Title :
High-perveance W-band sheet-beam electron gun design
Author :
Nguyen, Khanh T. ; Pasour, John ; Wright, Edward L. ; Petillo, John ; Levush, Baruch
Author_Institution :
Naval Res. Lab., Washington, DC
Abstract :
A design methodology for sheet-beam formation and solenoidal magnetic field transport is described, and a point design for a W-band amplifier gun and beam transport is presented. The gun topology flexibly permits adjustment of beam width to accommodate various interaction circuits while maintaining beam height. This topology has been employed in the design of a 19.5 kV, 3.6 A (1.32 mu-perv.) gun with beam final cross-section of approximately 4.2 mm x; 0.32 mm, using the 3-D gun code MICHELLE in conjunction with the magnet code MAXWELL-3D. Beam thermal effects due to cathode temperature are also included in the simulation.
Keywords :
cathodes; electron guns; magnetic fields; wideband amplifiers; 3D gun code MICHELLE; W-band amplifier gun; W-band sheet-beam electron gun design; beam thermal effects; beam transport; cathode temperature; current 3.6 A; gun topology; magnet code MAXWELL-3D; sheet-beam formation; solenoidal magnetic field transport; voltage 19.5 kV; Cathodes; Circuit topology; Current density; Design methodology; Electron beams; Flexible printed circuits; High power amplifiers; Magnetic fields; Permanent magnets; Temperature; Sheet beam; W-band; amplifiers; electron gun; high perveance;
Conference_Titel :
Vacuum Electronics Conference, 2008. IVEC 2008. IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4244-1715-5
DOI :
10.1109/IVELEC.2008.4556326
