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Equilibrium reconstruction at JET using Stokes model for polarimetry
Univ Cote dAzur, CNRS, INRIA, Lab JA Dieudonne, Parc Valrose, F-06108 Nice 2, France..
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: 12242018 (engelsk)Inngår i: Nuclear Fusion, ISSN 0029-5515, E-ISSN 1741-4326, Vol. 58, nr 10, artikkel-id 106032Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This paper presents the first application to real JET data of the new equilibrium code NICE which enables the consistent resolution of the inverse equilibrium reconstruction problem in the framework of non-linear free-boundary equilibrium coupled to the Stokes model equation for polarimetry. The conducted numerical experiments enable first of all to validate NICE by comparing it to the well-established EFIT code on 4 selected high performance shots. Secondly the results indicate that the fit to polarimetry measurements clearly benefits from the use of Stokes vector measurements compared to the classical case of Faraday measurements, and that the reconstructed p' and ff' profiles are better constrained with smaller error bars and are closer to the profiles reconstructed by EFTM, the EFIT JET code using internal MSE constraints.

sted, utgiver, år, opplag, sider
IOP PUBLISHING LTD , 2018. Vol. 58, nr 10, artikkel-id 106032
Emneord [en]
equilibrium reconstruction, JET, polarimetry, Stokes model
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-270554DOI: 10.1088/1741-4326/aad751ISI: 000443247800001Scopus ID: 2-s2.0-85053426621OAI: oai:DiVA.org:kth-270554DiVA, id: diva2:1414445
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QC 20200313

Tilgjengelig fra: 2020-03-13 Laget: 2020-03-13 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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