Publication
Megawatt power generation of the dual-frequency gyrotron for TCV at 84 and 126 GHz, in long pulses
Related publications (47)
High power mm-wave loss measurements of ITER ex-vessel waveguide components at the FALCON test facility at the Swiss Plasma Center
Timothy Goodman, René Chavan, Anastasia Xydou
Many future fusion devices will rely heavily, if not solely, on electron cyclotron (EC) heating subsystems to provide bulk heating, instability control (neoclassical tearing mode (NTM) stabilization), and thermal instability control. Efficient use of the i ...
E D P SCIENCES2023Experimental Testing of the European TH1509U 170-GHz 1-MW CW Industrial Gyrotron-Long Pulse Operation
Jean-Philippe Hogge, Francisco Sanchez, Ioannis Pagonakis, Konstantinos Avramidis
The upgraded European 1-MW, 170-GHz continuous wave (CW) industrial prototype gyrotron (TH1509U) for electron cyclotron resonance heating and current drive in ITER was tested at the Karlsruhe Institute of Technology (KIT). In this work, we report on the ma ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2022Prototype mitre bends of the ex-vessel waveguide system for the ITER upper launcher: Thermal hydraulic simulations and experiments with off-center mm-wave beams
Timothy Goodman, René Chavan, Anastasia Xydou, Matteo Vagnoni, Humberto Torreblanca Quiroz
On ITER, long pulse gyrotrons are required as a power source for electron cyclotron heating (ECH) and current drive (CD). The microwaves are guided from the gyrotrons, which are placed far from the Tokamak, into the plasma by transmission lines (TLs) and a ...
2021High-Power Testing of Guided-Wave Components for the ITER ECH Upper Launcher at the FALCON Test Facility
Timothy Goodman, René Chavan, Matteo Vagnoni
Each of the four ITER electron cyclotron heating (ECH) upper launchers (ULs) features eight transmission lines (TLs) made of guided-wave components used to inject 170-GHz microwave power into the plasma at a level of up to 1.31 MW per line, at the TL diamo ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2020Towards large area CVD diamond disks for Brewster-angle windows
Minh Quang Tran, Konstantinos Avramidis
In the frame of the EUROfusion Work Package Heating and Current Drive (WP HCD) of the Power Plant Physics and Technology (PPPT) program, CVD diamond disk Brewster-angle windows for gyrotron operation at multi-megawatt RF power levels and long pulses are un ...
2020Linear studies of spurious backward-wave instabilities in a dielectric-loaded smooth-wall gyrotron beam ducts
Stefano Alberti, Jean-Philippe Hogge, Jérémy Genoud
Recently developed self-consistent models for beam-wave interaction simulations of a gyrotron oscillator have been extended to study spurious backward-wave instabilities in smooth-wall circular symmetric beam ducts. Starting from a purely metallic case, th ...
IEEE2020The 3D Smith Chart: From Theory to Experimental Reality
Mihai Adrian Ionescu, Andrei Müller
The Smith chart was primarily developed, extended, and refined by Phillip Hagar Smith [1] in a series of works published [2]-[4] between 1939 and 1969. Smith was born in Lexington, Massachusetts, in 1905. He majored in electrical communications at Tufts Un ...
2020Advanced linear models for gyro-backward wave instabilities in gyrotrons
Parasitic oscillations excitation is one of the main point hindering high-power gyrotron operation for fusion application. These instabilities, besides being dangerous for the gyrotron components, could possibly degrade
the electron beam quality before it ...
EPFL2019Nearing final design of the ITER EC H&CD Upper Launcher
Olivier Sauter, Timothy Goodman, René Chavan, Jean-Daniel Landis, Robert Bertizzolo, Matteo Vagnoni, Florian Ramseyer, Emanuele Poli
The ITER ECRH system consists of 24 gyrotrons with up to 24 MW installed millimeter wave heating power at 170 GHz, power supplies, control system, transmission lines, one Equatorial and the four Upper Launchers. With its high frequency and small beam focus ...
ELSEVIER SCIENCE SA2019Diamond Window Technology for Electron Cyclotron Heating and Current Drive: State of the Art
Nuclear fusion power plants require electron cyclotron (EC) heating and current drive (H&CD) systems for plasma heating and stabilization. High-power microwave beams between 1 and 2?MW generated by gyrotrons propagate in a dedicated waveguide transmission ...
TAYLOR & FRANCIS INC2019