-/*
- Macro to make the MC based dEdx fits, and study the influence of thre track selection to the PID.
-
- Motivation:
- In the ALICE Geant3 MC the input Bethe-Bloch parameterization of the primary ionization can be
- parameterized by user defined formula.
-
- In detector Input dEdx(BG)_in} (more exact dNprim/dx) is transformed to the output reconstructed dEdx_{rec}.
- While original input function is just function of particle \beta\gama, random variable, reconstructed
- dEdx estimate, is influenced by detection processes and is sensitive to other aspects namily
- diffusion, track inclination angle (\phi,\theta), gain ...
-
- In the following we will calibrate transform function:
- dEdx_{BB}= f_{tr}(dEdx_{rec}, #phi,#eta)
- //
- // Example code for author:
- //
- .x $HOME/rootlogon.C
- .x $HOME/NimStyle.C
- .L $ALICE_ROOT/TPC/macros/data2011/makeBBFit.C+
- Init();
- MakeESDCutsPID();
- makeBBfit(10000000);
-
-*/
+/// \file makeBBFit.C
+/// \brief Macro to make the MC based dEdx fits, and study the influence of thre track selection to the PID.
+///
+/// Motivation
+/// ----------
+/// In the ALICE Geant3 MC the input Bethe-Bloch parameterization of the primary ionization can be
+/// parameterized by user defined formula.
+///
+/// In detector Input \f$ dE/dx(BG)_{in} \f$ (more exact \f$ dN_{prim}/dx \f$) is transformed to the output reconstructed \f$ dE/dx_{rec} \f$.
+/// While original input function is just function of particle \beta\gama, random variable, reconstructed
+/// dEdx estimate, is influenced by detection processes and is sensitive to other aspects namily
+/// diffusion, track inclination angle (\f$\phi\f$,\f$\theta\f$), gain ...
+///
+/// In the following we will calibrate transform function:
+/// \f[
+/// \frac{dE}{dx}_{BB}= f_{tr}\left(\frac{dE}{dx}_{rec}, \phi, \eta\right)
+/// \f]
+///
+/// Example code for author:
+/// ~~~{.cpp}
+/// .x $HOME/rootlogon.C
+/// .x $HOME/NimStyle.C
+/// .L $ALICE_ROOT/TPC/macros/data2011/makeBBFit.C+
+/// Init();
+/// MakeESDCutsPID();
+/// makeBBfit(10000000);
+/// ~~~
#include "TCut.h"
#include "TFile.h"
void FitTransferFunctionAll(Bool_t isMax, Int_t dType, Bool_t skipKaon, Double_t maxP, TTreeSRedirector *pcstream, Bool_t doDraw);
void Init(){
- //
- // 1.) Register default ALICE parametrization
- //
+ /// 1.) Register default ALICE parametrization
+
AliTPCParam param;
param.RegisterBBParam(param.GetBetheBlochParamAlice(),1);
for (Int_t ihis=0; ihis<4; ihis++) massPDG [ihis]= TDatabasePDG::Instance()->GetParticle(pdgs[ihis])->Mass();
void MakeESDCutsPID(Double_t fgeom=1, Double_t fcr=0.85, Double_t fcl=0.7 ){
- //
- // Cuts to be used in the sequenece
- // 1.) cutGeom - stronger cut on geometry - perfect agreement data-MC
- // - Default length factor 1
- // 2.) cutNcr - relativally stong cut on the number of crossed rows to gaurantee tracking performance
- // relativally good agrement in the MC except of the week decay propability
- // - Default length factor 0.85
- // 3.) cutNcl - very week cut on the numebr of clusters
- // - Default length factor 0.7
- //
- // Combined cuts should be combination:
- // cutGeom+cutNcr+cutNcl
- // Default factors 1, 0.85 and 0.7 should be suited for most of analysis
- // Modification can be expected for the Jet analysis and further tuning of the parameters for the
- // relativistic PID analysis
- //
+ /// Cuts to be used in the sequenece
+ /// 1.) cutGeom - stronger cut on geometry - perfect agreement data-MC
+ /// - Default length factor 1
+ /// 2.) cutNcr - relativally stong cut on the number of crossed rows to gaurantee tracking performance
+ /// relativally good agrement in the MC except of the week decay propability
+ /// - Default length factor 0.85
+ /// 3.) cutNcl - very week cut on the numebr of clusters
+ /// - Default length factor 0.7
+ ///
+ /// Combined cuts should be combination:
+ /// cutGeom+cutNcr+cutNcl
+ /// Default factors 1, 0.85 and 0.7 should be suited for most of analysis
+ /// Modification can be expected for the Jet analysis and further tuning of the parameters for the
+ /// relativistic PID analysis
+
cutGeom=TString::Format("esdTrack.GetLengthInActiveZone(0,3,236, -5 ,0,0)> %f*(130-5*abs(esdTrack.fP[4]))",fgeom);
// Geomtrical cut in fiducial volume - proper description in the MC
// GetLengthInActiveZone(Int_t mode, Double_t deltaY, Double_t deltaZ, Double_t bz, Double_t exbPhi = 0, TTreeSRedirector* pcstream = 0) const
}
void makeBBfit(Int_t ntracks=100000){
- //
- // Make dEdx fits of indiviadual particle species in bins:
- // a.) momenta
- // b.) tan(theta) -tgl
- // c.) per detector segmen
- // d.) Qmax/Qtot
+ /// Make dEdx fits of indiviadual particle species in bins:
+ /// a.) momenta
+ /// b.) tan(theta) -tgl
+ /// c.) per detector segmen
+ /// d.) Qmax/Qtot
+
TFile * ff = TFile::Open("Filtered.root");
TTreeSRedirector *pcstream = new TTreeSRedirector("dedxFit.root","update");
TTree * treeMC = (TTree*)ff->Get("highPt");
void FitTransferFunctionScanAll(){
- //
- // Make fit of transfer functions - parabolic in theta
- //
+ /// Make fit of transfer functions - parabolic in theta
+
TTreeSRedirector * pcstream = new TTreeSRedirector("dedxFit.root","update");
treeFit=(TTree*)pcstream->GetFile()->Get("fitdEdxG");
treeFit = (TTree*)pcstream->GetFile()->Get("fitdEdxG");
void FitTransferFunctionScanTheta(){
- //
- // Make fit of transfer functions - bin by bin in Theta
- //
+ /// Make fit of transfer functions - bin by bin in Theta
+
TTreeSRedirector * pcstream = new TTreeSRedirector("dedxFit.root","update");
treeFit=(TTree*)pcstream->GetFile()->Get("fitdEdxG");
treeFit = (TTree*)pcstream->GetFile()->Get("fitdEdxG");
void FitTransferFunctionTheta(Bool_t isMax, Int_t dType, Int_t tgl, Bool_t skipKaon, Double_t maxP, TTreeSRedirector *pcstream, Bool_t doDraw){
- //
- //
- // dEdx_{BB}= f_{tr}(dEdx_{rec}, #phi,#eta)
- //
- // Fit the parematers of transfer function
- // 4 models of transfer function used:
- //
- //
- // Example usage:
- // FitTransferFunctionTheta(1,3,8,1,5,0)
- // isMax=1; dType=1; tgl=5; skipKaon=0; Double_t maxP=10
- //
+ /// dEdx_{BB}= f_{tr}(dEdx_{rec}, #phi,#eta)
+ ///
+ /// Fit the parematers of transfer function
+ /// 4 models of transfer function used:
+ ///
+ /// Example usage:
+ /// FitTransferFunctionTheta(1,3,8,1,5,0)
+ /// isMax=1; dType=1; tgl=5; skipKaon=0; Double_t maxP=10
+
if (!pcstream) pcstream = new TTreeSRedirector("dedxFit.root","update");
//
if (!treeFit){
//
//
void FitTransferFunctionAll(Bool_t isMax, Int_t dType, Bool_t skipKaon, Double_t maxP, TTreeSRedirector *pcstream, Bool_t doDraw){
- //
- //
- // dEdx_{BB}= f_{tr}(dEdx_{rec}, #phi,#eta)
- //
- // Example usage:
- // FitTransferFunctionAll(1,1,1,15,0,1)
- // isMax=1; dType=1; skipKaon=0; Double_t maxP=10
- //
+ /// dEdx_{BB}= f_{tr}(dEdx_{rec}, #phi,#eta)
+ ///
+ /// Example usage:
+ /// FitTransferFunctionAll(1,1,1,15,0,1)
+ /// isMax=1; dType=1; skipKaon=0; Double_t maxP=10
+
if (!pcstream) pcstream = new TTreeSRedirector("dedxFit.root","update");
//
if (!treeFit){
void DrawFit(){
- //
- //
- //
+ ///
+
TTreeSRedirector * pcstream = new TTreeSRedirector("dedxFit.root","update");
TTree * treeTheta=(TTree*)pcstream->GetFile()->Get("fitTheta");
treeTheta->SetMarkerStyle(25);
git://git.uio.no / u / mrichter / AliRoot.git / commitdiff