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  Control of the sawtooth instability by electron cyclotron heating and current drive in the TCV and ASDEX Upgrade tokamaks

Goodman, T. P., Mück, A., Angioni, C., Henderson, M. A., Sauter, O., Ryter, F., et al. (2003). Control of the sawtooth instability by electron cyclotron heating and current drive in the TCV and ASDEX Upgrade tokamaks. In Fusion Energy 2002. Vienna: International Atomic Energy Agency.

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 Creators:
Goodman, T. P.1, Author
Mück, A.2, Author           
Angioni, C.3, Author           
Henderson, M. A.1, Author
Sauter, O.1, Author
Ryter, F.4, Author           
Westerhof, E.1, Author
Zohm, H.5, Author           
ASDEX Upgrade Team, Author              
Affiliations:
1Centre de Recherches en Physique des Plasma, Ass. EURATOM-Confederation Suisse, EPFL, Lausanne, Switzerland; FOM-Instituut voor Plasmafysica Rijnhiuzen, Ass. EURATOM-FOM, TEC, Nieuwegein, NL, ou_persistent22              
2External Organizations, ou_persistent22              
3Tokamak Theory (TOK), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856309              
4Tokamak Edge and Divertor Physics (E2), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856308              
5Experimental Plasma Physics 2 (E2), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856292              

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 Abstract: Recently, there has been increased interest in avoiding the destabilization of neoclassical tearing modes (NTMs) by controlling the sawtooth instability which frequently provides a large enough seed island to trigger the growth of the NTM. Electron cyclotron heating (ECH) and current drive (ECCD) are prime candidates for such control as the all important deposition location can be adjusted using external control parameters alone. Sawtooth control studies have been carried out on the Tokamak à Configuration Variable (TCV) and ASDEX Upgrade tokamaks. The experiments and subsequent sawtooth period modeling help to determine the optimum locations for sawtooth period control and understand the mechanism by which this control is attained.

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Language(s): eng - English
 Dates: 2003
 Publication Status: Issued
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 Rev. Type: Internal
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Title: 19th Fusion Energy Conference
Place of Event: Lyon (FR)
Start-/End Date: 2002-10-14 - 2002-10-19

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Title: Fusion Energy 2002
Source Genre: Proceedings
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Publ. Info: Vienna : International Atomic Energy Agency
Pages: CD-ROM Volume / Issue: - Sequence Number: EX/P5-11 Start / End Page: - Identifier: -