Abstract The objective of this study was to investigate the energy and angle dependence of the RPL dosimetry system in use at the Paul Scherrer Institute (GBFJ-01 dosimeter, FGD 660 reader, and CDEC-Easy algorithm) for the operational dose quantity H*(10) and compare the results with the requirements from the Swiss dosimetry regulation. The energy response was determined for photon energies between 12 keV (N-15) and 1250 keV (60Co) and the angle response was determined for 65 keV (N-80) and 662 keV (137Cs). The data obtained in this study show that the RPL dosimeters satisfy the requirements of the Swiss dosimetry regulation for the energy dependence, but only partially satisfy the requirements for the angle dependence. For directional irradiations around ±90° the dosimeter response can deviate by more than the 20% allowed by the Swiss dosimetry regulation. If a more realistic testing scenario for the 90° irradiation is used, which includes full rotation of the dosimeter around its reference direction, the response is within 10% of the response at 0° irradiation. Full tests according to the IEC 62387 were not performed and, therefore, performance against this standard cannot be fully evaluated from this data. Nevertheless, the data indicate that the asymmetric dosimeter design would have difficulties satisfying the IEC 62387 standard for H*(10) for low energy photons and large angle irradiation, in spite of the allowance of full rotation for the 90° irradiations.

中文翻译：

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基于掺银磷酸盐玻璃的放射光致发光的环境 H*(10) 剂量计的剂量学特性

摘要 本研究的目的是研究 Paul Scherrer 研究所使用的 RPL 剂量测定系统（GBFJ-01 剂量计、FGD 660 读取器和 CDEC-Easy 算法）对操作剂量 H*( 10) 并将结果与​​瑞士剂量测定法规的要求进行比较。能量响应是针对 12 keV (N-15) 和 1250 keV (60Co) 之间的光子能量确定的，角度响应是针对 65 keV (N-80) 和 662 keV (137Cs) 确定的。本研究中获得的数据表明，RPL 剂量计满足瑞士剂量学法规对能量依赖性的要求，但仅部分满足角度依赖性的要求。对于 ±90° 左右的定向照射，剂量计响应的偏差可能超过瑞士剂量测定法规允许的 20%。如果使用更真实的 90° 辐射测试场景，包括剂量计围绕其参考方向的完整旋转，则响应在 0° 辐射响应的 10% 以内。未执行根据 IEC 62387 的完整测试，因此无法根据此数据全面评估针对此标准的性能。尽管如此，数据表明非对称剂量计设计将难以满足 IEC 62387 标准对于低能量光子和大角度辐射的 H*(10)，尽管允许 90° 辐射完全旋转。这包括剂量计围绕其参考方向的完整旋转，响应在 0° 辐射响应的 10% 以内。未执行根据 IEC 62387 的完整测试，因此无法根据此数据全面评估针对此标准的性能。然而，数据表明非对称剂量计设计将难以满足 IEC 62387 标准对于低能量光子和大角度辐射的 H*(10)，尽管允许 90° 辐射完全旋转。这包括剂量计围绕其参考方向的完整旋转，响应在 0° 辐射响应的 10% 以内。未执行根据 IEC 62387 的完整测试，因此无法根据此数据全面评估针对此标准的性能。然而，数据表明非对称剂量计设计将难以满足 IEC 62387 标准对于低能量光子和大角度辐射的 H*(10)，尽管允许 90° 辐射完全旋转。