Radiation and Ionization Energy Loss Simulation for GDH Sum Rule Experiment in Hall-A at Jefferson Lab

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The radiation and ionization energy loss are presented for single arm Monte Carlo simulation for the GDH sum rule experiment in Hall-A at Jefferson Lab. Radiation and ionization energy loss are discussed for ¹²C elastic scattering simulation. The relative momentum ratio Δp/p and ¹²C elastic cross section are compared without and with Radiation Energy Loss and a reasonable shape is obtained by the simulation. The total energy loss distribution is obtained, showing a Landau shape for ¹²C elastic scattering. This simulation work will give good support for radiation correction analysis of the GDH sum rule experiment.