3-D Effects on Tokamak Plasma Stability

对托卡马克等离子体稳定性的 3-D 影响

• 批准号: 2440150
• 金额: --
• 依托单位: University of York
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2440150
• 关键词: Effects; Tokamak; Plasma; Stability

I graduated from Loughborough University with a BSc in Mathematics back in 2017, submitting my dissertation on "Optimal Route Across Hilly Terrain". I then worked as a software developer in the insurance industry for a couple of years before scrapping the corporate life to continue pursuing academia, with the objective of doing something that suits my interest in visual, physical applications of mathematics as well as making a positive impact on the planet. This led me to pursue a PhD, in particular within the Fusion CDT due to the ever increasing need for alternative energy sources as our hunger for energy grows.ELMs (edge-localised modes) are violent eruptions that occur at the edge of plasmas. If uncontrolled, they will cause excessive erosion on next step tokamaks; for example ITER will only be able to survive ~10 of the largest ELMs before the damage will put it out of action for extended maintenance. On ITER, it is planned to apply 3D magnetic perturbations as an approach to control these ELMs. I will be working with the ELITE code - an ongoing collaboration between the University of York and General Atomics, recently extended to calculate the plasma response to these 3D magnetic perturbations and the resulting 3D equilibrium. My research will have a focus on "3D Effects on Tokamak Plasma Stability" and will be supervised by Prof. Howard Wilson. In particular some of my objectives are; -Benchmarking the new 3D ELITE code against other approaches.-Using ELITE in order to develop an understanding of how ELMs and the pedestal region are influenced by 3D effects.-Further extending the model to include non-ideal effects such as plasma resistivity.-Explore the effects of a conducting wall around the plasma.-Explore the consequences for equilibria characteristic of the STEP and ITER plasmas.Research into these areas is extremely important as it will allow us to better understand how to control or avoid ELMs, which is vital for the lifespan of next step tokamaks and hence development of fusion energy.

我于 2017 年从拉夫堡大学毕业，获得数学学士学位，并提交了题为“穿越丘陵地形的最佳路线”的论文。然后，我在保险行业担任了几年软件开发人员，然后放弃了公司生活，继续从事学术事业，目标是做一些符合我对数学的视觉、物理应用的兴趣的事情，并对地球产生积极的影响。这促使我攻读博士学位，特别是在 Fusion CDT 领域，因为随着我们对能源的渴望不断增长，对替代能源的需求不断增加。ELM（边缘局域模式）是发生在等离子体边缘的剧烈喷发。如果不加控制，它们将对下一步托卡马克造成过度侵蚀；例如，ITER 只能在大约 10 个最大的 ELM 中幸存，然后损坏就会导致其无法进行长期维护。在 ITER 上，计划应用 3D 磁扰动作为控制这些 ELM 的方法。我将使用 ELITE 代码 - 约克大学和通用原子公司之间正在进行的合作，最近扩展到计算等离子体对这些 3D 磁扰动的响应以及由此产生的 3D 平衡。我的研究重点是“托卡马克等离子体稳定性的 3D 效应”，并将由霍华德·威尔逊教授指导。我的一些目标特别是： -将新的 3D ELITE 代码与其他方法进行基准测试。-使用 ELITE 来了解 3D 效应如何影响 ELM 和基座区域。-进一步扩展模型以包括等离子体电阻率等非理想效应。-探索等离子体周围导电壁的影响。-探索 STEP 和 ITER 等离子体的平衡特性的后果。对这些领域的研究极其重要，因为 将使我们更好地了解如何控制或避免超限LM，这对于下一步托卡马克的寿命以及聚变能的发展至关重要。