Chin. Phys. Lett.  2021, Vol. 38 Issue (5): 052801    DOI: 10.1088/0256-307X/38/5/052801
NUCLEAR PHYSICS |
Development of a $^3$He Gas Filling Station at the China Spallation Neutron Source
Zecong Qin1,2†, Chuyi Huang1,2†, Z. N. Buck1,2†, W. Kreuzpaintner1,2, S. M. Amir1,2, A. Salman1,2, Fan Ye1,2, Junpei Zhang1,2, Chenyang Jiang3, Tianhao Wang1,2*, and Xin Tong1,2*
1Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China
2Spallation Neutron Source Science Center, Dongguan 523803, China
3Oak Ridge National Laboratory, Oak Ridge, TN 37930, USA
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Zecong Qin, Chuyi Huang, Z. N. Buck et al  2021 Chin. Phys. Lett. 38 052801
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Abstract 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 $^3$He-based neutron spin filter (NSF) cells. The gas-filling station is capable of routinely filling $^3$He 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 $^3$He 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.
Received: 10 March 2021      Published: 02 May 2021
Fund: Supported by the National Key Research and Development Program of China (Grant No. 2020YFA0406000), the Scientific Instrument Development Project of the Chinese Academy of Sciences [Grant No. 284(2018)], and the National Natural Science Foundation of China (Grant No. 11875265).
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https://cpl.iphy.ac.cn/10.1088/0256-307X/38/5/052801       OR      https://cpl.iphy.ac.cn/Y2021/V38/I5/052801
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Zecong Qin
Chuyi Huang
Z. N. Buck
W. Kreuzpaintner
S. M. Amir
A. Salman
Fan Ye
Junpei Zhang
Chenyang Jiang
Tianhao Wang
and Xin Tong
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