Design and performance of a novel low energy multispecies beamline for an antihydrogen experiment
Design and performance of a novel low energy multispecies beamline for an antihydrogen experiment
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DOI：
10.1103/physrevaccelbeams.26.040101
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发表时间：
2023-04-21
影响因子：
1.7
通讯作者：
Wurtele, J. S.
中科院分区：
文献类型：
--
作者：
Baker, C. J.;Bertsche, W.;Wurtele, J. S.
位于欧洲核子研究中心反质子减速器的阿尔法合作组织最近实施了一种新的束线，用于具有强轴向磁场的圆柱形潘宁阱之间的低能（小于或接近100 eV）正电子和反质子传输。在这里，我们描述了如何结合半解析和数值计算来优化这个光束线的布局和设计。使用仪器的初始调试过程中采取的实验测量，我们评估其性能和验证用于其开发的模型。通过结合来自一系列来源的数据，我们表明束线具有高的传输效率，并估计在实验中从每个束中捕获的粒子的百分比为（78 +/- 3）%，最多105个反质子和（71 +/- 5）%，最多107个正电子的束。
The ALPHA Collaboration, based at the CERN Antiproton Decelerator, has recently implemented a novel beamline for low energy (less than or similar to 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 was used to optimize 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 +/- 3)% for up to 105 antiprotons and (71 +/- 5)% for bunches of up to 107 positrons.