JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - CONF AU - Planche, T. AU - Baartman, R.A. ED - Zhang, Tianjue ED - Schaa, Volker R.W. ED - An, Shizhong ED - Kiselev, Daniela ED - Liu, Yuntao ED - Li, Pengzhan TI - Design of a 2 GeV Cyclotron with Constant Radial and Vertical Tunes J2 - Proc. of CYCLOTRONS2022, Beijing, China, 05-09 December 2022 CY - Beijing, China T2 - International Conference on Cyclotrons and their Applications T3 - 23 LA - english AB - We demonstrate that a cyclotron can be made to have precisely constant betatron tunes over wide energy ranges. In particular, we show that the horizontal tune can be made constant and does not have to follow the Lorentz factor gamma, while still perfectly satisfying the isochronous condition. To make this demonstration we developed a technique based on the calculation of the betatron tunes entirely from the geometry of realistic non-hard-edge closed orbits. The technique is applied to the particular case of a 800 MeV to 2 GeV proton cyclotron to produce a design that is presented here. PB - JACoW Publishing CP - Geneva, Switzerland SP - 356 EP - 358 KW - cyclotron KW - closed-orbit KW - betatron KW - proton KW - resonance DA - 2023/10 PY - 2023 SN - 2673-5482 SN - 978-3-95450-212-7 DO - doi:10.18429/JACoW-CYCLOTRONS2022-FRAI02 UR - https://jacow.org/cyclotrons2022/papers/frai02.pdf ER -