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H-mode physics studies on TCV supported by the EUROfusion pedestal database

Publications associées (32)

Fluid-dynamic and thermo-mechanical analyses of the Monoblock Mitre Bend for the ITER electron cyclotron Upper launcher

Timothy Goodman, René Chavan, Avelino Mas Sanchez

The ITER Electron Cyclotron Heating (ECH) system will be used to counteract magneto-hydrodynamic plasma instabilities by aiming up to 20 MW of mm-wave power at 170 GHz. The primary vacuum boundary at the Electron Cyclotron Upper Launcher (EC UL) extends in ...

ELSEVIER SCIENCE SA2021

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To reach fusion conditions and control the plasma configuration in ITER, the next step in tokamak fusion research, two neutral beam injectors (NBIs) will supply 16.5 MW each, by neutralizing accelerated negative hydrogen or deuterium ions. The requirements ...

2021

Physics and applications of three-ion ICRF scenarios for fusion research

Henri Weisen, Javier García Hernández, Mikhail Maslov, Samuele Mazzi

This paper summarizes the physical principles behind the novel three-ion scenarios using radio frequency waves in the ion cyclotron range of frequencies (ICRF). We discuss how to transform mode conversion electron heating into a new flexible ICRF technique ...

AMER INST PHYSICS2021

RAMI evaluation of the beam source for the DEMO neutral beam injectors

Minh Quang Tran

DEMO is a first-of-a-kind DEMOnstration fusion power plant [1,2] and is intended to follow the ITER experimental reactor. The main goal of DEMO will be to demonstrate the possibility to produce electric energy for the grid from the fusion reaction early in ...

2020

Beam duct for the 1 MW neutral beam injector on TCV

Basil Duval, Stefano Coda, Yves Martin, Alexander Karpushov, Matthieu Toussaint, Frédéric Dolizy, Roberto Maurizio

The 1MW power of the neutral beam injector (NBI) enters the plasma of the Tokamak a Configuration Variable (TCV) through a duct. The original beam propagation model predicted a maximal heat flux on the internal faces of the duct below 350 kW/m(2), leading ...

2020

Extension of the operating space of high-beta(N) fully non-inductive scenarios on TCV using neutral beam injection

Olivier Sauter, Timothy Goodman, Duccio Testa, Alexander Karpushov, Antoine Pierre Emmanuel Alexis Merle, Mengdi Kong, Javier García Hernández, Matteo Vallar, Leonardo Pigatto

The fully non-inductive sustainment of high normalized beta plasmas (beta(N)) is a crucial challenge for the steady-state operation of a tokamak reactor. In order to assess the difficulties facing such scenarios, steady-state regimes have been explored on ...

2019

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A helicon-based plasma source is under development and exploration at CEA-IRFM to produce an efficient and dense magnetized plasma column. The final objective of this development is the extraction and acceleration of a blade-like negative ion beam in view ...

IOP PUBLISHING LTD2019

First B-dot measurements in the RAID device, an alternative negative ion source for DEMO neutral beams

Ivo Furno, Alan Howling, Philippe Frédérique Bruno Guittienne, Rémy Jacquier, Riccardo Agnello, Gennady Plyushchev, Claudio Marini

As a new concept of Neutral Beam Injectors (NBI) for DEMO-like reactors, SIPHORE (IRFM, CEA, in France) expects to extract negative deuterium ions and photo-neutralize the accelerated D-. The Swiss Plasma Center (SPC) of EPFL is involved in this project by ...

Elsevier B.V.2019

Non-linear simulations of neoclassical tearing mode control by externally driven RF current and heating, with application to ITER

Fabien Widmer

Neoclassical tearing modes (NTM) must be controlled or suppressed to prevent a degradation of the energy confinement in tokamak plasmas. This can be done applying RF-current via electron cyclotron current drive and -heating at the rational surface where th ...

2019

Modelling of JET hybrid plasmas with emphasis on performance of combined ICRF and NBI heating

Jonathan Graves, Javier García Hernández

During the 2015-2016 JET campaigns, many efforts have been devoted to the exploration of high-performance plasma scenarios envisaged for DT operation in JET. In this paper, we review various key recent hybrid discharges and model the combined ICRF+NBI heat ...

2018

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