论文信息 - 3.4: Sheet beam stick for low-voltage W-band extended interaction klystron (EIK)

3.4: Sheet beam stick for low-voltage W-band extended interaction klystron (EIK)

The stable transport of high-perveance, low-voltage sheet electron beams is a key requirement for the successful development of compact, high-power sheet beam amplifiers. We describe a beam stick to demonstrate the transport of such a beam (19.5 kV, 3.5 A) in a solenoidal magnetic field of about 8.5 kG. The beam stick consists of a novel sheet beam gun having single-plane convergence of a factor of ∼30, a permanent magnet solenoid, a 1.8-cm-long × 5 mm wide × 0.4 mm high beam tunnel, and an isolated collector. The engineering design was based closely upon MICHELLE and MAGIC-3D simulations of a W-band extended interaction klystron.

[1] T. Antonsen,et al. Solenoidal transport of low-voltage sheet beams for millimeter wave amplifiers , 2009, 2009 IEEE International Vacuum Electronics Conference.

[2] K.T. Nguyen,et al. Sheet-Beam 90 GHz and 220 GHz Extend-Interaction-Klystron Designs , 2007, 2007 IEEE International Vacuum Electronics Conference.

[3] Frank L. Krawczyk,et al. Stability of an emittance-dominated sheet-electron beam in planar wiggler and periodic permanent magnet structures with natural focusing , 2005 .

[4] B. Levush,et al. Intense Sheet Electron Beam Transport in a Uniform Solenoidal Magnetic Field , 2009, IEEE Transactions on Electron Devices.

[5] Richard True,et al. The MICHELLE three-dimensional electron gun and collector modeling tool: theory and design , 2002 .

[6] B. Levush,et al. High-perveance W-band sheet-beam electron gun design , 2008, ICOPS 2008.