Publication

Global and local gyrokinetic simulations of high-performance discharges in view of ITER

Olivier Sauter, Laurent Villard, Stephan Brunner
2013
Journal Articles

Abstract

One of the key challenges for plasma theory and simulation in view of ITER is to enhance the understanding and predictive capability concerning high-performance discharges. This involves, in particular, questions about high-beta operation, ion temperature profile stiffness, and the physics of transport barriers. The goal of this contribution is to shed light on these issues by means of physically comprehensive ab initio simulations with the global gyrokinetic code GENE, applied to discharges in TCV, ASDEX Upgrade, and JET-with direct relevance to ITER.

Official source

https://infoscience.epfl.ch/entities/publication/57a339ae-29c3-4490-88e6-b83a644e396d

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Olivier Sauter, Laurent Villard, Stephan Brunner
2013
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/57a339ae-29c3-4490-88e6-b83a644e396d

About this result

Related concepts (10)

Corona discharge

A corona discharge is an electrical discharge caused by the ionization of a fluid such as air surrounding a conductor carrying a high voltage. It represents a local region where the air (or other fluid) has undergone electrical breakdown and become conductive, allowing charge to continuously leak off the conductor into the air. A corona discharge occurs at locations where the strength of the electric field (potential gradient) around a conductor exceeds the dielectric strength of the air.

Electrostatic discharge

Electrostatic discharge (ESD) is a sudden and momentary flow of electric current between two electrically charged objects caused by contact, an electrical short or dielectric breakdown. A buildup of static electricity can be caused by tribocharging or by electrostatic induction. The ESD occurs when differently-charged objects are brought close together or when the dielectric between them breaks down, often creating a visible spark.

Dielectric barrier discharge

Dielectric-barrier discharge (DBD) is the electrical discharge between two electrodes separated by an insulating dielectric barrier. Originally called silent (inaudible) discharge and also known as ozone production discharge or partial discharge, it was first reported by Ernst Werner von Siemens in 1857. The process normally uses high voltage alternating current, ranging from lower RF to microwave frequencies. However, other methods were developed to extend the frequency range all the way down to the DC.

Related publications (28)

Global and local gyrokinetic simulations of high-performance discharges in view of ITER

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