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conference paper

On the criteria guiding the design of the upper electron-cyclotron launcher for ITER

Poli, E
•
Angioni, C
•
Casson, F J
Show more
Kubo, S.
2015
EPJ Web of Conferences
18th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating (EC-18)

Electron cyclotron waves injected from an antenna located in the upper part of the vessel will be employed in ITER to control MHD instabilities, particularly neoclassical tearingmodes (NTMs). The derivation of the NTM stabilization criteria used up to now to guide the optimization of the launcher is reviewed in this paper and their range of validity elucidated. Possible effects leading to a deterioration of the predicted performance through a broadening of the EC deposition profile are discussed. The most detrimental effect will likely be the scattering of the EC beams from density fluctuations, resulting in a beam broadening in the 100% range. The combined impact of these effects with that of beam misalignment (with respect to the targeted surface) is discussed for a time slice of the standard Q = 10 H-mode scenario.

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Type
conference paper
DOI
10.1051/epjconf/20158701008
Web of Science ID

WOS:000358327700008

Author(s)
Poli, E
•
Angioni, C
•
Casson, F J
•
Farina, D
•
Figini, L
•
Goodman, T P
•
Maj, O
•
Sauter, O
•
Weber, H
•
Zohm, H
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Editors
Kubo, S.
Date Issued

2015

Publisher

EDP Sciences

Published in
EPJ Web of Conferences
Volume

87

Start page

01008

Subjects

EC

•

ECH

•

ECCD

•

ITER

URL

URL

http://www.epj-conferences.org/articles/epjconf/abs/2015/06/contents/contents.html

URL

https://crpplocal.epfl.ch/pinboard/papers/143111501.pdf
Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
SPC  
Event nameEvent placeEvent date
18th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating (EC-18)

Nara, Japan

22-25 April 2014

Available on Infoscience
March 25, 2015
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/112739
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