The European DEMO is a pulsed device with pulse length of 2 hours. The functions devoted
to the heating and current drive system are: plasma breakdown, plasma ramp-up to the flat …

Effects of the output window reflection instability on the performance of our designed-band
broadband gyrotron traveling wave tube (gyro-TWT) were studied by the simulation and hot …

Проект мощного длинноимпульсного лазера на свободных электронах (ЛСЭ)
субмиллиметрового диапазона длин волн развивается в сотрудничестве ИЯФ СО РАН …

In anticipation of an Electron Cyclotron Resonance Heating system upgrade for the
stellarator Wendelstein 7-X, a 1.5 MW-140 GHz continuous-wave gyrotron is under …

Abstract The European DEMO (EU-DEMO) reactor studies within EUROfusion aim to
develop a fusion power plant concept. The large tokamak device needs an auxiliary heating …

For the required upgrades of the Electron Cyclotron Resonance Heating system at the
stellarator Wendelstein 7-X, the development of a 1.5 MW 140 GHz Continuous Wave (CW) …

The possibility of parasitic excitation of backward waves directly in the gyrotron cavity is
demonstrated, by simulation, for two existing high-power gyrotrons. These are the 140-GHz …

A multifaceted simulation procedure, addressing the electron beam properties, the beam-
wave interaction, and the internal losses, has been used for the simulation of the …

With the help of special edge structures, which correspond to the so-called Schroeder phase
gratings, the electromagnetic field in a cylindrical waveguide can be perturbed in such a way …

High-power gyrotrons usually suffer from parasitic oscillations, appearing in the beam tunnel
region, which degrade the electron beam quality and the interaction efficiency in the cavity …