The ASACUSA CUSP: an antihydrogen experiment

被引：0
|
作者：
N. Kuroda
S. Ulmer
D. J. Murtagh
S. Van Gorp
Y. Nagata
M. Diermaier
S. Federmann
M. Leali
C. Malbrunot
V. Mascagna
O. Massiczek
K. Michishio
T. Mizutani
A. Mohri
H. Nagahama
M. Ohtsuka
B. Radics
S. Sakurai
C. Sauerzopf
K. Suzuki
M. Tajima
H. A. Torii
L. Venturelli
B. Wünschek
J. Zmeskal
N. Zurlo
H. Higaki
Y. Kanai
E. Lodi Rizzini
Y. Nagashima
Y. Matsuda
E. Widmann
Y. Yamazaki
机构：
[1] University of Tokyo,Graduate School of Arts and Sciences
[2] RIKEN,Ulmer Initiative Research Unit
[3] RIKEN,Atomic Physics Laboratory
[4] Boltzmangasse 3,Stefan Meyer Institut für Subatomare Physik
[5] CERN,Dipartimento di Chimica e Fisica per l’Ingegneria e per i Materiali
[6] Università di Brescia & Instituto Nazionale di Fisica Nucleare,Department of Physics
[7] Tokyo University of Science,Graduate School of Human and Environmental Sciences
[8] Kyoto University,Graduate School of Advanced Science of Matter
[9] Hiroshima University,Department of Applied Physics
[10] Tokyo University of Agriculture and Technology,undefined
来源：
Hyperfine Interactions | 2015年 / 235卷
关键词：
Antihydrogen; CPT invariance; Atomic beam; Rydberg atom;
D O I：
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中图分类号：
学科分类号：
摘要：
In order to test CPT symmetry between antihydrogen and its counterpart hydrogen, the ASACUSA collaboration plans to perform high precision microwave spectroscopy of ground-state hyperfine splitting of antihydrogen atom in-flight. We have developed an apparatus (“cusp trap”) which consists of a superconducting anti-Helmholtz coil and multiple ring electrodes. For the preparation of slow antiprotons and positrons, Penning-Malmberg type traps were utilized. The spectrometer line was positioned downstream of the cusp trap. At the end of the beamline, an antihydrogen beam detector was located, which comprises an inorganic Bismuth Germanium Oxide (BGO) single-crystal scintillator housed in a vacuum duct and surrounding plastic scintillators. A significant fraction of antihydrogen atoms flowing out the cusp trap were detected.
引用
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页码：13 / 20
页数：7
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