Radics B, Nagata Y, Yamazaki Y, Ishikawa S, Kuroda N, Matsuda Y, Anfreville M, Aune S, Boyer M, Chateau F, Combet M, Granelli R, Legou P, Mandjavidze I, Procureur S, Riallot M, Vallage B, Vandenbroucke M
Atomic Physics Laboratory, RIKEN, Saitama 351-0198, Japan.
Institute of Physics, Graduate School of Arts and Sciences, University of Tokyo, Tokyo 153-8902, Japan.
Rev Sci Instrum. 2015 Aug;86(8):083304. doi: 10.1063/1.4927685.
The ASACUSA Micromegas Tracker (AMT; ASACUSA: Atomic Spectroscopy and Collisions Using Slow Antiprotons) was designed to be able to reconstruct antiproton-nucleon annihilation vertices in three dimensions. The goal of this device is to study antihydrogen formation processes in the ASACUSA cusp trap, which was designed to synthesise a spin-polarised antihydrogen beam for precise tests of Charge, Parity, and Time (CPT) symmetry invariance. This paper discusses the structure and technical details of an AMT detector built into such an environment, its data acquisition system and the first performance with cosmic rays.
ASACUSA微Megas探测器（AMT；ASACUSA：使用慢反质子的原子光谱与碰撞）旨在能够在三维空间中重建反质子-核子湮灭顶点。该装置的目标是研究ASACUSA尖点阱中的反氢形成过程，该尖点阱旨在合成用于精确测试电荷、宇称和时间（CPT）对称性不变性的自旋极化反氢束。本文讨论了置于这种环境中的AMT探测器的结构和技术细节、其数据采集系统以及首次利用宇宙射线进行的性能测试。
