Direct detection of antihydrogen atoms using a BGO crystal

被引：11
|
作者：
Nagata, Y. [1 ,3 ]
Kuroda, N. [2 ,3 ]
Ohtsuka, M. [2 ]
Leali, M. [4 ,5 ]
Lodi-Rizziui, E. [4 ,5 ]
Maseagna, V. [4 ,5 ]
Tajima, M. [2 ,3 ]
Torii, H. A. [2 ,3 ]
Zurlo, N. [4 ,5 ]
Matsuda, Y. [2 ,3 ]
Venturelli, L. [4 ,5 ]
Yamazaki, Y. [3 ]
机构：
[1] Tokyo Univ Agr & Technol, Dept Appl Phys, 2-24-16 Naka Cho, Koganei, Tokyo 1848588, Japan
[2] Univ Tokyo, Inst Phys, Meguro Ku, 3-8-1 Komaba, Tokyo 1538902, Japan
[3] RIKEN, Atom Phys Res Unit, 2-1 Hirosawa, Wako, Saitama 3510198, Japan
[4] Univ Brescia, Dipartimento Ingn Informaz, I-25133 Brescia, Italy
[5] Ist Nazl Fis Nucl, Grp Collegato Brescia, I-25133 Brescia, Italy
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2016年 / 840卷
关键词：
Antihydrogen; Antimatter; Detector; Inorganic scintillator; Cosmic ray background suppression;
D O I：
10.1016/j.nima.2016.10.019
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The ASACUSA collaboration has developed a detector consisting of a large size BOO crystal to detect an atomic antihydrogen beam, and performed the direct detection of antihydrogen atoms, Energy spectra from antihydrogen annihilation on the BOO crystal are discussed in cornparison to simulation results from the GEANT4 toolkit. Background mainly originating from cosmic rays were strongly suppressed by analyzing the energy deposited in the BGO and requiring a multiplicity of charged pions. Thus antihydrogen events were identified.
引用
收藏
页码：153 / 159
页数：7
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