#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"
+using std::endl;
+using std::cout;
ClassImp(AliITSsimulationSSD)
////////////////////////////////////////////////////////////////////////
// //
fMapA2(0),
fIonE(0.0),
fDifConst(),
-fDriftVel(){
+fDriftVel(),
+fTimeResponse(NULL),
+fLorentz(kFALSE),
+fTanLorAngP(0),
+fTanLorAngN(0)
+{
//default Constructor
//Inputs:
// none.
fMapA2(0),
fIonE(0.0),
fDifConst(),
-fDriftVel(){
+fDriftVel(),
+fTimeResponse(NULL),
+fLorentz(kFALSE),
+fTanLorAngP(0),
+fTanLorAngN(0)
+{
// Constructor
// Input:
// AliITSDetTypeSim Pointer to the SSD dettype to be used
// Return
// A standard constructed AliITSsimulationSSD class
+ fTimeResponse = new TF1("ftimeresponse",".5*x*exp(1.-.5*x)");
Init();
}
//----------------------------------------------------------------------
// 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){
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;
}
/*
fMapA2(source.fMapA2),
fIonE(source.fIonE),
fDifConst(),
-fDriftVel(){
+fDriftVel(),
+fTimeResponse(source.fTimeResponse),
+fLorentz(source.fLorentz),
+fTanLorAngP(source.fTanLorAngP),
+fTanLorAngN(source.fTanLorAngN)
+{
// copy constructor
fDifConst[0] = source.fDifConst[0];
fDifConst[1] = source.fDifConst[1];
AliITSsimulationSSD::~AliITSsimulationSSD() {
// destructor
delete fMapA2;
+ delete fTimeResponse;
//delete fDCS;
}
//______________________________________________________________________
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);
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
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);
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);
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;
+
+ // 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
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
+ // sigma is the standard deviation of the diffusion gaussian
if(tdrift[k]<0) return;
sigma[k] = TMath::Sqrt(2*GetDiffConst(k)*tdrift[k]);
// 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]);
Float_t sigm2 = sqrt2*s;
Float_t integral;
- integral = 0.5 * TMath::Erf( (x - av) / sigm2);
+ integral = 0.5 * AliMathBase::ErfFast( (x - av) / sigm2);
return integral;
}
//______________________________________________________________________
tav->Clear();
}
//----------------------------------------------------------------------
-void AliITSsimulationSSD::ChargeToSignal(Int_t module,AliITSpList *pList) {
+void AliITSsimulationSSD::ChargeToSignal(Int_t module,const AliITSpList *pList) {
// charge to signal
static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
Float_t threshold = 0.;
// 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
-
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff