Abstract: Apparatus for electron beam treatment of three-dimensional parts that includes cavities in a shielded rotating drum that preferably includes additional rotation mechanism for rotating parts within cavities in said drum. Radiation associated with the electron beam emitter is substantially shielded by the combination of the drum and the additional radiation shielding. The rotating drum is preferably made of at least four sections axially stacked, and its shielding properties are enhanced by including lead filled holes drilled in the sections.

Abstract: The present disclosure includes an electron beam emitter, a roller for a web, circumferential radiation shielding, a reaction chamber, movement between open and closes positions, a depositor, baffles, inert gas dispenser, and other features. One example in the present disclosure is a web carrying roller for electron beam irradiation of the web on one side of that roller within a baffle-containing shielded area, while another side of that roller is outside of the shielded area, and near the two ends of the roller are arcuate tongue and groove barriers to x-radiation leakage from the shielded area. The baffle-containing shielded area has a series of voids separated by walls, rather than having the shielded area positioned close to the circumference of the cylinder along its length.