Karamyshev, O. High Power Center Region with Internal Ion Source JACoW Publishing Geneva, Switzerland 2673-5482 978-3-95450-212-7 10.18429/JACoW-CYCLOTRONS2022-WEPO004 English 211-213 cyclotron ion-source acceleration simulation focusing Contribution to a conference proceedings 2023 2023-10 https://doi.org/10.18429/JACoW-CYCLOTRONS2022-WEPO004 https://jacow.org/cyclotrons2022/papers/wepo004.pdf Cyclotrons for medical isotope production require high beam current. Author propose the design of central region with internal ion source at 6.6 kV potential placed in the center of cyclotoron and delivering the beam to every RF cavity symmetrically.