A compact neutron spectrometer consisting of a 6 mm 6 mm 120 mm prism of EJ-276 plastic scintillator capable of pulse shape discrimination coupled to a single silicon photomultiplier is described. In principle this device will be capable of spectroscopic measurements exceeding 100 MeV using unfolding analyses with detector response functions measured at neutron time-of-flight facilities. A characterisation of the device is described and illustrated with measurements of the detector response made at three fast neutron facilities with energies between 5.0 MeV and 63.5 MeV. Nearly mono-energetic detector response functions were used to produce neutron energy spectra by unfolding light output distributions measured with the detector in the energy range of interest.

中文翻译：

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用于高能中子能谱测定的紧凑型闪烁体探测器

描述了一种紧凑型中子能谱仪，由 EJ-276 塑料闪烁体的 6 mm × 6 mm × 120 mm 棱镜组成，能够与单个硅光电倍增管耦合进行脉冲形状辨别。原则上，该设备将能够使用在中子飞行时间设施中测量的探测器响应函数进行展开分析，进行超过 100 MeV 的光谱测量。通过在三个能量介于 5.0 MeV 和 63.5 MeV 之间的快中子设施上进行的探测器响应测量来描述和说明该设备的特性。近乎单能的探测器响应函数用于通过展开探测器在感兴趣的能量范围内测量的光输出分布来产生中子能谱。