发表机构
Facultad de Ciencias Físico Matemáticas, Benemérita Universidad Autónoma de Puebla; Cinvestav Unidad Tamaulipas; SECIHTI–Facultad de Ciencias Físico Matemáticas, Benemérita Universidad Autónoma de Puebla（普埃布拉自治大学物理数学科学学院; 墨西哥国家研究中心塔毛利帕斯分部; 普埃布拉自治大学科研与高等技术研究秘书处-物理数学科学学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究通过Geant4模拟验证了由六个BC404塑料闪烁体组成的X射线束监测探测器，其时间分辨率达100.8皮秒，仅扰动约10%入射束流，可用于束流表征与散射辐射研究。
AI 中文摘要
束流监测探测器在实验控制和放射防护中发挥着重要作用，它能够实时表征粒子和光子束流。它们提供束流强度、位置和散射信息，有助于确保测量精度、保护敏感探测器，并量化周围环境中的杂散辐射。在本工作中，开发了一个Geant4模拟来研究一种X射线束监测探测器（BMD）的性能，该探测器由六个六边形BC404塑料闪烁体组成，排列方式旨在提供高粒度，并使用反射率具有实际值93%的反射器。在本研究考虑的模拟条件下，该探测器表现出100.8 ± 2.0皮秒的固有时间分辨率。结果表明，仅有约10%的入射光子与探测器相互作用，这表明所提出的设计可用于束流表征，同时最小程度地扰动主束流。此外，X射线多重性随距离按照反平方关系递减。使用水模体进行的背散射研究表明，约6%的入射束流被检测为散射辐射。这些结果表明，所提出的探测器可能成为X射线束流表征以及散射辐射和放射防护相关研究的有用工具。需要进一步的实验验证来确认这些发现。
英文摘要
Beam monitoring detectors play an important role in experimental control and radiological protection by enabling the real-time characterization of particle and photon beams. They provide information on beam intensity, position, and scattering, helping to ensure measurement accuracy, protect sensitive detectors, and quantify stray radiation in the surrounding environment. In this work, a Geant4 simulation was developed to investigate the performance of an X-ray beam monitoring detector (BMD) composed of six hexagonal BC404 plastic scintillators arranged to provide high granularity, using a reflector with a realistic reflectivity of 93\%. Under the simulation conditions considered in this study, the detector exhibited an intrinsic time resolution of 100.8 $\pm$ 2.0~ps. The results indicated that only about 10\% of the incident photons interacted with the detector, suggesting that the proposed design could be used for beam characterization while minimally perturbing the primary beam. In addition, the X-ray multiplicity decreased with distance according to an inverse-square dependence. A backscatter study performed using a water phantom showed that approximately 6\% of the incident beam was detected as scattered radiation. These results suggest that the proposed detector may be a useful tool for X-ray beam characterization and for studies related to scatter radiation and radiological protection. Further experimental validation is required to confirm these findings.
