SOLPS-ITER modeling of beryllium trace impurity in ITER

Beryllium transport modeling was carried out in the trace impurity regime by SOLPS-ITER code for tokamak ITER. It is valuable for developing of diagnostics protection from beryllium deposition. TRIM reflection model and Bogdanskii formula sputtering model were applied. The idea is to show possibilit...

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Bibliographic Details
Published in:MATEC web of conferences 2018-01, Vol.245, p.13002
Main Authors: Makarov, Sergei, Kaveeva, Elizaveta
Format: Article
Language:English
Subjects:
Beryllium
Density distribution
Fluxes
Modelling
Sputtering
Tokamak devices
Trace impurities
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Summary:Beryllium transport modeling was carried out in the trace impurity regime by SOLPS-ITER code for tokamak ITER. It is valuable for developing of diagnostics protection from beryllium deposition. TRIM reflection model and Bogdanskii formula sputtering model were applied. The idea is to show possibility of using this code for beryllium transport. This code has key advantage comparing to other codes, which study beryllium transport, because in it the main plasma and impurities are described self-consistently. Therefore, if beryllium affect the background plasma, only this code can take this effect into account. Test calculations were performed with suppressed sputtering yield by 10 times, to reach trace impurity regime. Main features of behavior of beryllium in the tokamak were studied, however under restriction of static wall conditions. Sources, sinks, fluxes and density distribution were determined. In this test calculation plasma state kept unchanged as expected. Distribution of impinging and absorbed fluxes on the outer divertor plate were established in the position of divertor diagnostics. Main ways for the further improvement are suggested.
ISSN:2261-236X
2274-7214
2261-236X
DOI:10.1051/matecconf/201824513002