Matches in SemOpenAlex for { <https://semopenalex.org/work/W4310178207> ?p ?o ?g. }
Showing items 1 to 98 of
98
with 100 items per page.
- W4310178207 endingPage "035203" @default.
- W4310178207 startingPage "035203" @default.
- W4310178207 abstract "In order to explore the conductive wall effect of plasma magnetohydrodynamic (MHD) instability and the wall designing idea, the various forms of ideal conductive walls based on divertor equilibrium configurations in the HL-2A Tokamak and their role in suppressing kink modes are studied. The MHD instabilities and the ideal MHD operational <i>β</i> limits under free boundary or ideal wall conditions are compared. In the stability calculation, <i>n</i> = 1 kink mode is considered, which has a decisive influence on the MHD instability of Tokamak plasma. The research focuses on verifying the effectiveness of various shapes of conductive walls in suppressing internal and external kink modes, and observing the operational <i>β</i> limit changes, and discussing and analyzing related physics. It is found that an ideal conducting wall placed at a suitable distance from the plasma can effectively suppress the external kink modes. Under the condition that the average distance between the wall and the plasma surface is the same and small enough, the circular cross-section wall is not necessarily the best option. Setting an optimized polygonal conductive wall can more effectively suppress the MHD instability. It makes the ideal MHD operational <i>β</i> limit of the device, <i>β</i><sub><i>N</i></sub>, increase to 2.73, which is about 6.5% higher than that for the device with a wall assumed to be set at infinity (<inline-formula><tex-math id=Z-20230129122243-1>begin{document}$ sim $end{document}</tex-math><alternatives><graphic xmlns:xlink=http://www.w3.org/1999/xlink xlink:href=3-20222043_Z-20230129122243-1.jpg/><graphic xmlns:xlink=http://www.w3.org/1999/xlink xlink:href=3-20222043_Z-20230129122243-1.png/></alternatives></inline-formula>2.56). This implies that it is necessary to optimize and make a polygonal conductive wall as close as possible to the average distance from the plasma surface according to the poloidal-section shape of the elongated and shaped plasma, so as to achieve the suppression of external kink mode and increase the operational <i>β</i> limits. The physical mechanism of the stabilizing effect of the ideal wall on external kink modes is analyzed. With the development of the kink mode, when the plasma column is twisted closely to the wall, the plasma column will squeeze the magnetic field in the vacuum area, making the magnetic field line compressed and bent. At this time, the magnetic pressure and the component force of the magnetic tension in the opposite direction of the radial direction push the plasma back, thus stabilizing the kink mode. Finally, a conclusion is given." @default.
- W4310178207 created "2022-11-30" @default.
- W4310178207 creator A5009609749 @default.
- W4310178207 creator A5029098931 @default.
- W4310178207 creator A5030239713 @default.
- W4310178207 creator A5066697803 @default.
- W4310178207 creator A5077523441 @default.
- W4310178207 date "2023-01-01" @default.
- W4310178207 modified "2023-10-16" @default.
- W4310178207 title "Ideal conductive wall and magnetohydrodynamic instability in Tokamak" @default.
- W4310178207 cites W1964164594 @default.
- W4310178207 cites W1972228749 @default.
- W4310178207 cites W1974412107 @default.
- W4310178207 cites W1997590095 @default.
- W4310178207 cites W2000378128 @default.
- W4310178207 cites W2008012316 @default.
- W4310178207 cites W2009776912 @default.
- W4310178207 cites W2028654041 @default.
- W4310178207 cites W2029416864 @default.
- W4310178207 cites W2033351491 @default.
- W4310178207 cites W2038720127 @default.
- W4310178207 cites W2040112079 @default.
- W4310178207 cites W2043020412 @default.
- W4310178207 cites W2043770926 @default.
- W4310178207 cites W2046162424 @default.
- W4310178207 cites W2052475210 @default.
- W4310178207 cites W2080854045 @default.
- W4310178207 cites W2081965316 @default.
- W4310178207 cites W2098039657 @default.
- W4310178207 cites W2108324674 @default.
- W4310178207 cites W2139653975 @default.
- W4310178207 cites W2149131699 @default.
- W4310178207 cites W2158268817 @default.
- W4310178207 cites W2216104499 @default.
- W4310178207 cites W2737530474 @default.
- W4310178207 cites W2784053729 @default.
- W4310178207 cites W3009968272 @default.
- W4310178207 cites W3047723548 @default.
- W4310178207 cites W4285089364 @default.
- W4310178207 doi "https://doi.org/10.7498/aps.72.20222043" @default.
- W4310178207 hasPublicationYear "2023" @default.
- W4310178207 type Work @default.
- W4310178207 citedByCount "0" @default.
- W4310178207 crossrefType "journal-article" @default.
- W4310178207 hasAuthorship W4310178207A5009609749 @default.
- W4310178207 hasAuthorship W4310178207A5029098931 @default.
- W4310178207 hasAuthorship W4310178207A5030239713 @default.
- W4310178207 hasAuthorship W4310178207A5066697803 @default.
- W4310178207 hasAuthorship W4310178207A5077523441 @default.
- W4310178207 hasBestOaLocation W43101782071 @default.
- W4310178207 hasConcept C111472728 @default.
- W4310178207 hasConcept C116515362 @default.
- W4310178207 hasConcept C121332964 @default.
- W4310178207 hasConcept C138885662 @default.
- W4310178207 hasConcept C202374169 @default.
- W4310178207 hasConcept C207821765 @default.
- W4310178207 hasConcept C2776639384 @default.
- W4310178207 hasConcept C2777017188 @default.
- W4310178207 hasConcept C2779205237 @default.
- W4310178207 hasConcept C31532427 @default.
- W4310178207 hasConcept C42471609 @default.
- W4310178207 hasConcept C57879066 @default.
- W4310178207 hasConcept C62520636 @default.
- W4310178207 hasConcept C82706917 @default.
- W4310178207 hasConceptScore W4310178207C111472728 @default.
- W4310178207 hasConceptScore W4310178207C116515362 @default.
- W4310178207 hasConceptScore W4310178207C121332964 @default.
- W4310178207 hasConceptScore W4310178207C138885662 @default.
- W4310178207 hasConceptScore W4310178207C202374169 @default.
- W4310178207 hasConceptScore W4310178207C207821765 @default.
- W4310178207 hasConceptScore W4310178207C2776639384 @default.
- W4310178207 hasConceptScore W4310178207C2777017188 @default.
- W4310178207 hasConceptScore W4310178207C2779205237 @default.
- W4310178207 hasConceptScore W4310178207C31532427 @default.
- W4310178207 hasConceptScore W4310178207C42471609 @default.
- W4310178207 hasConceptScore W4310178207C57879066 @default.
- W4310178207 hasConceptScore W4310178207C62520636 @default.
- W4310178207 hasConceptScore W4310178207C82706917 @default.
- W4310178207 hasIssue "3" @default.
- W4310178207 hasLocation W43101782071 @default.
- W4310178207 hasOpenAccess W4310178207 @default.
- W4310178207 hasPrimaryLocation W43101782071 @default.
- W4310178207 hasRelatedWork W1976159206 @default.
- W4310178207 hasRelatedWork W1986117848 @default.
- W4310178207 hasRelatedWork W2021662771 @default.
- W4310178207 hasRelatedWork W2040396338 @default.
- W4310178207 hasRelatedWork W2124197585 @default.
- W4310178207 hasRelatedWork W2801392489 @default.
- W4310178207 hasRelatedWork W3101018645 @default.
- W4310178207 hasRelatedWork W4254202973 @default.
- W4310178207 hasRelatedWork W4310178207 @default.
- W4310178207 hasRelatedWork W2518512317 @default.
- W4310178207 hasVolume "72" @default.
- W4310178207 isParatext "false" @default.
- W4310178207 isRetracted "false" @default.
- W4310178207 workType "article" @default.
%20instability%20and%20the%20wall%20designing%20idea%2C%20the%20various%20forms%20of%20ideal%20conductive%20walls%20based%20on%20divertor%20equilibrium%20configurations%20in%20the%20HL-2A%20Tokamak%20and%20their%20role%20in%20suppressing%20kink%20modes%20are%20studied.%20The%20MHD%20instabilities%20and%20the%20ideal%20MHD%20operational%20%26lt%3Bi%26gt%3B%CE%B2%26lt%3B%2Fi%26gt%3B%20limits%20under%20free%20boundary%20or%20ideal%20wall%20conditions%20are%20compared.%20In%20the%20stability%20calculation%2C%20%26lt%3Bi%26gt%3Bn%26lt%3B%2Fi%26gt%3B%20%3D%201%20kink%20mode%20is%20considered%2C%20which%20has%20a%20decisive%20influence%20on%20the%20MHD%20instability%20of%20Tokamak%20plasma.%20The%20research%20focuses%20on%20verifying%20the%20effectiveness%20of%20various%20shapes%20of%20conductive%20walls%20in%20suppressing%20internal%20and%20external%20kink%20modes%2C%20and%20observing%20the%20operational%20%26lt%3Bi%26gt%3B%CE%B2%26lt%3B%2Fi%26gt%3B%20limit%20changes%2C%20and%20discussing%20and%20analyzing%20related%20physics.%20It%20is%20found%20that%20an%20ideal%20conducting%20wall%20placed%20at%20a%20suitable%20distance%20from%20the%20plasma%20can%20effectively%20suppress%20the%20external%20kink%20modes.%20Under%20the%20condition%20that%20the%20average%20distance%20between%20the%20wall%20and%20the%20plasma%20surface%20is%20the%20same%20and%20small%20enough%2C%20the%20circular%20cross-section%20wall%20is%20not%20necessarily%20the%20best%20option.%20Setting%20an%20optimized%20polygonal%20conductive%20wall%20can%20more%20effectively%20suppress%20the%20MHD%20instability.%20It%20makes%20the%20ideal%20MHD%20operational%20%26lt%3Bi%26gt%3B%CE%B2%26lt%3B%2Fi%26gt%3B%20limit%20of%20the%20device%2C%20%26lt%3Bi%26gt%3B%CE%B2%26lt%3B%2Fi%26gt%3B%26lt%3Bsub%26gt%3B%26lt%3Bi%26gt%3BN%26lt%3B%2Fi%26gt%3B%26lt%3B%2Fsub%26gt%3B%2C%20increase%20to%202.73%2C%20which%20is%20about%206.5%25%20higher%20than%20that%20for%20the%20device%20with%20a%20wall%20assumed%20to%20be%20set%20at%20infinity%20(%26lt%3Binline-formula%26gt%3B%26lt%3Btex-math%20id%3DZ-20230129122243-1%26gt%3Bbegin%7Bdocument%7D%24%20sim%20%24end%7Bdocument%7D%26lt%3B%2Ftex-math%26gt%3B%26lt%3Balternatives%26gt%3B%26lt%3Bgraphic%20xmlns%3Axlink%3Dhttp%3A%2F%2Fwww.w3.org%2F1999%2Fxlink%20xlink%3Ahref%3D3-20222043_Z-20230129122243-1.jpg%2F%26gt%3B%26lt%3Bgraphic%20xmlns%3Axlink%3Dhttp%3A%2F%2Fwww.w3.org%2F1999%2Fxlink%20xlink%3Ahref%3D3-20222043_Z-20230129122243-1.png%2F%26gt%3B%26lt%3B%2Falternatives%26gt%3B%26lt%3B%2Finline-formula%26gt%3B2.56).%20This%20implies%20that%20it%20is%20necessary%20to%20optimize%20and%20make%20a%20polygonal%20conductive%20wall%20as%20close%20as%20possible%20to%20the%20average%20distance%20from%20the%20plasma%20surface%20according%20to%20the%20poloidal-section%20shape%20of%20the%20elongated%20and%20shaped%20plasma%2C%20so%20as%20to%20achieve%20the%20suppression%20of%20external%20kink%20mode%20and%20increase%20the%20operational%20%26lt%3Bi%26gt%3B%CE%B2%26lt%3B%2Fi%26gt%3B%20limits.%20The%20physical%20mechanism%20of%20the%20stabilizing%20effect%20of%20the%20ideal%20wall%20on%20external%20kink%20modes%20is%20analyzed.%20With%20the%20development%20of%20the%20kink%20mode%2C%20when%20the%20plasma%20column%20is%20twisted%20closely%20to%20the%20wall%2C%20the%20plasma%20column%20will%20squeeze%20the%20magnetic%20field%20in%20the%20vacuum%20area%2C%20making%20the%20magnetic%20field%20line%20compressed%20and%20bent.%20At%20this%20time%2C%20the%20magnetic%20pressure%20and%20the%20component%20force%20of%20the%20magnetic%20tension%20in%20the%20opposite%20direction%20of%20the%20radial%20direction%20push%20the%20plasma%20back%2C%20thus%20stabilizing%20the%20kink%20mode.%20Finally%2C%20a%20conclusion%20is%20given.%22){kind=link}