[Table of Contents]

Plasma and Fusion Research

Volume 8, 2406154 (2013)

Regular Articles

Frequency Selectivity of a Normal and a Hybrid Bragg Resonators
Keiichi KAMADA, Yukihiro SOGA, Shuhei ODAWARA, Ken MISAWA, Mitsuhiro YOSHIDA1) and Naum S. GINZBURG2)
Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
1)
High Energy Accelerator Research Organization, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
2)
Institute of Applied Physics, Russian Academy of Science, Nizhny Novgorod 603600, Russia
(Received 7 December 2012 / Accepted 24 April 2013 / Published 15 November 2013)

Abstract

A hybrid Bragg resonator with an advanced and a traditional Bragg reflectors was designed to develop the frequency selectivity of the free electron maser with frequency of 40 GHz using an intense relativistic electron beam. A normal Bragg resonator with two traditional Bragg reflectors was also designed for the same frequency. The interaction between a propagating wave and a quasi-cutoff mode in an advanced Bragg reflector was expected to provide higher frequency selectivity than a traditional Bragg reflector. In the cold test, the frequency resolution of the hybrid Bragg resonator was appeared to be ± 0.05 GHz, while that of the normal one was ± 0.5 GHz.

Keywords

free electron maser, bragg resonator, electron tube, intense electron beam, milimeter wave source

DOI: 10.1585/pfr.8.2406154

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This paper may be cited as follows:

Keiichi KAMADA, Yukihiro SOGA, Shuhei ODAWARA, Ken MISAWA, Mitsuhiro YOSHIDA and Naum S. GINZBURG, Plasma Fusion Res. 8, 2406154 (2013).