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中文摘要：
设计并给出了用于同步辐射光束线波长标定和分辨本领测量的小型气体电离室。研究了厚度约为1μm的聚烯膜窗和厚度为0．1μm的Si3N4膜窗的真空隔离性能和透光性能，给出了实验数据。实验结果显示：两种膜窗均能承受100Pa的压力，聚丙烯窗在5nm波长的透过率约为80％，Si3N4窗在7nm波长的透过率为15％。此外，给出了用该电离室调试表面物理和磁性圆二色两条光束线的气体谱线。结果表明，该可移动小型气体电离室的性能达到了设计和使用要求。
英文摘要：
A portable ionization chamber mainly used to calibrate the wavelengths and investigate the resolutions power of beam lines was designed and developed in this paper, the vacuum and optical properties of 1 μm thick C3 H6 and 0.1 μm thick Si3 N4 windows were researched, the experiment data show that transmission rate of C3H6 is about 80% at 5 nm and Si3N4 filter is 15% at 7 nm, both of them can support 100 Pa pressure. The curves measured in physical surface beamline and MCD beamline were also given. It concludes that the performance of this portable ionization chamber meets the design demand of user.
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