Bulletin of the American Physical Society
60th Annual Meeting of the APS Division of Plasma Physics
Volume 63, Number 11
Monday–Friday, November 5–9, 2018; Portland, Oregon
Session CP11: Poster Session II: Basic Plasma Physics; Boundary, PMI, Proto-MPEX; International Tokamaks; Turbulence and Transport; Other Configurations; Z-pinch, Dense Plasma Focus and MagLIF (2:00pm-5:00pm)
Monday, November 5, 2018
OCC
Room: Exhibit Hall A1&A
Abstract ID: BAPS.2018.DPP.CP11.119
Abstract: CP11.00119 : Key effects on the core confinement improvement of AUG hybrid scenario
Presenter:
Xiang Jian
(State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, W)
Authors:
Xiang Jian
(State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, W)
Vincent Chan
(School of Nuclear Science and Technology, University of Science and Technology of China, 230026, Hefei, People’s Republic of China, General Atomics, PO Box 85608, San Diego, )
Jiale Chen
(Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China)
Alexander Bock
(Max-Planck-Institut für Plasmaphysik, Boltzmannstr. 2, 85748 Garching, Germany)
Hartmut Zohm
(Max-Planck-Institut für Plasmaphysik, Boltzmannstr. 2, 85748 Garching, Germany)
Ge Zhuang
(School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China)
Hybrid mode is a prime candidate for long-pulse/steady-state operation in future fusion reactors. Transport analysis of a fully non-inductive high performance ASDEX Upgrade(AUG) hybrid shot(A.Bock, Nuclear Fusion, 2017) is performed. It is shown that the confluence of several mechanisms is essential for the improvement in core confinement. In addition to the rotation shear, low magnetic shear, which is a common characteristic near the magnetic axis of hybrid scenario, is found to be favorable for both electromagnetic and alpha stabilization. Together they prepare the stage such that the presence of fast ions facilitates the transition to a strong local ITB due to additional dilution effect and enhancement of alpha stabilization. This study presents for the first time that a quasilinear turbulent model is capable of quantitatively matching the experiment temperature profile across the entire core. Such a model can thus be used with confidence to design hybrid operating scenarios for ITER and CFETR.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DPP.CP11.119
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