Critical Physics Issues for Ignition Experiments: Ignitor

Abstract

The crucial physics issues related to fusion burning plasmas and potential fusion reactors can only be studied in a burning plasma experiment. The Ignitor experiment is designed to take the most conservative approach to the near term study of the physics of fusion burning plasmas, using an optimal combination of compact dimensions and high magnetic fields to support high plasma particle densities and high plasma currents. The values of its geometrical parameters, plasma current, and magnetic field have been chosen based on current knowledge of ignition physics, so that ignition is most likely to be achieved. This article presents the most important ideas behind its design.