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论文类型：期刊论文
发表时间：2013-05-01
发表刊物：PLASMA PHYSICS AND CONTROLLED FUSION
收录刊物：SCIE、EI、Scopus
卷号：55
期号：5
ISSN号：0741-3335
摘要：A Monte-Carlo code called SURO was developed to study the influence of surface roughness on the impurity deposition characteristics in fusion experiments. SURO uses the test particle approach to describe the impact of background plasma and the deposition of impurity particles on a sinusoidal surface. The local impact angle and dynamic change of surface roughness as well as surface concentrations of different species due to erosion and deposition are taken into account. Coupled with the three-dimensional Monte-Carlo code ERO, SURO was used to study the impact of surface roughness on C-13 deposition in (CH4)-C-13 injection experiments in TEXTOR. The simulations showed that the amount of net deposited C-13 species increased with surface roughness. Parameter studies with varying C-12 and C-13 fluxes were performed to gain insights into impurity deposition characteristics on the rough surface. Calculations of the exposure time needed for surface smoothing for TEXTOR and ITER were also carried out for different scenarios.