Development of a 3He Gas Filling Station at the China Spallation Neutron Source

• 作者: Zecong Qin Chuyi Huang Z.N.Buck W.Kreuzpaintner S.M.Amir A.Salman Fan Ye Junpei Zhang Chenyang Jiang Tianhao Wang Xin Tong
• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: NUCLEAR PHYSICS
• 页码范围: 16-20
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/0256-307X/38/5/052801

摘要

At the China Spallation Neutron Source (CSNS),we have developed a custom gas-filling station,a glassblowing workshop,and a spin-exchange optical pumping (SEOP) system for producing high-quality 3He-based neutron spin filter (NSF) cells.The gas-filling station is capable of routinely filling 3He cells made from GE180 glass of various dimensions,to be used as neutron polarizers and analyzers on beamlines at the CSNS.Performance tests on cells fabricated at our gas-filling station are conducted via neutron transmission and nuclear-magnetic-resonance measurements,revealing nominal filling pressures,and a saturated 3He polarization in the region of 80％,with a lifetime of approximately 240 hours.These results demonstrate our ability to produce competitive NSF cells to meet the ever-increasing research needs of the polarized neutron research community.