Title :
14.4: Design of a 250 GHz photonic band gap gyrotron amplifier
Author :
Nanni, Emilio A. ; Shapiro, Michael A. ; Sirigiri, Jagadishwar R. ; Temkin, Richard J.
Author_Institution :
Plasma Sci. & Fusion Center, Massachusetts Inst. of Technol., Cambridge, MA, USA
Abstract :
The design of a 250 GHz gyrotron traveling wave amplifier for nanosecond pulses with gain exceeding 50 dB is presented. The amplifier uses a novel photonic band gap (PBG) interaction circuit. The PBG interaction structure confines a TE03-like mode with comparable interaction efficiency to a circular waveguide, while providing lower-order mode suppression and distributed loss along the entire interaction circuit. The design of the input coupler, interaction circuit and electron gun will be discussed.
Keywords :
circular waveguides; gyrotrons; microwave amplifiers; photonic band gap; travelling wave amplifiers; TE03-like mode; circular waveguide; electron gun; frequency 250 GHz; gyrotron traveling wave amplifier; input coupler; lower-order mode suppression; nanosecond pulses; photonic band gap interaction circuit; Coupling circuits; Electron beams; Frequency; Gyrotrons; Lattices; Nuclear and plasma sciences; Optical losses; Photonic band gap; Pulse amplifiers; Waveguide junctions; gyrotron; photonic band gap; traveling wave amplifier;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2010 IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4244-7098-3
DOI :
10.1109/IVELEC.2010.5503423
