Title :
A 250 GHz photonic band gap gyrotron traveling wave amplifier
Author :
Nanni, Emilio A. ; Shapiro, Michael A. ; Temkin, Richard J.
Author_Institution :
Plasma Sci. & Fusion Center, Massachusetts Inst. of Technol. Cambridge, Cambridge, MA, USA
Abstract :
A 250 GHz gyrotron traveling wave tube (gyro-TWT) for nanosecond pulse amplification with 1 kW peak power and gain exceeding 50 dB has been designed and is under construction. The amplifier uses a novel photonic band gap (PBG) interaction circuit that confines a TE03-like mode while providing lower-order mode suppression. Cold test results for the transmission line, input coupler, PBG waveguide and mode converter are presented. A triode electron gun designed for this amplifier has been constructed. Ongoing experimental installation and cold test results for the photonic structure will be discussed.
Keywords :
convertors; gyrotrons; millimetre wave amplifiers; photonic band gap; transmission lines; travelling wave amplifiers; waveguide couplers; PBG interaction circuit; PBG waveguide; TE03-like mode; frequency 250 GHz; input coupler; lower-order mode suppression; mode converter; nanosecond pulse amplification; photonic band gap gyrotron travelling wave amplifier; photonic structure; transmission line; triode electron gun; Couplers; Electron beams; Lattices; Loss measurement; Photonic band gap; Structural beams; Transmission line measurements;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2012 IEEE Thirteenth International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4673-0188-6
Electronic_ISBN :
978-1-4673-0187-9
DOI :
10.1109/IVEC.2012.6262218
