What question did this study set out to answer?

Explore the influence of drift effects on plasma behavior in ITER scenarios.

April 5, 2026

First Results of SOLPS ‐ ITER Wide Grid ITER Modeling With Drifts

NSNikita ShtyrkhunovPeter the Great St. Petersburg Polytechnic University EKE. KaveevaPeter the Great St. Petersburg Polytechnic University VRV. RozhanskyPeter the Great St. Petersburg Polytechnic University

Key Points

Explore the influence of drift effects on plasma behavior in ITER scenarios.
Utilized SOLPS-ITER wide grid version 3.2.0 for modeling.
Analyzed two scenarios: start of research operation (SRO) and full burning plasma (FBP).
Examined drift impacts on particle flux and divertor asymmetry.
Drifts significantly influenced attached regimes in SRO but decreased in detachment.
Found high drift-driven fluxes causing increased divertor asymmetry.
Drifts affected the stagnation point of particle flux in near SOL, but not in far SOL.
Plasma parameters at the main chamber wall remained largely unchanged.

Abstract

ABSTRACT First modeling results by SOLPS‐ITER wide grid (3.2.0) version with inclusion of drift effects for ITER are obtained. Modeling was made up to the main chamber wall for two different scenarios: start of research operation (SRO) , , , and full burning plasma (FBP) , , . The impact of drifts was investigated. For the SRO cases, the strongest influence of drifts was observed in the attached regime, with their contribution decreasing during the transition to pronounced detachment. High drift‐driven fluxes between the targets in the private flux region lead to increased divertor asymmetry. For the FBP case, the inclusion of drifts also enhances divertor asymmetry. Drifts alter the stagnation point of the particle flux in the near SOL but do not influence the far SOL. Furthermore, drifts do not significantly change the plasma parameters at the main chamber wall.

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