Afkhami Karaei, M. Afarideh, H. Azizpourian, S. Chai, J.-S. Ghergherehchi, M. Mousavinia, M. Solhju, R. Taft, F. JACoW Geneva, Switzerland 978-3-95450-167-0 10.18429/JACoW-Cyclotrons2016-MOP03 English 49-52 MOP03 space-charge cyclotron ion ion-source injection Contribution to a conference proceedings 2017 2017-01 http://dx.doi.org/10.18429/JACoW-Cyclotrons2016-MOP03 http://jacow.org/cyclotrons2016/papers/mop03.pdf To study of space charge effects in 10 MeV cyclotron of Amirkabir University of Technology the C++ code is developed. This cyclotron is designed to accelerate H⁻ up to 10MeV energy. The important components of cyclotron that effect on calculations of space charge include four sector magnets, 2 RF cavities with 71MHz frequency and internal PIG ion source. Equations of motion and effects of charged particles in electromagnetic field of accelerator are integrated in C++ code. The conventional method, 4-order Runge-Kutta, is used to solve the equations. The results of calculations show space charge effects of beam particles on each other in accelerating process.