High-Intensity Beam Transport Using Nonlinear Optics

使用非线性光学的高强度光束传输

• 批准号: 1414681
• 负责人: Timothy Koeth
• 金额: $ 30.68万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1414681&HistoricalAwards=false
• 关键词: Intensity; Beam; Transport; Using; Nonlinear

While the best-known application for particle accelerators is associated with high-energy physics, other applications such as cancer treatment and materials processing are becoming increasingly important. Since the pioneering accelerators of the 1930s the maximum energy to which particles can be accelerated, known as the energy frontier, has increased many orders of magnitude. The intensity frontier, which refers to the number of particles that can be simultaneously accelerated, has progressed much more slowly, despite the importance of a number of applications that require an increased particle flux. A major limitation to accelerating more intense beams is the inherently nonlinear behavior that becomes relevant when particle beam currents are increased.It is known that linear focusing forces can stably transport a charged particle beam. This has led to a strong reliance on linear transport systems, albeit with weak nonlinear elements to correct for various unavoidable beam nonlinearities. Recent theoretical work has resulted in a fundamental rethinking of the conventional wisdom, which considered nonlinear elements as inherently problematic, and opened the possibility of a significant increase in the intensity frontier.Intellectual Merit:This award will support the use of the unique capabilities of the University of Maryland Electron Ring (UMER) to experimentally explore, in concert with simulation, a practical demonstration of using a strongly nonlinear lattice to stably transport intense beams. The research program will exploit the UMER apparatus to fill the gap between theoretical conjecture and practical realization. This will be accomplished by examining the many deviations from the simplifying assumptions necessary in a tractable analytic treatment, which are inevitable in a real experiment. In addition to the direct benefit of facilitating stable operation of accelerators at new intensity levels, the fundamental demonstration that strong nonlinearities can be beneficial, when weaker nonlinearities degrade performance, could be an important intellectual contribution to accelerator physics.Broader Impacts:Operating accelerators at higher intensity levels will have a substantial impact to areas such as materials processing, accelerator based nuclear energy generation and transmutation of nuclear waste, as well as high-energy physics. In addition to the direct research effort, this program will carry out workforce training in accelerator-related careers, educating the next generation of accelerator scientists. The outreach program carried out by the PI also creates research opportunities for both local high school students and undergraduates from across the country.

虽然粒子加速器最著名的应用与高能物理有关，但其他应用，如癌症治疗和材料加工，也变得越来越重要。 自20世纪30年代开创性的加速器以来，粒子可以被加速到的最大能量，即所谓的能量前沿，已经增加了许多数量级。 强度前沿是指可以同时加速的粒子数量，尽管许多应用需要增加粒子通量，但进展缓慢得多。 加速更强的粒子束的一个主要限制是当粒子束电流增加时，固有的非线性行为变得相关。 这导致了对线性传输系统的强烈依赖，尽管具有弱非线性元件来校正各种不可避免的光束非线性。 最近的理论工作导致了传统智慧的根本反思，认为非线性元素固有的问题，并打开了一个显着增加的可能性，在强度front.Intellectual Merit的：这个奖项将支持使用的独特能力的马里兰州大学电子环（UMER）的实验探索，与模拟，一个实际的演示使用强非线性晶格稳定传输强光束。 本研究计画将利用UMER仪器来填补理论猜想与实际实现之间的差距。 要做到这一点，就要检查在一个易于处理的分析处理中所必需的简化假设的许多偏差，这些偏差在一个真实的实验中是不可避免的。 除了促进加速器在新的强度水平下稳定运行的直接好处外，当较弱的非线性降低性能时，强非线性可以是有益的这一基本证明可能是对加速器物理学的重要智力贡献。更广泛的影响：在更高强度水平下运行加速器将对材料处理、基于加速器的核能发电和核废料嬗变以及高能物理等领域产生重大影响。 除了直接的研究工作外，该计划还将开展加速器相关职业的劳动力培训，教育下一代加速器科学家。 PI开展的外展计划还为当地高中生和来自全国各地的本科生创造了研究机会。