Design of the front-end electronics for parallel plate ion chamber
作者机构：BeijingChina
出 版 物：《Radiation Detection Technology and Methods》 (辐射探测技术与方法（英文）)
年 卷 期：2021年第5卷第4期
页 面：558-563页
核心收录：
学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学]
主 题：Proton therapy Ionization chamber Dose monitoring Charge measurement
摘 要：Background A set of nozzle systems for proton therapy is now being developed at China Institute of Atomic *** real-ize the measurement of beam dose,a set of charge measurement electronics is designed,which is used to measure the output charge signal of the ionization chamber integration ***,the charge measurement device can be used to measure the position information of ion chamber strips just by changing certain *** The device realizes the integration and amplification of charge by IVC102,a precise low-noise integrator,and the DSP controls the ADC to collect and process the *** communication protocol is used to realize communication with the host computer which makes it possible to read data and set the *** A fixed charge generator is designed to generate 20 pC to 2 nC charge,which is used to test the measuring accuracy of *** results have shown that the accuracy is within 0.62%in the above charge *** After experimental tests,the front-end electronics meet the design goal and play a certain pre-test and verification role in the dose and beam position monitoring in the proton therapy system.
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