Transport modeling of the DIII-D high βp scenario and extrapolations to ITER steady-state operation

doi:10.1088/1741-4326/aa79ca

	Transport modeling of the DIII-D high βp scenario and extrapolations to ITER steady-state operation
	McClenaghan,J.4; Garofalo,A.M.1; Meneghini,O.1; Smith,S.P.1; Leuer,J.A.1; Staebler,G.M.1; Lao,L.L.1; Park,J.M.3; Ding,S.Y.2; Gong,X.2
刊名	Nuclear Fusion
	2017-08-03
卷号	57
关键词	steady-state transport ITER DIII-D
ISSN号	0029-5515
DOI	10.1088/1741-4326/aa79ca
英文摘要	Abstract Transport modeling of a proposed ITER steady-state scenario based on DIII-D high poloidal-beta (βp) discharges finds that ITB formation can occur with either sufficient rotation or a negative central shear q-profile. The high βp scenario is characterized by a large bootstrap current fraction (80%) which reduces the demands on the external current drive, and a large radius internal transport barrier which is associated with excellent normalized confinement. Modeling predictions of the electron transport in the high βp scenario improve as q95 approaches levels similar to typical existing models of ITER steady-state and the ion transport is turbulence dominated. Typical temperature and density profiles from the non-inductive high βp scenario on DIII-D are scaled according to 0D modeling predictions of the requirements for achieving a Q=5 steady-state fusion gain in ITER with ‘day one’ heating and current drive capabilities. Then, TGLF turbulence modeling is carried out under systematic variations of the toroidal rotation and the core q-profile. A high bootstrap fraction, high βp scenario is found to be near an ITB formation threshold, and either strong negative central magnetic shear or rotation in a high bootstrap fraction are found to successfully provide the turbulence suppression required to achieve Q=5.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:0029-5515-57-11-AA79CA
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/43012]
专题	中国科学院合肥物质科学研究院
作者单位	1.General Atomics, PO Box 85608, San Diego, CA 92186–5608, United States of America 2.Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China 3.Oak Ridge National Laboratory, PO Box 2008, Oak Ridge, TN 37831, United States of America 4.Oak Ridge Associated Universities, Oak Ridge, TN 37831, United States of America
推荐引用方式 GB/T 7714	McClenaghan,J.,Garofalo,A.M.,Meneghini,O.,et al. Transport modeling of the DIII-D high βp scenario and extrapolations to ITER steady-state operation[J]. Nuclear Fusion,2017,57.
APA	McClenaghan,J..,Garofalo,A.M..,Meneghini,O..,Smith,S.P..,Leuer,J.A..,...&Qian,J..(2017).Transport modeling of the DIII-D high βp scenario and extrapolations to ITER steady-state operation.Nuclear Fusion,57.
MLA	McClenaghan,J.,et al."Transport modeling of the DIII-D high βp scenario and extrapolations to ITER steady-state operation".Nuclear Fusion 57(2017).