论文标题
新型低能多物种光束线的设计和性能
Design and Performance of a Novel Low Energy Multi-Species Beamline for the ALPHA Antihydrogen Experiment
论文作者
论文摘要
总部位于CERN Antiproton减速器的Alpha协作最近实施了一种新型的低能量（$ \ lyssim $ 100 eV）正电子的光束线和圆柱笔陷阱之间具有强轴向磁场的圆柱笔陷阱之间。在这里，我们描述了如何使用半分析和数值计算的组合来优化该梁线的布局和设计。使用在仪器初始调试期间进行的实验测量，我们评估其性能并验证用于开发的模型。通过将来自一系列来源的数据结合在一起，我们表明该光束线具有较高的传输效率，并估计每束实验中捕获的颗粒的百分比为（78 $ \ pm $ 3）％，最高为$ 10^{5} $ antiprotons，（71 $ \ pm PM \ pm 5），以及（71 $ \ pm \ pm $ 5）％的$ 10^$ $ $ $ $ 10^^7} $ {71} $ posit。
The ALPHA Collaboration, based at the CERN Antiproton Decelerator, has recently implemented a novel beamline for low-energy ($\lesssim$ 100 eV) positron and antiproton transport between cylindrical Penning traps that have strong axial magnetic fields. Here, we describe how a combination of semianalytical and numerical calculations were used to optimise the layout and design of this beamline. Using experimental measurements taken during the initial commissioning of the instrument, we evaluate its performance and validate the models used for its development. By combining data from a range of sources, we show that the beamline has a high transfer efficiency, and estimate that the percentage of particles captured in the experiments from each bunch is (78 $\pm$ 3)% for up to $10^{5}$ antiprotons, and (71 $\pm$ 5)% for bunches of up to $10^{7}$ positrons.
