O. Kononenko

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Since June 2011 the rapid increase of the luminosity performance of the LHC has come at the expense of both increased temperature and pressure of specific, nearbeam, LHC equipment. In some cases, this beam induced heating has caused delays while equipment cool-down, beam dumps and even degradation of some devices. This contribution gathers the observations(More)
For the first time rigorous mathematical model is developed for standing TE and TM waves in the longitudinal direction in coaxial cavity gyrotron with a corrugated insert. Based on this theory simulations are performed and novel numerical results are presented in particular for the ITER relevant gyrotron developed in FZK Karlsruhe, Germany. Connection(More)
  • O. Kononenko
  • MIKON 2008 - 17th International Conference on…
  • 2008
Rigorous mathematical methods are proposed to study eigen TE and TM modes of the corrugated resonators for the modern ITER relevant coaxial gyrotrons. These techniques could be used for the numerical analysis of the gyrotron resonators with the arbitrary corrugation parameters, moreover arbitrary mode numbers can be considered. Simulations performed based(More)
For the first time rigorous mathematical model is developed for TM modes in a coaxial cavity gyrotron. This theory has no restrictions and can be applied for any corrugation parameters and mode numbers. Simulation software has been developed to find eigen cut-off wave numbers and calculate electromagnetic field components for TM modes. Novel results of the(More)
Coaxial cavity gyrotrons are the most perspective sources of millimeter wave radiation which are developed and used for electron-cyclotron plasma heating in thermonuclear facilities. Rigorous mathematical methods to study gyrotrons with rectangular and smooth longitudinal corrugations are proposed for TE waves. Comparison of the numerical results obtained(More)
Rigorous mathematical model is developed for eigen traveling TM modes in a coaxial cavity gyrotron with a corrugated insert. This theory has no simplifying assumptions and can be applied for any corrugation parameters and wavelengths. Eigenvalues of the corresponding modes, electromagnetic field components and ohmic losses can be calculated by a gyrotron(More)
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