"The accelerator adds a fixed amount of energy in
each stage. Thus it is linear in energy. "
According to this thread linear. It seems to be the strength rating of the "neodymium" in the magnet.
That's not the question, but I've been there before. Thy are just talking about that gaus rifle, that is a linear ammount of attration versus the resistance from friction and the other magnet. I was asking about the n40, and if the scale beween n1 and n45 is linear or not.