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 …

Gyrotron R&D within the EUROfusion Work Package Heating and Current Drive (WPHCD) is
addressing the challenging requirements posed on gyrotrons by the European concept for a …

Considering the recent understanding of the physics of electron trapping mechanisms taking
place in the magnetron injection gun (MIG) region of gyrotrons and the sensitivity of the …

This article presents investigations on the design of coaxial gyrotron cavities with mode-
converting corrugations, operating at the second harmonic of the electron cyclotron …

In high-power fusion gyrotrons, the maximum heat-load on the wall of the interaction section
is in the order of 2 kW/cm 2, which is the major limiting technological factor for output power …

Magnetic fusion is one approach to generate thermonuclear fusion power in an
environmental friendly way. The Electron Cyclotron Resonance Heating is considered as the …

Second-harmonic operation of gyrotron oscillators offers the possibility to generate
millimeter and submillimeter radiation at half the value of the magnetic field required for …

In the frame of a EUROfusion Enabling Research Project (ENR) KIT and NKUA are working
on new concepts for highly efficient, megawatt-class fusion gyrotron systems that will …

Theoretical validation of a dual-frequency operation at 136 GHz and 170 GHz is carried out
on the basis of the 2 MW 170 GHz coaxial-cavity pre-prototype gyrotron that has been built …

A first theoretical study on the possibility for stepwise frequency tuning of a dual-frequency
170/204 GHz TE 34, 19/TE 40, 23-mode coaxial-cavity gyortron pre-prototype, under …