FYKOS Year 29 Series 6 Problem 4 — Fire in the hole · FYKOS 29 #29.6.4
Physics · mechanics · electromagnetism
Problem
Neutral particle beams are used in various fusion devices to heat up plasma. In a device like that, ions of deuterium are accelerated to high energy before they are neutralized, keeping almost the initial speed. Particles coming out of the neutralizer of the COMPASS tokamak have energy 40 keV and the current in the beam just before the neutralization is 12 A. What is the force acting on the beam generator? What is its power?