Fabrication of wide angle polarized 3He cells in China Spallation Neutron Source (CSNS).

IF 1.7 4区工程技术 Q3 INSTRUMENTS & INSTRUMENTATION

Review of Scientific Instruments Pub Date : 2025-08-01 DOI:10.1063/5.0284199

Jian Tang, Yuan Yao, Zecong Qin, Junsong Xie, Long Tian, Qingbo Zheng, Yujie Zheng, Han Gao, Xu Qin, Matthew Musgrave, Bao Yuan, Biao Tan, Junpei Zhang, Tianhao Wang, Xin Tong

引用次数: 0

Abstract

As part of ongoing upgrade efforts in the China Spallation Neutron Source (CSNS), the neutron polarization team has been actively working on the fabrication procedure of 3He-based neutron spin filters having large angle coverage. We report substantial success in blowing and filling the first wide-angle 3He glass cells in China. The contained 3He gas is polarized on our off-situ spin-exchange optical pumping system. The polarization signals of 3He are measured via the free induction decay and the electron paramagnetic resonance techniques. The best measured lifetime and polarization are 236.3 ± 2.5 h and 65%, respectively.

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散裂中子源（CSNS）中广角极化3He电池的制备。

作为中国散裂中子源（CSNS）持续升级工作的一部分，中子偏振团队一直在积极研究具有大角度覆盖的3he基中子自旋滤波器的制造工艺。我们报告了在吹制和填充中国第一个广角3He玻璃电池方面取得的重大成功。所含的3He气体在我们的非原位自旋交换光泵浦系统上被极化。利用自由感应衰减和电子顺磁共振技术测量了3He的极化信号。最佳测量寿命和偏振度分别为236.3±2.5 h和65%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Review of Scientific Instruments 工程技术-物理：应用

CiteScore

3.00

自引率

12.50%

发文量

758

审稿时长

2.6 months

期刊介绍： Review of Scientific Instruments, is committed to the publication of advances in scientific instruments, apparatuses, and techniques. RSI seeks to meet the needs of engineers and scientists in physics, chemistry, and the life sciences.