A theory for the pressure pedestal in high (H) mode tokamak discharges
When a tokamak plasma makes a transition into the good or the high confinement H mode, the edge density and pressure steepen and develop a very sharp pressure pedestal. Prediction of the height and width of this pressure profile has been actively pursued so as to provide a reliable extrapolation to...
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| Veröffentlicht in: | Physics of plasmas 2005-03, Vol.12 (3), p.032502-032502-6 |
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| container_title | Physics of plasmas |
| container_volume | 12 |
| creator | Guzdar, P. N. Mahajan, S. M. Yoshida, Z. |
| description | When a tokamak plasma makes a transition into the good or the high confinement H mode, the edge density and pressure steepen and develop a very sharp pressure pedestal. Prediction of the height and width of this pressure profile has been actively pursued so as to provide a reliable extrapolation to future burning plasma devices. The double-Beltrami two-fluid equilibria of Mahajan and Yoshida [Phys. Plasmas
7, 635 (2000)] are invoked and extended to derive scalings for the edge pedestal width and height with plasma parameters: these scalings come out in agreement with the established semiempirical scalings. The theory predictions are also compared with limited published H-mode data and the agreement is found to be very encouraging. |
| doi_str_mv | 10.1063/1.1852468 |
| format | Article |
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7, 635 (2000)] are invoked and extended to derive scalings for the edge pedestal width and height with plasma parameters: these scalings come out in agreement with the established semiempirical scalings. The theory predictions are also compared with limited published H-mode data and the agreement is found to be very encouraging.</description><identifier>ISSN: 1070-664X</identifier><identifier>EISSN: 1089-7674</identifier><identifier>DOI: 10.1063/1.1852468</identifier><identifier>CODEN: PHPAEN</identifier><language>eng</language><publisher>United States: American Institute of Physics</publisher><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY ; BOUNDARY LAYERS ; ELECTRIC DISCHARGES ; H-MODE PLASMA CONFINEMENT ; PLASMA ; PLASMA DENSITY ; PLASMA PRESSURE ; TOKAMAK DEVICES</subject><ispartof>Physics of plasmas, 2005-03, Vol.12 (3), p.032502-032502-6</ispartof><rights>American Institute of Physics</rights><rights>2005 American Institute of Physics</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c382t-5be0b5474a31e4d486baa5d30dae69f5e53eb9719b612f9e171b043fa229408d3</citedby><cites>FETCH-LOGICAL-c382t-5be0b5474a31e4d486baa5d30dae69f5e53eb9719b612f9e171b043fa229408d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/pop/article-lookup/doi/10.1063/1.1852468$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>230,314,780,784,794,885,1559,4512,27924,27925,76384,76390</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/20698375$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Guzdar, P. N.</creatorcontrib><creatorcontrib>Mahajan, S. M.</creatorcontrib><creatorcontrib>Yoshida, Z.</creatorcontrib><title>A theory for the pressure pedestal in high (H) mode tokamak discharges</title><title>Physics of plasmas</title><description>When a tokamak plasma makes a transition into the good or the high confinement H mode, the edge density and pressure steepen and develop a very sharp pressure pedestal. Prediction of the height and width of this pressure profile has been actively pursued so as to provide a reliable extrapolation to future burning plasma devices. The double-Beltrami two-fluid equilibria of Mahajan and Yoshida [Phys. Plasmas
7, 635 (2000)] are invoked and extended to derive scalings for the edge pedestal width and height with plasma parameters: these scalings come out in agreement with the established semiempirical scalings. The theory predictions are also compared with limited published H-mode data and the agreement is found to be very encouraging.</description><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</subject><subject>BOUNDARY LAYERS</subject><subject>ELECTRIC DISCHARGES</subject><subject>H-MODE PLASMA CONFINEMENT</subject><subject>PLASMA</subject><subject>PLASMA DENSITY</subject><subject>PLASMA PRESSURE</subject><subject>TOKAMAK DEVICES</subject><issn>1070-664X</issn><issn>1089-7674</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNp9kE9LwzAYh4MoOKcHv0HAixM6k-ZP04swhnPCwIuCt5A2b9e6rRlJFPbtbenwInrKc3jeh_BD6JqSKSWS3dMpVSLlUp2gESUqTzKZ8dOeM5JIyd_P0UUIH4QQLoUaocUMxxqcP-DK-R7x3kMIn74DsBCi2eKmxXWzrvHtcoJ3zgKObmN2ZoNtE8ra-DWES3RWmW2Aq-M7Rm-Lx9f5Mlm9PD3PZ6ukZCqNiSiAFIJn3DAK3HIlC2OEZcQakHklQDAo8ozmhaRplQPNaEE4q0ya5pwoy8boZui6EBsdyiZCWZeubaGMOiUyVywTnTUZrNK7EDxUeu-bnfEHTYnuZ9JUH2fq3IfB7WMmNq79W57pYSvdbdVjZ0IXuPsr8NVpP8d6b6v_5N9f-wb2gYpc</recordid><startdate>20050301</startdate><enddate>20050301</enddate><creator>Guzdar, P. N.</creator><creator>Mahajan, S. M.</creator><creator>Yoshida, Z.</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>20050301</creationdate><title>A theory for the pressure pedestal in high (H) mode tokamak discharges</title><author>Guzdar, P. N. ; Mahajan, S. M. ; Yoshida, Z.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c382t-5be0b5474a31e4d486baa5d30dae69f5e53eb9719b612f9e171b043fa229408d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</topic><topic>BOUNDARY LAYERS</topic><topic>ELECTRIC DISCHARGES</topic><topic>H-MODE PLASMA CONFINEMENT</topic><topic>PLASMA</topic><topic>PLASMA DENSITY</topic><topic>PLASMA PRESSURE</topic><topic>TOKAMAK DEVICES</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Guzdar, P. N.</creatorcontrib><creatorcontrib>Mahajan, S. M.</creatorcontrib><creatorcontrib>Yoshida, Z.</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Physics of plasmas</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Guzdar, P. N.</au><au>Mahajan, S. M.</au><au>Yoshida, Z.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A theory for the pressure pedestal in high (H) mode tokamak discharges</atitle><jtitle>Physics of plasmas</jtitle><date>2005-03-01</date><risdate>2005</risdate><volume>12</volume><issue>3</issue><spage>032502</spage><epage>032502-6</epage><pages>032502-032502-6</pages><issn>1070-664X</issn><eissn>1089-7674</eissn><coden>PHPAEN</coden><abstract>When a tokamak plasma makes a transition into the good or the high confinement H mode, the edge density and pressure steepen and develop a very sharp pressure pedestal. Prediction of the height and width of this pressure profile has been actively pursued so as to provide a reliable extrapolation to future burning plasma devices. The double-Beltrami two-fluid equilibria of Mahajan and Yoshida [Phys. Plasmas
7, 635 (2000)] are invoked and extended to derive scalings for the edge pedestal width and height with plasma parameters: these scalings come out in agreement with the established semiempirical scalings. The theory predictions are also compared with limited published H-mode data and the agreement is found to be very encouraging.</abstract><cop>United States</cop><pub>American Institute of Physics</pub><doi>10.1063/1.1852468</doi><tpages>6</tpages></addata></record> |
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| identifier | ISSN: 1070-664X |
| ispartof | Physics of plasmas, 2005-03, Vol.12 (3), p.032502-032502-6 |
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| language | eng |
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| source | American Institute of Physics (AIP) Journals; AIP Digital Archive |
| subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY BOUNDARY LAYERS ELECTRIC DISCHARGES H-MODE PLASMA CONFINEMENT PLASMA PLASMA DENSITY PLASMA PRESSURE TOKAMAK DEVICES |
| title | A theory for the pressure pedestal in high (H) mode tokamak discharges |
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