集装箱检测系统中射线束流中心测量方法的研究

The research of beam center measurement in container inspection system

在集装箱检测系统中,射线的实际束流中心可能与光学法测量的束流中心存在差异。试图探讨一种新的实验方法来解决测量实际的束流中心问题。在假设加速器射出的束流横截面,其强度呈高斯分布的条件下,讨论分析了一种精细测量系统束流横截面强度分布的方法,并用实验对这种方法的正确性做了验证。这种方法对监测、调试射线成像系统的性能,具有重要的意义。

The Container Inspection System, variance may exist between the operating beam center and that measured by optical method, this paper discusses a new experimental method to locate the beam center. That is supposed that the intensity of cross section of the beam ejacted by accelerator is Gauss distribution, a free measurement is operated to determine the peak of the Gauss distribution, and it is verified by experiment. The method is significant for montioring and debugging the X-ray imaging system.