The toroidicity-induced Alfvén eigenmode structure in DIII-D: Implications of soft x-ray and beam-ion loss data
The internal structure of the toroidicity-induced Alfvén eigenmode (TAE) is studied by comparing soft x-ray profile and beam ion loss data taken during TAE activity in the DIII-D tokamak [W. W. Heidbrink et al., Nucl. Fusion 37, 1411 (1997)] with predictions from theories based on ideal magnetohydro...
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| Veröffentlicht in: | Physics of plasmas 2001-07, Vol.8 (7), p.3391-3401 |
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| container_title | Physics of plasmas |
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| creator | Carolipio, E. M. Heidbrink, W. W. Cheng, C. Z. Chu, M. S. Fu, G. Y. Jaun, A. Spong, D. A. Turnbull, A. D. White, R. B. |
| description | The internal structure of the toroidicity-induced Alfvén eigenmode (TAE) is studied by comparing soft x-ray profile and beam ion loss data taken during TAE activity in the DIII-D tokamak [W. W. Heidbrink et al., Nucl. Fusion 37, 1411 (1997)] with predictions from theories based on ideal magnetohydrodynamic (MHD), gyrofluid, and gyrokinetic models. The soft x-ray measurements indicate a centrally peaked eigenfunction, a feature which is closest to the gyrokinetic model’s prediction. The beam ion losses are simulated using a guiding center code. In the simulations, the TAE eigenfunction calculated using the ideal MHD model acts as a perturbation to the equilibrium field. The predicted beam ion losses are an order of magnitude less than the observed ∼6%–8% losses at the peak experimental amplitude of
δB
r
/B
0
≃2–5×10
−4
. |
| doi_str_mv | 10.1063/1.1378066 |
| format | Article |
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δB
r
/B
0
≃2–5×10
−4
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δB
r
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0
≃2–5×10
−4
.</description><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</subject><subject>AMPLITUDES</subject><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</subject><subject>d tokamak</subject><subject>deuterium-tritium plasmas</subject><subject>DOUBLET-3 DEVICE</subject><subject>driven instabilities</subject><subject>EIGENFUNCTIONS</subject><subject>energetic particle-transport</subject><subject>FORECASTING</subject><subject>fusion test reactor</subject><subject>joint european torus</subject><subject>MAGNETOHYDRODYNAMICS</subject><subject>modes</subject><subject>neutral beam</subject><subject>stability</subject><subject>tftr</subject><issn>1070-664X</issn><issn>1089-7674</issn><issn>1089-7674</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><recordid>eNqdkM1KAzEURgdRsFYXvkHAlWJq0pkmM-5K68-A4KaKu5BJbtpoOxmStNpH8jl8Mae26N7V_eAePu49SXJKSY8Sll7RHk15ThjbSzqU5AXmjGf7m8wJZix7OUyOQnglhGRskHeSZjIDFJ13Vltl4xrbWi8VaDScm9XXZ43ATqFeOA0oRL9UcekB2RqNy7LE42tULpq5VTJaVwfkDArORPSBvVwjWWtUgVzgdofmLgSkZZTHyYGR8wAnu9lNnm5vJqN7_PB4V46GD1ilBY9Ya5MWmQGSDVhVASkkUawvochzCjllXCsNVHNWAR9oCRU1nOus0roPhSGDtJtcbnvDOzTLSjTeLqRfCyetGNvnoXB-Kt7iTPQJz9IWP9viLkQrQqsC1Ey5ugYVRUb6nOfphjrfUsq3_3gwv7WUiI1_QcXOf8te7A5oy34E_Q9eOf8Hiqb18g0G95YH</recordid><startdate>20010701</startdate><enddate>20010701</enddate><creator>Carolipio, E. M.</creator><creator>Heidbrink, W. W.</creator><creator>Cheng, C. Z.</creator><creator>Chu, M. S.</creator><creator>Fu, G. Y.</creator><creator>Jaun, A.</creator><creator>Spong, D. A.</creator><creator>Turnbull, A. D.</creator><creator>White, R. B.</creator><general>The American Physical Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope><scope>ADTPV</scope><scope>AOWAS</scope><scope>D8V</scope></search><sort><creationdate>20010701</creationdate><title>The toroidicity-induced Alfvén eigenmode structure in DIII-D: Implications of soft x-ray and beam-ion loss data</title><author>Carolipio, E. M. ; Heidbrink, W. W. ; Cheng, C. Z. ; Chu, M. S. ; Fu, G. Y. ; Jaun, A. ; Spong, D. A. ; Turnbull, A. D. ; White, R. 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M.</creatorcontrib><creatorcontrib>Heidbrink, W. W.</creatorcontrib><creatorcontrib>Cheng, C. Z.</creatorcontrib><creatorcontrib>Chu, M. S.</creatorcontrib><creatorcontrib>Fu, G. Y.</creatorcontrib><creatorcontrib>Jaun, A.</creatorcontrib><creatorcontrib>Spong, D. A.</creatorcontrib><creatorcontrib>Turnbull, A. D.</creatorcontrib><creatorcontrib>White, R. B.</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><collection>SwePub</collection><collection>SwePub Articles</collection><collection>SWEPUB Kungliga Tekniska Högskolan</collection><jtitle>Physics of plasmas</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Carolipio, E. M.</au><au>Heidbrink, W. W.</au><au>Cheng, C. Z.</au><au>Chu, M. S.</au><au>Fu, G. Y.</au><au>Jaun, A.</au><au>Spong, D. A.</au><au>Turnbull, A. D.</au><au>White, R. B.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The toroidicity-induced Alfvén eigenmode structure in DIII-D: Implications of soft x-ray and beam-ion loss data</atitle><jtitle>Physics of plasmas</jtitle><date>2001-07-01</date><risdate>2001</risdate><volume>8</volume><issue>7</issue><spage>3391</spage><epage>3401</epage><pages>3391-3401</pages><issn>1070-664X</issn><issn>1089-7674</issn><eissn>1089-7674</eissn><coden>PHPAEN</coden><abstract>The internal structure of the toroidicity-induced Alfvén eigenmode (TAE) is studied by comparing soft x-ray profile and beam ion loss data taken during TAE activity in the DIII-D tokamak [W. W. Heidbrink et al., Nucl. Fusion 37, 1411 (1997)] with predictions from theories based on ideal magnetohydrodynamic (MHD), gyrofluid, and gyrokinetic models. The soft x-ray measurements indicate a centrally peaked eigenfunction, a feature which is closest to the gyrokinetic model’s prediction. The beam ion losses are simulated using a guiding center code. In the simulations, the TAE eigenfunction calculated using the ideal MHD model acts as a perturbation to the equilibrium field. The predicted beam ion losses are an order of magnitude less than the observed ∼6%–8% losses at the peak experimental amplitude of
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| subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY AMPLITUDES CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY d tokamak deuterium-tritium plasmas DOUBLET-3 DEVICE driven instabilities EIGENFUNCTIONS energetic particle-transport FORECASTING fusion test reactor joint european torus MAGNETOHYDRODYNAMICS modes neutral beam stability tftr |
| title | The toroidicity-induced Alfvén eigenmode structure in DIII-D: Implications of soft x-ray and beam-ion loss data |
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