NEW FACILITIES FOR HIGH-POWER, HIGH-ENERGY ELECTRON BEAM PROCESSING

摘要

The recent development of high-power, high-energy industrial electron accelerators is expanding the applications for electron beam (ed) processing of commercial products and materials. Several new facilities have been built for applications, such as crosslinking thick-walled plastic tubing and molded plastic components, crosslinking plastic-aluminum pipe for how water depolymerizing cellulose in the process of making viscose for producing fibers and films, and sterilizing packaged medical devices. These facilities are equipped with Rhodotron accelerators made by Ion Beam Applications. This type of equipment can achieve high beam power (up to 200kW) with high electron energy (up to 10 MeV) by passing the electron beam repeatedly through a large, low-frequency, coaxial resonant cavity operating in the continuous-wave (cw) mode. High energy allows the treatment of thick, complex products with good dose uniformity while high power provides high processing rates and low unit costs. Non-divergent beam scanning can deliver the same dose (electron fluence) at different distances from the beam window. The accelerator can be mounted on a mobile platform for treating large composite structures from various angles. High-energy x rays (bremsstrahlung) can be used to treat parts that are too thick to be penetrated by the electron beam.