This paper presents a review of the experimental achievements related to the development
of high-power gyrotron oscillators for long-pulse or CW operation and pulsed gyrotrons for …

Gyrotron oscillators (gyromonotrons) are mainly used as high power millimeter wave
sources for electron cyclotron resonance heating (ECRH), electron cyclotron current drive …

Gyrotron oscillators (gyromonotrons) are mainly used as high power millimeter wave
sources for electron cyclotron resonance heating (ECRH), electron cyclotron current drive …

We discovered a specific property of the eigenmodes of a cylindrical waveguide, due to
which efficient mode excitation at ultrahigh (s= 4 n+ 1, n is integer) multiples of the …

A pulse prototype of a W-band TE 01 mode gyrotron traveling-wave tube (gyro-TWT)
amplifier is designed, and it features high gain and broadband capabilities. The TE 01 mode …

The mode converter is a key component in a gyrotron traveling-wave tube (gyro-TWT)
application system, which can transform the output circular TE 0n modes (in a gyro-TWT …

A dual-band gyrotron traveling wave amplifier (Gyro-TWT) can reduce the size, cost, and
weight of a transmitter in dual-band radar and communication systems. In this paper, a dual …

We propose the concept of high-power THz radiation sources based on five-fold frequency
multiplication in gyrotrons intended for plasma applications. The efficient excitation at the 5th …

Mode converters for millimeter waves can reduce the transmission loss, generate the
desired mode, and facilitate the application of high-power sources. A W-band broadband …

This report gives an update of the worldwide experimental achievements in the development
of long-pulse gyrotron oscillators for fusion plasma heating, plasma diagnostics and …