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.

Terahertz驱动的加速度以及对非相对论和相对论粒子梁的操纵正在迅速发展为在新型加速器方法的驱动器中中心阶段。在Cockcroft Institute（在CI Core和配额博士学位的学生的支持下），我们进行了[1]在介电 - 衬里的波导中，首先是原理证明的相位速度匹配的相互作用，可加速10 keV。在最近的Clara运行中，我们证明了[2]记录相对论35.5 MEV，20-100 PC电子束的THZ驱动线性加速度，并进行了对束的高级操纵，以显示出DECHIRPING和MICRORO-BUNCHES产生所需的调节。同时，我们已经展示了如何使用MEV策略中的链式波导来维持分级加速器中的束质量[3]。我们还在探索非相关的光束，该光束聚焦在我们的100个KEV非相关实验钻机上，在Dailesbury实验室的专用掩体中，最近使用THZ驱动的结构证明了电子束偏转，我们在其中观察到了电子束屏幕上的条纹。我们现在的目的是证明可以通过THZ加速可以实现对MEV束能量的加速度，并且可以通过同步THZ压缩来实现束控制。我们的工作正在显示快速的进步，但现在我们需要证明这些进步提供更长的光束线并因此具有更大的能量设施的能力，并解决了使用多阶段THZ驱动结构的与光束相关的问题。目前，这是一个尚未解决的问题，因为没有光束线设计将在加速过程中遵循多个结构，同时保持光束质量，并且该项目的学生将开发出第一个完整的THZ-DLA完整设施设计。该学生将使用100 keV来源在THZ Bunker上测试梁线概念，我们很快就会在Daesbury实验室进行调试。