Rapid frequency step-switching of a submillimeter wave gyrotron by modulation of the electron beam

Journal Article · Wed Jun 01 04:00:00 EDT 1994 · Physics of Plasmas; (United States)

DOI:https://doi.org/10.1063/1.870683· OSTI ID:6640727

Idehara, T; Shimizu, Y; Makino, S; Ichikawa, K; Tatsukawa, T ^[1]; Ogawa, I ^[2]; Brand, G F ^[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. School of Physics, University of Sydney, N. S. W. 2006 (Australia)

An experimental study of the rapid step-switching of the frequency of a submillimeter wave gyrotron is described. Modulation of the energy of the electron beam in turn modulates the electron mass and hence the cyclotron resonance frequency [ital f][sub [ital c]] or its second harmonic 2[ital f][sub [ital c]], while the magnetic field [ital B][sub 0] remains the same. This opens up the possibility of switching from one cavity mode to another. The first experimental results for frequency switching between two fundamental modes and between a fundamental and a second harmonic mode are demonstrated.

• OSTI ID: 6640727
• Journal Information: Physics of Plasmas; (United States), Journal Name: Physics of Plasmas; (United States) Vol. 1:6; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700350* -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
BEAM INJECTION HEATING
BEAMS
CAVITIES
CYCLOTRON FREQUENCY
CYCLOTRON RESONANCE
ELECTRON BEAMS
ELECTRON CYCLOTRON-RESONANCE
ELECTRON TUBES
ELECTRONIC EQUIPMENT
ENERGY RANGE
EQUIPMENT
FREQUENCY MODULATION
HARMONICS
HEATING
LEPTON BEAMS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
MODULATION
OSCILLATIONS
PARTICLE BEAMS
PLASMA DIAGNOSTICS
PLASMA HEATING
RELATIVISTIC RANGE
RESONANCE