Development of the Ionization-Injection Scheme for Generating High-Quality, Multi-GeV Electron Beams from a Plasma Wake Field Accelerator, Using the FACET Facility at SLAC

使用 SLAC 的 FACET 设施开发电离注入方案，从等离子体尾流场加速器产生高质量、多 GeV 电子束

• 批准号: 1415386
• 负责人: Chan Joshi
• 金额: $ 105万
• 依托单位: University of California-Los Angeles
• 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 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1415386&HistoricalAwards=false
• 关键词: Development; Ionization; Injection; Scheme; Generating

Plasma acceleration is a cutting-edge technique for accelerating charged particles such as electrons using the electric field associated with a plasma structure, such as an electron plasma wave. The plasma structure is created using either ultra-short laser pulses or particle beams. This technique offers a way to build high performance particle accelerators of much smaller size than conventional accelerator techniques. The stimulating laser or electron beam creates a charge "wake" in the plasma. Particles "ride" this wave and are thus accelerated in this technique called plasma wakefield acceleration (PWA). Exploiting new modes for particle acceleration can have significant impact, as accelerators represent a significant technological tool addressing many applications in medicine and industry.This award will focus on developing ionization injection for plasma wakefield accelerators. To make a practical PWA device, a narrow energy spread of electrons of sufficient energy must be controlled and injected into the plasma. This award will allow the development of these electron bunches, called bunchlets. The work will include a demonstration that the bunchlets can be controlled and can be tuned to a desired energy.Intellectual MeritIf successful this work will solve the problem of precisely (self-) placing an ultra-short electron bunch in the plasma wake that can extract a significant amount of energy from the wake and has the potential to generate extremely low emittance beams. The successful demonstration of the ideas presented here will greatly impact both future accelerator and light source development.Broader ImpactsModern beam physics/accelerator science needs a workforce with training in broader areas than currently offered within the conventional accelerator field such as laser science, plasma physics and atomic physics. This award will provide this type of training to excellent students with just such a broad background. If successful, the ideas pursued in this work could potentially transform future particle accelerator and light sources.

等离子体加速是利用与等离子体结构相关的电场（如电子等离子体波）加速带电粒子（如电子）的尖端技术。等离子体结构是使用超短激光脉冲或粒子束创建的。这种技术提供了一种方法来建立高性能的粒子加速器的尺寸比传统的加速器技术小得多。激发激光或电子束在等离子体中产生电荷“尾流”。粒子“骑”这个波，从而加速这种技术称为等离子体韦克菲尔德加速（PWA）。 开发新的粒子加速模式可以产生重大影响，因为加速器代表了解决医学和工业中许多应用的重要技术工具。该奖项将专注于开发等离子体韦克菲尔德加速器的电离注入。 为了制造实用的PWA装置，必须控制具有足够能量的电子的窄能量分布并将其注入到等离子体中。该奖项将允许这些电子束的发展，称为束。这项工作将包括一个示范，束可以控制，可以调整到所需的energy.Intellectual MeritIf成功的这项工作将解决的问题，精确（自我）放置在等离子体尾流，可以提取大量的能量从唤醒超短电子束，并有可能产生极低的发射率光束。这里提出的想法的成功演示将极大地影响未来的加速器和光源的发展。更广泛的影响现代束流物理/加速器科学需要一个劳动力与培训更广泛的领域比目前提供的传统加速器领域，如激光科学，等离子体物理和原子物理。该奖项将为具有如此广泛背景的优秀学生提供这种类型的培训。如果成功，这项工作中追求的想法可能会改变未来的粒子加速器和光源。