Injection system of an ERL based electron-hadron collider

LHeC（大型强子电子对撞机）是一种新的高能电子-强子对撞机，目前正在讨论其概念设计。LHeC的一个选择是使用高电流多匝ERL（能量回收直线加速器）作为电子加速器。LHeC（大型强子电子对撞机）发展的关键一步将是建造一个测试设施PERLE（强大的能量回收实验直线加速器）。PERLE是一个建议的三匝ERL的最大能量为400 MeV和20 mA的束流使用频率为802 MHz的RF腔。目前的计划是在法国奥赛的LAL建造PERLE。该项目的重点是开发和优化PERLE的注射器，然后再考虑极化和非极化选项的LHeC。注入器将包括一个高电流高重复率光阴极枪，随后是聚束和升压系统以及进入ERL的束流传输线。当考虑极化选项时，自旋旋转器也必须是注入器的一部分。做这个博士项目所花的时间将在达雷斯伯里和LAL奥赛之间分配。

A conceptual design of the LHeC (Large Hadron Electron Collider), a new higher energy electron-hadron collider, is currently under discussion. One option for the LHeC is a high current multi-turn ERL (Energy Recovery Linac) to be used as an electron accelerator. A key step towards the development of the LHeC (Large Hadron Electron Collider) would be the construction of a test facility PERLE (Powerful Energy Recovery Linac for Experiments). PERLE is a proposed three turn ERL with a maximum energy of 400 MeV and a beam current of 20 mA using RF cavities with a frequency of 802 MHz. The current plan is for PERLE to be constructed at LAL, Orsay, France. The project focuses on the developement and optimisation of the injectors for PERLE and then later for the LHeC considering both polarised and unpolarised options. The injectors will consist of a high current high repetition rate photocathode gun followed by bunching and boosting system and the beam delivery line into the ERL. When the polarised option is considered a spin rotator will also have to be part of the injector. The time spent doing this PhD project will be split between Daresbury and LAL Orsay.