Ultrafast High Brightnesss Electron Beams

超快高亮度电子束

• 批准号: 1734215
• 负责人: Pietro Musumeci
• 金额: $ 50万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-01 至 2023-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1734215&HistoricalAwards=false
• 关键词: Ultrafast; Brightnesss; Electron; Beams

This project will study the fundamental limits in peak brightness of electron accelerator beams set by the interplay between the properties of electron sources, laser technology and beam physics. Beam brightness is a key measure of performance of a particle accelerator, with electron accelerators at the core of many scientific and industrial applications. One important characteristic of these devices is that the brightness of an electron beam cannot be improved along the beamline from the source to the end-use, and instead tends to deteriorate. This is the fundamental reason why improvements to the quality of the electron beam sources are critical to improving the end-use performance of electron accelerators all around the world. The figure of merit for electron beam quality is the so called beam brightness or phase space density which depends strongly on the accelerating field the electrons see as soon as the particles are photo-emitted by a cathode surface. Increasing this field, exploring the behavior of different photocathode materials in high field environments, and developing novel diagnostics to assess the six dimensional phase space beam properties after the source are the main components of this project. Achieving unprecedented electron beam brightness will enable novel e-beam source applications such as dielectric laser acceleration, time-resolved electron microscopes and compact x-ray sources. This project will also enable training of a new generation of accelerator scientists with broad interdisciplinary preparation and full hands-on educational experience.

本项目将研究电子源、激光技术和束物理特性之间的相互作用对电子加速器束峰值亮度的基本限制。束流亮度是衡量粒子加速器性能的关键指标，电子加速器是许多科学和工业应用的核心。 这些器件的一个重要特性是电子束的亮度不能沿从源到最终用途的束线沿着提高，而是趋于恶化。 这就是为什么改进电子束源的质量对于提高全世界电子加速器的最终使用性能至关重要的根本原因。 电子束质量的品质因数是所谓的束亮度或相空间密度，其强烈地取决于粒子一被阴极表面光发射电子就看到的加速场。增加该场、探索不同光阴极材料在高场环境中的行为以及开发新型诊断方法来评估源后的六维相空间光束特性是该项目的主要组成部分。实现前所未有的电子束亮度将使新的电子束源的应用，如介质激光加速，时间分辨电子显微镜和紧凑的x射线源。 该项目还将使新一代加速器科学家的培训具有广泛的跨学科准备和充分的实践教育经验。

项目成果

High-field nonlinear optical response and phase control in a dielectric laser accelerator

• DOI: 10.1038/s42005-018-0047-y
• 发表时间: 2018-08-17
• 期刊: COMMUNICATIONS PHYSICS
• 影响因子: 5.5
• 作者: Cesar, D.;Custodio, S.;Wu, Z.
• 通讯作者: Wu, Z.

Space-Charge Aberrations in Single-Shot Time-Resolved Transmission Electron Microscopy

• DOI: 10.1103/physrevapplied.15.024050
• 发表时间: 2020-10
• 期刊: arXiv: Accelerator Physics
• 作者: P. Denham;P. Musumeci

Electro-optic sampling based characterization of broad-band high efficiency THz-FEL

基于电光采样的宽带高效 THz-FEL 表征

• DOI: 10.1364/oe.467677
• 发表时间: 2022
• 期刊: Optics Express
• 影响因子: 3.8
• 作者: Lenz, M.;Fisher, A.;Ody, A.;Park, Y.;Musumeci, P.
• 通讯作者: Musumeci, P.

Miniature light-driven nanophotonic electron acceleration and control

微型光驱动纳米光子电子加速与控制

• DOI: 10.1364/aop.461142
• 发表时间: 2022
• 期刊: Advances in Optics and Photonics
• 影响因子: 27.1
• 作者: Shiloh, Roy;Schönenberger, Norbert;Adiv, Yuval;Ruimy, Ron;Karnieli, Aviv;Hughes, Tyler;Joel England, R.;Leedle, Kenneth James;Black, Dylan S.;Zhao, Zhexin
• 通讯作者: Zhao, Zhexin

Mapping photocathode quantum efficiency with ghost imaging

通过重影成像绘制光电阴极量子效率

• DOI: 10.1103/physrevaccelbeams.23.022803
• 发表时间: 2020
• 期刊: Physical Review Accelerators and Beams
• 影响因子: 1.7
• 作者: Kabra, K.;Li, S.;Cropp, F.;Lane, Thomas J.;Musumeci, P.;Ratner, D.
• 通讯作者: Ratner, D.