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Optimization of magnetic perturbation spectra for the COMPASS tokamak
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SYSNO ASEP 0325695 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Optimization of magnetic perturbation spectra for the COMPASS tokamak Title Optimalizace spektra magnetických perturbací pro tokamak COMPASS Author(s) Cahyna, Pavel (UFP-V) RID
Pánek, Radomír (UFP-V) RID
Fuchs, Vladimír (UFP-V) RID
Krlín, Ladislav (UFP-V) RID
Bécoulet, M. (FR)
Huysmans, G. (FR)
Nardon, E. (GB)Source Title Proceedings of the 22nd IAEA Fusion Energy Conference. - Vienna : The International Atomic Energy Agency, 2009 - ISBN N Pages th/p9-7-1-th/p9-7-8 Number of pages 8 s. Publication form CD-ROM - CD-ROM Action IAEA Fusion Energy Conference/22nd./ Event date 13.10.2008-18.10.2008 VEvent location Geneva Country CH - Switzerland Event type WRD Language eng - English Country AT - Austria Keywords resonant magnetic perturbations ; ELM control ; magnetic islands ; saddle coils ; COMPASS tokamak Subject RIV BL - Plasma and Gas Discharge Physics CEZ AV0Z20430508 - UFP-V (2005-2011) UT WOS 000266508200025 Annotation The COMPASS tokamak, recently transferred from UKAEA Culham to IPP Prague, is equipped with a set of saddle coils for producing controlled resonant magnetic perturbations (RMPs). In the future experimental programme of COMPASS we plan to focus on studies of RMPs, especially in view of their application as an ELM control mechanism and their planned use in ITER. In the present contribution we describe the preparatory calculations for the planned experiments. We computed the spectra of perturbations for several different equilibra predicted by MHD simulations and determined the positions and sizes of the resulting islands. It is shown how the saddle coils of COMPASS can be adapted to our equilibria to obtain good island overlap at the edge, which is believed to be a key component in the ELM mitigation effect. Impact of the nonlinear plasma response on the perturbation field is discussed, using results of a cylindrical reduced MHD code. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2009
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