From March 30 to April 2, the 2nd Workshop on Polarized Beam and Target - Physics and Applications was successfully held at the Huizhou Heqiao Campus of the Institute of Modern Physics (IMP), Chinese Academy of Sciences.

The workshop centered on spin-polarized physics at high-intensity ion accelerators such as HIAF. It brought together experts and scholars from domestic and international research institutions, including Shandong University, Hohai University, Beijing Normal University, the Institute of High Energy Physics, the Budker Institute of Nuclear Physics in Novosibirsk, the Landau Institute, the GSI Helmholtz Centre for Heavy Ion Physics in Germany, the Forschungszentrum Jülich, and the Brookhaven National Laboratory.

Figure 1. Group photo of the workshop attendees

The workshop reviewed the latest developments in the field of polarized beams and polarized targets, and exchanged insights on cutting-edge technologies and equipment, including polarized molecular beams, polarized atomic beams based on superconducting sextupole magnets and permanent dipole magnets, as well as spin-rotating polarized targets.

Attendees highly recognized IMP's achievements in key technologies such as polarized ion production, acceleration, spin manipulation, and beam polarimetry. In-depth discussions were held on fundamental research topics that can be explored at HIAF, including polarized electron capture, deuteron rotation induced by isospin vector forces, new boson search, and tests of the time-reversal symmetry.

The experts also discussed baryon final-state polarization measurements and application-oriented research based on low-energy polarized ions, such as double-polarized fusion. Some experts visited the HIAF and CiADS site. They expressed high appreciation for the construction progress of these two major scientific facilities, and looked forward to world-class outcomes in the near future.

Figure 2. Visit to the HIAF and CiADS construction site

At the YANG Chengzhong Forum taking place on April 3, Professor Nikolai N. Nikolaev from the Landau Institute and Professor Yannis K. Semertzidis from the Brookhaven National Laboratory delivered two academic lectures, titled "Tests of Fundamental Symmetries at Storage Rings and HIAF-EicC as a Silk Road to Т-violation" and "Precision Measurement of the Muon Anomalous Magnetic Moment: Status, Challenges, and Implications," respectively.

Figure 3. Professor Nikolai N. Nikolaev and Professor Yannis K. Semertzidis delivering academic lectures