CAS-LIBB微束计算机控制系统运行与改进

作为辐射生物学发展的前沿，微束已经成为当今世界上用来研究低剂量辐射生物效
应的一个强有力手段。单离子微束装置是一种将离子束斑的直径限制在微米量级范围内，并能将预定数目的离子精确注入到细胞中某一指定位置的辐射装置。结合一套自行开发的控制程序，CAS-LIBB 微束装置的计算机控制系统可以实施对生物样品的精确定量和定点辐射。本文首先给出了装置定量和定点辐射的精度测定结果，该精度完全能够胜任细胞-亚细胞尺度的精确辐射。接下来详细探讨了控制系统的改进工作，最后对控制系统进行了展望。
关键词：微束；离子；控制系统；实验精度；技术改进
Abstract: In recent years, there are increasing interests in the use of single-particle microbeams, which can deliver precisely counted single particles with a spatial resolution of a few microns or less, for radiobiological research. With a self-developed computer control program, the computer control system of the CAS-LIBB microbeam can target samples for irradiation with precisely counted single particles and a spatial resolution of a few microns or less. The single-particle detecting efficiency and targeting accuracy are firstly offered. The measurement results have a sufficient resolution for cellular and sub-cellular irradiation. Then the improving of the computer control system is discussed. At last, the prospect of the system is presented.
Keywords: microbeam, particle, control system, experiment precision, technology improving