TY - JOUR
T1 - The influence of the radial particle transport on the divertor plasma detachment
AU - Hoshino, K.
AU - Shimizu, K.
AU - Takizuka, T.
AU - Asakura, N.
AU - Nakano, T.
N1 - Funding Information:
SONIC simulations were carried out using the HELIOS super-computer system at International Fusion Energy Research Centre, Aomori, Japan, under the Broader Approach collaboration between Euratom and Japan, implemented by Fusion for Energy and Japan Atomic Energy Agency. This work is partially supported by Grant-in-Aid for Young Scientists (B) and Grants-in-Aid for Scientific Research of Japan Society for the Promotion of Science (B).
Publisher Copyright:
© 2014 Elsevier B.V.
Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2015/7/22
Y1 - 2015/7/22
N2 - Abstract Divertor plasma detachment is the most promising candidate to reduce the divertor heat load in fusion reactors. Present understanding of detachment physics is not sufficient to adequately reproduce experimental observations. Understanding and control of detachment physics is indispensable to design the divertor in future machines. To improve the quality of divertor modeling and reveal limitations of the detachment physics built into state-of-the-art codes, an integrated divertor code SONIC has been applied to modeling of the JT-60U detached divertor plasma. In this study, the radial diffusion coefficient in the private region or the far SOL region is increased to investigate the influence of radial plasma transport on detachment characteristics. Saturation of the reduction in ion flux after roll-over is improved by the radial transport enhancement, while the radial profile at the mid-plane agreed with the experimental data.
AB - Abstract Divertor plasma detachment is the most promising candidate to reduce the divertor heat load in fusion reactors. Present understanding of detachment physics is not sufficient to adequately reproduce experimental observations. Understanding and control of detachment physics is indispensable to design the divertor in future machines. To improve the quality of divertor modeling and reveal limitations of the detachment physics built into state-of-the-art codes, an integrated divertor code SONIC has been applied to modeling of the JT-60U detached divertor plasma. In this study, the radial diffusion coefficient in the private region or the far SOL region is increased to investigate the influence of radial plasma transport on detachment characteristics. Saturation of the reduction in ion flux after roll-over is improved by the radial transport enhancement, while the radial profile at the mid-plane agreed with the experimental data.
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U2 - 10.1016/j.jnucmat.2014.11.133
DO - 10.1016/j.jnucmat.2014.11.133
M3 - Article
AN - SCOPUS:84937729856
SN - 0022-3115
VL - 463
SP - 573
EP - 576
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
M1 - 48729
ER -