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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 7 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 1 | - |
dc.citation.title | NUCLEAR FUSION | - |
dc.citation.volume | 55 | - |
dc.contributor.author | Choe, Gyuenghyuen | - |
dc.contributor.author | Yun, Gunsu | - |
dc.contributor.author | Nam, Yoonbum | - |
dc.contributor.author | Lee, Woochang | - |
dc.contributor.author | Park, Hyeon Keo | - |
dc.contributor.author | Bierwage, Andreas | - |
dc.contributor.author | Domier, Calvin W. | - |
dc.contributor.author | Luhmann, N. C., Jr | - |
dc.contributor.author | Jeong, J.H. | - |
dc.contributor.author | Bae, Youngsoon | - |
dc.date.accessioned | 2023-12-22T01:43:43Z | - |
dc.date.available | 2023-12-22T01:43:43Z | - |
dc.date.created | 2015-01-26 | - |
dc.date.issued | 2015-01 | - |
dc.description.abstract | Multiple (two or more) flux tubes are commonly observed inside and/or near the q = 1 flux surface in KSTAR tokamak plasmas with localized electron cyclotron resonance heating and current drive (ECH/CD). Detailed 2D and quasi-3D images of the flux tubes obtained by an advanced imaging diagnostic system showed that the flux tubes are m/n = 1/1 field-aligned structures co-rotating around the magnetic axis. The flux tubes typically merge together and become like the internal kink mode of the usual sawtooth, which then collapses like a usual sawtooth crash. A systematic scan of ECH/CD beam position showed a strong correlation with the number of flux tubes. In the presence of multiple flux tubes close to the q = 1 surface, the radially outward heat transport was enhanced, which explains naturally temporal changes of electron temperature. We emphasize that the multiple flux tubes are a universal feature distinct from the internal kink instability and play a critical role in the control of sawteeth using ECH/CD. | - |
dc.identifier.bibliographicCitation | NUCLEAR FUSION, v.55, no.1, pp.1 - 7 | - |
dc.identifier.doi | 10.1088/0029-5515/55/1/013015 | - |
dc.identifier.issn | 0029-5515 | - |
dc.identifier.scopusid | 2-s2.0-84920842558 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/10323 | - |
dc.identifier.url | https://iopscience.iop.org/article/10.1088/0029-5515/55/1/013015 | - |
dc.identifier.wosid | 000357595900009 | - |
dc.language | 영어 | - |
dc.publisher | INT ATOMIC ENERGY AGENCY | - |
dc.title | Dynamics of multiple flux tubes in sawtoothing KSTAR plasmas heated by electron cyclotron waves: I. Experimental analysis of the tube structure | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Physics, Fluids & Plasmas | - |
dc.relation.journalResearchArea | Physics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | magnetohydrodynamics | - |
dc.subject.keywordAuthor | microwave measurements | - |
dc.subject.keywordAuthor | plasma heating by microwaves | - |
dc.subject.keywordAuthor | tokamak | - |
dc.subject.keywordPlus | CURRENT DRIVE | - |
dc.subject.keywordPlus | OSCILLATIONS | - |
dc.subject.keywordPlus | PERIOD | - |
dc.subject.keywordPlus | MODEL | - |
dc.subject.keywordPlus | TCV | - |
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