中国物理B ›› 2025, Vol. 34 ›› Issue (9): 90701-090701.doi: 10.1088/1674-1056/ade38a
所属专题： Featured Column — INSTRUMENTATION AND MEASUREMENT
Development of a ceramic gas-electron-multiplier neutron detector prototype with a large sensitive area
Lin Zhu(朱林)1,2, Jianrong Zhou(周健荣)1,2,3,†, Xiaojuan Zhou(周晓娟)1,2,‡, Lixin Zeng(曾莉欣)1,2, Liang Xiao(肖亮)1,2, Hong Xu(许虹)1,2, Fei Jia(贾飞)1,2, Chaoyue Zhang(张超月)1,2, Yezhao Yang(杨烨钊)4, Dingfu Li(黎定福)4, Hao Xiong(熊皓)4, Yuguang Xie(谢宇广)1,3, Yubin Zhao(赵豫斌)1,2,3, Yadong Wei(魏亚东)4, Zhijia Sun(孙志嘉)1,2,3, and Yuanbo Chen(陈元柏)1,2,3
- 1 State Key Laboratory of Particle Detection and Electronics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
2 Spallation Neutron Source Science Center, Dongguan 523803, China;
3 University of Chinese Academy of Sciences, Beijing 100049, China;
4 Institute of Science & Technology Innovation, Dongguan University of Technology (Institute of Science & Technology Innovation and Advanced Manufacturing), Dongguan 523803, China
Development of a ceramic gas-electron-multiplier neutron detector prototype with a large sensitive area
Lin Zhu(朱林)1,2, Jianrong Zhou(周健荣)1,2,3,†, Xiaojuan Zhou(周晓娟)1,2,‡, Lixin Zeng(曾莉欣)1,2, Liang Xiao(肖亮)1,2, Hong Xu(许虹)1,2, Fei Jia(贾飞)1,2, Chaoyue Zhang(张超月)1,2, Yezhao Yang(杨烨钊)4, Dingfu Li(黎定福)4, Hao Xiong(熊皓)4, Yuguang Xie(谢宇广)1,3, Yubin Zhao(赵豫斌)1,2,3, Yadong Wei(魏亚东)4, Zhijia Sun(孙志嘉)1,2,3, and Yuanbo Chen(陈元柏)1,2,3
- 1 State Key Laboratory of Particle Detection and Electronics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
2 Spallation Neutron Source Science Center, Dongguan 523803, China;
3 University of Chinese Academy of Sciences, Beijing 100049, China;
4 Institute of Science & Technology Innovation, Dongguan University of Technology (Institute of Science & Technology Innovation and Advanced Manufacturing), Dongguan 523803, China
摘要： The rapid growth of neutron flux has driven the development of $^{3}$He-free neutron detectors to satisfy the requirements of the neutron scattering instruments under construction or planned at the China Spallation Neutron Source (CSNS). Position-sensitive neutron detectors with a high counting rate and large area play an important role in the instruments performing neutron measurements in or close to the direct beam. The ceramic gas-electron-multiplier (GEM) detector serves as a promising solution, and considerable work has been done using the small-area GEM neutron detectors. In this article, we designed and constructed a detector prototype utilizing ceramic GEM foils with an effective area of about 307 mm$\times$307 mm. To evaluate and investigate their basic characteristics, the Monte Carlo (MC) tool FLUKA was employed and several neutron beam tests were conducted at CSNS. The simulated spatial resolution was basically in agreement with the measured value of 2.50$\pm$0.01 mm (FWHM). The wavelength spectra measurement was verified through comparisons with a commercial beam monitor. In addition, a detection efficiency of 4.7$\pm$0.1% was achieved for monoenergetic neutrons of 1.59 Å wavelength. This is consistent with the simulated result. The results indicate that the large-area ceramic GEM detector is a good candidate to implement neutron beam measurements. Its efficiency can be improved in a cascading manner to approach that reached by traditional $^{3}$He detectors.
中图分类号: (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)
- 07.07.Df