论文标题
在准线性Wakefield加速器中注射公差和自我匹配
Injection tolerances and self-matching in a quasilinear wakefield accelerator
论文作者
论文摘要
准等离子体唤醒中的粒子加速度可访问高加速度梯度，同时避免自诱捕背景电子。但是，对外部注入的证人束的血浆反应会导致沿束长度的集中磁场的变化，这可能导致发射的增长。为了研究这种散发体增长对整体束质量的影响，我们基于在CERN的清醒实验的潜在高能应用来开发单个功绩。我们表明，这种优点的发展自然会产生对初始证人束参数的可调性和稳定性的约束。进一步表明，当注入点的证人束半径上，准线性唤醒的独特物理会引起广泛的公差，因为等离子体韦克菲尔德自匹配了证人。
Particle acceleration in a quasilinear plasma wake provides access to high acceleration gradients while avoiding self-trapping of the background electrons. However, the plasma response to the externally injected witness bunch leads to a variation of the focussing fields along the bunch length, which can lead to a emittance growth. In order to investigate the impact of this emittance growth on the overall beam quality, we develop a single figure of merit based on a potential high-energy application for the AWAKE experiment at CERN. We show that the development of such a figure of merit naturally gives rise to constraints on both the tunability and stability of the initial witness bunch parameters. It is further shown that the unique physics of the quasilinear wake gives rise to broad tolerances for the witness bunch radius at the injection point, as the plasma wakefields self-match to the witness bunch.
