Simulation of beam optics for 12C＋12C scattering of RCNP by using Monte Carlo method

The Monte Carlo method is used to simulate the beam optics of the WS beam line of RCNP, Osaka University in order to know the effect of collimators on the beam line to control the beam spot. According to the simulation, we do not need to use the collimator to cut the beam and the beam angular resolution can be better than 0.05 degrees in achromatic mode. In the present paper, the actual beam condition during the beam adjustment is listed. The accelerator can provide a C-12 beam in achromatic mode and the angular resolution sigma=0.7775 mrad +/- 0.0030 mrad.