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Currently ongoing at Los Alamos National Laboratory is a program to develop high-power, planar 100-300 GHz traveling-wave tubes (TWTs). The promise of planar TWT technology is: 1) the radio-frequency (RF) structures lend themselves well to established micro-fabrication techniques: and 2) by spreading the electron beam in one dimension, we effectively eliminate the beam self force and can transport...
LANL has developed a new vane loaded waveguide RF structure for a sheet beam TWT. The goal was to create a new class of wideband RF structures that allow simple mechanical fabrication and have geometry suitable for interaction with sheet electron beams. LANL has developed an RF structure using planar geometry for simple EDM machining at 94GHz. Structure gain was demonstrated with a 2A pencil beam
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