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首页> 外文期刊>Nuclear Instruments & Methods in Physics Research. B, Beam Interactions with Materials and Atoms >DIAMON: A portable, real-time and direction-aware neutron spectrometer for field characterization and dosimetry
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DIAMON: A portable, real-time and direction-aware neutron spectrometer for field characterization and dosimetry

机译：DIAMON：用于现场表征和剂量测定的便携式，实时和方向感知的中子谱仪

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摘要

An innovative portable detection system based on real-time spectrometry was developed for neutron field characterization and dosimetry. This system, called DIAMON (Direction-aware Isotropic and Active neutron MONitor with spectrometric capabilities), relies on a multi-detector geometry and a built-in unfolding code to provide in real time all field and operational quantities of interest. A patent pending design provides a quasi-ideal isotropic response and an optimized spectrometric performance from thermal to high energies. Furthermore, the custom signal processing and acquisition system is conceived for deriving continuously the 3D directional distribution of incoming neutrons. This work describes the characterization of DIAMON performances carried out at the neutron calibration facility of Politecnico di Milano. Neutron spectra, field quantities and dosimetric values are reported and compared with those assessed by a reference, calibrated, Bonner Sphere System. The overall variability of the DIAMON angular response and the gamma sensitivity are presented and discussed. An example of the continuous monitoring capabilities is also shown. Results demonstrate DIAMON is an all-in-one detection system able to characterize accurately all neutron field properties in real-time.
机译：开发了一种基于实时光谱法的创新便携式检测系统，用于中子场表征和剂量测定法。该系统称为DIAMON（方向感知的各向同性和活性中子监视器，具有光谱能力），依赖于多探测器几何形状和内置展开代码，以实时提供所有现场和兴趣的操作量。专利申请设计提供了从热量到高能的准理想的各向同性反应和优化的光谱性能。此外，设想自定义信号处理和采集系统以连续导出进入中子的3D方向分布。这项工作描述了在PoliteCnico di Milano的中子校准设施下进行的DIAMON性能的表征。报告中子谱，现场量和剂量测量值，并与参考，校准，Bonner球体系统评估的那些相比。提出和讨论了DIAMON角度响应的整体变异性和伽马敏感性。还示出了连续监控能力的示例。结果表明DIAMON是一体化检测系统，能够实时地精确地表征所有中子场特性。

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