Introducing ATLAS Magnetic Field

The ATLAS magnetic field is integrated in FullSimLight and can be used. The Magnetic field map file used and supported are: full_bfieldmap_7730_20400_14m_version5.root solenoid_bfieldmap_7730_0_14m_version5.root toroid_bfieldmap_0_20400_14m_version5.root bmagatlas_09_fullAsym20400.data

If the magnetic field maps are not available, a constant magnetic field can be set through the macro file. The test application "testMagneticField" can be used to test the different magnetic field maps and produce Maps in 2D histograms that are saved in a ROOT file. However there is no dependency on ROOT, because the histograms are created, filled and saved using the G4AnalysisManager.