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针对强流质子加速器非拦截式的截面测量需求,开展了以剩余气体分子为基础的电离型截面探测器的研究工作。探索了电离信号强度的计算方法,利用CST(Computer Simulation Technology)电磁工作室对电场进行了优化设计,设计加工了一套应用于质子直线加速器的电离型截面探测器,该装置利用高压电极产生的电场引导电离产物,用微通道板放大电离信号,荧光屏和相机组成探测系统。该电离型截面探测器被安装于加速器驱动次临界系统(China Accelerator Driven Subcritical system,ADS)先导专项的注入器I上,在线束流实验证明,该套设备工作稳定正常,实现了束流截面的非拦截式测量。
In view of the requirement of non-intercepting cross-section measurement of high-flow proton accelerator, the research of ionization type cross-section detector based on remaining gas molecules has been carried out. The calculation method of ionization signal intensity was explored. The electric field was optimized by CST (Computer Simulation Technology) electromagnetic working chamber. A set of ionization cross-section detector for proton linear accelerator was designed and manufactured. The device used the high voltage electrode The electric field guides the ionization product, amplifies the ionization signal with the microchannel plate, the fluorescent screen and the camera form the detection system. The ionization cross-section detector was installed on the pilot I of Accelerator Driven Subcritical System (ADS). The beam current experiment proves that the device works stably and normally, and the beam cross-section Non-interception measurement.