Speaker
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
