Design and application of the Muon Source Project at CSNS

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Posts from 1 июля 2025

yubao@ihep.ac.cn | Last updated on 01.07.2025

Section: (M) Fundamentals of high temperature superconductivity (mechanisms, pairing symmetry, etc);

Report type: Invited

Authors: Yu Bao, Chen Wu, You Lv, Qiang Li, Yang Li, Cong Chen, Haiyan Du, Meichan Feng, Yan Feng, Xiaoyin Mo, Nikos Vassilopoulos, Lei Liu, Guangyuan Wang, Junsong Zhang, Yongji Yu, Huayan He, Jiaxin Chen, Jiebing Yu, Changdong Deng, Junhao Wei, Yuwen Wu, Wenqin Zhang, Yuntao Liu, Pengcheng Wang, Gang Zhang, Yinglin Ma, Sixuan Zhuang, Huihong Liang, Ning He, Yu Liu, Ao Cao, Congju Yao, Zhiduo Li, Yuanguang Xia, Jun Xu, Yuliang Zhang, Yongcheng He, Xin Qi, Wen Yin, Ziwen Pan, Tianyi Yang, Hao Liang, Bangjiao Ye, Sheng Wang

Affiliations: Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China, Spallation Neutron Science Center, Dongguan 523803, China, State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China, University of Science and Technology of China, Hefei 230026, China

Short Abstract (up to 700 symbols): brief outline of the main idea of the work: A Muon station for sciEnce, technoLOgy and inDustrY (MELODY) project has started construction in the beginning of 2024 at China Spallation Neutron Source (CSNS). A stand-alone target station is designed to produce pions and muons.Three muon beamlines are designed for various applications, including a surface muon beam, a dedicated negative muon beam and one decay muon beamline. A muSR spectrometer is designed with 3024 detectors. In this report, we introduce the application of muons in condensed matter and superconducting materials, and describe the design and progress of MELODY.

Публикация ожидает утверждения!

Muon beams have been used in various applications including particle physics [1] and material research [2].The muon spin rotation/relaxation/resonance (μSR) techniques use the high sensitivity of polarized muon spins to magnetic fields to study the microscopic magnetic structure and dynamics of condensed matter. In China, we have designed a Muon station for sciEnce, technoLOgy and inDustrY (MELODY) based on China Spallation Neutron Source (CSNS). The project will be constructed during the Phase II upgrade of CSNS. As a start-up project, we will build one surface muon beamline with one μSR spectrometer and leave the decay muon beamline and more terminals for the future. Here we briefly introduce the CSNS facility and report the progress of the design and technique development of MELODY.

[1] Kuno Y and Okada Y 2001 Rev. Mod. Phys. 73 151–202 (Preprint hep-ph/9909265)
[2] Hillier A D, Blundell S J, McKenzie I, Umegaki I, Shu L, Wright J A, Prokscha T, Bert F, Shimomura K, Berlie A, Alberto H and Watanabe I 2022 Nature Reviews Methods Primers 2 4