17–22 May 2026
C.I.D
Europe/Zurich timezone

First acceleration of positive muons: from initial demonstration to high-energy development

MOI4M02
18 May 2026, 11:40
30m
Auditorium Michel d’Ornano (C.I.D)

Auditorium Michel d’Ornano

C.I.D

Invited Oral Presentation MC4.A09: Hadron accelerators: Muon Accelerators, Neutrino Factories, Muon Colliders MC0 : opening session

Speaker

Masashi Otani (High Energy Accelerator Research Organization, Japan Proton Accelerator Research Complex)

Description

The realization of low-emittance muon beams through cooling and acceleration is a pivotal technology with significant potential to advance various scientific disciplines, ranging from fundamental particle physics to applied material science. Recently, we successfully demonstrated, for the first time, the acceleration of positive muons generated by resonant multi-photon ionization of muonium using a radio-frequency quadrupole linac (RFQ), accelerating them from thermal energy to 100 keV. To further advance these studies, a dedicated muon linac, composed of four types of RF cavities, has been developed to accelerate muons to 212 MeV, approaching the speed of light. The beamline and accelerator are being constructed from the upstream, and the acceleration up to the second RF accelerator is already planned, with further acceleration up to a few MeV scheduled from 2026 fiscal years. This presentation shows the results of the first acceleration of positive muons and ongoing developments aimed at achieving higher energies.

Footnotes

Masashi Otani
"First muon acceleration and muon linear accelerator for measuring the muon anomalous magnetic moment and electric dipole moment"
Progress of Theoretical and Experimental Physics, Volume 2022, Issue 5, May 2022, 052C01, https://doi.org/10.1093/ptep/ptac067

Paper status Overdue (needs changes): Resubmitted proceeding files received and assigned to an editor. Needs the author to make changes.

Author

Masashi Otani (High Energy Accelerator Research Organization, Japan Proton Accelerator Research Complex)

Co-authors

A Koda (High Energy Accelerator Research Organization) A Olin (TRIUMF) Ayaka Kondo (Nagoya University) H Hara (Okayama University) Hayato Sato (Ibaraki University) Hiromi Iinuma (Ibaraki University) J Nakamura (High Energy Accelerator Research Organization) K Hayasaka (Niigata University) K Inami (Nagoya University) K Kojima (High Energy Accelerator Research Organization) Katsuhiko Ishida (High Energy Accelerator Research Organization) Kenta Futatsukawa (High Energy Accelerator Research Organization) Koichiro Shimomura (High Energy Accelerator Research Organization) M Kuzuba (Ibaraki University) Masato Kimura (The University of Tokyo) Naohito Saito (High Energy Accelerator Research Organization) Naritoshi Kawamura (High Energy Accelerator Research Organization) Ryota Matsushita (The University of Tokyo) S Aritome (The University of Tokyo) S Kamal (University of British Columbia) S Koji (Nagoya University) S Oyama (Kyushu University) Shinji Ogawa (High Energy Accelerator Research Organization) Shusei Kamioka (High Energy Accelerator Research Organization) T Ichikawa (Nagoya University) T Sato (The University of Tokyo) Toru Iijima (Nagoya University) Tsutomu Mibe (High Energy Accelerator Research Organization) Y Ikedo (High Energy Accelerator Research Organization) Y Imai (Okayama University) Y Miyamoto (Okayama University) Y Okazaki (High Energy Accelerator Research Organization) Y Sato (Niigata University) Yasuhiro Kondo (Japan Atomic Energy Agency) Yuga Nakazawa (High Energy Accelerator Research Organization) Yuka Ibaraki (Nagoya University)

Presentation materials