Hi，
Thanks for replying me so quickly.
I need to gain the Bragg Peak like the plot below.
When the proton incident into the detector,the energy will continue to decrease because of ionizing the gas, eventually deposited in the detector, forming Bragg peak.
I want to get the Bragg peak and the track curve of the proton.
Otherwise, I also can’t get plot of the electron transport properties like drift velocity, Townsend coefficient etc. I will try to figure it out