* provided "as is" without express or implied warranty. *
**************************************************************************/
+/* $Id$ */
+
//_________________________________________________________________________
// This is a TTask that made the calculation of the Time zero using TOF.
// Description: The algorithm used to calculate the time zero of interaction
//-- Author: F. Pierella
//////////////////////////////////////////////////////////////////////////////
+#include <Riostream.h>
+#include <stdlib.h>
+
+#include <TBenchmark.h>
+#include <TCanvas.h>
+#include <TClonesArray.h>
+#include <TFile.h>
+#include <TFolder.h>
+#include <TFrame.h>
+#include <TH1.h>
+#include <TParticle.h>
+#include <TROOT.h>
+#include <TSystem.h>
+#include <TTask.h>
+#include <TTree.h>
+#include <TVirtualMC.h>
+
+#include "AliDetector.h"
+#include "AliRun.h"
+#include "AliTOF.h"
#include "AliTOFT0.h"
#include "AliTOFhitT0.h"
-#include "AliTOF.h"
#include "AliTOFv4T0.h"
-#include "AliRun.h"
-#include "AliDetector.h"
#include "AliMC.h"
-#include "TH1.h"
-#include "TFile.h"
-#include "TTask.h"
-#include "TTree.h"
-#include "TSystem.h"
-#include "TCanvas.h"
-#include "TFrame.h"
-#include "TROOT.h"
-#include "TFolder.h"
-#include "TBenchmark.h"
-#include "TParticle.h"
-#include "TClonesArray.h"
-#include <stdlib.h>
-#include <iostream.h>
-#include <fstream.h>
-#include <iomanip.h>
-
ClassImp(AliTOFT0)
//____________________________________________________________________________
AliTOFT0::AliTOFT0():TTask("AliTOFT0","")
{
// ctor
- fNevents = 0 ;
- fHits = 0 ;
-
+ fNevents = 0 ;
}
//____________________________________________________________________________
fUpperMomBound=2. ; // [GeV/c] default value
fTimeResolution = 1.2e-10; // 120 ps by default
fHeadersFile = headerFile ;
- fHits = 0 ;
TFile * file = (TFile*) gROOT->GetFile(fHeadersFile.Data() ) ;
roottasks->Add(this) ;
}
+//____________________________________________________________________________
+ AliTOFT0::AliTOFT0(const AliTOFT0 & tzero):TTask("AliTOFT0","")
+{
+( (AliTOFT0 &)tzero ).Copy(*this);
+}
+
//____________________________________________________________________________
AliTOFT0::~AliTOFT0()
{
for (Int_t ievent = 0; ievent < fNevents; ievent++) {
gAlice->GetEvent(ievent);
- TTree *TH = gAlice->TreeH ();
+ TTree *TH = TOF->TreeH ();
if (!TH)
return;
TParticle* particle;
Int_t lasttrack=-1;
Int_t nset=0;
+
+ TH->SetBranchStatus("*",0); // switch off all branches
+ TH->SetBranchStatus("TOF*",1); // switch on only TOF
+
// Start loop on primary tracks in the hits containers
Int_t ntracks = static_cast<Int_t>(TH->GetEntries());
gAlice->ResetHits();
TH->GetEvent(track);
- particle = gAlice->Particle(track);
+ particle = gAlice->GetMCApp()->Particle(track);
Int_t nhits = TOFhits->GetEntriesFast();
for (Int_t hit = 0; hit < nhits; hit++)
if (ipart != ipartold){
- particle = (TParticle*)gAlice->Particle(ipart);
+ particle = (TParticle*)gAlice->GetMCApp()->Particle(ipart);
Float_t idealtime=tofHit->GetTof();
// Float_t time=idealtime;
selected=0;
//cout << "starting t0 calculation for current set" << endl;
for (Int_t i1=0; i1<3;i1++) {
+ beta[0]=momentum[0]/sqrt(massarray[i1]*massarray[i1]+momentum[0]*momentum[0]);
for (Int_t i2=0; i2<3;i2++) {
+ beta[1]=momentum[1]/sqrt(massarray[i2]*massarray[i2]+momentum[1]*momentum[1]);
for (Int_t i3=0; i3<3;i3++) {
+ beta[2]=momentum[2]/sqrt(massarray[i3]*massarray[i3]+momentum[2]*momentum[2]);
for (Int_t i4=0; i4<3;i4++) {
+ beta[3]=momentum[3]/sqrt(massarray[i4]*massarray[i4]+momentum[3]*momentum[3]);
for (Int_t i5=0; i5<3;i5++) {
+ beta[4]=momentum[4]/sqrt(massarray[i5]*massarray[i5]+momentum[4]*momentum[4]);
for (Int_t i6=0; i6<3;i6++) {
+ beta[5]=momentum[5]/sqrt(massarray[i6]*massarray[i6]+momentum[5]*momentum[5]);
for (Int_t i7=0; i7<3;i7++) {
+ beta[6]=momentum[6]/sqrt(massarray[i7]*massarray[i7]+momentum[6]*momentum[6]);
for (Int_t i8=0; i8<3;i8++) {
+ beta[7]=momentum[7]/sqrt(massarray[i8]*massarray[i8]+momentum[7]*momentum[7]);
for (Int_t i9=0; i9<3;i9++) {
+ beta[8]=momentum[8]/sqrt(massarray[i9]*massarray[i9]+momentum[8]*momentum[8]);
for (Int_t i10=0; i10<3;i10++) {
-
- beta[0]=momentum[0]/sqrt(massarray[i1]*massarray[i1]+momentum[0]*momentum[0]);
- beta[1]=momentum[1]/sqrt(massarray[i2]*massarray[i2]+momentum[1]*momentum[1]);
- beta[2]=momentum[2]/sqrt(massarray[i3]*massarray[i3]+momentum[2]*momentum[2]);
- beta[3]=momentum[3]/sqrt(massarray[i4]*massarray[i4]+momentum[3]*momentum[3]);
- beta[4]=momentum[4]/sqrt(massarray[i5]*massarray[i5]+momentum[4]*momentum[4]);
- beta[5]=momentum[5]/sqrt(massarray[i6]*massarray[i6]+momentum[5]*momentum[5]);
- beta[6]=momentum[6]/sqrt(massarray[i7]*massarray[i7]+momentum[6]*momentum[6]);
- beta[7]=momentum[7]/sqrt(massarray[i8]*massarray[i8]+momentum[7]*momentum[7]);
- beta[8]=momentum[8]/sqrt(massarray[i9]*massarray[i9]+momentum[8]*momentum[8]);
beta[9]=momentum[9]/sqrt(massarray[i10]*massarray[i10]+momentum[9]*momentum[9]);
-
Float_t meantzero=0.;
Float_t sumAllweights=0.;
for (Int_t itz=0; itz<10;itz++) {
sqMomError[itz]=((1.-beta[itz]*beta[itz])*0.025)*((1.-beta[itz]*beta[itz])*0.025)*(tracktoflen[itz]/(0.299792*beta[itz]))*(tracktoflen[itz]/(0.299792*beta[itz])); // this gives the square of the momentum error in nanoseconds
sqTrackError[itz]=(timeresolutioninns*timeresolutioninns+sqMomError[itz]); // total error for the current track
sumAllweights+=1./sqTrackError[itz];
- // redefining beta, it is useful in order to calculate t zero
- beta[itz]*=0.299792;
- timezero[itz]=(tracktoflen[itz]/beta[itz])-timeofflight[itz];
- weightedtimezero[itz]=((tracktoflen[itz]/beta[itz])-timeofflight[itz])/sqTrackError[itz];// weighted time zero for current track
+
+ timezero[itz]=(tracktoflen[itz]/(beta[itz]*0.299792))-timeofflight[itz];
+ weightedtimezero[itz]=((tracktoflen[itz]/(beta[itz]*0.299792))-timeofflight[itz])/sqTrackError[itz];// weighted time zero for current track
meantzero+=weightedtimezero[itz];
} // end loop for (Int_t itz=0; itz<10;itz++)
meantzero=meantzero/sumAllweights; // it is given in [ns]
fT0File=file;
}
//__________________________________________________________________
-void AliTOFT0::Print(Option_t* option)const
+void AliTOFT0::Print(Option_t* /*option*/)const
{
cout << "------------------- "<< GetName() << " -------------" << endl ;
if(!fT0File.IsNull())
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff