Radiation and Ionization Energy Loss Simulation for GDH Sum Rule   Experiment in Hall-A at Jefferson Lab
  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 $^{12}C$ elastic scattering simulation. The relative momentum ratio $\frac{\Delta p}{p}$ and $^{12}C$ 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 $^{12}C$ elastic scattering. This simulation work will give good support for radiation correction analysis of the GDH sum rule experiment. 
Xin-Hu Yan, Yun-Xiu Ye Jian-Ping Chen, Hai-Jiang LV, Pengjia Zhu,   Fengjian Jiang
physics.ins-det nucl-ex