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

该奖项将支持三维模拟的基础研究，包括正在进行或计划进行的实验的全尺寸建模，主要工具是三维颗粒-细胞（PIC）模拟。模拟为理论思想提供了一个测试平台，一旦得到验证，就可以指导实验。高保真的全尺寸模型将提供一种方法，将参数外推到未来几年无法进行实验的制度中。该研究小组将利用一系列无与伦比的PIC代码和数据分析工具，详细了解关键的PWFA实验，并与美国国内外的实验项目密切联系。具体而言，本研究将调查以下内容：1。探索制造紧凑型LWFA或PWFA级所需的物理。2. 探索制作基于wakefield阶段的线性对撞机所需的物理。3. 对光束和激光等离子体实验进行全尺寸三维PIC模拟，例如在加州大学洛杉矶分校、SLAC、LBL的L’oasis实验室、密歇根的大力神激光器、德克萨斯的千万亿瓦特激光器和英国的RAL。4. 继续开发PIC基础设施，包括简化的PIC算法。5. 继续发展预测理论和标度定律。高能密度科学（HEDS）领域的强激光和束物质相互作用对基于等离子体的加速和辐射源，甚至对快速点火器聚变概念产生了影响。紧凑型粒子加速器可能最终对粒子物理学、材料科学、结构生物学、医学、聚变研究和核废料嬗变产生影响。在这项资助下培养的学生和博士后研究人员将成为21世纪计算科学和工程领域的劳动力以及HEDS专家的一部分。加州大学洛杉矶分校的代码和算法正在被世界各地的其他团体使用。这笔补助金资助了一位女研究生。目前正在努力与佛罗里达农工大学（Florida a&m）——一所历史悠久的黑人大学——分享该小组的并行模拟代码。

This award will support basic research with three-dimensions simulations including full-scale modeling of ongoing or planned experiments with the primary tool being three-dimensional particle-in-cell (PIC) simulations. The simulations provide a test bed for theoretical ideas and, once validated, a method to guide experiments. High-fidelity full-scale modeling will provide a means to extrapolate parameters into regimes that will not be accessible to experiments for years to come. The research group will exploit an unmatched array of PIC codes and data analysis tools, a detailed understanding of the key PWFA experiments, and close connections to experimental programs within the US and abroad. In particular, the research will investigate the following 1. Explore the physics necessary to make a compact LWFA or PWFA stage. 2. Explore the physics necessary to make a linear collider based on wakefield stages a reality. 3. Carry out full-scale 3D PIC simulations of beam and laser-plasma experiments, e.g., at UCLA, SLAC, the L'OASIS lab at LBL, the Hercules laser at Michigan, the Texas Petatwatt laser, and RAL (England). 4. Continue to develop the PIC infrastructure including reduced PIC algorithms. 5. Continue to develop predictive theory and scaling laws. The High Energy Density Science (HEDS) area of intense laser and beam-matter interactions has an impact on plasma-based acceleration and radiation sources, and even on the fast ignitor fusion concept. Compact particle accelerators might eventually have an impact on particle physics, material science, structural biology, medicine, fusion research, and transmutation of nuclear waste. 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 HEDS. UCLA codes and algorithms are being used by other groups throughout the world. This grant supported a female graduate student. An effort is underway to share this group's parallel simulation codes with Florida A&M, a historically black university.