Currently ongoing at Los Alamos National Laboratory is a program to develop high-power, planar 100-300 GHz traveling-wave tubes. A necessary part of this effort is a sheet electron beam source. Previously, we have described a novel asymmetric solenoid lens concept for transforming the circular beam from a high-perveance electron gun to a planar configuration. The lens is a standard electromagnetic solenoid with elliptical, instead of circular, pole apertures. The elliptical pole openings result in asymmetric focusing, which in turn forms an elliptical sheet beam suitable for our planar structures. Here we report the first experimental demonstration of this lens.
A schematic of a typical resistively charged Marx generator is shown in Figure 1. Other Marx configurations Researchers at Los Alamos National Laboratory use inductors in place of the charging resistors. Our Marx (LANL) are developing a new solid-state high-voltage modulator replaces these linear charging elements with Marx modulator for the generation of pulsed power. The fast-recovery diodes [9], as shown in Figure 2. The diodes initial application of the LANL modulator is to provide provide a low-loss, low-impedance path for the Marx power to a magnetron that requires a 46-kV, 160-A, 5-ts charging current between pulses and a high-impedance rectangular pulse. This modulator technology is also path when the Marx bank is erected. being developed for other applications, including portable millimeter wave sources, a beam energy corrector for RCHG _Charge induction accelerators, and space-based power systems. The LANL solid-state modulator has several benefits, Lio + \ + including wave shape control, switch protection, efficiency, and compactness. The present paper describes Switch this source technology and its design.
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