The CSNS Polarized Neutron Development Report at PNCMI 2021

The Polarized Neutrons for Condensed Matter Investigations (PNCMI) 2021 meeting was held online between July 27 th and July 30 th and was hosted by the NIST Center for Neutron Research. The virtual conference covered the latest condensed matter research using polarized neutrons as well as the development of stateof-the-art polarized neutron instrumentation across the world. The China Spallation Neutron Source (CSNS) demonstrated its rapid development in the past 2 years during the invited talk given by Dr. Xin (Tony) Tong. In his talk, Dr. Tong discussed the general status of the CSNS. With four beamlines commissioned, eight under construction, and another eight planned, the CSNS is poised to become a high-quality user neutron facility. The development of the polarized neutron program at CSNS aims to ensure state-of-the-art polarized neutron capability for its users from day one. Three major tasks have been identified to achieve this grand goal: develop polarization devices in parallel with beamline construction, tailor the polarized neutron technique to the pulsed-