高能激光能量计溯源问题研究  

Calibration of high energy laser calorimeter

作　　者：魏继锋[1] 张凯[1] 周山[1] 关有光[1] 

机构地区：[1]中国工程物理研究院应用电子学研究所,四川绵阳621900

出　　处：《强激光与粒子束》2008年第11期1832-1836,共5页High Power Laser and Particle Beams

基　　金：国家高技术发展计划项目

摘　　要：由于高能激光能量计标定过程中没有标准的能量测量装置和标准的激光源,无法采用常规方法对其进行标校。提出了一种利用现有小能量计从低到高逐级多次传递不确定度的方法,以及一种利用能量等效原理对激光能量计进行标校的方法。不确定度传递法方法简单,但环节较多导致不确定度较大。等效标定法包括电标法和光标法,电标法对设计要求较高,但求解过程相对简单。光标法工程实现难度要低得多,但必须事先对灯组余热及热损失进行测算。等效法的三个条件与误差大小关系紧密,在结构设计中必须严格考虑,它是提高测量准确性的根本,其次要尽量减少不确定度传递的中间环节,最后需要对误差项进行科学分析和测定,在此基础上对这些项进行相应的修正和补偿。Since there＇s no standard high energy laser（HEL） calorimeter or standard laser beam, conventional methods can＇t be used to calibrate HEL calorimeter. A method using existing small calorimeter for calibration with uncertainty transfer in measurements was introduced, and a way utilizing energy equivalence theory to calibrate HEL calorimeter was suggested. Uncertainty transfer method is convenient, but it has many courses, which result in great uncertainty of the HEL calorimeter. Equivalence method includes electricity-calibration and light-calibration. Electricity-calibration requires preciser design but easier data processing. Light-calibration needs no specific design, but the remainder caloric of lamps and the caloric loss must be measured before calibration. The three conditions of equivalence method have close relationship with the error, which is the key to decrease uncertainty in measurement; courses of uncertainty transfer method must be reduced as many as possible; and error items must be analyzed so as to correct or compensate both methods.

关 键 词：高能激光 能量计 标定 传递 等效方法 测量不确定度 

分 类 号：O348[理学—固体力学]