X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=EVGEN%2FAliGenParam.cxx;h=dac627bc70db9dc8549853647b94d6bc480823ea;hb=389a9124d1d9f3910f64e791aa4467df44dafd26;hp=39f3d9bfe5256ed974e22494d59e44d54c0a7d20;hpb=1242532da6084b962f45231389d02f3155769a93;p=u%2Fmrichter%2FAliRoot.git diff --git a/EVGEN/AliGenParam.cxx b/EVGEN/AliGenParam.cxx index 39f3d9bfe52..dac627bc70d 100644 --- a/EVGEN/AliGenParam.cxx +++ b/EVGEN/AliGenParam.cxx @@ -13,105 +13,7 @@ * provided "as is" without express or implied warranty. * **************************************************************************/ -/* -$Log$ -Revision 1.37 2002/04/17 10:20:44 morsch -Coding Rule violations corrected. - -Revision 1.36 2002/02/08 16:50:50 morsch -Add name and title in constructor. - -Revision 1.35 2002/01/21 10:02:40 morsch -ty is Double_t -Abort if too high rapidity causes numerical paroblem. User has to specify -meaningful y-range. - -Revision 1.34 2001/11/27 13:13:07 morsch -Maximum lifetime for long-lived particles to be put on the stack is parameter. -It can be set via SetMaximumLifetime(..). - -Revision 1.33 2001/10/21 18:35:56 hristov -Several pointers were set to zero in the default constructors to avoid memory management problems - -Revision 1.32 2001/07/27 17:09:36 morsch -Use local SetTrack, KeepTrack and SetHighWaterMark methods -to delegate either to local stack or to stack owned by AliRun. -(Piotr Skowronski, A.M.) - -Revision 1.31 2001/07/13 10:58:54 morsch -- Some coded moved to AliGenMC -- Improved handling of secondary vertices. - -Revision 1.30 2001/06/15 07:55:04 morsch -Put only first generation decay products on the stack. - -Revision 1.29 2001/03/27 10:58:41 morsch -Initialize decayer before generation. Important if run inside cocktail. - -Revision 1.28 2001/03/09 13:01:41 morsch -- enum constants for paramterisation type (particle family) moved to AliGen*lib.h -- use AliGenGSIlib::kUpsilon, AliGenPHOSlib::kEtaPrime to access the constants - -Revision 1.27 2001/02/02 15:21:10 morsch -Set high water mark after last particle. -Use Vertex() method for Vertex. - -Revision 1.26 2000/12/21 16:24:06 morsch -Coding convention clean-up - -Revision 1.25 2000/11/30 07:12:50 alibrary -Introducing new Rndm and QA classes - -Revision 1.24 2000/10/18 19:11:27 hristov -Division by zero fixed - -Revision 1.23 2000/10/02 21:28:06 fca -Removal of useless dependecies via forward declarations - -Revision 1.22 2000/09/12 14:14:55 morsch -Call fDecayer->ForceDecay() at the beginning of Generate(). - -Revision 1.21 2000/09/08 15:39:01 morsch -Handle the case fForceDecay=all during the generation, i.e. select all secondaries. - -Revision 1.20 2000/09/06 14:35:44 morsch -Use AliDecayerPythia for particle decays. - -Revision 1.19 2000/07/11 18:24:56 fca -Coding convention corrections + few minor bug fixes - -Revision 1.18 2000/06/29 21:08:27 morsch -All paramatrisation libraries derive from the pure virtual base class AliGenLib. -This allows to pass a pointer to a library directly to AliGenParam and avoids the -use of function pointers in Config.C. - -Revision 1.17 2000/06/09 20:33:30 morsch -All coding rule violations except RS3 corrected - -Revision 1.16 2000/05/02 07:51:31 morsch -- Control precision of pT sampling TF1::SetNpx(..) -- Correct initialisation of child-cuts in all constructors. -- Most coding rule violations corrected. - -Revision 1.15 2000/04/03 15:42:12 morsch -Cuts on primary particles are separated from those on the decay products. Methods -SetChildMomentumRange, SetChildPtRange, SetChildPhiRange, SetChildThetaRange added. - -Revision 1.14 1999/11/09 07:38:48 fca -Changes for compatibility with version 2.23 of ROOT - -Revision 1.13 1999/11/04 11:30:31 fca -Correct the logics for SetForceDecay - -Revision 1.12 1999/11/03 17:43:20 fca -New version from G.Martinez & A.Morsch - -Revision 1.11 1999/09/29 09:24:14 fca -Introduction of the Copyright and cvs Log - -*/ - - +/* $Id$ */ // Class to generate particles from using paramtrized pT and y distributions. // Distributions are obtained from pointer to object of type AliGenLib. @@ -119,16 +21,22 @@ Introduction of the Copyright and cvs Log // Decays are performed using Pythia. // andreas.morsch@cern.ch -#include "AliGenParam.h" -#include "AliDecayerPythia.h" -#include "AliGenMUONlib.h" -#include "AliRun.h" -#include -#include +#include #include +#include +#include #include +#include +#include +#include +#include +#include -#include +#include "AliDecayer.h" +#include "AliGenMUONlib.h" +#include "AliGenParam.h" +#include "AliMC.h" +#include "AliRun.h" ClassImp(AliGenParam) @@ -140,7 +48,6 @@ ClassImp(AliGenParam) */ //End_Html -//____________________________________________________________ //____________________________________________________________ AliGenParam::AliGenParam() { @@ -150,14 +57,11 @@ AliGenParam::AliGenParam() fParam = 0; fAnalog = kAnalog; SetDeltaPt(); -// -// Set random number generator - sRandom = fRandom; fDecayer = 0; } - +//____________________________________________________________ AliGenParam::AliGenParam(Int_t npart, AliGenLib * Library, Int_t param, char* tname):AliGenMC(npart) { // Constructor using number of particles parameterisation id and library @@ -174,19 +78,14 @@ AliGenParam::AliGenParam(Int_t npart, AliGenLib * Library, Int_t param, char* t fAnalog = kAnalog; SetForceDecay(); SetDeltaPt(); -// -// Set random number generator - sRandom = fRandom; } - //____________________________________________________________ - -AliGenParam::AliGenParam(Int_t npart, Int_t param, char* tname):AliGenMC(npart) +AliGenParam::AliGenParam(Int_t npart, Int_t param, const char* tname, const char* name):AliGenMC(npart) { // Constructor using parameterisation id and number of particles // - fName = "Param"; - fTitle= "Particle Generator using pT and y parameterisation"; + fName = name; + fTitle= "Particle Generator using pT and y parameterisation"; AliGenLib* pLibrary = new AliGenMUONlib(); @@ -208,6 +107,7 @@ AliGenParam::AliGenParam(Int_t npart, Int_t param, char* tname):AliGenMC(npart) SetChildThetaRange(); SetDeltaPt(); } +//____________________________________________________________ AliGenParam::AliGenParam(Int_t npart, Int_t param, Double_t (*PtPara) (Double_t*, Double_t*), @@ -241,8 +141,9 @@ AliGenParam::AliGenParam(Int_t npart, Int_t param, AliGenParam::AliGenParam(const AliGenParam & Param) + :AliGenMC(Param) { -// copy constructor +// Copy constructor Param.Copy(*this); } @@ -259,22 +160,33 @@ void AliGenParam::Init() { // Initialisation - fDecayer = new AliDecayerPythia(); + if (gMC) fDecayer = gMC->GetDecayer(); //Begin_Html /* */ //End_Html - - fPtPara = new TF1("Pt-Parametrization",fPtParaFunc,fPtMin,fPtMax,0); + char name[256]; + sprintf(name, "pt-parameterisation for %s", GetName()); + + if (fPtPara) fPtPara->Delete(); + fPtPara = new TF1(name, fPtParaFunc, fPtMin, fPtMax,0); + gROOT->GetListOfFunctions()->Remove(fPtPara); // Set representation precision to 10 MeV - Int_t npx= Int_t((fPtMax-fPtMin)/fDeltaPt); + Int_t npx= Int_t((fPtMax - fPtMin) / fDeltaPt); fPtPara->SetNpx(npx); + + sprintf(name, "y-parameterisation for %s", GetName()); + if (fYPara) fYPara->Delete(); + fYPara = new TF1(name, fYParaFunc, fYMin, fYMax, 0); + gROOT->GetListOfFunctions()->Remove(fYPara); + - fYPara = new TF1("Y -Parametrization",fYParaFunc,fYMin,fYMax,0); - TF1* ptPara = new TF1("Pt-Parametrization",fPtParaFunc,0,15,0); - TF1* yPara = new TF1("Y -Parametrization",fYParaFunc,-6,6,0); + sprintf(name, "pt-for-%s", GetName()); + TF1 ptPara(name ,fPtParaFunc, 0, 15, 0); + sprintf(name, "y-for-%s", GetName()); + TF1 yPara(name, fYParaFunc, -6, 6, 0); // // dN/dy| y=0 @@ -284,9 +196,9 @@ void AliGenParam::Init() fdNdy0=fYParaFunc(&y1,&y2); // // Integral over generation region - Float_t intYS = yPara ->Integral(fYMin, fYMax); - Float_t intPt0 = ptPara->Integral(0,15); - Float_t intPtS = ptPara->Integral(fPtMin,fPtMax); + Float_t intYS = yPara.Integral(fYMin, fYMax,(Double_t*) 0x0,1.e-6); + Float_t intPt0 = ptPara.Integral(0,15,(Double_t *) 0x0,1.e-6); + Float_t intPtS = ptPara.Integral(fPtMin,fPtMax,(Double_t*) 0x0,1.e-6); Float_t phiWgt=(fPhiMax-fPhiMin)/2./TMath::Pi(); if (fAnalog == kAnalog) { fYWgt = intYS/fdNdy0; @@ -321,7 +233,9 @@ void AliGenParam::Generate() // // // Reinitialize decayer - fDecayer->Init(); + fDecayer->SetForceDecay(fForceDecay); + fDecayer->Init(); + // Float_t polar[3]= {0,0,0}; // Polarisation of the parent particle (for GEANT tracking) Float_t origin0[3]; // Origin of the generated parent particle (for GEANT tracking) @@ -337,8 +251,7 @@ void AliGenParam::Generate() // if(!particles) particles = new TClonesArray("TParticle",1000); - static TDatabasePDG *pDataBase = new TDatabasePDG(); - if(!pDataBase) pDataBase = new TDatabasePDG(); + TDatabasePDG *pDataBase = TDatabasePDG::Instance(); // Float_t random[6]; @@ -355,7 +268,7 @@ void AliGenParam::Generate() while (ipaGetPartialBranchingRatio(iPart))*fParentWeight; TParticlePDG *particle = pDataBase->GetParticle(iPart); @@ -427,7 +340,6 @@ void AliGenParam::Generate() // Selecting GeometryAcceptance for particles fPdgCodeParticleforAcceptanceCut; if (fGeometryAcceptance) if (!CheckAcceptanceGeometry(np,particles)) continue; - Int_t ncsel=0; Int_t* pFlag = new Int_t[np]; Int_t* pParent = new Int_t[np]; @@ -504,7 +416,7 @@ void AliGenParam::Generate() ipa++; // // Parent - SetTrack(0, -1, iPart, p, origin0, polar, 0, kPPrimary, nt, wgtp); + PushTrack(0, -1, iPart, p, origin0, polar, 0, kPPrimary, nt, wgtp); pParent[0] = nt; KeepTrack(nt); // @@ -529,7 +441,7 @@ void AliGenParam::Generate() iparent = -1; } - SetTrack(fTrackIt*trackIt[i], iparent, kf, + PushTrack(fTrackIt*trackIt[i], iparent, kf, pc, och, polar, 0, kPDecay, nt, wgtch); pParent[i] = nt; @@ -545,8 +457,8 @@ void AliGenParam::Generate() } // kinematic selection else // nodecay option, so parent will be tracked by GEANT (pions, kaons, eta, omegas, baryons) { - gAlice-> - SetTrack(fTrackIt,-1,iPart,p,origin0,polar,0,kPPrimary,nt,wgtp); + gAlice->GetMCApp()-> + PushTrack(fTrackIt,-1,iPart,p,origin0,polar,0,kPPrimary,nt,wgtp); ipa++; } break; @@ -554,10 +466,40 @@ void AliGenParam::Generate() } // event loop SetHighWaterMark(nt); } +//____________________________________________________________________________________ +Float_t AliGenParam::GetRelativeArea(Float_t ptMin, Float_t ptMax, Float_t yMin, Float_t yMax, Float_t phiMin, Float_t phiMax) +{ +// +// Normalisation for selected kinematic region +// + Float_t ratio = + fPtPara->Integral(ptMin,ptMax,(Double_t *)0,1.e-6) / fPtPara->Integral( fPtPara->GetXmin(), fPtPara->GetXmax(),(Double_t *)0,1.e-6) * + fYPara->Integral(yMin,yMax,(Double_t *)0,1.e-6)/fYPara->Integral(fYPara->GetXmin(),fYPara->GetXmax(),(Double_t *)0,1.e-6) * + (phiMax-phiMin)/360.; + return TMath::Abs(ratio); +} + +//____________________________________________________________________________________ + +void AliGenParam::Draw( const char * /*opt*/) +{ + // + // Draw the pT and y Distributions + // + TCanvas *c0 = new TCanvas("c0","Canvas 0",400,10,600,700); + c0->Divide(2,1); + c0->cd(1); + fPtPara->Draw(); + fPtPara->GetHistogram()->SetXTitle("p_{T} (GeV)"); + c0->cd(2); + fYPara->Draw(); + fYPara->GetHistogram()->SetXTitle("y"); +} AliGenParam& AliGenParam::operator=(const AliGenParam& rhs) { // Assignment operator + rhs.Copy(*this); return *this; }