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200MeV直线加速器能谱分析系统用来测量直线加速器的束流能谱,为指导直线加速器的调机和了解机器状态提供实验证据.为了克服非成像系统以及分辨率不高的缺点,在NSRL二期工程中对这个系统进行了重新设计,现已安装和调试.叙述了该系统详细的物理设计以及最新的初步实验结果.“,”Energy spectrum analytic system of 200MeV linear accelerator in NSRL is used to detect the beam energy and to guild the machine adjustment. This paper shows the former status of the system, and analyses some of its shortcomings. In the NSRL project-II, the system is redesigned, and has been installed recently. This paper also describes the results of physics computation and some newest preliminary experiments.