Document Type : Original Article
Authors
1 Isfahan University of Technology
2 Department of Physics, Isfahan University of Technology
3 School of Physics and Accelerator, Institute for research in Nuclear Science and Technology, Atomic Energy Organization of Iran
4 School of Physics and Accelerators, Institute for Science and Nuclear Technology, Tehran, Iran
Abstract
In a high power linear accelerator, the current factor is a limiting parameter and affects the energy gain of the particles. Beam has the ability to excite acceleration modes and higher-Order. The beam effects in the excitation of acceleration modes are known as beam loading. In this article, the beam loading effect for a constant impedance traveling wave accelerating tube in S band is simulated by CST software and the results are compared with the theoretical relation obtained from energy conservation. The main purpose of this article is to investigate the effects of beam loading in constant impedance acceleration structures. The comparison of the results shows that there is a good match between the simulation and the theoretical relationship. The results show that the beam loading effects cannot be compensated by changing the radiofrequency design. The results of this study will be used to design a high-powered accelerator with an energy of 30 MeV and an average power of 30 kW in the S band.
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