The ORION Center for Advanced Accelerator and Beam Physics Research

这项提案是斯坦福大学、加州大学洛杉矶分校、南加州大学和SLAC合作的两个相互关联的提案之一，目的是资助一个名为猎户座中心的中心，致力于先进的加速器和束流物理研究。它们一起包括进行广泛的开创性实验，建立一个共享的、面向用户的设施，以及开发和使用相当于实验设施的超级计算专业知识和资源。物理将是多样化的，包括高能量密度等离子体物理，超短脉冲电子源的束流物理，激光直接加速，束-等离子体相互作用产生X射线，以及与实验相结合的模拟和可视化。猎户座中心的基础将是斯坦福大学直线加速器中心(SLAC)的专门加速器和基础设施，该中心将提供给该中心。研究将从最终聚焦测试束(FFTB)的实验开始，FFTB是SLAC主直线加速器末端的一条广泛使用仪器的光束线，可以提供30 GeV的电子束和正电子束。它是一个特殊的设备，用于非线性正电子/物质和电子/物质相互作用的实验。了解这些相互作用对于基于等离子体的高能对撞机至关重要，这些实验是猎户座中心不可或缺的一部分。从长远来看，实验将集中在猎户座研究设施，该设施将基于下一代直线对撞机测试加速器(NLCTA)，这是SLAC的一个运行中的直线加速器，能够提供50到350 MeV的束流。猎户座设施将以用户为导向，向研究先进加速器科学和技术的方方面面的实验者开放。更广泛的影响先进的加速器研究对年轻科学家很有吸引力，因为它结合了前沿的实验、理论和基于计算机的研究、最先进的技术、许多创新的机会，以及对粒子物理的潜在贡献。出于类似的原因，本科生和研究生的研究和教育项目被证明相当有吸引力。参与这项提议的团体有将高质量教育作为其活动组成部分的传统。教育推广计划将超越这些传统的教育活动，与感兴趣的当地社区大学建立合作伙伴关系，让他们的教职员工和学生参与进来，并与一个描述猎户座研究项目的网站合作。

This proposal is one of two linked proposals from a collaboration of Stanford, UCLA, USC, and SLAC to fund a Center, called the ORION Center, devoted to advanced accelerator and beam physics research. Together they include performing a wide range of pioneering experiments, building a shared, user-oriented facility, and developing and using supercomputing expertise and resources that are equivalent to experimental facilities. The physics will be diverse, including high energy-density plasma physics, beam physics of ultra-short pulse electron sources, direct laser acceleration, x-ray generation via beam-plasma interactions, and simulation and visualization integrated with experiments.Intellectual Merit The foundation of the ORION Center will be specialized accelerators and infrastructure at the Stanford Linear Accelerator Center (SLAC) that will be available to the Center. Research will begin with experiments at the Final Focus Test Beam (FFTB), which is an extensively instrumented beamline at the end of the SLAC main linac that can deliver 30 GeV electron and positron beams. It is an exceptional facility for experiments in non-linear positron/matter and electron/matter interactions. Understanding these interactions is crucial for plasma based high-energy colliders, and these experiments are an integral part of the ORION Center.In the longer term, experiments will be concentrated at the ORION Research Facility, which will be based on the Next Linear Collider Test Accelerator (NLCTA), an operating linac at SLAC capable of providing beams from 50 to 350 MeV. The ORION Facility will be user-oriented and open to experimenters studying all aspects of advanced accelerator science and technology. Broader ImpactsAdvanced accelerator research is attractive to young scientists because of the combination of forefront experimental, theoretical and computer-based research, state-of-the-art technologies, many opportunities for creativity, and the potential contributions to particle physics. For similar reasons, undergraduate and graduate research and education programs have proven quite attractive. The groups involved with this proposal have traditions of high-quality education as integral parts of their activities. The education outreach program will go beyond these traditional educational activities through partnerships with interested, local community colleges that involve their faculty and students and with a website describing ORION research projects.