Theory of gyrotrons with a nonfixed structure of the high-frequency field

Bratman, V. L.; Moiseev, M. A.; Petelin, M. I.; Érm, R. É.

doi:10.1007/bf01030898

Cited by 136 publications

(47 citation statements)

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“…1. In this paper, we present the first detailed and systematic experimental characterization of different operating regimes, from linear to chaotic over a wide range of system parameters which will be summarized in the normalized ðD À IÞ plane with D and I being the normalized detuning and current, 9 respectively. After the seminal work by Ginzburg et al, 15 Airila et al 2 used a numerical approach to study non linear effects in gyro devices and presented their findings in the ðD À IÞ plane.…”

Section: Introductionmentioning

confidence: 99%

Experimental study from linear to chaotic regimes on a terahertz-frequency gyrotron oscillator

et al. 2012

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Basic wave-particle interaction dynamics from linear to chaotic regimes is experimentally studied on a frequency tunable gyrotron generating THz radiation in continuous mode (200 W) at 263 GHz which will be used for dynamic nuclear polarization nuclear magnetic resonance spectroscopy applications. In the studied system, the nonlinear dynamics associated to the waveparticle interaction is dominated by longitudinal mode competition of a given transverse TE m;p cavity-mode. This study covers a wide range of control parameter from gyro-traveling wave tube (gyro-TWT) to gyro-backward wave oscillator (gyro-BWO) like interactions for which extensive theoretical studies have been performed in the past on a simplified system. Besides the common route to chaos characterized by period doubling, other routes have been identified among which some are characterized by line-width frequency-broadening on the side-bands. The complex nonlinear dynamics is in good agreement with the theory and the experimental results are discussed on the basis of the prediction obtained with the nonlinear time-dependent selfconsistent codes TWANG and EURIDICE both based on a slow-time scale formulation of the self-consistent equations governing the wave-particle dynamics. V C 2012 American Institute of Physics. [http://dx

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Section: Introductionmentioning

confidence: 99%

Experimental study from linear to chaotic regimes on a terahertz-frequency gyrotron oscillator

et al. 2012

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“…The main application of powerful gyrotrons is electron cyclotron resonance plasma heating in tokamaks and stellarators and the noninductive current drive in tokamaks. Extensive literature exists on various aspects of these devices, (see, [4,12,13,14]). In the previous papers (see, [5,9,10,11]) we numerically investigated problems arising for a gyrotron operated at the fundamental cyclotron harmonic.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigations of Single Mode Gyrotron Equation

Cepītis

Kalis

Reinfelds

2009

Mathematical Modelling and Analysis

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“…Using these results self-consistent calculations can be carried out following [1,[10][11][12]. The theory and the equations describing gyrotron operation at arbitrary harmonics have been well known for a long time [1,[10][11][12][13][14]. Here, we use them in the form that was given in [1,10], and do not repeat them.…”

Section: Gds-v01mentioning

confidence: 99%

DESIGN OF A 60 GHz, 100 kW CW GYROTRON FOR PLASMA DIAGNOSTICS: GDS-V.01 SIMULATIONS

Jain¹,

Kartikeyan²

2010

PIER B

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Abstract-In this work, the design studies of a 60 GHz, 100 kW CW gyrotron have been presented. Mode selection is carefully studied with the aim of minimizing mode competition and to yield a perfect solid beam output through an RF window with a suitable dimpled-wall quasi-optical launcher. Cavity design and interaction computations are then carried out. In addition, preliminary design of the magnetron injection gun, magnetic guidance system, launcher, and RF window are presented. Thus, we present a feasibility study, which indicates that the operation of such a gyrotron is possible and can give a power in excess of 100 kW at an efficiency > 35%. As a part of this work, a complete Graphical User Interface package "GDS V.01" (Gyrotron Design Suit Ver.01) has been developed for the design and conceptualization of specific gyrotrons.

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Theory of gyrotrons with a nonfixed structure of the high-frequency field

Cited by 136 publications

References 0 publications

Experimental study from linear to chaotic regimes on a terahertz-frequency gyrotron oscillator

Experimental study from linear to chaotic regimes on a terahertz-frequency gyrotron oscillator

Numerical Investigations of Single Mode Gyrotron Equation

DESIGN OF A 60 GHz, 100 kW CW GYROTRON FOR PLASMA DIAGNOSTICS: GDS-V.01 SIMULATIONS

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