摘要
The well-de ned carbon ion beam Bragg peak is the main advantage for using a carbon ion beam for precise particle therapy.However,this advantage cannot be fully exploited due to uncertainty in the particle distribution range.To solve this problem,we build a secondary particle intensity(SPI)monitor system,which is completed a CeBr3 detector array,an integral ionisation chamber(IC),and a data acquisition(DAQ)system,as shown in Fig.1(a).
