[12p-D209-1~17] 2.2 Detection systems

[12p-D209-8] Development of Neutron Gas Scintillation Imager with Capillary Plate

〇Toru Moriya¹, Haruyasu Kondo², Hiroyuki Sugiyama², Fuyuki Tokanai¹, Masahiro Hino³, Takayuki Sumiyoshi⁴ (1.Yamagata Univ., 2.Hamamatsu photonics, 3.Kyoto Univ., 4.Tokyo Metropolitan Univ.)

Keywords:Neutron Gas Scintillation Imager, Capillary Plate

Neutron imaging is useful for light elements in the sample such as hydrogen, lithium, boron, carbon, and nitrogen. Owing to their unique ability to probe inside samples, neutrons have been widely utilized for neutron radiography in various fields, including fundamental science, archaeology, and industry. High position resolution with a moderate effective area is required in practical applications of neutron imaging. We have been developing a high-spatial-resolution neutron gas scintillation imager with a capillary plate gas detector (n-CPGD). The detector consists of a conversion layer containing ¹⁰B and a CP placed in a vessel. The vessel is filled with neon or argon gas mixtures. A ¹⁰B converter is directly mounted on the inlet surface of the CP. Charged particles (α-rays and ⁷Li nuclei) are generated by a nuclear reaction between incident neutrons and the ¹⁰B. The performance of the n-CPGD was investigated using the cold neutron beam line CN-3 installed to the Kyoto University. In this conference, we report the status of development of n-CPGD.