FOCUS stands for Full Orbit CUda Solver, it simulates the behavior of particles inside plasmas solving the motion equations.
You will need to install meson and ninja in order to compile the project. In the root directory of the project run
$ meson build # This will set the project build inside a directory named build
$ cd build # feel free to change the name from build to whatever you prefer.
$ ninja # This will be the one that actually builds the project.
For contributing guidelines see CONTRIBUTING.md.