The ORION Center for Advance Accelerator and Beam Physics Research

斯坦福大学/加州大学洛杉矶分校/南加州大学/SLAC合作提出的这项建议要求支持一个名为猎户座中心的多机构中心，致力于先进的加速器和束流物理研究。束流物理研究的目标是了解未来粒子加速器的物理学和发展技术。基于等离子体和激光的加速器概念有望继续增加可用能量，改善光束亮度，并达到非凡的能量密度。这些进展将有可能对从粒子物理到相干辐射产生再到高能量密度等离子体科学等科学产生深远影响。猎户座中心的基础将是斯坦福直线加速器中心(SLAC)的专门加速器和基础设施，该中心将可使用这些加速器和基础设施。研究将从最终聚焦测试束(FFTB)的实验开始，FFTB是SLAC主线加速器(LINAC)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。FFTB将至少再使用一年，直到X射线自由电子激光研究需要它。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，而这些实验是猎户座中心不可或缺的一部分。从长远来看，实验活动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至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：猎户座中心的雄心是进行突破性的束流物理、高能量密度等离子体和辐射产生研究。如果成功，它将导致在几个领域影响粒子物理和基础研究的设备。一项新的外展计划将通过加州社区学院系统接触到代表不足的学生和教师。

This proposal from a Stanford/UCLA/USC/SLAC collaboration requests support for a multi-agency Center, called the ORION Center, devoted to advanced accelerator and beam physics research. Beam physics research has the goal of understanding the physics and developing the technologies of future particle accelerators. Accelerator concepts based on plasmas and lasers have the promise of continuing the growth in available energy, improving beam brightness, and reaching extraordinary energy densities. Such advances will have the potential of far reaching impact on sciences ranging from particle physics to coherent radiation generation to high energy density plasma science. 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 linear accelerator (linac) that can deliver 30 GeV electron and positron beams. The FFTB will be available for at least one more year until it is needed for X-ray FEL research. 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, experimental activities 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 Impacts: The ambition of the ORION Center is to perform breakthrough beam physics, high energy density plasma, and radiation generation research. If successful, it will lead to devices that impact particle physics and basic research in several fields. A novel outreach program will reach underrepresented students and teachers through the California community college system.