Antihydrogen annihilation reconstruction with the ALPHA silicon detector
Antihydrogen annihilation reconstruction with the ALPHA silicon detector
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DOI：
10.1016/j.nima.2012.04.082
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发表时间：
2012-08-21
影响因子：
1.4
通讯作者：
Yamazaki, Y.
中科院分区：
文献类型：
--
作者：
Andresen, G. B.;Ashkezari, M. D.;Yamazaki, Y.
阿尔法实验成功地捕获了反氢，这是反氢与氢的光谱比较道路上的一个重要里程碑。确定反质子湮灭的时间和位置的湮灭顶点探测器是这一成就的核心。该探测器是一个双面硅微带探测器模块阵列，排列在三个同心圆柱层中，对反质子湮灭产生的带电粒子的通过敏感。本文介绍了重建湮没位置和区分湮没信号与宇宙线背景的方法。最近的实验结果，使用该检测器的概述。(C)出版社：Elsevier B.V.
The ALPHA experiment has succeeded in trapping antihydrogen, a major milestone on the road to spectroscopic comparisons of antihydrogen with hydrogen. An annihilation vertex detector, which determines the time and position of antiproton annihilations, has been central to this achievement. This detector, an array of double-sided silicon microstrip detector modules arranged in three concentric cylindrical tiers, is sensitive to the passage of charged particles resulting from antiproton annihilation. This article describes the method used to reconstruct the annihilation location and to distinguish the annihilation signal from the cosmic ray background. Recent experimental results using this detector are outlined. (C) 2012 Published by Elsevier B.V.