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Dynamics and stability of divertor detachment in H-mode plasmas on JET
KTH, Skolan för elektroteknik och datavetenskap (EECS), Elektroteknik, Fusionsplasmafysik.
KTH, Skolan för elektroteknik och datavetenskap (EECS), Elektroteknik, Fusionsplasmafysik.
KTH, Skolan för elektroteknik och datavetenskap (EECS), Elektroteknik, Fusionsplasmafysik.ORCID-id: 0000-0002-9546-4494
Vise andre og tillknytning
Rekke forfattare: 12362017 (engelsk)Inngår i: Plasma Physics and Controlled Fusion, ISSN 0741-3335, E-ISSN 1361-6587, Vol. 59, nr 9, artikkel-id 095003Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The dynamics and stability of divertor detachment in N-2 seeded, type-I, ELMy H-mode plasmas with dominant NBI heating in the JET ITER-like wall device is studied by means of an integrated analysis of diagnostic data from several systems, classifying data relative to the ELM times. It is thereby possible to study the response of the detachment evolution to the control parameters (SOL input power, upstream density and impurity fraction) prevailing during the inter-ELM periods and the effect of ELMs on the detached divertor. A relatively comprehensive overview is achieved, including the interaction with the targets at various stages of the ELM cycle, the role of ELMs in affecting the detachment process and the overall performance of the scenario. The results are consistent with previous studies in devices with an ITER-like, metal wall, with the important advance of distinguishing data from intra-and inter-ELM periods. Operation without significant degradation of the core confinement can be sustained in the presence of strong radiation from the x-point region (MARFE).

sted, utgiver, år, opplag, sider
IOP PUBLISHING LTD , 2017. Vol. 59, nr 9, artikkel-id 095003
Emneord [en]
divertor, H-mode, detachment, JET-ILW, stability, evolution, ELM
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-270578DOI: 10.1088/1361-6587/aa764cISI: 000405081700002Scopus ID: 2-s2.0-85026775380OAI: oai:DiVA.org:kth-270578DiVA, id: diva2:1413824
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20200311

Tilgjengelig fra: 2020-03-11 Laget: 2020-03-11 Sist oppdatert: 2020-05-11bibliografisk kontrollert

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Bergsåker, HenricBykov, IgorFrassinetti, LorenzoGarcia-Carrasco, AlvaroHellsten, TorbjörnJohnson, ThomasMenmuir, SheenaPetersson, PerRachlew, ElisabethRatynskaia, SvetlanaRubel, MarekStefanikova, EsteraStröm, PetterTholerus, EmmiTolias, PanagiotisOlivares, Pablo VallejosWeckmann, ArminZhou, Yushun
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