最终用户使用SCoTSS康普顿成像仪和定向测量光谱仪的体验
End-user experience with the SCoTSS Compton imager and directional survey spectrometer
摘要：
基于硅光电倍增器的安全和安保康普顿望远镜（SCoTSS）是根据最终用户的要求开发的。最终用户群体包括在发生放射性或核事故时负责移动调查的人员、负责为重大活动和加拿大边境的安全行动提供辐射调查支持的人员，以及负责加拿大国防应用的一些人员。SCoTSS开发计划已达到8级技术准备水平，我们正在高保真操作环境中进行仪器的现场试验。预期的最终用户参与了试验的建立和执行，以确保在其任务空间的适用性。SCoTSS已经经受了试验，涉及隐藏源，高度屏蔽源，成像仪相对于源移动，和复杂的人造环境。我们的运营商重视异常地理定位和绘图的高灵敏度。终端用户还需要一种能够在运动中进行方向重建以及对视场进行快速成像的仪器。我们已经开发了一种“成像时间”测量方法，该方法允许对具有根本不同技术的成像器进行定量比较，其中一种设计可能在能量分辨率和紧凑性方面具有优势，而另一种设计可能在效率和成本效益方面具有优势。我们在这里提出的性能的SCoTSS成像仪在快速测向。此外，我们还比较了SCoTSS成像仪和H3 D Polymorph-H Quad成像仪的成像时间，其中数据是在同等条件下采集的。这种成像性能的定量测量可以允许操作员在考虑重量和尺寸以及预算限制的情况下对满足其需求的设计做出明智的选择。
英文摘要：
The Silicon photomultiplier-based Compton Telescope for Safety and Security (SCoTSS) has been developed incorporating end-user requirements into the design process. The end-user group includes those responsible for mobile survey in the event of a radiological or nuclear accident, those responsible for radiation survey support to security operations at major events and at Canadian borders, as well as some of those responsible for Canadian defense applications. The SCoTSS development program has reached a technology readiness level of eight, and we are proceeding with field trials of the instrument in high-fidelity operational environments. Prospective end users have been involved in trial set up and execution, assuring applicability in their mission spaces. SCoTSS has been subject to trials involving hidden sources, heavily shielded sources, imager moving with respect to source, and complicated man-made surroundings. Our operators value high sensitivity for anomaly geolocation and mapping. End users also require an instrument which is capable of direction reconstruction in motion, as well as rapid imaging of a field of view. We have developed a "time to image" measure which allows for quantitative comparison of imagers of fundamentally different technology, where one design may have an advantage in terms of energy resolution and compactness and another design may have an advantage in terms of efficiency and cost effectiveness. We present here the performance of the SCoTSS imager in rapid direction finding. As well, we compare the time to image quantity for the SCoTSS imager and the H3D Polaris-H Quad imager where the data were taken under equivalent conditions. This quantitative measure of imaging performance can allow operators to make an informed choice of the design that meets their needs taking into consideration also weight and size as well as budgetary constraints.
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