Electron-cyclotron wave scattering by edge density fluctuations in ITER

Tsironis, C; Peeters, AG; Isliker, H; Strintzi, D; Chatziantonaki, I; Vlahos, L

dc.contributor.author	Tsironis, C	en
dc.contributor.author	Peeters, AG	en
dc.contributor.author	Isliker, H	en
dc.contributor.author	Strintzi, D	en
dc.contributor.author	Chatziantonaki, I	en
dc.contributor.author	Vlahos, L	en
dc.date.accessioned	2014-03-01T01:30:20Z
dc.date.available	2014-03-01T01:30:20Z
dc.date.issued	2009	en
dc.identifier.issn	1070-664X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19552
dc.subject.classification	Physics, Fluids & Plasmas	en
dc.subject.other	Current drives	en
dc.subject.other	Density fluctuation	en
dc.subject.other	Diffusion Coefficients	en
dc.subject.other	Edge densities	en
dc.subject.other	Edge turbulence	en
dc.subject.other	Electron cyclotron current drive	en
dc.subject.other	Electron cyclotrons	en
dc.subject.other	ITER design	en
dc.subject.other	Localized heating	en
dc.subject.other	Neoclassical tearing modes	en
dc.subject.other	Ray-tracing codes	en
dc.subject.other	Resonance layers	en
dc.subject.other	Scattering angles	en
dc.subject.other	Small angle scattering	en
dc.subject.other	Wave scattering	en
dc.subject.other	Cyclotron radiation	en
dc.subject.other	Cyclotrons	en
dc.subject.other	Electromagnetic waves	en
dc.subject.other	Electron beams	en
dc.subject.other	Electron cyclotron resonance	en
dc.subject.other	Experimental reactors	en
dc.subject.other	Fokker Planck equation	en
dc.subject.other	Fusion reactions	en
dc.subject.other	Plasma waves	en
dc.subject.other	Electromagnetic wave scattering	en
dc.title	Electron-cyclotron wave scattering by edge density fluctuations in ITER	en
heal.type	journalArticle	en
heal.identifier.primary	10.1063/1.3264105	en
heal.identifier.secondary	http://dx.doi.org/10.1063/1.3264105	en
heal.identifier.secondary	112510	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	The effect of edge turbulence on the electron-cyclotron wave propagation in ITER is investigated with emphasis on wave scattering, beam broadening, and its influence on localized heating and current drive. A wave used for electron-cyclotron current drive (ECCD) must cross the edge of the plasma, where density fluctuations can be large enough to bring on wave scattering. The scattering angle due to the density fluctuations is small, but the beam propagates over a distance of several meters tip to the resonance layer and even small angle scattering leads to a deviation of several centimeters at the deposition location. Since the localization of ECCD is crucial for the control of neoclassical tearing modes, this issue is of great importance to the ITER design. The wave scattering process is described oil the basis of a Fokker-Planck equation, where the diffusion coefficient is calculated analytically as well as computed numerically using a ray tracing code. (C) 2009 American Institute of Physics. [doi:10.1063/1.3264105]	en
heal.publisher	AMER INST PHYSICS	en
heal.journalName	Physics of Plasmas	en
dc.identifier.doi	10.1063/1.3264105	en
dc.identifier.isi	ISI:000272932100031	en
dc.identifier.volume	16	en
dc.identifier.issue	11	en
dc.identifier.spage	112510	en