Non-linear modelling of performance limiting MHD and disruptions in spherical tokamaks
球形托卡马克性能限制 MHD 和破坏的非线性建模
基本信息
- 批准号:2910483
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:英国
- 项目类别:Studentship
- 财政年份:2023
- 资助国家:英国
- 起止时间:2023 至 无数据
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
For MAST-U to reach high performance, long pulse operation and contribute to the design of STEP, it is essential to understand, avoid, mitigate or control MHD instabilities which could lead to degraded confinement in spherical tokamaks. It is also important to improve our understanding of the pathways to disruptions so that we may better predict and avoid them. The project will start by analysing data from MAST-U high-performance experiments to identify important instabilities (such as neoclassical tearing modes). Non-linear 3D MHD modelling using JOREK will then be performed and compared to experiments. 3D MHD fields modelled during such instabilities will also be used to trace fast particle trajectories or in disruptions the generation of runaway electrons. Next steps of the project will be to explore strategies to avoid or mitigate these instabilities, which will inform both future MAST-U operation and help the design of STEP. It may also be possible to investigate the disruption thermal quench process and test theories, for example from the Solar Physics community or by Boozer Fast magnetic reconnection and the ideal evolution of a magnetic field.The project aligns well with the Fusion Science & Technology research performed at Durham University.The student will be mainly based at UKAEA, but it would be desirable to also include long stays at Durham throughout the project, possibly twice every 6-months. The student will attend relevant induction and research training at the university. There will be regular contact between the student, UKAEA supervisors and the university supervisor, through emails and Teams/Zoom calls (generally weekly), visits of the university supervisor to UKAEA and the student to Durham. Additional collaboration with the NSTX-U team would be highly desirable, and training on MHD codes will be given by UKAEA experts and through participation in the code annual general meeting.
为了使 MAST-U 实现高性能、长脉冲运行并为 STEP 的设计做出贡献,必须了解、避免、减轻或控制 MHD 不稳定性,这种不稳定性可能导致球形托卡马克的约束能力下降。提高我们对破坏途径的理解也很重要,以便我们可以更好地预测和避免它们。该项目将首先分析 MAST-U 高性能实验的数据,以确定重要的不稳定性(例如新古典撕裂模式)。然后将使用 JOREK 进行非线性 3D MHD 建模并与实验进行比较。在这种不稳定性期间建模的 3D MHD 场还将用于追踪快速粒子轨迹或扰乱失控电子的产生。该项目的下一步将是探索避免或减轻这些不稳定性的策略,这将为未来的 MAST-U 运行提供信息并帮助 STEP 的设计。还可以研究破坏热淬灭过程和测试理论,例如来自太阳物理学界或通过 Boozer 快速磁重联和磁场的理想演化。该项目与进行的聚变科学与技术研究非常吻合学生将主要在 UKAEA 工作,但最好在整个项目期间在杜伦大学长期停留,可能每 6 个月两次。学生将在大学参加相关的入门和研究培训。学生、UKAEA 主管和大学主管之间将通过电子邮件和 Teams/Zoom 电话(通常每周一次)、大学主管访问 UKAEA 以及学生访问达勒姆等方式进行定期联系。我们非常希望与 NSTX-U 团队进行更多合作,并且 UKAEA 专家将通过参加代码年度大会来提供有关 MHD 代码的培训。
项目成果
期刊论文数量(0)
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专利数量(0)
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