Developing a remote gamma-ray spectra collection system (RGSCS) by coupling a high purity Germanium (HPGe) detector with a cosmicguard background reduction device

IF 2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC HardwareX Pub Date : 2024-02-02 DOI:10.1016/j.ohx.2024.e00513

Zaijing Sun, Krishnakumar Divakar Nangeelil, Haven Searcy

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Abstract

Despite being widely used for high-resolution spectral analysis and quantifying low activity in natural samples, the operations and data analysis of High Purity Germanium (HPGe) gamma-ray detectors are seldom fully automated due to the excessive costs associated with commercially available automatic sample changing systems. This paper introduces the design and implementation of a cost-effective, customized remote gamma-ray spectra collection system centered around the HPGe detector coupled to a cosmic-ray veto background reduction device. The HPGe detector system, equipped with a Lynx DSA, is seamlessly integrated with an economically viable automatic sample changer. This sample vial changer is controlled by a high-torque NEMA 34 stepper servo motor from Vention. Web control of the rotary actuator is facilitated through a CAD-based programming tool. The remote-controlled sample pick-and-place procedure is executed using a robotic arm (Trossen Robotics, Viper X 250). The DYNAMIXEL servomotors of the robotic arm are programmed using Python software supported by the Robotic Operating System. Beyond its technical construction, this system is uniquely fashioned for academic research, providing invaluable hands-on experience in gamma spectrometry to both junior researchers and students.

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通过将高纯锗（HPGe）探测器与宇宙卫士背景消减装置相结合，开发远程伽马射线光谱收集系统（RGSCS）

尽管高纯锗（HPGe）伽马射线探测器被广泛用于高分辨率光谱分析和天然样品中低活度的定量分析，但由于市场上自动样品更换系统的成本过高，其操作和数据分析很少实现完全自动化。本文介绍了一种经济高效的定制远程伽马射线光谱收集系统的设计和实施情况，该系统以高纯锗（HPGe）探测器为中心，与宇宙射线否决背景消减装置相结合。配备了 Lynx DSA 的 HPGe 探测器系统与经济上可行的自动样品更换器无缝集成。样品瓶更换器由 Vention 公司生产的高扭矩 NEMA 34 步进伺服电机控制。旋转执行器的网络控制通过基于 CAD 的编程工具实现。遥控样品拾放程序由机器人手臂（Trossen Robotics，Viper X 250）执行。机械臂上的 Dynamixel 伺服电机使用由机器人操作系统支持的 Python 软件进行编程。除了技术结构之外，这套系统还为学术研究提供了独特的设计，为初级研究人员和学生提供了宝贵的伽马能谱分析实践经验。

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来源期刊

HardwareX Engineering-Industrial and Manufacturing Engineering

CiteScore

4.10

自引率

18.20%

发文量

124

审稿时长

24 weeks

期刊介绍： HardwareX is an open access journal established to promote free and open source designing, building and customizing of scientific infrastructure (hardware). HardwareX aims to recognize researchers for the time and effort in developing scientific infrastructure while providing end-users with sufficient information to replicate and validate the advances presented. HardwareX is open to input from all scientific, technological and medical disciplines. Scientific infrastructure will be interpreted in the broadest sense. Including hardware modifications to existing infrastructure, sensors and tools that perform measurements and other functions outside of the traditional lab setting (such as wearables, air/water quality sensors, and low cost alternatives to existing tools), and the creation of wholly new tools for either standard or novel laboratory tasks. Authors are encouraged to submit hardware developments that address all aspects of science, not only the final measurement, for example, enhancements in sample preparation and handling, user safety, and quality control. The use of distributed digital manufacturing strategies (e.g. 3-D printing) is encouraged. All designs must be submitted under an open hardware license.