| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
Prev
Next
|
|
|
Effect of edge transport barrier on required toroidal field for ignition of elongated tokamak |
| Cui-Kun Yang(杨翠坤)1,2, Ming-Sheng Chu(朱名盛)1, Wen-Feng Guo(郭文峰)1 |
1 Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China;
2 University of Science and Technology of China, Hefei 230031, China |
|
|
|
|
Abstract The effect of an edge transport barrier on the toroidal field required for the ignition of an elongated tokamak is studied by modifying an analytic model which was calibrated against a transport code. It is found that the presence of the edge transport barrier will lead to a higher marginal toroidal field needed for ignition. This seemingly counter intuitive result is explained as being due to the equivalent effect of profile broadening by the edge transport barrier. This effect is further traced to its physical origin:in the case close to ignition, the fusion power input is predominantly concentrated in the center of plasma. It is demonstrated that if the fusion power input could be shifted from the center to the edge by a sufficient amount, then the presence of an edge transport barrier would lead to a reduction of the required toroidal field for ignition.
|
Received: 16 December 2018
Revised: 18 February 2019
Accepted manuscript online:
|
|
PACS:
|
52.50.Nr
|
(Plasma heating by DC fields; ohmic heating, arcs)
|
| |
52.55.Fa
|
(Tokamaks, spherical tokamaks)
|
| |
52.55.Dy
|
(General theory and basic studies of plasma lifetime, particle and heat loss, energy balance, field structure, etc.)
|
|
| Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2017YFE0300402), the National Natural Science Foundation of China (Grant Nos. 11475219 and 11775268), and the Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology, China (Grant No. 2018CXFX009). |
Corresponding Authors:
Cui-Kun Yang
E-mail: ckyang@ipp.ac.cn
|
Cite this article:
Cui-Kun Yang(杨翠坤), Ming-Sheng Chu(朱名盛), Wen-Feng Guo(郭文峰) Effect of edge transport barrier on required toroidal field for ignition of elongated tokamak 2019 Chin. Phys. B 28 045202
|
| [1] |
Li J G 2016 Physics 45 88 (in Chinese)
|
| [2] |
Coppi B 1977 Comments Plasma Phys. Control. Fusion 3 47
|
| [3] |
Wagner C E 1981 Phys. Rev. Lett. 46 654
|
| [4] |
Chu M S, Harvey R W, Politzer P A and Yamagishi T 1985 Nucl. Fusion 25 835
|
| [5] |
Cohn D R and Bromberg L 1986 J. Fusion Energy 5 161
|
| [6] |
https://wikivisually.com/wiki/Ignitor
|
| [7] |
Wagner F, Fussmann G, Grave T, et al., 1984 Phys. Rev. Lett. 53 1453
|
| [8] |
Behn R, Alfier A, Yu S, Zhuang G, Pasqualotto R, Nielsen P, Martin Y and team T C V 2007 Plasma Phys. Control. Fusion 49 1289
|
| [9] |
Troyon F, Gruber T, Saurenmann H, Semenzato S and Succi S 1984 Plasma Phys. Control. Fusion 26 1A 209
|
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|
