Testing the maximum number of particles

[henry2004y]

We would like to get a sense for a real-life case how many test particles we can trace simultaneously. This depends on how long we want to trace and how large the fields are, and we need to estimate for a practical situation.

[TCLiuu]

How to do this?

[henry2004y]

My idea is to use the current solution to #55 and then simply increase the number of particles until we run OOM. This will be more useful once #57 is finished such that we can then do some statistics.

[henry2004y]

This is not needed now since we know that the limiting factor is the size of the numerical field in most practical cases.