Continuation of Full-Scale Three Dimensional Numerical Experiments of High-Intensity Particle and Laser Beam Matter Interactions

粒子加速器在社会中无处不在，因为它们被用于粒子物理学，材料科学，结构生物学，医学和核废料的嬗变。在某些情况下，这些加速器超过一英里长，耗资数十亿美元。如果能够开发出一种更便宜、更紧凑的新加速器技术，它将改变我们使用粒子加速器的能力，并使它们能够应用于更广泛的科学和社会效益问题。这项研究将研究基础科学问题，旨在开发基于等离子体波（这些波在完全电离的气体中移动）的紧凑型粒子加速器，以接近光速移动。它还需要生成可以在全国最大的计算机上使用的最先进的软件。该奖学金所培养的学生和博士后研究人员将成为21世纪世纪计算科学和工程领域的一员，以及等离子体物理和加速器物理方面的专家。该奖学金旨在进行高强度粒子和激光束-物质相互作用的全尺寸三维数值实验，以显著推进对基础高能密度科学（HEDS）的理解。关于超强激光和粒子束等离子体相互作用。这种理解将有助于寻求使基于等离子体的加速器阶段用于高能物理对撞机，下一代光源，医学和国土安全。 这项工作将继续将基础研究与三维模拟相结合，包括对正在进行和计划进行的实验进行全面的粒子模拟。高保真全尺寸建模提供了将参数外推到未来几年无法进行实验的机制中的方法。在过去的十年中，已经开发出了用于HEDS研究的最先进的PIC代码和数据分析工具的层次结构，不仅包括必要的物理学，而且可以扩展到超过1，600，000个核心，并且可以在当前的许多核心硬件上运行，包括GPU和Intel Phi。有了这套工具，加州大学洛杉矶分校等离子体组的模拟是唯一的定位，继续朝着确定在未来十年内建立一个紧凑的X射线自由电子激光器（XFEL）的可行性取得重大进展，和未来的线性对撞机的基础上由激光或粒子束驱动的韦克菲尔德部分。

Particle accelerators are ubiquitous in society as they are used in particle physics, materials science, structural biology, medicine, and transmutation of nuclear waste. In some cases these accelerators are more than a mile long and cost billions of dollars. If a new cheaper and more compact accelerator technology could be developed, it would transform our ability to use particle accelerators and enable their application to an even wider range of problems of scientific and societal benefit. This research will examine fundamental scientific questions aimed at developing compact particle accelerators based on plasma waves (these are waves moving in fully ionized gases) moving near the speed of light. It will also require generating state-of-the-art software that can be used on the nation's largest computers. The students and post-doctoral researchers trained under this grant will be part of the twenty first century work force in computational science and engineering as well as experts in plasma physics and accelerator physics.This is an award to perform full-scale three-dimensional numerical experiments of high-intensity particle and laser beam-matter interactions to significantly advance the understanding of basic high-energy density science (HEDS) on ultra intense laser and particle beam plasma interactions. This understanding will aid in the quest to make plasma based accelerator stages for use in high energy physics colliders, next generation light sources, medicine, and homeland security. This work will continue to blend basic research with three-dimensional simulations, including full-scale particle-in-cell modeling of ongoing and planned experiments. High-fidelity full-scale modeling provides the means to extrapolate parameters into regimes that will not be accessible to experiments for years to come. During the past decade, a hierarchy of state-of-the-art PIC codes and data analysis tools for HEDS studies has been developed that not only include the necessary physics but also scale to more than 1,600,000 cores and can run on current many core hardware including GPUs and Intel Phi's. With this set of tools, the UCLA Simulation of Plasma Group is uniquely positioned to continue to make significant progress towards determining the feasibility of building a compact X-Ray Free Electron Laser (XFEL) in the next decade, and a future linear collider based on wakefield sections driven by lasers or particle beams.