configuration files

• style.h: configuring drawing style
• functions.h: containing functions for global usage

making data

1. make_pid.C -> pid histogram
2. proton_fit.C -> fit data (function parameter c1, c2)
3. calculate_mass.C -> mass data tree

Modified Bethe-Bloch Formula

by Leo. Techniques for Nuclear and Particle Physics Experiments

with

where Z(′) and M(′) are charge and weight of the transporting-particle(absorbing-material), and me is electron mass. The fitting parameters C1 and C2 are shared by all particle species.