+ this->fIonE = s.fIonE;
+ this->fDifConst[0] = s.fDifConst[0];
+ this->fDifConst[1] = s.fDifConst[1];
+ this->fDriftVel[0] = s.fDriftVel[0];
+ this->fDriftVel[1] = s.fDriftVel[1];
+ this->fTimeResponse = s.fTimeResponse;
+ this->fLorentz = s.fLorentz;
+ this->fTanLorAngP = s.fTanLorAngP;
+ this->fTanLorAngN = s.fTanLorAngN;
+ return *this;
}
/*
//______________________________________________________________________
AliITSsimulation& AliITSsimulationSSD::operator=(
- const AliITSsimulation &s){
- // Operator =
+ const AliITSsimulation &s){
+ // Operator =
- if(this==&s) return *this;
- Error("AliITSsimulationSSD","Not allowed to make a = with "
+ if(this==&s) return *this;
+ Error("AliITSsimulationSSD","Not allowed to make a = with "
"AliITSsimulationSSD Using default creater instead");
-
- return *this;
+
+ return *this;
}
*/
//______________________________________________________________________
AliITSsimulationSSD::AliITSsimulationSSD(const AliITSsimulationSSD &source):
- AliITSsimulation(source),
+ AliITSsimulation(source),
fMapA2(source.fMapA2),
fIonE(source.fIonE),
fDifConst(),
fDriftVel(),
-fTimeResponse(source.fTimeResponse){
- // copy constructor
- fDifConst[0] = source.fDifConst[0];
- fDifConst[1] = source.fDifConst[1];
- fDriftVel[0] = source.fDriftVel[0];
- fDriftVel[1] = source.fDriftVel[1];
+fTimeResponse(source.fTimeResponse),
+fLorentz(source.fLorentz),
+fTanLorAngP(source.fTanLorAngP),
+fTanLorAngN(source.fTanLorAngN)
+{
+ // copy constructor
+ fDifConst[0] = source.fDifConst[0];
+ fDifConst[1] = source.fDifConst[1];
+ fDriftVel[0] = source.fDriftVel[0];
+ fDriftVel[1] = source.fDriftVel[1];
}
//______________________________________________________________________
AliITSsimulationSSD::~AliITSsimulationSSD() {
- // destructor
- delete fMapA2;
- delete fTimeResponse;
- //delete fDCS;
+ // destructor
+ delete fMapA2;
+ delete fTimeResponse;
+ //delete fDCS;
}
//______________________________________________________________________
void AliITSsimulationSSD::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.
-
- SetModuleNumber(module);
- SetEventNumber(event);
- fMapA2->ClearMap();
- fpList->ClearMap();
+ // 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.
+
+ SetModuleNumber(module);
+ SetEventNumber(event);
+ fMapA2->ClearMap();
+ fpList->ClearMap();
}
//______________________________________________________________________
void AliITSsimulationSSD::FinishSDigitiseModule(){
- // Does the Sdigits to Digits work
- // Inputs:
- // none.
- // Outputs:
- // none.
- // Return:
- // none.
-
- FillMapFrompList(fpList); // need to check if needed here or not????
- SDigitToDigit(fModule,fpList);
- fpList->ClearMap();
- fMapA2->ClearMap();
+ // Does the Sdigits to Digits work
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+
+ FillMapFrompList(fpList); // need to check if needed here or not????
+ SDigitToDigit(fModule,fpList);
+ fpList->ClearMap();
+ fMapA2->ClearMap();
}
//______________________________________________________________________
void AliITSsimulationSSD::DigitiseModule(AliITSmodule *mod,Int_t,Int_t) {
- // Digitizes hits for one SSD module
- SetModuleNumber(mod->GetIndex());
-
- HitsToAnalogDigits(mod,fpList);
- SDigitToDigit(GetModuleNumber(),fpList);
-
- fpList->ClearMap();
- fMapA2->ClearMap();
+ // Digitizes hits for one SSD module
+ SetModuleNumber(mod->GetIndex());
+
+ HitsToAnalogDigits(mod,fpList);
+ SDigitToDigit(GetModuleNumber(),fpList);
+
+ fpList->ClearMap();
+ fMapA2->ClearMap();
}
//______________________________________________________________________
void AliITSsimulationSSD::SDigitiseModule(AliITSmodule *mod,Int_t,Int_t) {
- // Produces Summable/Analog digits and writes them to the SDigit tree.
+ // Produces Summable/Analog digits and writes them to the SDigit tree.
- HitsToAnalogDigits(mod,fpList);
+ HitsToAnalogDigits(mod,fpList);
- WriteSDigits(fpList);
-
- fpList->ClearMap();
- fMapA2->ClearMap();
+ WriteSDigits(fpList);
+
+ fpList->ClearMap();
+ fMapA2->ClearMap();
}
//______________________________________________________________________
void AliITSsimulationSSD::SDigitToDigit(Int_t module,AliITSpList *pList){
- // Takes the pList and finishes the digitization.
-
- ApplyNoise(pList,module);
- ApplyCoupling(pList,module);
- ApplyDeadChannels(module);
-
- ChargeToSignal(module,pList);
+ // Takes the pList and finishes the digitization.
+
+ ApplyNoise(pList,module);
+ ApplyCoupling(pList,module);
+ ApplyDeadChannels(module);
+
+ ChargeToSignal(module,pList);
}
//______________________________________________________________________
void AliITSsimulationSSD::HitsToAnalogDigits(AliITSmodule *mod,
- AliITSpList *pList){
- // Loops over all hits to produce Analog/floating point digits. This
- // is also the first task in producing standard digits.
- Int_t lasttrack = -2;
- Int_t idtrack = -2;
- Double_t x0=0.0, y0=0.0, z0=0.0;
- Double_t x1=0.0, y1=0.0, z1=0.0;
- Double_t de=0.0;
- Int_t module = mod->GetIndex();
- Double_t tof = 0.;
-
-
- AliITSsegmentationSSD* seg = (AliITSsegmentationSSD*)GetSegmentationModel(2);
-
- TObjArray *hits = mod->GetHits();
- Int_t nhits = hits->GetEntriesFast();
- if (nhits<=0) return;
- AliITSTableSSD * tav = new AliITSTableSSD(GetNStrips());
- module = mod->GetIndex();
- if ( mod->GetLayer() == 6 ) seg->SetLayer(6);
- if ( mod->GetLayer() == 5 ) seg->SetLayer(5);
- for(Int_t i=0; i<nhits; i++) {
- // LineSegmentL returns 0 if the hit is entering
- // If hits is exiting returns positions of entering and exiting hits
- // Returns also energy loss
- if(GetDebug(4)){
- cout << i << " ";
- cout << mod->GetHit(i)->GetXL() << " "<<mod->GetHit(i)->GetYL();
- cout << " " << mod->GetHit(i)->GetZL();
- cout << endl;
- } // end if
- if (mod->LineSegmentL(i, x0, x1, y0, y1, z0, z1, de, idtrack)) {
-
- // Scale down dE/dx according to the hit's TOF wrt to the trigger
- // Necessary for pileup simulation
- // EF - 21/04/09
- tof = mod->GetHit(i)->GetTOF();
- tof *= 1.E+6; // convert time in microsecond
- de = de * fTimeResponse->Eval(-1.*tof+2.);
- //
-
- HitToDigit(module, x0, y0, z0, x1, y1, z1, de,tav);
- if (lasttrack != idtrack || i==(nhits-1)) {
+ AliITSpList *pList){
+ // Loops over all hits to produce Analog/floating point digits. This
+ // is also the first task in producing standard digits.
+ Int_t lasttrack = -2;
+ Int_t idtrack = -2;
+ Double_t x0=0.0, y0=0.0, z0=0.0;
+ Double_t x1=0.0, y1=0.0, z1=0.0;
+ Double_t de=0.0;
+ Int_t module = mod->GetIndex();
+ Double_t tof = 0.;
+
+
+ AliITSsegmentationSSD* seg = (AliITSsegmentationSSD*)GetSegmentationModel(2);
+
+ TObjArray *hits = mod->GetHits();
+ Int_t nhits = hits->GetEntriesFast();
+ if (nhits<=0) return;
+ AliITSTableSSD * tav = new AliITSTableSSD(GetNStrips());
+ module = mod->GetIndex();
+ if ( mod->GetLayer() == 6 ) seg->SetLayer(6);
+ if ( mod->GetLayer() == 5 ) seg->SetLayer(5);
+
+ for(Int_t i=0; i<nhits; i++) {
+ // LineSegmentL returns 0 if the hit is entering
+ // If hits is exiting returns positions of entering and exiting hits
+ // Returns also energy loss
+ if(GetDebug(4)){
+ cout << i << " ";
+ cout << mod->GetHit(i)->GetXL() << " "<<mod->GetHit(i)->GetYL();
+ cout << " " << mod->GetHit(i)->GetZL();
+ cout << endl;
+ } // end if
+ if (mod->LineSegmentL(i, x0, x1, y0, y1, z0, z1, de, idtrack)) {
+
+ // Scale down dE/dx according to the hit's TOF wrt to the trigger
+ // Necessary for pileup simulation
+ // EF - 21/04/09
+ tof = mod->GetHit(i)->GetTOF();
+ tof *= 1.E+6; // convert time in microsecond
+ if(tof<2.) de = de * fTimeResponse->Eval(-1.*tof+2.);
+ else de = 0.;
+ //
+
+ HitToDigit(module, x0, y0, z0, x1, y1, z1, de,tav);
+ if (lasttrack != idtrack || i==(nhits-1)) {
GetList(idtrack,i,module,pList,tav);
- } // end if
- lasttrack=idtrack;
- } // end if
- } // end loop over hits
- delete tav; tav=0;
- return;
+ } // end if
+ lasttrack=idtrack;
+ } // end if
+ } // end loop over hits
+ delete tav; tav=0;
+ return;
}
//----------------------------------------------------------------------
void AliITSsimulationSSD::HitToDigit(Int_t module, Double_t x0, Double_t y0,
- Double_t z0, Double_t x1, Double_t y1,
- Double_t z1, Double_t de,
- AliITSTableSSD *tav) {
-
- // hit to digit conversion
-
- AliITSsegmentationSSD* seg = (AliITSsegmentationSSD*)GetSegmentationModel(2);
- // Turns hits in SSD module into one or more digits.
- //Float_t tang[2] = {0.0,0.0};
- //seg->Angles(tang[0], tang[1]);//stereo<<->tan(stereo)~=stereo
- Double_t x, y, z;
- Double_t dex=0.0, dey=0.0, dez=0.0;
- Double_t pairs; // pair generation energy per step.
- Double_t sigma[2] = {0.,0.};// standard deviation of the diffusion gaussian
- Double_t tdrift[2] = {0.,0.}; // time of drift
- Double_t w;
- Double_t inf[2], sup[2], par0[2];
-
- // Steps in the module are determined "manually" (i.e. No Geant)
- // NumOfSteps divide path between entering and exiting hits in steps
- Int_t numOfSteps = NumOfSteps(x1, y1, z1, dex, dey, dez);
- // Enery loss is equally distributed among steps
- de = de/numOfSteps;
- pairs = de/GetIonizeE(); // e-h pairs generated
-
- //-----------------------------------------------------
- // stepping
- //-----------------------------------------------------
- for(Int_t j=0; j<numOfSteps; j++) { // stepping
-
- x = x0 + (j+0.5)*dex;
- y = y0 + (j+0.5)*dey;
- if ( y > (seg->Dy()/2+10)*1.0E-4 ) {
- // check if particle is within the detector
- Warning("HitToDigit",
+ Double_t z0, Double_t x1, Double_t y1,
+ Double_t z1, Double_t de,
+ AliITSTableSSD *tav) {
+
+ // hit to digit conversion
+
+ AliITSsegmentationSSD* seg = (AliITSsegmentationSSD*)GetSegmentationModel(2);
+ // Turns hits in SSD module into one or more digits.
+ //Float_t tang[2] = {0.0,0.0};
+ //seg->Angles(tang[0], tang[1]);//stereo<<->tan(stereo)~=stereo
+ Double_t x, y, z;
+ Double_t dex=0.0, dey=0.0, dez=0.0;
+ Double_t pairs; // pair generation energy per step.
+ Double_t sigma[2] = {0.,0.};// standard deviation of the diffusion gaussian
+ Double_t tdrift[2] = {0.,0.}; // time of drift
+ Double_t w;
+ Double_t inf[2], sup[2], par0[2];
+
+ // Set up corrections for Lorentz drift (ExB)
+ Double_t TanLorAngP = fTanLorAngP;
+ Double_t TanLorAngN = fTanLorAngN;
+ if(seg->GetLayer()==6) {
+ TanLorAngP = -1.*fTanLorAngP;
+ TanLorAngN = -1.*fTanLorAngN;
+ }
+
+ // Steps in the module are determined "manually" (i.e. No Geant)
+ // NumOfSteps divide path between entering and exiting hits in steps
+ Int_t numOfSteps = NumOfSteps(x1, y1, z1, dex, dey, dez);
+ // Enery loss is equally distributed among steps
+ de = de/numOfSteps;
+ pairs = de/GetIonizeE(); // e-h pairs generated
+
+ //-----------------------------------------------------
+ // stepping
+ //-----------------------------------------------------
+ for(Int_t j=0; j<numOfSteps; j++) { // stepping
+
+ x = x0 + (j+0.5)*dex;
+ y = y0 + (j+0.5)*dey;
+ if ( y > (seg->Dy()/2+10)*1.0E-4 ) {
+ // check if particle is within the detector
+ Warning("HitToDigit",
"hit out of detector y0=%e,y=%e,dey=%e,j =%d module=%d, exceed=%e",
y0,y,dey,j,module, y-(seg->Dy()/2+10)*1.0E-4);
- return;
- } // end if
- z = z0 + (j+0.5)*dez;
+ return;
+ } // end if
+ z = z0 + (j+0.5)*dez;
- if(GetDebug(4)) cout <<"HitToDigit "<<x<<" "<<y<<" "<<z<< " "
+ if(GetDebug(4)) cout <<"HitToDigit "<<x<<" "<<y<<" "<<z<< " "
<<dex<<" "<<dey<<" "<<dez<<endl;
- if(seg->GetLayer()==6) {
- y=-y; // Lay6 module has sensor up-side-down!!!
- }
-
- // w is the coord. perpendicular to the strips
- // Float_t xp=x*1.e+4,zp=z*1.e+4; // microns
- Float_t xp=x,zp=z;
- seg->GetPadTxz(xp,zp);
-
- Int_t k;
- //---------------------------------------------------------
- // Pside
- //------------------------------------------------------------
- k=0;
-
- // calculate drift time
- // y is the minimum path
- tdrift[0] = (y+(seg->Dy()*1.0E-4)/2)/GetDriftVelocity(0);
-
- w = xp; // P side strip number
-
- if((w<(-0.5)) || (w>(GetNStrips()-0.5))) {
- // this check rejects hits in regions not covered by strips
- // 0.5 takes into account boundaries
- if(GetDebug(4)) cout << "Dead SSD region, x,z="<<x<<","<<z<<endl;
- return; // There are dead region on the SSD sensitive volume!!!
- } // end if
-
- // sigma is the standard deviation of the diffusion gaussian
- if(tdrift[k]<0) return;
-
- sigma[k] = TMath::Sqrt(2*GetDiffConst(k)*tdrift[k]);
- sigma[k] /= (GetStripPitch()*1.0E-4); //units of Pitch
-
- if(sigma[k]==0.0) {
- Error("HitToDigit"," sigma[%d]=0",k);
- exit(0);
- } // end if
-
- par0[k] = pairs;
- // we integrate the diffusion gaussian from -3sigma to 3sigma
- inf[k] = w - 3*sigma[k]; // 3 sigma from the gaussian average
- sup[k] = w + 3*sigma[k]; // 3 sigma from the gaussian average
- // IntegrateGaussian does the actual
- // integration of diffusion gaussian
- IntegrateGaussian(k, par0[k], w, sigma[k], inf[k], sup[k],tav);
-
- //------------------------------------------------------
- // end Pside
- //-------------------------------------------------------
-
- //------------------------------------------------------
- // Nside
- //-------------------------------------------------------
- k=1;
- tdrift[1] = ((seg->Dy()*1.0E-4)/2-y)/GetDriftVelocity(1);
-
- //tang[k]=TMath::Tan(tang[k]);
-
- w = zp; // N side strip number
-
- if((w<(-0.5)) || (w>(GetNStrips()-0.5))) {
- // this check rejects hits in regions not covered by strips
- // 0.5 takes into account boundaries
- if(GetDebug(4)) cout << "Dead SSD region, x,z="<<x<<","<<z<<endl;
- return; // There are dead region on the SSD sensitive volume.
- } // end if
-
- // sigma is the standard deviation of the diffusion gaussian
- if(tdrift[k]<0) return;
-
- sigma[k] = TMath::Sqrt(2*GetDiffConst(k)*tdrift[k]);
- sigma[k] /= (GetStripPitch()*1.0E-4); //units of Pitch
-
- if(sigma[k]==0.0) {
- Error("HitToDigit"," sigma[%d]=0",k);
- exit(0);
- } // end if
-
- par0[k] = pairs;
- // we integrate the diffusion gaussian from -3sigma to 3sigma
- inf[k] = w - 3*sigma[k]; // 3 sigma from the gaussian average
- sup[k] = w + 3*sigma[k]; // 3 sigma from the gaussian average
- // IntegrateGaussian does the actual
- // integration of diffusion gaussian
- IntegrateGaussian(k, par0[k], w, sigma[k], inf[k], sup[k],tav);
-
- //-------------------------------------------------
- // end Nside
- //-------------------------------------------------
-
-
- } // end stepping
+ if(seg->GetLayer()==6) {
+ y=-y; // Lay6 module has sensor up-side-down!!!
+ }
+
+ Int_t k;
+ //---------------------------------------------------------
+ // Pside
+ //------------------------------------------------------------
+ k=0;
+
+ // w is the coord. perpendicular to the strips
+ // Float_t xp=x*1.e+4,zp=z*1.e+4; // microns
+ Float_t xp=x,zp=z;
+
+ // correction for the Lorentz's angle
+ if(fLorentz) {
+ Float_t deltaxp = (y+(seg->Dy()*1.0E-4)/2)*TanLorAngP;
+ xp+=deltaxp;
+ }
+
+ seg->GetPadTxz(xp,zp);
+
+ // calculate drift time
+ // y is the minimum path
+ tdrift[0] = (y+(seg->Dy()*1.0E-4)/2)/GetDriftVelocity(0);
+
+ w = xp; // P side strip number
+
+ if((w<(-0.5)) || (w>(GetNStrips()-0.5))) {
+ // this check rejects hits in regions not covered by strips
+ // 0.5 takes into account boundaries
+ if(GetDebug(4)) cout << "Dead SSD region, x,z="<<x<<","<<z<<endl;
+ return; // There are dead region on the SSD sensitive volume!!!
+ } // end if
+ // sigma is the standard deviation of the diffusion gaussian
+ if(tdrift[k]<0) return;
+
+ sigma[k] = TMath::Sqrt(2*GetDiffConst(k)*tdrift[k]);
+ sigma[k] /= (GetStripPitch()*1.0E-4); //units of Pitch
+
+ if(sigma[k]==0.0) {
+ Error("HitToDigit"," sigma[%d]=0",k);
+ exit(0);
+ } // end if
+
+ par0[k] = pairs;
+ // we integrate the diffusion gaussian from -3sigma to 3sigma
+ inf[k] = w - 3*sigma[k]; // 3 sigma from the gaussian average
+ sup[k] = w + 3*sigma[k]; // 3 sigma from the gaussian average
+ // IntegrateGaussian does the actual
+ // integration of diffusion gaussian
+ IntegrateGaussian(k, par0[k], w, sigma[k], inf[k], sup[k],tav);
+
+ //------------------------------------------------------
+ // end Pside
+ //-------------------------------------------------------
+
+ //------------------------------------------------------
+ // Nside
+ //-------------------------------------------------------
+ k=1;
+
+ xp=x; zp=z;
+
+ // correction for the Lorentz's angle
+ if(fLorentz) {
+ Float_t deltaxn = ((seg->Dy()*1.0E-4)/2-y)*TanLorAngN;
+ xp+=deltaxn;
+ }
+
+
+ seg->GetPadTxz(xp,zp);
+
+ tdrift[1] = ((seg->Dy()*1.0E-4)/2-y)/GetDriftVelocity(1);
+
+ //tang[k]=TMath::Tan(tang[k]);
+
+ w = zp; // N side strip number
+
+ if((w<(-0.5)) || (w>(GetNStrips()-0.5))) {
+ // this check rejects hits in regions not covered by strips
+ // 0.5 takes into account boundaries
+ if(GetDebug(4)) cout << "Dead SSD region, x,z="<<x<<","<<z<<endl;
+ return; // There are dead region on the SSD sensitive volume.
+ } // end if
+
+ // sigma is the standard deviation of the diffusion gaussian
+ if(tdrift[k]<0) return;
+
+ sigma[k] = TMath::Sqrt(2*GetDiffConst(k)*tdrift[k]);
+ sigma[k] /= (GetStripPitch()*1.0E-4); //units of Pitch
+
+ if(sigma[k]==0.0) {
+ Error("HitToDigit"," sigma[%d]=0",k);
+ exit(0);
+ } // end if
+
+ par0[k] = pairs;
+ // we integrate the diffusion gaussian from -3sigma to 3sigma
+ inf[k] = w - 3*sigma[k]; // 3 sigma from the gaussian average
+ sup[k] = w + 3*sigma[k]; // 3 sigma from the gaussian average
+ // IntegrateGaussian does the actual
+ // integration of diffusion gaussian
+ IntegrateGaussian(k, par0[k], w, sigma[k], inf[k], sup[k],tav);
+
+ //-------------------------------------------------
+ // end Nside
+ //-------------------------------------------------
+
+
+ } // end stepping
}
//______________________________________________________________________
void AliITSsimulationSSD::ApplyNoise(AliITSpList *pList,Int_t module){
- // Apply Noise.
- Int_t ix;
- Double_t signal,noise;
- AliITSCalibrationSSD* res =(AliITSCalibrationSSD*)GetCalibrationModel(module);
-
- // Pside
- for(ix=0;ix<GetNStrips();ix++){ // loop over strips
-
- // noise is gaussian
- noise = (Double_t) gRandom->Gaus(0,res->GetNoiseP(ix));
-
- // need to calibrate noise
- // NOTE. noise from the calibration database comes uncalibrated,
- // it needs to be calibrated in order to be added
- // to the signal. It will be decalibrated later on together with the noise
- noise *= (Double_t) res->GetGainP(ix);
-
- // noise comes in ADC channels from the calibration database
- // It needs to be converted back to electronVolts
- noise /= res->GetSSDDEvToADC(1.);
-
- // Finally, noise is added to the signal
- signal = noise + fMapA2->GetSignal(0,ix);//get signal from map
- fMapA2->SetHit(0,ix,signal); // give back signal to map
- if(signal>0.0) pList->AddNoise(0,ix,module,noise);
- } // loop over strip
-
- // Nside
- for(ix=0;ix<GetNStrips();ix++){ // loop over strips
- noise = (Double_t) gRandom->Gaus(0,res->GetNoiseN(ix));// give noise to signal
- noise *= (Double_t) res->GetGainN(ix);
- noise /= res->GetSSDDEvToADC(1.);
- signal = noise + fMapA2->GetSignal(1,ix);//get signal from map
- fMapA2->SetHit(1,ix,signal); // give back signal to map
- if(signal>0.0) pList->AddNoise(1,ix,module,noise);
- } // loop over strip
-
+ // Apply Noise.
+ Int_t ix;
+ Double_t signal,noise;
+ AliITSCalibrationSSD* res =(AliITSCalibrationSSD*)GetCalibrationModel(module);
+
+ // Pside
+ for(ix=0;ix<GetNStrips();ix++){ // loop over strips
+
+ // noise is gaussian
+ noise = (Double_t) gRandom->Gaus(0,res->GetNoiseP(ix));
+
+ // need to calibrate noise
+ // NOTE. noise from the calibration database comes uncalibrated,
+ // it needs to be calibrated in order to be added
+ // to the signal. It will be decalibrated later on together with the noise
+ noise *= (Double_t) res->GetGainP(ix);
+
+ // noise comes in ADC channels from the calibration database
+ // It needs to be converted back to electronVolts
+ noise /= res->GetSSDDEvToADC(1.);
+
+ // Finally, noise is added to the signal
+ signal = noise + fMapA2->GetSignal(0,ix);//get signal from map
+ fMapA2->SetHit(0,ix,signal); // give back signal to map
+ if(signal>0.0) pList->AddNoise(0,ix,module,noise);
+ } // loop over strip
+
+ // Nside
+ for(ix=0;ix<GetNStrips();ix++){ // loop over strips
+ noise = (Double_t) gRandom->Gaus(0,res->GetNoiseN(ix));// give noise to signal
+ noise *= (Double_t) res->GetGainN(ix);
+ noise /= res->GetSSDDEvToADC(1.);
+ signal = noise + fMapA2->GetSignal(1,ix);//get signal from map
+ fMapA2->SetHit(1,ix,signal); // give back signal to map
+ if(signal>0.0) pList->AddNoise(1,ix,module,noise);
+ } // loop over strip
+
}
//______________________________________________________________________
void AliITSsimulationSSD::ApplyCoupling(AliITSpList *pList,Int_t module) {
- // Apply the effect of electronic coupling between channels
- Int_t ix;
- Double_t signal=0;
- //AliITSCalibrationSSD* res =(AliITSCalibrationSSD*)GetCalibrationModel(module);
- AliITSSimuParam* res = fDetType->GetSimuParam();
-
- Double_t *contrLeft = new Double_t[GetNStrips()];
- Double_t *contrRight = new Double_t[GetNStrips()];
-
- // P side coupling
- for(ix=0;ix<GetNStrips();ix++){
- if(ix>0) contrLeft[ix] = fMapA2->GetSignal(0,ix-1)*res->GetSSDCouplingPL();
- else contrLeft[ix] = 0.0;
- if(ix<(GetNStrips()-1)) contrRight[ix] = fMapA2->GetSignal(0,ix+1)*res->GetSSDCouplingPR();
- else contrRight[ix] = 0.0;
- } // loop over strips
-
- for(ix=0;ix<GetNStrips();ix++){
- signal = contrLeft[ix] + contrRight[ix] - res->GetSSDCouplingPL() * fMapA2->GetSignal(0,ix)
- - res->GetSSDCouplingPR() * fMapA2->GetSignal(0,ix);
- fMapA2->AddSignal(0,ix,signal);
- if(signal>0.0) pList->AddNoise(0,ix,module,signal);
- } // loop over strips
-
- // N side coupling
- for(ix=0;ix<GetNStrips();ix++){
- if(ix>0) contrLeft[ix] = fMapA2->GetSignal(1,ix-1)*res->GetSSDCouplingNL();
- else contrLeft[ix] = 0.0;
- if(ix<(GetNStrips()-1)) contrRight[ix] = fMapA2->GetSignal(1,ix+1)*res->GetSSDCouplingNR();
- else contrRight[ix] = 0.0;
- } // loop over strips
-
- for(ix=0;ix<GetNStrips();ix++){
- signal = contrLeft[ix] + contrRight[ix] - res->GetSSDCouplingNL() * fMapA2->GetSignal(0,ix)
- - res->GetSSDCouplingNR() * fMapA2->GetSignal(0,ix);
- fMapA2->AddSignal(1,ix,signal);
- if(signal>0.0) pList->AddNoise(1,ix,module,signal);
- } // loop over strips
-
-
- delete [] contrLeft;
- delete [] contrRight;
+ // Apply the effect of electronic coupling between channels
+ Int_t ix;
+ Double_t signal=0;
+ //AliITSCalibrationSSD* res =(AliITSCalibrationSSD*)GetCalibrationModel(module);
+ AliITSSimuParam* res = fDetType->GetSimuParam();
+
+ Double_t *contrLeft = new Double_t[GetNStrips()];
+ Double_t *contrRight = new Double_t[GetNStrips()];
+
+ // P side coupling
+ for(ix=0;ix<GetNStrips();ix++){
+ if(ix>0) contrLeft[ix] = fMapA2->GetSignal(0,ix-1)*res->GetSSDCouplingPL();
+ else contrLeft[ix] = 0.0;
+ if(ix<(GetNStrips()-1)) contrRight[ix] = fMapA2->GetSignal(0,ix+1)*res->GetSSDCouplingPR();
+ else contrRight[ix] = 0.0;
+ } // loop over strips
+
+ for(ix=0;ix<GetNStrips();ix++){
+ signal = contrLeft[ix] + contrRight[ix] - res->GetSSDCouplingPL() * fMapA2->GetSignal(0,ix)
+ - res->GetSSDCouplingPR() * fMapA2->GetSignal(0,ix);
+ fMapA2->AddSignal(0,ix,signal);
+ if(signal>0.0) pList->AddNoise(0,ix,module,signal);
+ } // loop over strips
+
+ // N side coupling
+ for(ix=0;ix<GetNStrips();ix++){
+ if(ix>0) contrLeft[ix] = fMapA2->GetSignal(1,ix-1)*res->GetSSDCouplingNL();
+ else contrLeft[ix] = 0.0;
+ if(ix<(GetNStrips()-1)) contrRight[ix] = fMapA2->GetSignal(1,ix+1)*res->GetSSDCouplingNR();
+ else contrRight[ix] = 0.0;
+ } // loop over strips
+
+ for(ix=0;ix<GetNStrips();ix++){
+ signal = contrLeft[ix] + contrRight[ix] - res->GetSSDCouplingNL() * fMapA2->GetSignal(0,ix)
+ - res->GetSSDCouplingNR() * fMapA2->GetSignal(0,ix);
+ fMapA2->AddSignal(1,ix,signal);
+ if(signal>0.0) pList->AddNoise(1,ix,module,signal);
+ } // loop over strips
+
+
+ delete [] contrLeft;
+ delete [] contrRight;
}
//______________________________________________________________________
void AliITSsimulationSSD::ApplyDeadChannels(Int_t module) {
- // Kill dead channels setting gain to zero
+ // Kill dead channels setting gain to zero
- AliITSCalibrationSSD* res = (AliITSCalibrationSSD*)GetCalibrationModel(module);
+ AliITSCalibrationSSD* res = (AliITSCalibrationSSD*)GetCalibrationModel(module);
- for(Int_t i=0;i<GetNStrips();i++){
+ for(Int_t i=0;i<GetNStrips();i++){
- if(res->IsPChannelBad(i)) res->SetGainP(i,0.0);
- if(res->IsNChannelBad(i)) res->SetGainN(i,0.0);
+ if(res->IsPChannelBad(i)) res->SetGainP(i,0.0);
+ if(res->IsNChannelBad(i)) res->SetGainN(i,0.0);
- } // loop over strips
+ } // loop over strips
}
//______________________________________________________________________
Float_t AliITSsimulationSSD::F(Float_t av, Float_t x, Float_t s) {
- // Computes the integral of a gaussian using Error Function
- Float_t sqrt2 = TMath::Sqrt(2.0);
- Float_t sigm2 = sqrt2*s;
- Float_t integral;
+ // Computes the integral of a gaussian using Error Function
+ Float_t sqrt2 = TMath::Sqrt(2.0);
+ Float_t sigm2 = sqrt2*s;
+ Float_t integral;
- integral = 0.5 * TMath::Erf( (x - av) / sigm2);
- return integral;
+ integral = 0.5 * AliMathBase::ErfFast( (x - av) / sigm2);
+ return integral;
}
//______________________________________________________________________
void AliITSsimulationSSD::IntegrateGaussian(Int_t k,Double_t par, Double_t w,
- Double_t sigma,
- Double_t inf, Double_t sup,
- AliITSTableSSD *tav) {
- // integrate the diffusion gaussian
- // remind: inf and sup are w-3sigma and w+3sigma
- // we could define them here instead of passing them
- // this way we are free to introduce asimmetry
-
- Double_t a=0.0, b=0.0;
- Double_t dXCharge1 = 0.0, dXCharge2 = 0.0;
- // dXCharge1 and 2 are the charge to two neighbouring strips
- // Watch that we only involve at least two strips
- // Numbers greater than 2 of strips in a cluster depend on
- // geometry of the track and delta rays, not charge diffusion!
-
- Double_t strip = TMath::Floor(w); // closest strip on the left
-
- if ( TMath::Abs((strip - w)) < 0.5) {
- // gaussian mean is closer to strip on the left
- a = inf; // integration starting point
- if((strip+0.5)<=sup) {
- // this means that the tail of the gaussian goes beyond
- // the middle point between strips ---> part of the signal
- // is given to the strip on the right
- b = strip + 0.5; // integration stopping point
- dXCharge1 = F( w, b, sigma) - F(w, a, sigma);
- dXCharge2 = F( w, sup, sigma) - F(w ,b, sigma);
- }else {
- // this means that all the charge is given to the strip on the left
- b = sup;
- dXCharge1 = 0.9973; // gaussian integral at 3 sigmas
- dXCharge2 = 0.0;
- } // end if
- dXCharge1 = par * dXCharge1;// normalize by mean of number of carriers
- dXCharge2 = par * dXCharge2;
-
- // for the time being, signal is the charge
- // in ChargeToSignal signal is converted in ADC channel
- fMapA2->AddSignal(k,(Int_t)strip,dXCharge1);
- tav->Add(k,(Int_t)strip);
- if(((Int_t) strip) < (GetNStrips()-1)) {
- // strip doesn't have to be the last (remind: last=GetNStrips()-1)
- // otherwise part of the charge is lost
- fMapA2->AddSignal(k,((Int_t)strip+1),dXCharge2);
- tav->Add(k,((Int_t)(strip+1)));
- } // end if
- }else{
- // gaussian mean is closer to strip on the right
- strip++; // move to strip on the rigth
- b = sup; // now you know where to stop integrating
- if((strip-0.5)>=inf) {
- // tail of diffusion gaussian on the left goes left of
- // middle point between strips
- a = strip - 0.5; // integration starting point
- dXCharge1 = F(w, b, sigma) - F(w, a, sigma);
- dXCharge2 = F(w, a, sigma) - F(w, inf, sigma);
- }else {
- a = inf;
- dXCharge1 = 0.9973; // gaussian integral at 3 sigmas
- dXCharge2 = 0.0;
- } // end if
- dXCharge1 = par * dXCharge1; // normalize by means of carriers
- dXCharge2 = par * dXCharge2;
- // for the time being, signal is the charge
- // in ChargeToSignal signal is converted in ADC channel
- fMapA2->AddSignal(k,(Int_t)strip,dXCharge1);
- tav->Add(k,(Int_t)strip);
- if(((Int_t) strip) > 0) {
- // strip doesn't have to be the first
- // otherwise part of the charge is lost
- fMapA2->AddSignal(k,((Int_t)strip-1),dXCharge2);
- tav->Add(k,((Int_t)(strip-1)));
- } // end if
- } // end if
+ Double_t sigma,
+ Double_t inf, Double_t sup,
+ AliITSTableSSD *tav) {
+ // integrate the diffusion gaussian
+ // remind: inf and sup are w-3sigma and w+3sigma
+ // we could define them here instead of passing them
+ // this way we are free to introduce asimmetry
+
+ Double_t a=0.0, b=0.0;
+ Double_t dXCharge1 = 0.0, dXCharge2 = 0.0;
+ // dXCharge1 and 2 are the charge to two neighbouring strips
+ // Watch that we only involve at least two strips
+ // Numbers greater than 2 of strips in a cluster depend on
+ // geometry of the track and delta rays, not charge diffusion!
+
+ Double_t strip = TMath::Floor(w); // closest strip on the left
+
+ if ( TMath::Abs((strip - w)) < 0.5) {
+ // gaussian mean is closer to strip on the left
+ a = inf; // integration starting point
+ if((strip+0.5)<=sup) {
+ // this means that the tail of the gaussian goes beyond
+ // the middle point between strips ---> part of the signal
+ // is given to the strip on the right
+ b = strip + 0.5; // integration stopping point
+ dXCharge1 = F( w, b, sigma) - F(w, a, sigma);
+ dXCharge2 = F( w, sup, sigma) - F(w ,b, sigma);
+ }else {
+ // this means that all the charge is given to the strip on the left
+ b = sup;
+ dXCharge1 = 0.9973; // gaussian integral at 3 sigmas
+ dXCharge2 = 0.0;
+ } // end if
+ dXCharge1 = par * dXCharge1;// normalize by mean of number of carriers
+ dXCharge2 = par * dXCharge2;
+
+ // for the time being, signal is the charge
+ // in ChargeToSignal signal is converted in ADC channel
+ fMapA2->AddSignal(k,(Int_t)strip,dXCharge1);
+ tav->Add(k,(Int_t)strip);
+ if(((Int_t) strip) < (GetNStrips()-1)) {
+ // strip doesn't have to be the last (remind: last=GetNStrips()-1)
+ // otherwise part of the charge is lost
+ fMapA2->AddSignal(k,((Int_t)strip+1),dXCharge2);
+ tav->Add(k,((Int_t)(strip+1)));
+ } // end if
+ }else{
+ // gaussian mean is closer to strip on the right
+ strip++; // move to strip on the rigth
+ b = sup; // now you know where to stop integrating
+ if((strip-0.5)>=inf) {
+ // tail of diffusion gaussian on the left goes left of
+ // middle point between strips
+ a = strip - 0.5; // integration starting point
+ dXCharge1 = F(w, b, sigma) - F(w, a, sigma);
+ dXCharge2 = F(w, a, sigma) - F(w, inf, sigma);
+ }else {
+ a = inf;
+ dXCharge1 = 0.9973; // gaussian integral at 3 sigmas
+ dXCharge2 = 0.0;
+ } // end if
+ dXCharge1 = par * dXCharge1; // normalize by means of carriers
+ dXCharge2 = par * dXCharge2;
+ // for the time being, signal is the charge
+ // in ChargeToSignal signal is converted in ADC channel
+ fMapA2->AddSignal(k,(Int_t)strip,dXCharge1);
+ tav->Add(k,(Int_t)strip);
+ if(((Int_t) strip) > 0) {
+ // strip doesn't have to be the first
+ // otherwise part of the charge is lost
+ fMapA2->AddSignal(k,((Int_t)strip-1),dXCharge2);
+ tav->Add(k,((Int_t)(strip-1)));
+ } // end if
+ } // end if
}
//______________________________________________________________________
Int_t AliITSsimulationSSD::NumOfSteps(Double_t x, Double_t y, Double_t z,
- Double_t &dex,Double_t &dey,
- Double_t &dez){
- // number of steps
- // it also returns steps for each coord
- //AliITSsegmentationSSD *seg = new AliITSsegmentationSSD();
-
- Double_t step = 25E-4;
- //step = (Double_t) seg->GetStepSize(); // step size (cm)
- Int_t numOfSteps = (Int_t) (TMath::Sqrt(x*x+y*y+z*z)/step);
-
- if (numOfSteps < 1) numOfSteps = 1; // one step, at least
- //numOfSteps=1;
-
- // we could condition the stepping depending on the incident angle
- // of the track
- dex = x/numOfSteps;
- dey = y/numOfSteps;
- dez = z/numOfSteps;
-
- return numOfSteps;
+ Double_t &dex,Double_t &dey,
+ Double_t &dez){
+ // number of steps
+ // it also returns steps for each coord
+ //AliITSsegmentationSSD *seg = new AliITSsegmentationSSD();
+
+ Double_t step = 25E-4;
+ //step = (Double_t) seg->GetStepSize(); // step size (cm)
+ Int_t numOfSteps = (Int_t) (TMath::Sqrt(x*x+y*y+z*z)/step);
+
+ if (numOfSteps < 1) numOfSteps = 1; // one step, at least
+ //numOfSteps=1;
+
+ // we could condition the stepping depending on the incident angle
+ // of the track
+ dex = x/numOfSteps;
+ dey = y/numOfSteps;
+ dez = z/numOfSteps;
+
+ return numOfSteps;
}
//----------------------------------------------------------------------
void AliITSsimulationSSD::GetList(Int_t label,Int_t hit,Int_t mod,
- AliITSpList *pList,AliITSTableSSD *tav) {
- // loop over nonzero digits
- Int_t ix,i;
- Double_t signal=0.;
-
- for(Int_t k=0; k<2; k++) {
- ix=tav->Use(k);
- while(ix>-1){
- signal = fMapA2->GetSignal(k,ix);
- if(signal==0.0) {
- ix=tav->Use(k);
- continue;
- } // end if signal==0.0
- // check the signal magnitude
- for(i=0;i<pList->GetNSignals(k,ix);i++){
- signal -= pList->GetTSignal(k,ix,i);
- } // end for i
- // compare the new signal with already existing list
- if(signal>0)pList->AddSignal(k,ix,label,hit,mod,signal);
- ix=tav->Use(k);
- } // end of loop on strips
- } // end of loop on P/N side
- tav->Clear();
+ AliITSpList *pList,AliITSTableSSD *tav) {
+ // loop over nonzero digits
+ Int_t ix,i;
+ Double_t signal=0.;
+
+ for(Int_t k=0; k<2; k++) {
+ ix=tav->Use(k);
+ while(ix>-1){
+ signal = fMapA2->GetSignal(k,ix);
+ if(signal==0.0) {
+ ix=tav->Use(k);
+ continue;
+ } // end if signal==0.0
+ // check the signal magnitude
+
for(i=0;i<pList->GetNSignals(k,ix);i++){
+ signal -= pList->GetTSignal(k,ix,i);
+ } // end for i
+ // compare the new signal with already existing list
+ if(signal>0)pList->AddSignal(k,ix,label,hit,mod,signal);
+ ix=tav->Use(k);
+ } // end of loop on strips
+ } // end of loop on P/N side
+ tav->Clear();
}
//----------------------------------------------------------------------
-void AliITSsimulationSSD::ChargeToSignal(Int_t module,AliITSpList *pList) {
- // charge to signal
- static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
- Float_t threshold = 0.;
- Int_t size = AliITSdigitSSD::GetNTracks();
- Int_t * digits = new Int_t[size];
- Int_t * tracks = new Int_t[size];
- Int_t * hits = new Int_t[size];
- Int_t j1;
- Float_t charges[3] = {0.0,0.0,0.0};
- Float_t signal;
- AliITSCalibrationSSD* res =(AliITSCalibrationSSD*)GetCalibrationModel(module);
- AliITSSimuParam* simpar = fDetType->GetSimuParam();
-
- for(Int_t k=0;k<2;k++){ // both sides (0=Pside, 1=Nside)
- for(Int_t ix=0;ix<GetNStrips();ix++){ // loop over strips
+void AliITSsimulationSSD::ChargeToSignal(Int_t module,const AliITSpList *pList) {
+ // charge to signal
+ static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
+ Float_t threshold = 0.;
+ Int_t size = AliITSdigitSSD::GetNTracks();
+ Int_t * digits = new Int_t[size];
+ Int_t * tracks = new Int_t[size];
+ Int_t * hits = new Int_t[size];
+ Int_t j1;
+ Float_t charges[3] = {0.0,0.0,0.0};
+ Float_t signal;
+ AliITSCalibrationSSD* res =(AliITSCalibrationSSD*)GetCalibrationModel(module);
+ AliITSSimuParam* simpar = fDetType->GetSimuParam();
+
+ for(Int_t k=0;k<2;k++){ // both sides (0=Pside, 1=Nside)
+ for(Int_t ix=0;ix<GetNStrips();ix++){ // loop over strips
// if strip is dead -> gain=0
if( ((k==0)&&(res->GetGainP(ix)==0)) || ((k==1)&&(res->GetGainN(ix)==0))) continue;
// signal is converted in unit of ADC
signal = res->GetSSDDEvToADC(signal);
- if(signal>4096.) signal = 4096.;//if exceeding, accumulate last one
+ if(signal>4095.) signal = 4095.;//if exceeding, accumulate last one
// threshold for zero suppression is set on the basis of the noise
// A good value is 3*sigma_noise
} // end for j1
// finally add digit
aliITS->AddSimDigit(2,0,digits,tracks,hits,charges);
- } // end for ix
- } // end for k
- delete [] digits;
- delete [] tracks;
- delete [] hits;
+ } // end for ix
+ } // end for k
+ delete [] digits;
+ delete [] tracks;
+ delete [] hits;
}
//______________________________________________________________________
void AliITSsimulationSSD::WriteSDigits(AliITSpList *pList){
- // Fills the Summable digits Tree
- 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(4)) cout << "pListSSD: "<<*(pList->GetpListItem(i,j))
- << endl;
- } // end if
- } // end for i,j
- return;
+ // Fills the Summable digits Tree
+ 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(4)) cout << "pListSSD: "<<*(pList->GetpListItem(i,j))
+ << endl;
+ } // end if
+ } // end for i,j
+ return;
}
//______________________________________________________________________
void AliITSsimulationSSD::FillMapFrompList(AliITSpList *pList){
- // Fills fMap2A from the pList of Summable digits
- Int_t k,ix;
+ // Fills fMap2A from the pList of Summable digits
+ Int_t k,ix;
- for(k=0;k<2;k++)for(ix=0;ix<GetNStrips();ix++)
- fMapA2->AddSignal(k,ix,pList->GetSignal(k,ix));
- return;
+ for(k=0;k<2;k++)for(ix=0;ix<GetNStrips();ix++)
+ fMapA2->AddSignal(k,ix,pList->GetSignal(k,ix));
+ return;
}
//______________________________________________________________________
void AliITSsimulationSSD::Print(ostream *os){
- //Standard output format for this class
-
- //AliITSsimulation::Print(os);
- *os << fIonE <<",";
- *os << fDifConst[0] <<","<< fDifConst[1] <<",";
- *os << fDriftVel[0] <<","<< fDriftVel[1];
- //*os <<","; fDCS->Print(os);
- //*os <<","; fMapA2->Print(os);
+ //Standard output format for this class
+
+ //AliITSsimulation::Print(os);
+ *os << fIonE <<",";
+ *os << fDifConst[0] <<","<< fDifConst[1] <<",";
+ *os << fDriftVel[0] <<","<< fDriftVel[1];
+ //*os <<","; fDCS->Print(os);
+ //*os <<","; fMapA2->Print(os);
}
//______________________________________________________________________
void AliITSsimulationSSD::Read(istream *is){
- // Standard output streaming function.
-
- //AliITSsimulation::Read(is);
- *is >> fIonE;
- *is >> fDifConst[0] >> fDifConst[1];
- *is >> fDriftVel[0] >> fDriftVel[1];
- //fDCS->Read(is);
- //fMapA2->Read(is);
+ // Standard output streaming function.
+
+ //AliITSsimulation::Read(is);
+ *is >> fIonE;
+ *is >> fDifConst[0] >> fDifConst[1];
+ *is >> fDriftVel[0] >> fDriftVel[1];
+ //fDCS->Read(is);
+ //fMapA2->Read(is);
}
//______________________________________________________________________
ostream &operator<<(ostream &os,AliITSsimulationSSD &source){
- // Standard output streaming function.
+ // Standard output streaming function.
- source.Print(&os);
- return os;
+ source.Print(&os);
+ return os;
}
//______________________________________________________________________
istream &operator>>(istream &os,AliITSsimulationSSD &source){
- // Standard output streaming function.
+ // Standard output streaming function.
- source.Read(&os);
- return os;
+ source.Read(&os);
+ return os;
}
//______________________________________________________________________
+
+
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff