System Architecture & Accelerator Physics Design Optimisation for Future Facilities based on Multi-Pass Superconducting Energy Recovery Linacs

未来的加速器项目PERLE、EIC Cooler和UK-XFELR都是基于多通道、循环连续波超导直线加速器架构。需要解决的常见加速器物理挑战是确定最佳系统配置，以便以最小的成本实现对集体效应（空间电荷、相干和非相干SR、微束）的鲁棒控制。拟议中的强大能量回收实验直线加速器（PERLE）被设想为一个三通道GeV规模的机器，将作为未来大型强子电子对撞机（LHeC）项目所需技术的测试设施。美国电子离子对撞机（EIC）是美国长期核物理计划的重点项目。对撞机的物理情况依赖于达到高亮度，要求离子束在多个阶段冷却。提供这种能量的机器被称为EIC高能电子冷却器。UK- xfelr是指英国x射线自由电子激光设备的能量回收线性实现，目前正处于四年的研发阶段。

The proposed future accelerator projects PERLE, EIC Cooler and UK-XFELR are all based on a multi-pass, recirculating CW superconducting linac architecture. The common accelerator physics challenge to be addressed is to determine optimum system configurations such that robust control of collective effects (space charge, coherent and incoherent SR, microbunching) can be achieved with minimal cost.The proposed Powerful Energy Recovery Linac for Experiments (PERLE) is envisaged to be a three-pass GeV scale machine will act as a test facility for the technology needed for a future Large Hadron Electron Collider (LHeC) project.The US Electron-Ion Collider (EIC) is the priority project in the US long term nuclear physics plan. The physics case for the collider relies on reaching high luminosities requiring the ion beam be cooled in multiple stages. The machine to deliver this is referred to as the EIC High Energy Electron Cooler.UK-XFELR refers to an Energy Recovery Linac realisation of the proposed UK X-ray Free Electron Laser facility which is currently in a four year R&D phase.