Speaker
Description
The High Intensity Heavy-ion Accelerator Facility (HIAF) in Huizhou is a domestically developed, large-scale scientific facility that delivers the world's most intense ion beams. The Hyperon-Nucleon Spectrometer (H-NS) at HIAF is designed to address fundamental questions about hadron spin structure through high-precision measurements of Lambda hyperon and proton polarization. By utilizing HIAF's proton and heavy-ion beams at energies ranging from 3 to 9 GeV, with potential for future upgrades to 20 GeV, the experiment will investigate the production mechanisms, energy dependence, and medium effects of hyperon polarization in proton–proton (pp), proton–nucleus (pA), and nucleus–nucleus (AA) collisions. H-NS incorporates several state-of-the-art technologies, including high-resolution silicon pixel detectors, AC-LGAD fast-timing detectors, and a carbon-foil baryon polarimeter, to achieve accurate vertex reconstruction, particle identification, and polarization measurements of hyperons and nucleons. This project will not only validate theoretical models of quark spin transfer to hyperons but also develop and validate critical technologies for next-generation facilities, such as the Electron-Ion Collider in China (EicC). Overall, H-NS serves as a vital experimental platform that bridges the disciplines of nuclear and particle physics. In this talk, I will present the physics program, detector design, and current status of the H-NS project.