DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choe, GH | - |
dc.contributor.author | Yun, GS | - |
dc.contributor.author | Nam, Y | - |
dc.contributor.author | Lee, W | - |
dc.contributor.author | Park, HK | - |
dc.contributor.author | Bierwage, A | - |
dc.contributor.author | Domier, CW | - |
dc.contributor.author | Luhmann, NC | - |
dc.contributor.author | Jeong, JH | - |
dc.contributor.author | Bae, YS | - |
dc.date.accessioned | 2017-07-19T12:29:59Z | - |
dc.date.available | 2017-07-19T12:29:59Z | - |
dc.date.created | 2015-02-10 | - |
dc.date.issued | 2015-01 | - |
dc.identifier.issn | 0029-5515 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/35912 | - |
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.language | English | - |
dc.publisher | IOP Publishing | - |
dc.relation.isPartOf | NUCLEAR FUSION | - |
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.identifier.doi | 10.1088/0029-5515/55/1/013015 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | NUCLEAR FUSION, v.55, no.1, pp.13015 | - |
dc.identifier.wosid | 000357595900009 | - |
dc.date.tcdate | 2019-03-01 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 13015 | - |
dc.citation.title | NUCLEAR FUSION | - |
dc.citation.volume | 55 | - |
dc.contributor.affiliatedAuthor | Choe, GH | - |
dc.contributor.affiliatedAuthor | Yun, GS | - |
dc.identifier.scopusid | 2-s2.0-84920842558 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 8 | - |
dc.description.scptc | 6 | * |
dc.date.scptcdate | 2018-05-121 | * |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article; Proceedings Paper | - |
dc.subject.keywordPlus | CURRENT DRIVE | - |
dc.subject.keywordPlus | OSCILLATIONS | - |
dc.subject.keywordPlus | PERIOD | - |
dc.subject.keywordPlus | MODEL | - |
dc.subject.keywordPlus | TCV | - |
dc.subject.keywordAuthor | tokamak | - |
dc.subject.keywordAuthor | magnetohydrodynamics | - |
dc.subject.keywordAuthor | plasma heating by microwaves | - |
dc.subject.keywordAuthor | microwave measurements | - |
dc.relation.journalWebOfScienceCategory | Physics, Fluids & Plasmas | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Physics | - |
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