EURIDICE: A code-package for gyrotron interaction simulations and cavity design

Avramides, K.A.; Pagonakis, I.; Iatrou, C.T.; Vomvoridis, J. L.

doi:10.1051/epjconf/20123204016

Cited by 89 publications

(46 citation statements)

References 12 publications

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“…5 Among the different codes in the package, for this work, the time-dependent self-consistent multimode code, EVRIDIKI, has been used. As for TWANG, this code is based on the slow-time scale formulation of the electron equation of motion.…”

Section: B Euridice Code-packagementioning

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: B Euridice Code-packagementioning

confidence: 99%

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

et al. 2012

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“…There are four European interaction codes, available at EGYC, based on the slow-time scale approximation and thus capable of fast simulations: EURIDICE [4], SELFT [5], COAXIAL [6], and TWANG [7]. The results of the codes are in agreement in the majority of cases that have been tested.…”

Section: Introductionmentioning

confidence: 81%

On the numerical scheme employed in gyrotron interaction simulations

Avramides

Ram

Dumbrājs

et al. 2012

EPJ Web of Conferences

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Abstract. We report on the influence of the numerical scheme employed in gyrotron interaction simulations. Results obtained with the Crank-Nicolson scheme are compared with those obtained with the Backward Time -Centred Space (BTCS) fully implicit scheme. We present realistic cases where, for discretisation parameters in the range usually used in gyrotron simulations, the results can be very different. Hence, the numerical scheme used can be responsible for obscuring the underlying physics if its convergence is not tested carefully.

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“…This led to χ max ~ 125 [8]. The RF behaviour of the very high-order mode TE 52,18 (eigenvalue ~ 125) and its competing modes was studied by multi-mode, time-dependent, self-consistent simulations using EURIDICE [9] and is shown in Fig. 2.…”

Section: Ghz Gyrotron Development For Demomentioning

confidence: 99%

Recent Trends in Fusion Gyrotron Development at KIT

et al. 2017

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Abstract. ECRH&CD is one of the favorite heating system for magnetically confined nuclear fusion plasmas. KIT is strongly involved in the development of high power gyrotrons for use in ECRH systems for nuclear fusion. KIT is upgrading the sub-components of the existing 2 MW, 170 GHz coaxial-cavity short-pulse gyrotron to support long-pulse operation up to 1 s, all components will be equipped with a specific active cooling system. Two important developments for future high power, highly efficient gyrotrons will be discussed: design of gyrotrons with high operating frequency (~ 240 GHz) and efficiency enhancement by using advanced collector designs with multi-staged voltage depression.

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EURIDICE: A code-package for gyrotron interaction simulations and cavity design

Cited by 89 publications

References 12 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

On the numerical scheme employed in gyrotron interaction simulations

Recent Trends in Fusion Gyrotron Development at KIT

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