Development of a medium power, submillimeter wave gyrotron using a 17 T superconducting magnet

Journal Article · Fri Sep 01 04:00:00 EDT 1995 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.871156· OSTI ID:165470

Idehara, T; Shimizu, Y; Ichikawa, K; Makino, S; Shibutani, K; Kurahashi, K; Tatsukawa, T ^[1]; Ogawa, I ^[2]; Okazaki, Y; Okamoto, T ^[3]

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1. Department of Applied Physics, Faculty of Engineering, Fukui University, Fukui 910 (Japan)
2. Cryogenic Laboratory, Faculty of Engineering, Fukui University, Fukui 910 (Japan)
3. Electron Tube Division, Toshiba Corporation, Ohtawara-shi, Tochigi-ken 329-26 (Japan)

GYROTRON FU IV, a frequency tunable gyrotron for spectroscopy in the submillimeter wavelength range using a 17 T superconducting magnet, has been designed and constructed. Simulations predict that the gyrotron will emit radiation at high frequencies up to 394 GHz (TE{sub 041} cavity mode) at the fundamental of the electron cyclotron frequency, up to 858 GHz (TE{sub 091} mode) at the second harmonic and up to 1301 GHz (TE{sub 8 11 1} mode) at the third harmonic. Preliminary experimental results have demonstrated operation from 158 to 443 GHz at the fundamental and from 336 to 838 GHz at the second harmonic. Output powers are several hundred watts and efficiencies several percent. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.

• OSTI ID: 165470
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 9 Vol. 2; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
COMPUTERIZED SIMULATION
CYCLOTRON HARMONICS
HARMONIC GENERATION
MICROWAVE AMPLIFIERS
MICROWAVE TUBES
SPECTROSCOPY
SUPERCONDUCTING MAGNETS