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EPR/PTFE Dosimetry for Test Reactor Environments

机译：用于测试反应器环境的EPR / PTFE剂量测定

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In 1992 the Radiation Metrology Laboratory (RML) at Sandia National Laboratories implemented EPR/Alanine capabilities for use in routine and calibration activities at its Co-60 and pulsed-power facilities. At that time it also investigated the usefulness of the system for measurement of absorbed dose in the mixed neutron/photon environments of reactors such as the Sandia Pulsed Reactor and the Annular Core Research Reactor used for hardness testing of electronics. The RML concluded that the neutron response of alanine was a sufficiently high fraction of the overall dosimeter response that the resulting uncertainties in the photon dose would be unac-ceptably large for silicon-device testing. However, it also suggested that non-hydrogenous materials such as polytetrafluoroethylene (PTFE) would exhibit smaller neutron response and might be useful in mixed environments. Preliminary research with PTFE in photon environments indicated considerable promise, but further development was not pursued at that time. Because of renewed interest in absorbed dose measurements that could better define the individual contributions of photon and neutron components to the overall dose delivered to a test object, the RML has re-initiated the development of an EPR/PTFE dosimetry system. This paper presents a summary of the research, a description of the EPR/PTFE dosimetry system, and recommendations for preparation and fielding of the dosimetry in photon and mixed neutron/photon environments.
机译：1992年，桑迪亚国家实验室的辐射计量实验室（RML）实施了EPR /丙氨酸功能，用于其Co-60和脉冲电源设施的例行和校准活动。当时，它还研究了该系统在反应堆中子/光子混合环境（例如用于电子学硬度测试的桑迪亚脉冲堆和环形堆芯研究堆）中测量吸收剂量的有用性。 RML得出结论，丙氨酸的中子响应是总剂量计响应的足够高的部分，以致于光子剂量的不确定性对于硅器件测试来说是无法接受的。但是，这也表明非氢材料，例如聚四氟乙烯（PTFE），将表现出较小的中子响应，并且可能在混合环境中有用。 PTFE在光子环境中的初步研究显示出可观的前景，但当时尚未进行进一步的开发。由于人们对吸收剂量测量产生了新的兴趣，吸收剂量测量可以更好地定义光子和中子成分对输送至测试对象的总剂量的贡献，因此RML重新启动了EPR / PTFE剂量测定系统的开发。本文介绍了这项研究的摘要，EPR / PTFE剂量学系统的描述，以及在光子和中子/光子混合环境中剂量学的制备和现场应用的建议。

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