Detector for positronium temperature measurements by two-photon angular correlation.
Detector for positronium temperature measurements by two-photon angular correlation.
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通过双光子角相关测量正电子温度的探测器。
DOI：
10.1063/1.5017724
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Allen P. Mills
中科院分区：
文献类型：
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作者：
G. G. Cecchini;A. Jones;M. Fuentes;D. J. Adams;M. Austin;E. Membreno;Allen P. Mills
我们报道了一种模块化γ射线探测器组件的设计和表征，该组件用于准确有效地检测电子-正电子湮灭后的511 keV背对背γ射线。每个模块探测器由16个窄的氧化硅酸镥钇闪烁体耦合到一个多阳极滨松H12700B光电倍增管。我们讨论了511 keV γ射线探测的操作和优化，这是通过测试各种闪烁体和探测器布置得出的结论，估计了预期实验的511 keV探测效率，并进行了初步测试，代表了完成阵列的四分之一。
We report on the design and characterization of a modular γ-ray detector assembly developed for accurate and efficient detection of coincident 511 keV back-to-back γ-rays following electron-positron annihilation. Each modular detector consists of 16 narrow lutetium yttrium oxyorthosilicate scintillators coupled to a multi-anode Hamamatsu H12700B photomultiplier tube. We discuss the operation and optimization of 511 keV γ-ray detection resulting from testing various scintillators and detector arrangements concluding with an estimate of the coincident 511 keV detection efficiency for the intended experiment and a preliminary test representing one-quarter of the completed array.