31st International Seminar on Interaction of Neutrons with Nuclei: Fundamental Interactions & Neutrons, Nuclear Structure, Ultracold Neutrons, Related Topics (ISINN-31)

Setting Up High-Energy Polarized Neutron at the China Spallation Neutron Source

30 May 2025, 11:40

20m

Exhibition Hall (1st floor)

Plenary session Plenary Session

Speaker

Tianhao Wang (CSNS)

Description

Polarized neutrons serve as a critical probe in nuclear physics to investigate spin-dependent interactions and nuclear dynamics. Polarized neutron enables precise studies of nuclear forces, include probing nuclear structure, analyzing reaction mechanisms and resolving nucleon internal spin-quark distributions via deep inelastic scattering. Challenges persist in achieving high polarization stability, measuring low cross-section reactions, advancing our understanding of spin-mediated nuclear phenomena and QCD in dense matter.
We present our recent effort on setting polarized neutron at the China Spallation Neutron Source Back-n beamline, as well as the polarization technique available for future research. Key instrument development in polarized 3He neutron spin filter, guide fields and spin flippers shall be presented, and the corresponding method for designing experiment will be discussed.

Acknowledgment
Present study was supported by the Guangdong Provincial Key Laboratory of Extreme Conditions (2023B1212010002), and the Government-to-Government International Science and Technology Innovation Cooperation Programs (2024YFE0110000)