ATLFAST is the package for  fast simulation of ATLAS detector  and physics analysis.

• It includes most crucial detector aspects: jets reconstruction in the calorimeter, momentum/energy smearing for leptons and photons, magnetic fields effects and missing transverse energy.
• It provides, starting from the list of particles in the event, the list of reconstructed jets, isolated leptons and photons and expected missing transverse energy.
• Optionally package provides also list of reconstructed charge tracks.
• Package is completed by the ATLFAST-B, set of useful routines which simulate efficiencies for tagging/rejection of b-jets, c-jets and tau-jets.

 Fortran TDR version for physics simulation should be checkout from the cvs repository

        cvs checkout -d atlfast -r  atlfast-00-02-21 offline/atlfast

          compressed version available  on file atlfast-00-02-22.tar.gz

stand-alone makefiles are provided to compile both library and examples;
the manualfor the package is ATLAS Internal Note  ATL-PHYS-98-131

28.06.2003 ->  if you use demo-pythia61-tauola please replace tauface-jetset.f
                       ( fix from C.Biscarat <biscarat@in2p3.fr>)

in version  00-02-22: corrected demo/demo-pythia61-photos/demo.f;  implemented demo-pythia62;
                                        changed default value for YPAR(17)
in version  00-02-21: corrected interface to Tauola in demo/demo-pythia61-tauola/libtauola/tauface-jetset.f

in version  00-02-20: implementation of matrix element generation in demo-xxbb
                                           corrected missing factor pi/2 in the Wbb and Zbb code
                                           correct isolation for electrons  (version 2.60 of atlfastlib.a)

• February 2002: parametrisation of efficiency for forward jet-tagging and central jet-veto

                               available from: http://www.pi.infn.it/atlas/physics/soft.html

Evolution of Atlfast-fortran

• Physics algorithms: click here (suspended)
• AtlfastTemp - integration  with Athena:  click here (suspended)

Root implementation:  atlfast-root (obsolete)