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Celebrating 30 years of RIKEN-RAL

02 Sep 2020

The RIKEN-RAL Muon Facility is celebrating 30 years since the first agreement was signed with RIKEN to construct and operate the facility.

Image of the ISIS team signing the agreement in 1990
Day 1

​The RIKEN-RAL Muon Facility is one of ISIS’ largest and longest-standing international science collaborations. The facility, based in ISIS TS1, was owned and operated by RIKEN, Japan, for fundamental and applied studies using muons for many years. In 2018, ownership and operations passed to ISIS, and ISIS and RIKEN are collaborating on a significant refurbishment of the facility as well as Japanese and UK users continuing partnerships in research​.

The first agreement for the facility was signed in September ​1990. The facility produced first muons in 1994, and was then officially inaugurated in April 1995. Since then it has produced over 500 papers, had researchers from over 90 Japanese institutions come to use it, and stimulated collaborations with a further 40 institutions around the world including agreements between RIKEN and universities in Indonesia, Malaysia and Korea.​

Throughout the 30 days on September 2020 we daily released daily one video message of congratulations and one highlight reflecting the 30 years of collaboration.​

Image of the ISIS team signing the agreement in 1990
construction begins in japan
construction progresses
muon beam was observed in port 2
inauguration ceremony of the RIKEN-RAL
the facility was commissioned
muon catalysed fusion: alpha sticking
external review and a possibility of 1/8 effect discovered
muon catalysed fusion muon transfer
muon catalysed fusion is dependent on the ortho-para effect
the 1st muon catalyst fusion symposium
electronic phase diagram indicates the competitive relationship between superconducting and magnetically ordered phases
ultra slow muon beam first used in port 3
Investigation of bilayer manganate using HSR
2006 evidence for magnetic ordering associated with metal-insulator transition in SMRU4P12
Demonstration of tapered capillary method of muon beam density enhancement
Lithium-ion diffusion in LixCo02 was investigated by muon spin relaxation
Possible Coexistence of Static Magnetism and Superconductivity in SmFeAs01-xFX
Celebration of 20 years of collaboration was held at RAL
Using uSR to research the magnetic and non-magnetic phases of a quantum spin liquid
A new project for the measurement of muon g-2 was started by a collaboration between KEK, RIKEN and multiple universities.
Muon irradiation on electronics: First chip irradiation measurement in Port-4
Using the laser excitation technique, the basic reaction rate of muonium and hydrogen was measured. The electron spin polarization in GaAs by laser pumping was detected using pSR.
Using X-rays from muonic atoms, we can probe elemental composition of valuable objects without destruction
To improve our understanding on proton structure, proton measurement can be carried out with muonic hydrogen
Muon spin relaxation alongside other techniques demonstrates that small changes in lattice symmetry in oxygen ion dumbbell orientation causes different magnetic properties in alkali-metal superoxides.
Demonstration of ferromagnetic fluctuations in heavily overdoped (Bi, Pb), Sr, Cu06+5 copper oxides