title: Characterizations of BC501A and BC537 liquid scintillator detectors.
abstract: Two 2″×2″ liquid scintillator detectors BC537 and BC501A have been characterized for their responses and efficiencies to γ-ray detection. Light output resolution and response functions were derived by least-squares minimization of a simulated response function, fitted to experimental data. The γ-ray response matrix and detection efficiency were simulated with Monte Carlo (MC) methods and validated. For photon energies below 2.4 MeVee, the resolution, as well as the efficiency, of BC501A is better than BC537 scintillator. The situation is reversed when the energy is higher than 2.4 MeVee. BC537 has higher γ-ray detection efficiency than BC501A if the impinging photon energy is more than 2 MeV due to different ratios of C to H/D atoms.
authors.affiliation: Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China; Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, PO Box 213, Mianyang 621900, China; Graduate School, China Academy of Engineering Physics, Mianyang 621900, China. Electronic address: stingg@126.com.
authors.forename: Jianguo
authors.initials: J
authors.lastname: Qin
authors.affiliation: Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, PO Box 213, Mianyang 621900, China.
authors.forename: Caifeng
authors.initials: C
authors.lastname: Lai
authors.affiliation: Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China.
authors.forename: Bangjiao
authors.initials: B
authors.lastname: Ye
authors.affiliation: Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, PO Box 213, Mianyang 621900, China.
authors.forename: Rong
authors.initials: R
authors.lastname: Liu
authors.affiliation: Institute of Applied Physics and Computational Mathematics, PO Box 8009, Beijing 100088, China.
authors.forename: Xinwei
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, PO Box 213, Mianyang 621900, China.
authors.forename: Li
authors.initials: L
authors.lastname: Jiang
keywords: Detection efficiency; Energy resolution function; Light output function; Liquid scintillator detector; γ-Ray response matrix