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首頁> 外文期刊>Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment >Development of a modular mixed-radiation directional rotating scatter mask detection system
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Development of a modular mixed-radiation directional rotating scatter mask detection system

機(jī)譯:開發(fā)模塊化混合輻射定向旋轉(zhuǎn)散射掩模檢測系統(tǒng)

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摘要

The ability to simultaneously identify the direction of both fast neutrons, above 1 MeV, and gamma rays using a light-weight system consisting of a single 1" EJ-309 organic liquid scintillator and a plastic Spartan rotating scatter mask (RSM) is demonstrated computationally through Monte Carlo simulations and validated with experimental measurements. Two sets of directional measurements were performed with an americium-beryllium source, emitting both neutrons and gamma rays. The RSM identified the direction of the source within one 10° rotational increment in the azimuthal and polar directions based on both the neutron and gamma-ray induced signals discriminated by charge integration pulse-shape discrimination. These results indicate the RSM system is a compact, light-weight, and modular directional detection system useful for rapid identification of the type and direction of radioactive sources, a desirable feature for many nuclear security and safety applications.
機(jī)譯:使用由單個1“EJ-309有機(jī)液體粉末和塑料旋轉(zhuǎn)散射掩模(RSM)組成的輕質(zhì)系統(tǒng)同時識別快速中子,高于1MeV和伽馬射線的快速中子,高于1MeV和伽馬射線的能力通過Monte Carlo模擬并用實驗測量驗證。用amerium-beryllium源進(jìn)行兩組定向測量,發(fā)出中子和伽馬射線。RSM在方位角和極性的一個10°旋轉(zhuǎn)增量內(nèi)識別出源的方向。基于中子和伽馬射線誘導(dǎo)的信號通過電荷積分脈沖形狀辨別區(qū)別的信號。這些結(jié)果表明RSM系統(tǒng)是一種緊湊,輕質(zhì)和模塊化方向檢測系統(tǒng),可用于快速識別類型和方向放射源是許多核安全和安全應(yīng)用的理想特征。

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