Hao, Zi-Rui; Liu, Long-Xiang; Zhang, Yue; Wang, Hong-Wei; Fan, Gong-Tao; Xu, Hang-Hua; Jin, Sheng; Yang, Yu-Xuan; Li, Zhi-Cai; Jiao, Pu; Chen, Kai-Jie; Sun, Qian-Kun; Wang, Zhen-Wei; Zhou, Meng-Die; Ye, Shan; Xu, Meng-Ke; Wang, Xiang-Fei; Shen, Yu-Long

NUCLEAR SCIENCE AND TECHNIQUES

2025, 10,

Hao, Zi-Rui; Liu, Long-Xiang; Zhang, Yue; Wang, Hong-Wei; Fan, Gong-Tao; Xu, Hang-Hua; Jin, Sheng; Yang, Yu-Xuan; Li, Zhi-Cai; Jiao, Pu; Chen, Kai-Jie; Sun, Qian-Kun; Wang, Zhen-Wei; Zhou, Meng-Die; Ye, Shan; Xu, Meng-Ke; Wang, Xiang-Fei; Shen, Yu-Long

Photonuclear data are increasingly used in fundamental nuclear research and technological applications. These data are generated using advanced gamma\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\gamma$$\end{document}-ray sources. The Shanghai laser electron gamma source (SLEGS) is a new laser Compton scattering gamma\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\gamma$$\end{document}-ray source at the Shanghai Synchrotron Radiation Facility. It delivers energy-tunable, quasi-monoenergetic gamma beams for high-precision photonuclear measurements. This paper presents the flat-efficiency detector (FED) array at SLEGS and its application in photoneutron cross-section measurements. Systematic uncertainties of the FED array were determined to be 3.02% through calibration with a 252\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$<^>{252}$$\end{document}Cf neutron source. Using 197\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$<^>{197}$$\end{document}Au and 159\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$<^>{159}$$\end{document}Tb as representative nuclei, we demonstrate the format and processing methodology for raw photoneutron data. The results validate SLEGS' capability for high-precision photoneutron measurements.