Examples of physics lists

A physics list is constituted by the lists of processes which are registered for each particle. Many are created in a complicated way - in order to share code between different ones.

The best place to get a first idea of the processes executed for key particles is using the examples. ( Specific ones. )

Here is a simple physics list: PhysListEmStandard from TestEm3, which is an extended example for Electromagnetics.

Look at the lines for gamma and e-. These are the most important ones for many purposes: the consume the most CPU time, and to a great extent determine the accuracy of many simulation applications.

In addition the core of Geant4 adds the Transportation process - which queries the geometry Navigator for the distance to the next boundary.  So this is provided 'for free' to all particles.

-- JohnApostolakis - 27-Apr-2012