Control yoke for deflecting an electron beam, in particular in the case of an electron accelerator

摘要

A control yoke for deflecting a beam of electrically charged particles is described. The yoke includes a pair of parallel and spaced bars on each of which a plurality of electrical coils are positioned. The bars are made from a magnetic material. Current in the coils produces a magnetic field between the bars which varies in flux density, thereby, to vary the amount of deflection of the beam.