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Studies of the non-axisymmetric plasma boundary displacement in JET in presence of externally applied magnetic field
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.ORCID iD: 0000-0002-9546-4494
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2015 (English)In: Plasma Physics and Controlled Fusion, ISSN 0741-3335, E-ISSN 1361-6587, Vol. 57, no 10, 104003Article in journal (Refereed) Published
Abstract [en]

Non-axisymmetric plasma boundary displacement is caused by the application of the external magnetic field with low toroidal mode number. Such displacement affects edge stability, power load on the first wall and could affect efficiency of the ICRH coupling in ITER. Studies of the displacement are presented for JET tokamak focusing on the interaction between error field correction coils (EFCCs) and shape control system. First results are shown on the direct measurement of the plasma boundary displacement at different toroidal locations. Both qualitative and quantitative studies of the plasma boundary displacement caused by interaction between EFCCs and shape control system are performed for different toroidal phases of the external field. Axisymmetric plasma boundary displacement caused by the EFCC/shape control system interaction is seen for certain phase values of the external field. The value of axisymmetric plasma boundary displacement caused by interaction can be comparable to the non-axisymmetric plasma boundary displacement value produced by EFCCs.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2015. Vol. 57, no 10, 104003
Keyword [en]
externally applied magnetic field, interaction with plasma control system, non-axisymmetric plasma boundary displacement, Control systems, Fighter aircraft, Magnetic fields, Magnetism, Tokamak devices, Applied magnetic fields, Axisymmetric plasmas, Direct measurement, External magnetic field, Plasma control systems, Quantitative study, System interactions, Toroidal mode numbers, Magnetoplasma
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-177744DOI: 10.1088/0741-3335/57/10/104003ISI: 000366679100004Scopus ID: 2-s2.0-84940840074OAI: oai:DiVA.org:kth-177744DiVA: diva2:875144
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QC 20151130

Available from: 2015-11-30 Created: 2015-11-25 Last updated: 2017-12-01Bibliographically approved

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Frassinetti, Lorenzo

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  • apa
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