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An Analytical Expression for the Electric Field and Particle Tracing in Modelling of Be Erosion Experiments at the JET ITER-like Wall
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.ORCID iD: 0000-0001-7741-3370
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.
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Number of Authors: 11122016 (English)In: Contributions to Plasma Physics, ISSN 0863-1042, E-ISSN 1521-3986, Vol. 56, no 6-8, p. 640-645Article in journal (Refereed) Published
Abstract [en]

A new analytical approximation for the electric potential profile in the presence of an oblique magnetic field and the analytical solution for the particle motion just before the impact with a plasma-facing surface are presented. These approximations are in good agreement with fluid solutions and the corresponding PIC simulations. These expressions were applied to provide effective physical erosion yields for Be, which have in a second step been used in ERO code simulations of spectroscopy at Be limiters of the JET ITER-like wall. These new analytical expressions lead to an increase of the effective physical sputtering yields of Be by deuteron impact up to 30% in comparison with earlier pure numerical simulations. (

Place, publisher, year, edition, pages
WILEY-V C H VERLAG GMBH , 2016. Vol. 56, no 6-8, p. 640-645
Keywords [en]
Plasma-surface interaction, JET, ITER-like wall, beryllium, erosion, ERO code, magnetic pre-sheath, the Debye sheath, oblique magnetic field, electric field, sputtering
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-272163DOI: 10.1002/ctpp.201610032ISI: 000383363900025Scopus ID: 2-s2.0-84983527149OAI: oai:DiVA.org:kth-272163DiVA, id: diva2:1424767
Conference
15th International Workshop on Plasma Edge Theory in Fusion Devices (PET), SEP 09-11, 2015, Nara Kasugano Int Forum IRAKA, Nara, JAPAN
Note

QC 20200420

Available from: 2020-04-20 Created: 2020-04-20 Last updated: 2020-04-20Bibliographically approved

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Bergsåker, HenricBykov, IgorElevant, ThomasFrassinetti, LorenzoGarcia Carrasco, AlvaroHellsten, TorbjörnIvanova, DaryaJonsson, ThomasMenmuir, SheenaPetersson, PerRachlew, ElisabethRubel, MarekStröm, PetterTholerus, SimonWeckmann, Armin
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