Mathematical Modeling and Control of Plasmas in Magnetic Fusion

磁聚变中等离子体的数学建模和控制

• 批准号: 0532636
• 负责人: Eugenio Schuster-Rosa
• 金额: $ 1.5万
• 依托单位: Lehigh University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0532636&HistoricalAwards=false
• 关键词: Mathematical; Modeling; Control; Plasmas; Magnetic

The objective of this workshop is to initiate a dialogue between tokamak fusion physicists and engineers, and specialists in mathematical control theory, with the intended outcome of starting collaborative efforts to solve some of the many mathematical modeling and control problems that will arise in the International Thermonuclear Experimental Reactor (ITER) over the next 5-10 years. The ITER tokamak, an international $5 billion project that includes the European Union, the People's Republic of China, the Republic of Korea, the Russian Federation, Japan, and the United States, will confine a mixture of ionized isotopes of hydrogen, also known as plasma, at a temperature of around 100 million degrees centigrade, fusing the isotopes of hydrogen into helium and converting some of the matter involved in the reaction into a much larger amount of energy. Control researchers will receive a good general overview of the major objectives of fusion research and obtain a basic understanding of the many control problems that must be solved to achieve those objectives. Fusion scientists will obtain an improved understanding of available control technologies and expertise with some feeling for how applicable these techniques are to their own control problems. Both communities will learn what is needed to initiate a collaborative activity. The workshop will consist of two days of presentations and discussion. Day 1 will provide an overview of tokamak fusion and the associated control problems. Day 2 will provide a selected cross-section of state-of the art mathematical control theories, which may be beneficial in fusion control problems. A tour of the DIII-D tokamak and fusion facility will be provided to enhance the learning experience for control researchers.At the present rate of energy use, and considering the estimate of world population growth, experts predict an energy shortfall in less than fifty years. Although the accuracy of this prediction can be discussed, it is a fact that fossil fuel energy is becoming more expensive and polluting. The need for new sources of energy to supply this shortfall will become a critical problem in the near future. As a source of energy, fusion would have many advantages: abundant fuel supply, no risk of nuclear accident, no air pollution, no high-level nuclear waste, and no generation of nuclear weapon materials. There is consensus in the fusion community that active control will be one of the key enabling technologies. With further advancements in reduced-order fusion modeling, advances in control systems for fusion will continue, including vertical and shape control, kinetic and current profile control, MHD (magnetohydrodynamic) stabilization and plasma transport reduction. The visibility that this workshop will give to the problem of fusion plasma control will attract high quality mathematicians and engineers to work on this important topic. As one outcome of this workshop, a large number of challenging problems will become known to graduate students in mathematics, physics, and controls. The large number of problems, their importance to the welfare of society as a whole, and their challenging nature can provide a focused objective for development of many new and interesting mathematical control techniques.

本次研讨会的目的是启动托卡马克聚变物理学家和工程师之间的对话，并在数学控制理论的专家，与预期的结果开始合作努力，以解决一些许多数学建模和控制问题，将出现在国际热核聚变实验反应堆（ITER）在未来5-10年。 ITER托卡马克是一个国际性的50亿美元项目，包括欧盟、中华人民共和国、大韩民国、俄罗斯联邦、日本和美国，将把氢的电离同位素混合物，也称为等离子体，限制在大约1亿摄氏度的温度下，将氢的同位素融合成氦，并将反应中的一些物质转化为更大的能量。控制研究人员将收到一个很好的总体概述的主要目标的融合研究，并获得了基本的理解，必须解决的许多控制问题，以实现这些目标。 聚变科学家将获得对现有控制技术和专业知识的更好理解，并对这些技术如何适用于他们自己的控制问题有一定的感觉。 两个社区都将学习发起合作活动所需的内容。研讨会将包括两天的演讲和讨论。 第一天将概述托卡马克聚变和相关的控制问题。 第2天将提供一个选定的横截面的最先进的数学控制理论，这可能是有益的融合控制问题。 将提供DIII-D托卡马克和聚变设施的参观，以增强控制研究人员的学习经验。以目前的能源使用速度，并考虑到世界人口增长的估计，专家预测能源短缺在不到50年。虽然这一预测的准确性可以讨论，但化石燃料能源变得越来越昂贵和污染是事实。在不久的将来，对新能源的需求将成为一个关键问题。作为一种能源，聚变有许多优点：燃料供应充足，没有核事故的风险，没有空气污染，没有高放射性核废料，不产生核武器材料。在核聚变领域，人们一致认为，主动控制将是关键的使能技术之一。随着降阶聚变建模的进一步发展，聚变控制系统的进步将继续下去，包括垂直和形状控制，动力学和电流分布控制，磁流体动力学（MHD）稳定和等离子体输运减少。这次研讨会将使聚变等离子体控制问题的可见性将吸引高素质的数学家和工程师致力于这一重要课题。作为本次研讨会的成果之一，大量具有挑战性的问题将成为已知的数学，物理和控制的研究生。大量的问题，他们的福利的重要性，社会作为一个整体，他们的挑战性，可以提供一个重点目标的发展，许多新的和有趣的数学控制技术。