论文标题
基于Caliste CDTE混合技术的第二代便携式伽马相机
Second generation of portable gamma camera based on Caliste CdTe hybrid technology
论文作者
论文摘要
在国家资助的核安全计划的框架内，构建和测试了便携式伽马相机的第一个原型。它集成了专为空间X射线天文学而设计的Caliste-HD CDTE Hybrid探测器，再加上新的基于芯片的采集系统（FPGA和ARM Micropropessor）和热电冷却器，以便在室温下使用。相机的完整伽马部分适合15 x 15 x 40 cm^3的体积，质量低于1 kg，功耗低于10W。在几个测试活动中，证明了在受污染的场景中对放射性核素的定位和光谱识别。考虑到来自原位测量的反馈经验，并通过称为Caliste-O的工业应用来整合新一代的传感器成本优化的新一代系统。 Caliste-O保持16 x 16像素探测器的14 x 14 mm^2和2毫米厚的厚度为2毫米，并具有8个全端端EDEF-X HD ASIC。制造并测试了两个原型。该论文将使用第一台伽马摄像头，Caliste-O的光谱性能以及第二代伽马摄像机的设计介绍原位测量结果，旨在实时成像和光谱识别。
In the framework of a national funded program for nuclear safety, a first prototype of portable gamma camera was built and tested. It integrates a Caliste-HD CdTe-hybrid detector designed for space X-ray astronomy coupled with a new system-on-chip based acquisition system (FPGA and ARM microprocessor) and thermo-electrical coolers for a use at room temperature. The complete gamma part of the camera fits in a volume of 15 x 15 x 40 cm^3 for a mass lower than 1 kg and a power consumption lower than 10 W. Localization and spectro-identification of radionuclides in a contaminated scene were demonstrated during several test campaigns. A new generation of system is under development taking into account feedback experience from in-situ measurements and integrating a new generation of sensor cost-optimized by industrial applications called Caliste-O. Caliste-O holds a 16 x 16 pixel detector of 14 x 14 mm^2 and 2 mm thick with 8 full-custom front-end IDeF-X HD ASICs. Two prototypes were fabricated and tested. The paper will present the results of in-situ measurements with the first gamma camera, the spectroscopic performance of Caliste-O and the design of the second generation of gamma camera which aims for real time imaging and spectro-identification.
