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Preliminary Monte Carlo simulation of beryllium migration during JET ITER-like wall divertor operation
Vise andre og tillknytning
2015 (engelsk)Inngår i: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 463, s. 800-804Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Migration of beryllium into the divertor and deposition on tungsten in the final phase of the first ITER-like-wall campaign of JET are modelled with the 3D Monte Carlo impurity transport code ERO. The simulation covers the inner wall and the inner divertor. To generate the plasma background for Monte Carlo tracing of impurity particles, we use the EDGE2D/EIRENE code set. At the relevant regions of the wall, the estimated plasma conditions vary around T-e approximate to 5eV and n(e) 2 x 10(17) m(-3) (far-scrape-off layer; more than 10 cm away from the LCFS). We calculate impurity distributions in the plasma using the main chamber source as a free parameter in modelling and attempt to reproduce inter-ELM spectroscopic BeII line (527 nm) profiles at the divertor. The present model reproduces the level of emission close to the inner wall, but further work is needed to match also the measured emission peak values and ultimately link the modelled poloidal net deposition profiles of beryllium to post mortem data.

sted, utgiver, år, opplag, sider
2015. Vol. 463, s. 800-804
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Identifikatorer
URN: urn:nbn:se:kth:diva-172696DOI: 10.1016/j.jnucmat.2014.09.010ISI: 000358467200170Scopus ID: 2-s2.0-84937677678OAI: oai:DiVA.org:kth-172696DiVA, id: diva2:850147
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QC 20150901

Tilgjengelig fra: 2015-09-01 Laget: 2015-08-27 Sist oppdatert: 2017-12-04bibliografisk kontrollert

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