Speaker
Description
$\mu$SR in high magnetic fields is a powerful technique for probing material structures, enabling detailed measurements such as the muon Knight shift and level-crossing resonance (LCR). To advance such studies, we are developing a high-field µSR spectrometer named CYCLOPS, designed to operate in magnetic fields up to 5 tesla in the Materials and Life Science Experimental Facility (MLF) at J-PARC.
A superconducting magnet and a detector with 3,008 channels of fiber scintillator have already been fabricated, and a beam test was conducted in February 2024 with the magnet excited up to 5 tesla at the J-PARC MLF S1 area. In the beam test, the fundamental data were measured to evaluate the performance of the spectrometer compared to the simulation. Additionally, the transient $\mu$SR method [1] was applied to perform LCR measurements on two organic compound samples.
In this presentation, we will report the evaluation of CYCLOPS as well as the results of the LCR measurements.
[1] S. Nishimura et al., Nucl. Instrum. & Meth. Phys. Res. A 1056, 168669 (2023).
