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Accumulation of beryllium dust in ITER diagnostic ports after off-normal events
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Space and Plasma Physics.ORCID iD: 0000-0001-7796-1887
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Space and Plasma Physics.ORCID iD: 0000-0002-6712-3625
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Space and Plasma Physics.ORCID iD: 0000-0001-9632-8104
ITER Org, Route Vinon Sur Verdon,CS 90 046, F-13067 St Paul Les Durance, France..
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2019 (English)In: Nuclear Materials and Energy, E-ISSN 2352-1791, Vol. 20, article id UNSP 100684Article in journal (Refereed) Published
Abstract [en]

Dust transport simulations are used to predict the effect of diagnostic ports on the in-vessel inventory of solid beryllium particles produced during mitigated disruptions in ITER. Beryllium dust is assumed to originate from the re-solidification of liquid droplets, which are initially ejected during transient first-wall melting events and subsequently interact with the disrupting plasma. The trajectories of droplets launched with various initial conditions, as well as the time evolution of their temperature and mass, are simulated until either complete vaporization or immobilization upon undergoing a sticking or splashing impact with the wall is realized. The results indicate that approximately 10% of the dust mass in the vessel can be expected to reside inside ports, in particular those located in the equatorial plane or in the lower outboard first wall.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 20, article id UNSP 100684
Keywords [en]
Beryllium, Dust, Droplets, Disruptions
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-266196DOI: 10.1016/j.nme.2019.100684ISI: 000500930800002Scopus ID: 2-s2.0-85065446827OAI: oai:DiVA.org:kth-266196DiVA, id: diva2:1384613
Conference
23rd International Conference on Plasma-Surface Interactions in Controlled Fusion Devices (PSI), JUN 18-22, 2018, Princeton Univ, Princeton, NJ
Note

QC 20200110

Available from: 2020-01-10 Created: 2020-01-10 Last updated: 2020-01-10Bibliographically approved

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Vignitchouk, LadislasRatynskaia, Svetlana V.Tolias, Panagiotis

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