Published July 2008 | Version v1
Journal article Metadata-only

W-band TE01 gyrotron backward-wave oscillator with distributed loss

Creators

  • 1. Department of Physics, National Tsing Hua University, Hsinchu, 300, Taiwan (China)
  • 2. Department of Communication Engineering, National Penghu University, Penghu, Taiwan (China)
  • 3. Department of Electro-Optical Engineering, Southern Taiwan University, Tainan, Taiwan (China)

Description

Distributed wall loss is proposed to enhance the stability and tunability of a W-band TE01 gyrotron backward-wave oscillator (gyro-BWO). Simulation results reveal that loss effectively suppresses the unwanted transverse modes as well as the high-order axial modes (HOAMs) without degrading the performance of a gyro-BWO that operates at the fundamental axial mode. Linear and nonlinear codes are used to calculate the interaction properties. The effects of the distributed loss on the starting currents of all of the modes of interest are discussed in depth. The interacting structure is optimized for stability. The calculated peak output power is 102 kW, corresponding to an efficiency of 20%. The 3 dB tuning bandwidth is 1.8 GHz, centered at 94.0 GHz when using 5 A and 100 kV electron beam.

Additional details

Identifiers

DOI
10.1063/1.2950305;

Publishing Information

Journal Title
Physics of Plasmas
Journal Volume
15
Journal Issue
7
Journal Page Range
p. 073105-073105.6
ISSN
1070-664X
CODEN
PHPAEN

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
41018707
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
ELECTRON BEAMS; LOSSES; MICROWAVE AMPLIFIERS; OSCILLATORS; SIMULATION; TUNING; WALLS
Descriptors DEC
AMPLIFIERS; BEAMS; ELECTRONIC EQUIPMENT; EQUIPMENT; LEPTON BEAMS; MICROWAVE EQUIPMENT; PARTICLE BEAMS

Optional Information

Notes
(c) 2008 American Institute of Physics