Compact toroidal energy storage device using relativistically electron cloud densified by travelling magnetic waves (TMW)

A new concept for a small compact multi-megajoule energy storage device utilizing relativistically densified electron beam circulating in a torus is proposed. The electron cloud is produced through inductive charge injection by a travelling magnetic wave circulating the torus. Parameters are given for representative manageable toroidal energy storage devices, consisting of 1 m and 32 m in major radius respectively, which could store more than 4 x 1017 electrons and 30 mj in energy, which are one or two orders of magnitude higher than other similar devices. The concept utilizes the ideas that large electric and magnetic fields can be produced by a partially spaced charge neutralized intense relativistic electron beam which could become many orders of magnitude greater than the externally applied field confining the beam