First muon acceleration using a radio-frequency accelerator

Muons have been accelerated by using a radio-frequency accelerator for the first time. Negative muonium atoms (Mu−), which are bound states of positive muons (μ+) and two electrons, are generated fromμ+’s through the electron capture process in an aluminum degrader. The generatedMu−’s are initially...

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Published inPhysical review. Accelerators and beams Vol. 21; no. 5; p. 050101
Main Authors Bae, S., Choi, H., Choi, S., Fukao, Y., Futatsukawa, K., Hasegawa, K., Iijima, T., Iinuma, H., Ishida, K., Kawamura, N., Kim, B., Kitamura, R., Ko, H. S., Kondo, Y., Li, S., Mibe, T., Miyake, Y., Morishita, T., Nakazawa, Y., Otani, M., Razuvaev, G. P., Saito, N., Shimomura, K., Sue, Y., Won, E., Yamazaki, T.
Format Journal Article
LanguageEnglish
Published College Park American Physical Society 18.05.2018
Subjects
Aluminum
Beta decay
Electron capture
Linear accelerators
Muonium
Muons
Particle physics
Quadrupoles
Radio frequency
Time measurement
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Summary:Muons have been accelerated by using a radio-frequency accelerator for the first time. Negative muonium atoms (Mu−), which are bound states of positive muons (μ+) and two electrons, are generated fromμ+’s through the electron capture process in an aluminum degrader. The generatedMu−’s are initially electrostatically accelerated and injected into a radio-frequency quadrupole linac (RFQ). In the RFQ, theMu−’s are accelerated to 89 keV. The acceleratedMu−’s are identified by momentum measurement and time of flight. This compact muon linac opens the door to various muon accelerator applications including particle physics measurements and the construction of a transmission muon microscope.
ISSN:2469-9888
2469-9888
DOI:10.1103/PhysRevAccelBeams.21.050101