(DONE) Adapted PD model to QSS stand-alone version.
(TODO) Run Experiment 3 with the QSS stand-alone version. (TODO)
(DONE) Run Experiment 1 to test the internal error calculation in Geant4. Obtained equivalent results.
(DONE) Create presentation for meeting with John Apostolakis.
* We focused the discussion on the invariance of the error when changing epsilon.
* Possible source for this counterintuitive result:
* External scripts.
* Roundoff errors.
(TODO) Calculate the #RHS steps internally in Geant4 for several distances (100mm, ..., 1km) (see issue #10421).
(TODO) Calculate the accumulated errors (r_error, max(x_error)) internally in Geant4 for several distances (100mm, ..., 1km) (see issue #10420).