Large-signal theory of gyro traveling wave tubes in cyclotron harmonics

Journal Article · Mon Jun 01 00:00:00 EDT 1992 · IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/27.142817· OSTI ID:7200843

Nusinovich, G S; Li, H ^[1]

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1. Lab. for Plasma Research, Univ. of Maryland, College Park, MD (US)

A nonlinear theory of gyro traveling wave tubes (gyro-TWT's) at cyclotron harmonics has been developed taking into account the electron velocity spread and the possibility of operating with significant Doppler frequency up-shift (CARM operation). In this paper, the authors will show that the orbital efficiency of the relativistic gyro-TWT operating at the second cyclotron harmonic with large frequency up-conversion may exceed 60%. We also show that the influence of the axial inhomogeneity of the wave field on the relation between amplitudes of electric and magnetic fields of the wave causes small changes in the efficiency of gyro-TWT's. The results obtained demonstrate the sensitivity of the harmonic gyro-TWT efficiency with respect to electron velocity spread at different axial wave numbers. In the final section of the paper the expressions for the gain are derived and discussed.

• OSTI ID: 7200843
• Journal Information: IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (United States) Vol. 20:3; ISSN 0093-3813; ISSN ITPSB
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426000 -- Engineering-- Components
Electron Devices & Circuits-- (1990-)
440800* -- Miscellaneous Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
AMPLIFICATION
AMPLIFIERS
BEAMS
CYCLOTRON HARMONICS
DOPPLER EFFECT
EFFICIENCY
ELECTRON BEAMS
ELECTRON TUBES
ELECTRONIC EQUIPMENT
ENERGY RANGE
EQUATIONS
EQUIPMENT
GAIN
HARMONICS
LEPTON BEAMS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
NONLINEAR PROBLEMS
OPERATION
OSCILLATIONS
PARTICLE BEAMS
RELATIVISTIC RANGE
SENSITIVITY
TRAVELLING WAVE TUBES
VELOCITY