Dynamics Modeling And Control Method Researching Of Halo-chaos

With the gradual reduction of conventional fossil fuels,the world pay more and more attention to energy issues,looking for a safer, cleaner and cheaper is urgent, nuclear fission has become focus of attention. High intensity beam accelerator is very important to obtain nuclear fission energy. It can drive nuclear to generate clean energy,called ADS.When Some large horizontal velocity particles will escape from the beam envelope and surround the beam envelope.This phenomenon will influence the use of accelerators. Therefore,looking for an effective method to control beam halo and designing appropriate accelerator become the major difficult. For the proton beam halo-depth study has very important theoretical and practical significance.These are very challenging subjects for the current research.In this article,the study object is the beams that original distribution meet K-V distribution.Five physical mechanism of halo-chaos are analyzed by using particle envelope model and previous control method are summarized.Then nonlinear resonances and halo-chaos behavior of an intense charged-particle beam are researched by calculating and analyzing the influence of the strength of the focusing field and the beam perveance which is a measure of the beam self-field intensity about the intense charged-particle beam. It clearly illustrates the nonlinear oscillations of the beam envelope and the spatial distribution of the corresponding test particle in different conditions.This paper puts forward a new method which is more simple and easier to achieve in the practical engineering,called sinc function control method. The beam envelope oscillations and the orbits of single-particle are simulated by using Poincare mapping technique.Two methods are compared by analyzing quality parameters of the controlled system.The results show that two methods are both effective for elimination and regeneration of beam halo-chaos.