Russian gyrotrons: Achievements and trends

AG Litvak, GG Denisov… - IEEE Journal of …, 2021 - ieeexplore.ieee.org
The last decade has contributed to the rapid progress in the gyrotron development.
Megawatt-class, continuous wave gyrotrons are employed as high-power millimeter (mm) …

The progress in the studies of mode interaction in gyrotrons

SP Sabchevski, MY Glyavin, GS Nusinovich - Journal of Infrared …, 2022 - Springer
The studies on mode interaction in gyrotrons had always been an active field of research
due to their theoretical and practical importance for better understanding of the underlying …

First demonstration of frequency-locked operation of a 170 GHz/1 MW gyrotron

AN Kuftin, GG Denisov, AV Chirkov… - IEEE Electron …, 2023 - ieeexplore.ieee.org
A 20 kW gyrotron-driver has been used to control the RF generation of a 170 GHz/1 MW
ITER prototype gyrotron. The frequency-locked operation regime has been obtained …

Boosted excitation of the fifth cyclotron harmonic based on frequency multiplication in conventional gyrotrons

GG Denisov, IV Zotova, AM Malkin, AS Sergeev… - Physical Review E, 2022 - APS
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 …

Concept design of the megawatt power level gyrotron stabilized by a low-power signal for DEMO project

G Denisov, A Kuftin, V Manuilov, A Chirkov… - Nuclear …, 2022 - iopscience.iop.org
The specific features of the main components of the new powerful 230 GHz/80 kV/40 A
gyrotron aimed to use in the future control fusion facility DEMO are described. The gyrotron …

[HTML][HTML] Short-pulse frequency stabilization of a MW-class ECRH gyrotron at W7-X for CTS diagnostic

L Krier, KA Avramidis, H Braune, G Gantenbein… - Fusion engineering and …, 2023 - Elsevier
At the Wendelstein 7-X stellarator, a 174 GHz Collective Thomson Scattering (CTS)
diagnostic will be implemented. One of the 140 GHz Electron Cyclotron Resonance Heating …

[KNIHA][B] State-of-the-art of high-power gyro-devices. Update of experimental results 2021

M Thumm - 2021 - library.oapen.org
This report presents an update of the experimental achievements published in the review
“State-of-the-Art of High-Power Gyro-Devices and Free Electron Masers”, Journal of Infrared …

Simulations of the Experimental Spectral Features of Megawatt-Class Gyrotron Fed With an External Signal

AN Kuftin, AP Fokin… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
We simulate the spectral features of an experimentally implemented gyrotron operating in a
170-GHz band with MW-level output in the frequency-locked regime. Simulations are …

Experimental Study of Extended Operating Zone of a 170-GHz/1-MW Gyrotron Locked by a Narrowband External Signal

AN Kuftin, GY Golubiatnikov, VA Vilkov… - … on Electron Devices, 2024 - ieeexplore.ieee.org
For a gyrotron with a operating frequency of 170 GHz and a megawatt power level, an
expansion of the operating zone by 2.4 times compared to a free-running gyrotron was …

Concept of gyrotron complexes with serial phase and frequency locking

RM Rozental, IV Zotova, AS Sergeev… - … on Electron Devices, 2023 - ieeexplore.ieee.org
For the development of complexes of coherently operating gyrotrons, we propose a scheme
with serial connection when the generation frequency and phase of each gyrotron are …