Physics and performance of the I-mode regime over an expanded operating space on Alcator C-Mod | |
Hubbard, A. E.1; Baek, S. -G.1; Brunner, D.1; Creely, A. J.1; Cziegler, I.2; Edlund, E.1; Hughes, J. W.1; LaBombard, B.1; Lin, Y.1; Liu, Z.3,4 | |
刊名 | NUCLEAR FUSION |
2017-12-01 | |
卷号 | 57期号:12 |
关键词 | Fec 2016 Tokamak I-mode Pedestal Transport |
DOI | 10.1088/1741-4326/aa8570 |
文献子类 | Article |
英文摘要 | New results on the I-mode regime of operation on the Alcator C-Mod tokamak are reported. This ELM-free regime features high energy confinement and a steep temperature pedestal, while particle confinement remains at L-mode levels, giving stationary density and avoiding impurity accumulation. I-mode has now been obtained over nearly all of the magnetic fields and currents possible in this high field tokamak (I-p 0.55-1.7 MA, B-T 2.8-8 T) using a configuration with B x del B drift away from the X-point. Results at 8 T confirm that the L-I power threshold varies only weakly with B-T, and that the power range for I-mode increases with B-T; no 8 T discharges transitioned to H-mode. Parameter dependences of energy confinement are investigated. Core transport simulations are giving insight into the observed turbulence reduction, profile stiffness and confinement improvement. Pedestal models explain the observed stability to ELMs, and can simulate the observed weakly coherent mode. Conditions for I-H transitions have complex dependences on density as well as power. I-modes have now been maintained in near-DN configurations, leading to improved divertor power flux sharing. Prospects for I-mode on future fusion devices such as ITER and ARC are encouraging. Further experiments on other tokamaks are needed to improve confidence in extrapolation. |
WOS研究方向 | Physics |
语种 | 英语 |
WOS记录号 | WOS:000412386300001 |
资助机构 | U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facility Alcator C-Mod(DE-FC02-99ER54512-CMOD) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) ; National Natural Science Foundation of China(11405217) |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/33717] |
专题 | 合肥物质科学研究院_中科院等离子体物理研究所 |
作者单位 | 1.MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA 2.Univ York, Dept Phys, York Plasma Inst, York, N Yorkshire, England 3.Chinese Acad Sci, Inst Plasma Phys, Hefei, Anhui, Peoples R China 4.Lawrence Livermore Natl Lab, Livermore, CA USA 5.Oak Ridge Natl Lab, Oak Ridge, TN USA 6.Univ Calif Los Angeles, Los Angeles, CA USA 7.Ecole Polytech Fed Lausanne, SPC, CH-1015 Lausanne, Switzerland |
推荐引用方式 GB/T 7714 | Hubbard, A. E.,Baek, S. -G.,Brunner, D.,et al. Physics and performance of the I-mode regime over an expanded operating space on Alcator C-Mod[J]. NUCLEAR FUSION,2017,57(12). |
APA | Hubbard, A. E..,Baek, S. -G..,Brunner, D..,Creely, A. J..,Cziegler, I..,...&Alcator C-Mod team.(2017).Physics and performance of the I-mode regime over an expanded operating space on Alcator C-Mod.NUCLEAR FUSION,57(12). |
MLA | Hubbard, A. E.,et al."Physics and performance of the I-mode regime over an expanded operating space on Alcator C-Mod".NUCLEAR FUSION 57.12(2017). |
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