NIRS-930におけるビームのシミュレーション

Beam simulation with SNOP code has been performed for the cyclotron NIRS-930 at NIRS in order to study beam dynamics in a cyclotron. Each electric or magnetic field (main coil, trim coils, harmonic coils, magnetic channel, gradient corrector, grazer lens, Dee gap, Inflector) were calculated by OPERA-3d, and simulated injection, acceleration, and extraction. The simulation of proton with 30 MeV extracting energy with harmonic 1 was already performed and well simulated RF phase and extraction efficiency. Now we are trying to apply SNOP to 18 MeV protons with harmonic 2