Field Propagation for Geant4 (and soon GeantV)

Recent Contributors:

• John Apostolakis (CERN)
• Somnath Banerjee (GSoC 2015 contributor)
• Jason Suagee (GSoC 2015 contributor)
• Sandro Wenzel (CERN)
• Quichen Xie (GSoC 2014 contributor)

Summary of Goals (GSoC 2015):

• Add integration Runge-Kutta methods (integrators), with additional capabilities including FSAL (first same as last) and interpolants (method to evalue the integrand at an intermediate point);
• Implement modern integrators with higher efficiency (DormandPrince 5/4, Bogacki Shampine 5/4, Verner);
• Introduce new general Nystrom RK methods - ie ones for ODEs with the first derivative in the right hand side;
• Enable vectorisation for one or multiple tracks.

An extended description of the 2015 GSoC project goals can be found at the Wiki page

Started from two sources:

• the Geant4 magneticfield category / directory
• the refinements / improvements created by Quichen Xie (GSoC 2014), supervised by Sandro Wenzel, aided by John Apostolakis

Test:

• /test directory
• create a functionality report

BenchMark:

• /benchmark directory
• read the benchmark report