This repository contains code (originally by Callum) and input GDMLs for building the merged 2x2 + MINERvA geometry.
You need the pyg4ometry package, which can be installed via pip. Be warned,
the installation will use every core on your machine to compile the necessary
C++ libraries.
Run, for example, pyg4_mod_and_add_newMINERvA.py.