Running the BaBar Monte Carlo

Running the BaBar Monte CarloEvent GeneratorsAbi SofferColorado StateBaBar Tutorial11/6/2000• The big picture• Basics of running the generators• Changing things:– Decay modes– Beam parameters– Filtering for interesting eventsThe Big PictureGenFwkInt Bbsim SimApp BearEvtGen Geant3 Detector Reco(jetset) Interactions Responsebkqedkoralbetc.GeneratorsQA BbsimModuleApp AppGenFwkInt Bbsim SimApp BearEvtGen Geant3 Detector Reco(jetset) Interactions Responsebkqedkoralbetc.xdr file objy objyuse & loseBasics of Running BaBar Softwarehttp://www.slac.stanford.edu/BFROOT/www/Physics/Tools/generators/GenFwkInt/GeneratorsQA.htmlCreate a test-release directory:> newrel -s $MYWORK -t 9.8.0 980-genscratch disk: releasedir name$BFROOT/work/#/id> cd 980-gen> srtpath (Set the needed env. variables)> addpkg workdir (Get a work directory)> gmake workdir.setup (Set up workdir soft links)Generating Basics> cd workdir> sp3analboot (Read beam params from conditions DB)> GeneratorsQAApp> source PARENT/GeneratorsQA/EvtGen.tcl> ev begin -nev 1000Koralb,> exitBkqed,# ofetc.eventsPrintout for first 10 (or any other number of) events :StdHepPrint:StdHep Track info for event 1 :StdHepPrint:Trk# Stat Id Dtr1 DtrN Mom1 MomN Px Py Pz E Vx Vy VzStdHepPrint: 1 3 e- 3 3 0 0 -0.1651 -0.0010 8.9870 8.9886 0.1040 0.3304 -0.6490StdHepPrint: 2 3 e+ ...