Small resonant magnetic perturbations result in three-dimensional material transport in the fusion plasma edge

Navarro, Marcos; Romazanov, Juri; Kirschner, Andreas; Van Blarcum, Jonathan; Hinson, Edward; Abrams, Tyler; Schmitz, Oliver

doi:10.1088/1741-4326/ad2b2d

Title: Small resonant magnetic perturbations result in three-dimensional material transport in the fusion plasma edge

Journal Article · 27 February 2024 · Nuclear Fusion

DOI: https://doi.org/10.1088/1741-4326/ad2b2d · OSTI ID:2315068

Navarro, Marcos;

;

; Van Blarcum, Jonathan; Hinson, Edward;

;

Abstract Erosion patterns in a 3D magnetic topology are significantly altered when compared to an axisymmetric scenario due to differences in the impurity transport in a plasma environment. When resonant magnetic perturbations are applied in L-Mode discharges, eroded impurities can buildup in regions where an axisymmetric plasma would otherwise lead to zones of net erosion across the full toroidal length of the divertor. The reduction on the local and integrated erosion observed across a parametric study of the anomalous diffusion and impurity content in a plasma, can lead to the extension of divertor lifetimes in low power scenarios when 3D fields are applied. By contrast, in axisymmetric scenarios, most of the carbon eroded from the divertor are carried away to the far scrape-off layer.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0020284

OSTI ID:: 2315068

Alternate ID(s):: OSTI ID: 2309823

Journal Information:: Nuclear Fusion, Journal Name: Nuclear Fusion Vol. 64 Journal Issue: 4; ISSN 0029-5515

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: IAEA

Language:: English

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