RUI: Accelerator Science at the California Polytechnic State University at San Luis Obispo

科学的进步与仪器的能力密切相关。粒子加速器是粒子物理和X射线产生的仪器。下一代粒子加速器的设计目的是探索高能物理的前沿，以及用于生物、化学、物理、材料科学和医学研究的X射线束。为了更好地了解影响这些加速器性能的物理过程，并开发粒子加速技术的新技术，加速器科学研究是必要的。加速器科学研究将在美国两个顶尖的加速器科学实验室进行，康奈尔大学的康奈尔加速器科学和教育实验室(CLASSE)和SLAC国家加速器实验室。这个奖项将使用康奈尔电子-正电子存储环测试加速器(CESRTA)，为未来的轻子存储环和X射线源检查重要的束流物理，如电子云效应、存储环中的发射度限制和快离子不稳定性。CESRTA研究计划的主要目标之一是提高我们对电子云与高能粒子束相互作用的理解。电子云限制了存储环的许多操作参数，如束流、束团间距、环能量，这些参数可以在CesrTA上进行实验测量。使用能够量化逐束和逐圈束流动力学的CesrTA束流诊断的束流动力学实验将被用于研究在电子云存在的情况下重要的轻子存储环束流动力学。此外，我们还在SLAC的高级加速器实验测试设施(FEET)和终端A测试束(ESTB)设施中进行了晶体沟道的基础加速器科学研究。沟道是当带电粒子由于晶体离子的静电场而被困在晶面之间时出现的现象。人们对将弯曲晶体用作高能电子束和正电子束的准直器和磁铁以及将晶体用作伽马射线发生器和正电子晶体波动器有着浓厚的兴趣。晶体波荡器的开发开启了创造新型光源的前景，这些光源将在技术、医学和基础科学中得到应用。这两个加速器科学研究项目都为加州大学保利分校的本科生提供了在加速器科学领域的大型加速器设施进行研究的机会。Cal Poly的学生将在物理研究的各个方面获得实践经验，从设计实验、模拟物理、构建硬件、获取数据、分析数据和发布结果。

The advancement in science is closely connected to the capabilities of instrumentation. Particle accelerators are the instruments of particle physics and x-ray production. The next generations of particle accelerators are being designed to explore the frontiers of high-energy physics and for xray beams for research in biology, chemistry, physics, material science and medicine. Accelerator science research is necessary to gain greater understanding of the physical processes that can impact the performance of these accelerators and develop new techniques of particle acceleration technology. The accelerator science research will be conducted at two of the premier laboratories in the United States in accelerator science, the Cornell Laboratory for Accelerator-Based Sciences and Education (CLASSE) at Cornell University and the SLAC National Accelerator Laboratory.This award will use the Cornell Electron-Positron Storage Ring Test Accelerator (CesrTA), to examine important beam physics, such as the electron cloud effect, emittance limitations in storage rings, and the fast ion instability, for future lepton storage rings and x-ray sources. One of the key goals of the CesrTA research program is to improve our understanding of the interaction of the electron cloud with the high-energy particle beam. The electron cloud constrains many of the operational parameters of the storage ring such as beam current; bunch spacing, ring energy, and these parameters can be measured experimentally on CesrTA. Beam dynamics experiments using the CesrTA beam diagnostics capable of quantifying bunch-by-bunch and turn-by-turn beam dynamics will be used to study important lepton storage ring beam dynamics in the presence of the electron cloud. In addition, we conduct basic accelerator science research on crystal channeling at the Facility for Advanced Accelerator Experimental Tests (FACET) and the End Station A Test Beam (ESTB) facility at SLAC. Channeling is the phenomenon that arises when charged particles become trapped between the crystal planes due to the electrostatic field of the crystal ions. There is strong interest in using bent crystals as collimators and magnets for high-energy electron and positron beams and well as using crystals as generators of gamma-rays as a positron crystal undulator. The development of a crystal undulator opens the prospect of creation of novel light sources that will find their application in technology, medicine and basic sciences. Both accelerator science research projects provide Cal Poly undergraduate students research opportunities at large accelerator facilities in accelerator science. Cal Poly students will gain hands-on experience in all facets of the physics research from designing an experiment, simulating the physics, building the hardware, taking the data, analyzing the data, and publishing the results.