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串列升级工程的剂量监测系统选择空气电离室作为探测器,监测加速器供束时因束流损失在厅内产生的伽玛射线。空气电离室具有结构简单、造价低、性能可靠、易维护等特点,因此国内外众多加速器实验室仍将空气电离室作为重要的束损监测手段。因为空气电离室工作在大气压下,工作气压低,输出电流信号十分微弱,在10-17～10-15A范
The dose monitoring system of the tandem upgrading project selects the air ionization chamber as the detector to monitor the gamma ray generated by the beam loss in the hall during accelerator beaming. Air ionization chamber has the characteristics of simple structure, low cost, reliable performance and easy maintenance. Therefore, many ionization chambers at home and abroad still regard air ionization chamber as an important means of beam damage monitoring. Because the air ionization chamber work at atmospheric pressure, low working pressure, the output current signal is very weak, 10-17 ~ 10-15A range