Popov, D. Karamyshev, O. Lyapin, I.D. Malinin, V. Shirkov, S.G. JACoW Publishing Geneva, Switzerland 2673-5482 978-3-95450-212-7 10.18429/JACoW-CYCLOTRONS2022-THAO02 English 260-263 extraction cyclotron simulation proton radiation Contribution to a conference proceedings 2023 2023-10 https://doi.org/10.18429/JACoW-CYCLOTRONS2022-THAO02 https://jacow.org/cyclotrons2022/papers/thao02.pdf MSC230 is a novate cyclotron for proton (FLASH included) therapy research, designed and developed by JINR. The extraction system of this machine includes only one electrostatic deflector followed by two magnetic correctors. These correctors were designed and included in global model to simulate beam extraction. The peculiarities of the design procedure and the outcome of the simulation discussed in this paper.