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EDGE2D-EIRENE simulations of the impact of poloidal flux expansion on the radiative divertor performance in JET
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
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Number of Authors: 12292017 (English)In: Nuclear Materials and Energy, E-ISSN 2352-1791, Vol. 12, p. 786-790Article in journal (Refereed) Published
Abstract [en]

In the past at JET, with the MkI divertor, a systematic study of the influence of X-point height and poloidal flux expansion has been conducted [1,2] showing minor differences in the radiation distribution, whereas in [3] experiment and simulations have shown enhancement of detachment as the flux expansion was increased. More recently at JET, equipped with the ITER-like wall (ILW), radiative seeded scenarios have been studied and a maximum radiation fraction 75% has been achieved. EDGE2D-EIRENE [4-6] simulations [7,8] have already shown that the divertor heat fluxes can be reduced with N2 injection, qualitatively consistent with experimental observations [9], by adjusting the impurity injection rate to reproduce the measured divertor radiation. In this paper we will present edge predictive simulations on the assessment of effects of poloidal flux expansion and recycling on radiation distribution and X-point peaking on JET-ILW nitrogen seeded plasmas. (C) 2017 The Authors. Published by Elsevier Ltd.

Place, publisher, year, edition, pages
ELSEVIER , 2017. Vol. 12, p. 786-790
Keywords [en]
Power exhaust, Radiation, EDGE2D, EIRENE, JET, Nitrogen, Impurity seeding
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:uu:diva-398918DOI: 10.1016/j.nme.2017.07.004ISI: 000417293300128OAI: oai:DiVA.org:uu-398918DiVA, id: diva2:1379630
Note

For complete list of authors see http://dx.doi.org/10.1016/j.nme.2017.07.004

Available from: 2019-12-17 Created: 2019-12-17 Last updated: 2019-12-17Bibliographically approved

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