2026-10-14T13:04:21Z https://www.scidb.cn/oai

10.57760/sciencedb.j00186.00330 2024-09-12T08:42:06Z

2024-09-12 A dataset of the Large-scale Modular BGO Detection Array (LAMBDA) design and test doi:10.57760/sciencedb.j00186.00330 en Total Absorption Gamma-ray Spectroscopy (TAGS) provides a powerful tool for measuring complex γ transitions and has been effectively applied in the study of reactor decay heat. This paper presents the design of a new TAGS detector, named Large-scale Modular BGO Detection Array (LAMBDA), tailored for measuring β decay intensity distributions of fission products. The modular design allows the LAMBDA detector to be assembled in various configurations. The final version of LAMBDA consists of 102 identical 60 mm×60 mm×120 mm BGO crystals, exhibiting a high full-energy peak efficiency exceeding 80% at 0.5~8 MeV based on Monte Carlo simulation. Currently, about half of the LAMBDA modules have been manufactured. Tests using γ-ray sources and nuclear reactions demonstrate favorable energy resolution, energy linearity, and efficiency uniformity across the modules. Forty-eight modules have been integrated into the prototype LAMBDA-I. The capability of LAMBDA-I in β-delayed γ decay experiments was evaluated through a commissioning measurement with the 152Eu source. Total Absorption Gamma Spectroscopy; Reactor decay heat; Beta decay; BGO detector array; LAMBDA Sheng Yao-De Lu-Yang Song Jun Su Shi-Lun Jin Fei Lu Yang-Ping Shen Jun-Feng Chen Li-Yong Zhang Jian-Jun He Xin-Yue Li Hong-Na Liu Feng-Shou Zhang Meng-Lin Qiu Shen Lin Hao Zhang Luo-Huan Wang Zi-Ming Li Yin-Ji Chen Xin-Zhi Jiang Xin Chen Zhi-Lin Shen Feng-Cheng Liu Zhi-Wei Qin Lin Wang Yi-Tong Huang Xiang Li Si-Ze Chen You-Bao Wang Zhi-Hong Li Bing Guo Wei-Ping Liu PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset http://www.doi.org/10.1007/s41365-024-01574-3 Science Data Bank