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穿透电离室用于在线监测探伤加速器输出剂量率、累计剂量,并为剂量保护提供监测和控制信号。电离室的存在不影响加速器的输出特性。该电离室的线性、工作的长期稳定性是加速器调试和运行的关键之一。电离室采用大口径双重密封结构,制作工艺难度大,要求高。电离室透射性能好,薄窗直径φ80mm,厚0.05mm,薄窗及电极总厚度对1～4MeVX射线强度吸收小于1％。电离室的灵敏度高,当加速器中心轴线上距靶一米处的剂量率为
Penetration chambers are used to monitor the output dose rate of flaw detection accelerators online, accumulate doses, and provide monitoring and control signals for dose protection. The presence of an ionization chamber does not affect the output characteristics of the accelerator. The linearity of the ionization chamber, the long-term stability of the work, is one of the keys to the commissioning and operation of the accelerator. Ionization chamber with large caliber double seal structure, the production process is difficult, demanding. Ionization chamber transmission performance, thin window diameter φ80mm, thickness 0.05mm, thin window and the total thickness of the electrode 1 ~ 4MeVX ray intensity absorption less than 1%. The sensitivity of the ionization chamber is high, with a dose rate of one meter from the target on the central axis of the accelerator