The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - De Villiers, J.G. AU - Broodryk, J.I. AU - Conradie, J.L. AU - Nemulodi, F. AU - Thomae, R.W. AU - Yang, J.J. AU - Zhang, T.J. ED - Chrin, Jan ED - Schaa, Volker RW TI - Numerical Orbit Tracking in 3D Through the Injector Cyclotron for Heavy Ions at iThemba LABS J2 - Proc. of Cyclotrons2016, Zurich, Switzerland, September 11-16, 2016 C1 - Zurich, Switzerland T2 - International Conference on Cyclotrons and Their Applications T3 - 21 LA - english AB - The RF and magnetic fields of the injector cyclotron (SPC2) were modelled in 3D with finite element methods, using OPERA-3d, in an effort to determine the cause of the relative poor beam transmission through the machine in the 8-turn mode. Simulation of the particle motion in SPC2 was done using machine operational parameters for acceleration of 20Ne³⁺. The isochronous magnetic field is calculated from a complete cyclotron magnet model and the electrostatic field distribution from a dee electrode model, using TOSCA. The modelling of the high frequency resonance conditions of the resonators with SOPRANO-EV provided the relative variation of the electric field profiles in the acceleration gaps. A command line program was developed to combine the information of the three models and implement time-dependent control of the electrostatic fields during the particle tracking. In addition, based on calculated data from OPERA-3D, the parallel particle-in-cell code OPAL-CYCL was used to calculate a particle orbit for comparison with OPERA-3d. The models, methods and calculated results will be presented. PB - JACoW CP - Geneva, Switzerland SP - 71 EP - 74 KW - cyclotron KW - acceleration KW - extraction KW - injection KW - emittance DA - 2017/01 PY - 2017 SN - 978-3-95450-167-0 DO - 10.18429/JACoW-Cyclotrons2016-MOP10 UR - http://jacow.org/cyclotrons2016/papers/mop10.pdf ER -