1 void sim(Int_t nev=4) {
2 const char * kYear = "08" ;
4 simu.SetMakeSDigits("TRD TOF PHOS HMPID EMCAL MUON FMD PMD T0 ZDC VZERO");
5 simu.SetMakeDigits ("TRD TOF PHOS HMPID EMCAL MUON FMD PMD T0 ZDC VZERO");
6 simu.SetMakeDigitsFromHits("ITS TPC");
7 simu.SetWriteRawData("ALL","raw.root",kTRUE);
8 simu.SetDefaultStorage("local://$ALICE_ROOT");
9 simu.SetSpecificStorage("GRP/GRP/Data",
10 Form("local://%s",gSystem->pwd()));
12 simu.SetRunQA("ALL:ALL") ;
13 AliQA::SetQARefStorage("local://$ALICE_ROOT") ;
15 for (Int_t det = 0 ; det < AliQA::kNDET ; det++) {
16 simu.SetQACycles(det, 2) ;
29 TPythia6 *pythia = TPythia6::Instance();
31 Double_t xsection = pythia->GetPARI(1);
32 Int_t ntrials = pythia->GetMSTI(5);
34 TTree *tree = new TTree("Xsection","Pythia cross section");
35 TBranch *branch = tree->Branch("xsection", &xsection, "X/D");
36 TBranch *branch = tree->Branch("ntrials" , &ntrials , "X/i");
39 TFile *file = new TFile("pyxsec.root","recreate");
43 cout << "Pythia cross section: " << xsection
44 << ", number of trials: " << ntrials << endl;