Conceptual Design for an Actively Cooled, High-Average-Power Electron-Beam Accelerator.

摘要

A major goal of researchers in the Beam Research Program at the Lawrence Livermore National Laboratory is to use induction linear accelerators to produce high-average-power electron beams. As the peak power and the duty factor of the electron beam are increased, the method by which residual electron energy is absorbed becomes increasingly important. We have completed a conceptual design of an electron beam absorber system that uses water as both an energy absorber and a cooling medium. This configuration uses an aluminum window to separate the water absorber from a vacuum beamline. Such an arrangement has several desirable features. First, any necessary reconfiguration for an increase or decrease in run time and/or beam power is minimal. Also, the subsystems use current technology. We describe a point design for the window, the absorber tank, and its subsystems. 10 refs., 10 figs., 1 tab.