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Title CONTROL OF MHD STABILITY IN DIII-D ADVANCED TOKAMAK DISCHARGES
Creator/Author STRAIT,EJ ; BIALEK,J ; CHANCE,MS ; CHU,MS ; EDGELL,DH ; FERRON,JR ; GREENFIELD,CM ; GAROFALO,AM ; HUMPHREYS,DA ; JACKSON,GL ; JAYAKUMAR,RJ ; JERNIGAN,TC ; KIM,JS ; LA HAYE,RJ ; LAO,LL ; LUCE,TC ; MAKOWSKI,MA ; MURAKAMI,M ; NAVRATIL,GA ; OKABAYASHI,M ; PETTY,CC ; REIMERDES,H ; SCOVILLE,JT ; TURNBULL,AD ; WADE,MR ; WALKER,ML ; WHYTE,DG ; DIII-D TEAM
Publication Date2003 Jun 01
OSTI IdentifierOSTI ID: 821565
DOE Contract NumberAC03-99ER54463
Other Number(s)TRN: US200411%%223
Resource TypeConference
Resource RelationConference: 30TH EUROPEAN PHYSICAL SOCIETY CONFERENCE ON CONTROLLED FUSION AND PLASMA PHYSICS, St.PETERSBURG (RU), 07/07/2003--07/11/2003; Other Information: PBD: 1 Jun 2003
Research OrgGENERAL ATOMICS (US)
Sponsoring Org(US)
Subject70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BOOTSTRAP CURRENT; DOUBLET-3 DEVICE; PHYSICS; PLASMA; PLASMA PRESSURE; POWER DENSITY; PRODUCTION; STABILITY; THERMONUCLEAR REACTORS
Description/AbstractOAK-B135 Advanced tokamak research in DIII-D seeks to optimize the tokamak approach for fusion energy production, leading to a compact, steady state power source. High power density implies operation at high toroidal beta, {beta}{sub T}=<p>2{micro}{sub 0}/B{sub T}{sup 2}, since fusion power density increases roughly as the square of the plasma pressure. Steady-state operation with low recirculating power for current drive implies operation at high poloidal beta, {beta}{sub P} = <p>2{micro}{sub 0}/<B{sub P}>{sup 2}, in order to maximize the fraction of self-generated bootstrap current. Together, these lead to a requirement of operation at high normalized beta, {beta}{sub N} = {beta}{sub T}(aB/I), since {beta}{sub P}{beta}{sub T} {approx} 25[(1+{kappa}{sup 2})/2] ({beta}{sub N}/100){sup 2}. Plasmas with high normalized beta are likely to operate near one or more stability limits, so control of MHD stability in such plasmas is crucial.
Country of PublicationUnited States
LanguageEnglish
FormatMedium: ED; Size: vp.
Availability INIS; OSTI as DE00821565
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System Entry Date2008 Feb 05
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