TY - JOUR
T1 - Direct detection of antihydrogen atoms using a BGO crystal
AU - Nagata, Y.
AU - Kuroda, N.
AU - Ohtsuka, M.
AU - Leali, M.
AU - Lodi-Rizzini, E.
AU - Mascagna, V.
AU - Tajima, M.
AU - Torii, H. A.
AU - Zurlo, N.
AU - Matsuda, Y.
AU - Venturelli, L.
AU - Yamazaki, Y.
N1 - Funding Information:
We would like to express our gratitude towards the AD group of CERN. We are thankful towards operational staff of the Proton Synchrotron, CERN EN department, and the CERN RF group. We should also acknowledge ASACUSA collaboration members, and all former CUSP subgroup members for their help and fruitful discussions. This work was supported by the Grant-in-Aid for Specially Promoted Research (no. 24000008 ) of the Japanese Ministry of Education, Culture, Sports, Science and Technology (Monbukakagu-sho), Special Research Projects for Basic Science of RIKEN, Università di Brescia, and Istituto Nazionale de Fisica Nucleare.
Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/12/21
Y1 - 2016/12/21
N2 - The ASACUSA collaboration has developed a detector consisting of a large size BGO crystal to detect an atomic antihydrogen beam, and performed the direct detection of antihydrogen atoms. Energy spectra from antihydrogen annihilation on the BGO crystal are discussed in comparison 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.
AB - The ASACUSA collaboration has developed a detector consisting of a large size BGO crystal to detect an atomic antihydrogen beam, and performed the direct detection of antihydrogen atoms. Energy spectra from antihydrogen annihilation on the BGO crystal are discussed in comparison 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.
KW - Antihydrogen
KW - Antimatter
KW - Cosmic ray background suppression
KW - Detector
KW - Inorganic scintillator
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U2 - 10.1016/j.nima.2016.10.019
DO - 10.1016/j.nima.2016.10.019
M3 - Article
AN - SCOPUS:84991633829
SN - 0168-9002
VL - 840
SP - 153
EP - 159
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ER -