title: An instrument for measuring scintillators efficiently based on silicon photomultipliers.
abstract: An instrument used for measuring multiple scintillators' light output and energy resolution was developed. The instrument consisted of a light sensor array which was composed of 64 discrete SiPMs (Silicon Photomultipliers), a corresponding individual channel readout electronics system, and a data processing algorithm. A Teflon grid and a large interval between adjacent SiPMs were employed to eliminate the optical cross talk among scintillators. The scintillators' light output was obtained by comparing with a reference sample with known light output. Given the SiPM temperature dependency and the difference among each SiPM, a temperature offset correction algorithm and a non-uniformity correction algorithm were added to the instrument. A positioning algorithm, based on nine points, was designed to evaluate the performance of a scintillator array. Tests were performed to evaluate the instrument's performance. The uniformity of 64 channels for light output measurement was better than 98%, the stability was better than 98% when temperature varied from 15 °C to 40 °C, and the nonlinearity under 511 keV was better than 2%. This instrument was capable of selecting scintillators and evaluating the packaging technology of scintillator arrays with high efficiency and accuracy.
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: M J
authors.initials: MJ
authors.lastname: Yang
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Z M
authors.initials: ZM
authors.lastname: Zhang
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Y J
authors.initials: YJ
authors.lastname: Wang
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: D W
authors.initials: DW
authors.lastname: Li
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: W
authors.initials: W
authors.lastname: Zhou
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: H H
authors.initials: HH
authors.lastname: Tang
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Y T
authors.initials: YT
authors.lastname: Liu
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: P
authors.initials: P
authors.lastname: Chai
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: L
authors.initials: L
authors.lastname: Shuai
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: X C
authors.initials: XC
authors.lastname: Huang
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: S Q
authors.initials: SQ
authors.lastname: Liu
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: M L
authors.initials: ML
authors.lastname: Zhu
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: X P
authors.initials: XP
authors.lastname: Jiang
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Y W
authors.initials: YW
authors.lastname: Zhang
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: T
authors.initials: T
authors.lastname: Li
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: B
authors.initials: B
authors.lastname: Ma
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: S F
authors.initials: SF
authors.lastname: Sun
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: L Y
authors.initials: LY
authors.lastname: Sun
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Q
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Z R
authors.initials: ZR
authors.lastname: Lu
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: T
authors.initials: T
authors.lastname: Zhang
authors.affiliation: Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: L
authors.initials: L
authors.lastname: Wei