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Muon D1 Muon Apparatus for Materials and Life Science Experiments

Summary

Muon irradiation experiments for Materials and Life Science using positive or negative muon (μ+ or μ-) as a sensitive probe in the atomic scale.

Research ObjectivesMuon spin rotation/relaxation (μSR) measurements for electronic property of materials and/or electronic state of hydrogen introduced to the material.
FeaturesμSR apparatus with an energy-variable positive muon beam.
A wide variety of sample enviroments including extremely low temperature and/or high pressure are availavle.

Specification

Last Update: 2016-10-25

BeamlineD1
Beam characteristicsPositive muon with momentum 27-50MeV/c (Negative muon is under commissioning.)
150kW proton beam with single pulse delivery.
Beam intensity (@150kW proton beam)Count rate of ~90 M events/hour for 20 × 20mm sample
~30 M events/hour, after shaping the beam with slits to improve the signal to noise ratio (S/N).
Detector and magnetic fieldGeneral purpose μSR spectrometer: (640ch detectors)
LC coil inner boa 250mm dia. gap 130mm
Longitudinal magnetic field: 0.4T
Transverse magnetic field: 12mT
Zero magnetic field

Mini-Cryostat (conduction-type) 4-500K
Dilution Refrigerator(top-loading) 50mK
Infrared furnace 800 C
Vertical Cryostat (exchange gas-type) 2.2-300K

Pulse-synchronized flash-lamp 100W

Beamline Team

ContactYasuhiro MIYAKE (Institute of Materials Structure Science/J-PARC Center, KEK)
Secondary contactWataru HIGEMOTO (Advanced Science Research Center/J-PARC Center, JAEA)
Koichiro SHIMOMURA (Institute of Materials Structure Science/J-PARC Center, KEK)
Yutaka IKEDO (Institute of Materials Structure Science/J-PARC Center, KEK)
Akihiro KODA (Institute of Materials Structure Science/J-PARC Center, KEK)
Kenji KOJIMA (Institute of Materials Structure Science/J-PARC Center, KEK)
Ryosuke KADONO (Institute of Materials Structure Science/J-PARC Center, KEK)
Patrick STRASSER (Institute of Materials Structure Science/J-PARC Center, KEK)
Takashi ITO (Advanced Science Research Center/J-PARC Center, JAEA)
Shunsuke MAKIMURA (Institute of Materials Structure Science/J-PARC Center, KEK)
Jumpei NAKAMURA (Institute of Materials Structure Science/J-PARC Center, KEK)
Hiroshi FUJIMORI (Institute of Materials Structure Science/J-PARC Center, KEK)
Soshi TAKESHITA (Institute of Materials Structure Science/J-PARC Center, KEK)
Motonobu TAMPO (Institute of Materials Structure Science/J-PARC Center, KEK)
Shiro MATOBA (Institute of Materials Structure Science/J-PARC Center, KEK)
Amba Datt PANT (Institute of Materials Structure Science/J-PARC Center, KEK)
Taihei ADACHI (Institute of Materials Structure Science/J-PARC Center, KEK)
Hirotaka OKABE (Institute of Materials Structure Science/J-PARC Center, KEK)
Masatoshi HIRAISHI (Institute of Materials Structure Science/J-PARC Center, KEK)

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