Community Research and Development Information Service - CORDIS

Abstract

Electron cyclotron current drive (ECCD) is an important prospective tool for tailoring the current profile in next-step devices. To fill the remaining gaps between ECCD theory and experiment, especially in the efficiency and localisation of current drive, a better understanding of the physics of Suprathermal electrons appears necessary. On TCV, the fast electron population is diagnosed by a multichordal, spectrometric hard X-ray camera and by a high field side ECE radiometer. The main modelling tool is the quasi-linear Fokker-Planck code CQL3D, which is equipped with a radial particle transport model. Systematic studies of fast electron dynamics have been performed in TCV with modulated or pulsed electron cyclotron power, followed by coherent averaging, in order to identify the roles of collisional relaxation and radial transport in the dynamics of the Suprathermal population. A consistent picture is emerging from experiment and modelling, pointing to the crucial role of the radial transport of Suprathermal electrons in the physics of ECCD.

Additional information

Authors: MAUBORGNE R, INSEAD, Fontainebleu (FR)
Bibliographic Reference: A paper published in the proceedings of the Third European Forum for Innovative Enterprises, Stockholm, April 2002. EUR 17050 EN (2002), pp.35-40. Free of charge
Availability: Available from European Commission, Enterprise DG, Documentation Centre Fax: (+32 2) 29 69930 E-mail: info-entreprises@ec.europa.eu
ISBN: ISBN: 92-894-4147-X
Record Number: 200315819 / Last updated on: 2003-02-17
Category: PUBLICATION
Original language: en
Available languages: en