Program for Development and Demonstration of Pioneering Accelerator Technology

加速器是科学的强大工具和工业的引擎，对社会产生巨大影响。康奈尔大学的这项研究计划在开创性的工作加速器设备中实现了创新的加速器概念。具体而言，该计划侧重于两个转型主题：（1）开发用于粒子加速的非常紧凑和节能的超导腔，这将使一类新的强大的紧凑型加速器成为可能，以及（2）通过称为光学随机冷却的技术显着提高粒子对撞机的亮度，这有望显着提高粒子束的质量。 康奈尔大学在开创性加速器技术方面的工作为新的加速器铺平了道路，这些加速器是材料，生物系统，分子，原子，原子核和自然界中最基本粒子的更强大的探针。 该计划也将影响工业加速器。特别是，康奈尔大学将开发的技术对加速器至关重要，加速器是医学，国防，甚至安全核能的关键工具。这项研究还直接有助于本科生和研究生在尖端科学，工程和技术，美国劳动力迫切需要的技能教育。在夏季，来自社区学院的学生将在一个他们无法获得的环境中接受研究指导。超导射频（SRF）是现代加速器的黄金标准，也是加速带电粒子束的最节能的方法，但目前SRF技术的复杂性、尺寸和成本限制了SRF腔在大型科学加速器中的应用。然而，最近的发展已经导致SRF腔的RF表面电阻的急剧减小，从而允许新一代紧凑的SRF腔。该计划的SRF研究部分将专注于开发这种非常紧凑的高频SRF腔。这些将通过提供坚固、紧凑、节能和高光束功率的加速结构，为小型大学、工业、国家安全和医疗应用提供全新的SRF驱动加速器。光学随机冷却承诺许多数量级更快的冷却速率比传统的随机冷却系统，在微波政权。较冷的光束更容易聚焦到高强度。利用冷却的强子束，质子和重离子对撞机可以实现更高的亮度;光学随机冷却是目前唯一的候选技术，用于主动冷却电子，正电子和μ子。

Accelerators are powerful tools for science and engines for industry, with enormous impact on society. This research program by Cornell University implements innovative accelerator concepts in pioneering, working accelerator devices. Specifically, this program focuses on two transformational topics: (1) The development of very compact and energy efficient superconducting cavities for particle acceleration, which will enable a new class of powerful, compact accelerators, and (2) dramatic improvements in luminosity of particle colliders via a technique called optical stochastic cooling which promises to significantly improve the quality of particle beams. Cornell University's work on pioneering accelerator technology paves the way for new accelerators that are ever more powerful probes of materials, biological systems, molecules, atoms, nuclei and the most fundamental particles in nature. This program will impact accelerators for industry as well. In particular, the technologies that Cornell will develop are essential for the accelerators that are critical tools for medicine, national defense, and perhaps for safe nuclear energy. This research also contributes directly to the education of undergraduate and graduate students in cutting-edge science, engineering and technology, a skillset urgently needed for the U.S. workforce. During summers, students from community colleges will be mentored in research in an environment that would otherwise be unavailable to them. For many it will be a life altering experience.Superconducting RF (SRF) is the gold-standard for modern accelerators and the most energy efficient means of accelerating a beam of charged particles, but complexity, size, and cost of the current SRF technology until now have limited SRF cavity application to large-scale scientific accelerators. However, recent developments have resulted in drastic reductions of the RF surface resistance of SRF cavities, allowing for a new generation of compact SRF cavities. The SRF research part of this program will focus on the development of such very compact, high-frequency SRF cavities. These will enable completely new SRF-driven accelerators for small-scale university, industrial, national security, and medical applications, by offering robust, compact, energy efficient, and high beam power capable accelerating structures. Optical stochastic cooling promises many orders of magnitude faster cooling rates than conventional stochastic cooling systems that operate in the microwave regime. A cooler beam is more readily focused to high intensity. With cooled hadron beams, proton and heavy ion colliders can achieve significantly higher luminosities; and optical stochastic cooling is presently the only candidate technology for active cooling of electrons, positrons, and muons.