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首页> 外文期刊>Radiation Protection and Environment >Development of prototype fiber optics dosimeter for remote radiation level measurements
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Development of prototype fiber optics dosimeter for remote radiation level measurements

机译：开发用于远程辐射水平测量的原型光纤剂量计

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摘要

Measurement of radiation levels in difficult-to-access and hazardous areas, such as hot cells, high active source storage areas, require refined and sensitive remote radiation level measurement techniques. Optical fiber dosimetry has been studied as an emerging method of monitoring radiation remotely and is suitable for use in confined environments that may be inaccessible using existing conventional electronic dosimeters or radiation survey meters. Being light weight and nonintrusive, optical fibers based dosimeters provide several advantages in the field of remote radiation dosimetry and in-vivo medical applications. A prototype fiber optic dosimetry system with extrinsic architecture is designed and developed using optically stimulated luminescence (OSL) technique at Radiological safety division, Indira Gandhi Centre for Atomic Research. The fiber optic dosimetry system uses OSL material like BaFBr: Eu to detect radiation and a bifurcated optical cable to illuminate the sensor with the suitable light source and also to guide the light from the sensor to the detector. Indigenously developed hardware is used for pulse processing and application software of the system is developed in Microsoft Visual Basic.Net. This paper depicts the characterization of the dosimetric material, development of hardware and software for the system and calibration of the system using standard source. The system uses Advantech APAX 5570 base controller with suitable modular add-on cards for data acquisition and controlling. Indigenously developed electronics is used for processing the pulses from the sensor attached to the tip of the bifurcated optical cable. The acquisition of the counts from the electronic circuit and illumination and bleaching time for the sensor pellet is controlled by application software developed in VB.Net. The system is calibrated by irradiating the pellet with different absorbed doses. The system explores the possibility of remote radiation monitoring using OSL technique in real time. The system is portable, simple to use and requires less user intervention to operate.
机译：在难以接近和危险的区域（例如，热室，高活性源存储区）中测量辐射水平，需要完善且灵敏的远程辐射水平测量技术。光纤剂量测定法已被研究为一种远程监控辐射的新兴方法，适用于使用现有的常规电子剂量计或辐射测量仪无法进入的狭窄环境。基于光纤的剂量计重量轻且非侵入式，在远程辐射剂量测定和体内医疗应用领域提供了多个优势。利用Indira Gandhi原子研究中心放射安全部门的光激发发光（OSL）技术设计和开发了具有外部结构的原型光纤剂量测定系统。光纤剂量测定系统使用OSL材料（例如BaFBr：Eu）来检测辐射，并使用分叉的光缆用合适的光源照亮传感器，并将光从传感器引导到检测器。本地开发的硬件用于脉冲处理，Microsoft Visual Basic.Net开发了系统的应用软件。本文描述了剂量学材料的表征，系统硬件和软件的开发以及使用标准源进行的系统校准。该系统使用研华APAX 5570基本控制器和合适的模块化附加卡进行数据采集和控制。本地开发的电子设备用于处理来自连接到分叉光缆末端的传感器的脉冲。 VB.Net开发的应用软件控制着从电子电路中获取计数以及传感器颗粒的照明和漂白时间。通过用不同的吸收剂量照射沉淀物来校准系统。该系统探索了使用OSL技术实时监视远程辐射的可能性。该系统是便携式的，易于使用的并且需要较少的用户干预来操作。

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  • 来源
    《Radiation Protection and Environment》 |2013年第3期|133-137|共5页
  • 作者

    Asha Jayaprakash; D. N. Krishnakumar; A. Dhanasekaran; M. T. Jose; B. Venkatraman; S. A. V. Satya Murty;

  • 作者单位

    Radiological Safety Division, Electronics, Instrumentation and Radiological Safety Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamilnadu, India;

    Radiological Safety Division, Electronics, Instrumentation and Radiological Safety Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamilnadu, India,RSS/RSD, IGCAR, Kalpakkam, Tamil Nadu, India;

    Radiological Safety Division, Electronics, Instrumentation and Radiological Safety Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamilnadu, India;

    Radiological Safety Division, Electronics, Instrumentation and Radiological Safety Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamilnadu, India;

    Radiological Safety Division, Electronics, Instrumentation and Radiological Safety Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamilnadu, India;

    Radiological Safety Division, Electronics, Instrumentation and Radiological Safety Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamilnadu, India;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Radiation dosimetry; optically stimulated luminescence measurements; remote radiation level measurements;

    机译：辐射剂量法;光激发发光测量;远程辐射水平测量;

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