THz-driven multi-stage relativistic beamline design and beam dynamics

太赫兹驱动的多级相对论光束线设计和光束动力学

• 批准号: 2905219
• 金额: --
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2905219
• 关键词: THz; driven; multi; stage; relativistic

Terahertz-driven acceleration and manipulation of non-relativistic and relativistic particle beams is rapidly evolving to centre-stage in the drive to novel accelerator methods. In the Cockcroft Institute (and supported by CI core and quota PhD students) we performed [1] the first proof-of-principle THz- driven phase-velocity-matched interaction in a dielectric-lined waveguide, with acceleration up to 10 keV. In the most recent CLARA run we demonstrated [2] record THz-driven linear acceleration of relativistic 35.5 MeV, 20-100 pC electron beams, and advanced manipulation of the bunch to show de- chirping and the modulation necessary for the generation of micro-bunches. In parallel we have shown how chained waveguides in the MeV regime can be used to maintain bunch quality in staged accelerator [3]. We are also exploring non-relativistic beams, focused around our 100 keV non-relativistic experimental rig in a purpose-built bunker at Daresbury Laboratory and recently demonstrated electron bunch deflection using THz-driven structures, where we observe the streaking on the screen of electron bunches. We are now aiming to demonstrate that acceleration to MeV beam energies can be achieved with THz acceleration, and beam control can be achieved with synchronised THz compression. Our work is showing rapid progress but now we need to demonstrate the capability of these advances to deliver a longer beamline and hence a larger energy facility, and solve the beam-related problems that using multi-staged THz-driven structures will present. Currently, this is an unsolved problem as no beamline design exists that will couple multiple structures whilst preserving beam quality during acceleration, and the student on this project will develop the first complete THz-DLA complete facility design. The student will test the beamline concepts on the THz bunker, using a 100 keV source, that we are commissioning soon at Daresbury Laboratory.

太赫兹驱动的非相对论性和相对论性粒子束的加速和操纵正在迅速发展到推动新型加速器方法的中心舞台。在科克罗夫特研究所（并得到 CI 核心和配额博士生的支持），我们在电介质衬里波导中进行了 [1] 首次原理验证 THz 驱动的相速度匹配相互作用，加速度高达 10 keV。在最近的 CLARA 运行中，我们展示了 [2] 创纪录的太赫兹驱动的相对论 35.5 MeV、20-100 pC 电子束的线性加速，以及对束束的高级操纵，以显示产生微脉冲所需的去线性调频和调制。束。同时，我们还展示了如何使用 MeV 范围内的链式波导来维持分级加速器中的束团质量 [3]。我们还在探索非相对论光束，重点围绕我们在达斯伯里实验室专门建造的掩体中的 100 keV 非相对论实验装置，最近展示了使用太赫兹驱动结构的电子束偏转，我们观察到电子屏幕上的条纹束。我们现在的目标是证明通过太赫兹加速可以实现 MeV 光束能量的加速，并且可以通过同步太赫兹压缩来实现光束控制。我们的工作正在取得快速进展，但现在我们需要展示这些进步的能力，以提供更长的光束线，从而提供更大的能源设施，并解决使用多级太赫兹驱动结构将出现的与光束相关的问题。目前，这是一个尚未解决的问题，因为不存在能够耦合多个结构同时在加速过程中保持光束质量的光束线设计，该项目的学生将开发第一个完整的 THz-DLA 完整设施设计。学生将使用我们即将在达斯伯里实验室调试的 100 keV 源在太赫兹掩体上测试光束线概念。