Advanced Accelerator Physics Research on Electron Beam Sources

该奖项允许伊利诺伊理工学院继续与阿贡国家实验室进行的一项研究计划，以确定能够产生比目前可实现的更低固有（热）发射率的明亮电子束的天然或人造光导材料。为了实现下一代光源和直线对撞机，降低明亮电子束的发射度是加速器物理领域的一个目标。为了确定生产低发射率光束的最佳光电阴极特性，将对不同材料和表面制备的样品进行调查。这项研究还应该导致潜在的表面制备技术的评估，如薄膜或原子层沉积，用于控制发射特性。该研究的另一个目标是帮助设计优化角度分辨光电发射光谱仪（ARPES），该光谱仪正在阿贡国家实验室（ANL）开发用于本征发射测量。这项研究已被物理部指定为潜在变革研究。这在本质上是具有挑战性的，但其结果可能对加速器设计产生重大的全球影响。更广泛的影响包括教育和其他研究领域的影响。这项研究还将为伊利诺伊理工学院（IIT）的学生提供参与阿贡国家实验室研究工作的机会，同时允许他们在IIT实验室为该项目做出贡献。该研究的应用导向性质有助于跨越基础研究和技术进步之间的界限。更好的光源将推动医学、地质学、环境科学以及生物、化学和物理科学的研究。

This award allows the Illinois Institute of Technology to continue a program of research undertaken with Argonne National Lab to identify natural or constructed photoemissive materials that can produce bright electron beams of lower intrinsic (thermal) emittance than is currently achievable. Lowering the emittance of bright electron beams is a goal in the field of accelerator physics for the realization of next generation light sources and linear colliders. Investigation of samples of varying materials and surface preparations will be carried out for the purpose of determining optimal photocathode characteristics for the production of low emittance beams. This research should also lead to an evaluation of potential surface preparation techniques, such as thin film or atomic layer deposition, for use in control of emission properties. Another goal of the research is to aid in design optimization of the Angle Resolved Photoemission Spectrometer (ARPES), which is being developed for intrinsic emission measurements at Argonne National Laboratory (ANL). This research has been designated by the Physics Division as Potentially Transformative Research. It is challenging in nature yet the results could have major worldwide effects on accelerator design. Broader impacts include education and impacts on other fields of research. The research proposed would also provide opportunities for students at Illinois Institute of Technology (IIT) to become involved with a research effort at Argonne National Laboratory, while allowing them to work on contributions to the project in an IIT laboratory. The application oriented nature of this research can help cross the boundary between basic research and technological advance. Better light sources will advance research in medicine, geology, environmental science, and the biological, chemical and physical sciences.