MAST-U has recently started operating with a Super-X divertor, designed to increase total flux expansion and neutral trapping, both predicted through simple analytic models and SOLPS calculations to reduce the plasma and impurity density detachment thresholds. In this study, utilising the SOLPS-ITER code, we are quantifying the possible gain allowed by the MAST-U Super-X and neutral baffling geometry, in terms of access to detachment. We show that a significant reduction of the upstream density detachment threshold (up to a factor 1.6) could be achieved in MAST-U, for the Super-X, as opposed to conventional divertor geometry, mainly through an increased total flux expansion, neutral trapping being found very similar between the different configurations. We also show that variations of the strike-point angle are complex to interpret in such a tightly baffled geometry, and that a case in which the target normal points more towards the separatrix does not necessarily imply a lower detachment threshold. As in previous calculations for TCV, we quantify the role of neutral effects through developing and applying a quantitative definition of neutral trapping.
A coherent structure transport model for scrape-off layer turbulence
Renewable and Sustainable Energy Institute, University of Colorado（科罗拉多大学可再生与可持续能源研究所）；Lodestar Research Corporation（洛德斯特研究公司）；Center for Integrated Plasma Studies, University of Colorado（科罗拉多大学综合等离子体研究中心）；General Atomics（通用原子能公司）；Massachusetts Institute of Technology（麻省理工学院）
Predicting core transport in ITER baseline discharges with neon injections
University of California San Diego（加州大学圣地亚哥分校）；General Atomics（通用原子能公司）；Oak Ridge National Laboratory（橡树岭国家实验室）；Massachusetts Institute of Technology（麻省理工学院）；Proxima Fusion
Autoregressive long-horizon prediction of plasma edge dynamics
Computational Sciences and Engineering Division, Oak Ridge National Laboratory（橡树岭国家实验室计算科学与工程部）；Fusion Energy Division, Oak Ridge National Laboratory（橡树岭国家实验室等离子体能源部）；Computer Science and Mathematics Division, Oak Ridge National Laboratory（橡树岭国家实验室计算机科学与数学部）
Harnessing Toroidal Neutral Flows to Enhance Divertor Particle Exhaust
Gauss Fusion GmbH（高斯聚变有限公司）；Oak Ridge National Laboratory（橡树岭国家实验室）；United Kingdom Atomic Energy Authority（英国原子能管理局）；University of York（约克大学）；RI Research Instruments GmbH（RI研究仪器有限公司）
