Gas detectors,with their high multiplication ability and resolution,are expected to play a key role in carbon ion measurement.The type and ratio of working gases are crucial factors affecting the detector's sensitivity and accuracy.This study used Geant4 simulations to investigate the stopping power,range,and energy deposition rate of carbon ions in various working gases,exploring the interaction mechanisms between the gases and carbon ions.The results show that the stopping power of mixed gases lies between pure inert gases and quenching gases,changing with the gas ratio.The range of carbon ions varies in three mixed gases,with Ar-CF4 mixtures showing a higher energy deposition rate over most depth ranges.Overall,a gas mixture ratio of Ar-CO2/CH4/CF4(60-40)offers better conditions for carbon ion energy deposition.At the same gas ratio,the energy deposition rate decreases and then increases with rising carbon ion energy.This study highlights the significant impact of different working gases and their ratios on carbon ion detection performance and provides crucial theoretical guidance for gas selection in carbon ion measurement applications.
维普
万方数据