SOLPS-ITER modeling of CFETR advanced divertor with Ar and Ne seeding
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Le résumé fourni par la source
Abstract The Chinese Fusion Engineering Testing Reactor (CFETR) is a project proposed by the Chinese fusion community to bridge the gap between ITER and a commercial fusion power plant with fusion power up to 1 GW. The mitigation of divertor target heat fluxes for such a powerful machine is a challenging problem, which might appear to be more severe than in ITER. In the present paper, the results of the CFETR advanced divertor optimization by SOLPS-ITER modeling with full drifts and currents activated are presented. Three divertor geometries, which differ by the distance from the X -point to the strike point on the outer target, are considered. Argon (Ar) and neon (Ne) are compared as seeded impurities. It is demonstrated that for all three geometries and for both radiators it is possible to achieve acceptable divertor heat loads (below 5 MW m −2 ) without notable fuel dilution ( Z eff < 2.5). Impurity compression in divertors and pedestal radiation are compared for two gases. Similar core plasma and divertor conditions, as well as radiated power fraction, may be achieved with 2–3 times less Ar seeding rate than the Ne one. Estimated radiation from the confined region appears to be small compared to the exhaust power. However, in all modeling cases the T e at the far scrape-off layer part of both targets remains significantly above 5 eV, which might cause tungsten (W) sputtering. Further optimization of target shape will be performed to reduce the electron and ion temperature.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- SOLPS-ITER modeling of CFETR advanced divertor with Ar and Ne seeding
- Date Crossref
- 18/07/2022
- Éditeur
- IOP Publishing
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Peter the Great St. Petersburg Polytechnic University pays non établi dans la noticeUniversité ou école supérieure
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Chinese Academy of Sciences pays non établi dans la noticeOrganisme public
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Institute of Plasma Physics pays non établi dans la noticeStructure de recherche
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Dalian University of Technology pays non établi dans la noticeUniversité ou école supérieure
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Key Laboratory of Materials Modification by Laser pays non établi dans la noticeStructure de recherche
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University of Science and Technology of China pays non établi dans la noticeUniversité ou école supérieure
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Peter the Great Saint Petersburg Polytechnic University pays non établi dans la noticeUniversité ou école supérieure
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School of Physics Key Laboratory of Materials Modification by Laser pays non établi dans la noticeUniversité ou école supérieure
Peter the Great St. Petersburg Polytechnic University, Chinese Academy of Sciences et Institute of Plasma Physics, avec 5 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.