Using EGS4 To Study The Dose Distribution In The Reaction Chamber

A question for discussion problem studied the dose distribution of reaction chamber that it has flue gas desulfurization and denitrification by irradiaton of Electron beam. Its system consists mainly of acceleration and reaction chamber, systemic reaction chamber is its key componentsjt is important to study reaction mechanism of desulfurization and denitrification by irradiaton of Electron beam and explore the efflects of desulfurization and denitrification for Irradiation distribution and validate designs of reaction chamber as to the dose distribution of reaction chamber. In this work, the dose distribution of reaction chamber were calculated theoretically by Using EGS4 Monte Carlo code system. We do a few works as follows:First of all,for the sake of Validating to deal with this question in thoughtway and test EGS4 code,compare the simulative result with the experiential formula result calculated and the experimental result provided in the literature by setting a few representative environment and conditionâ‘  analog computer the field of fire in the aluminum for the electron beam byvertical incidence at a surface ;â‘¡ analog computer the dose distribution of the water model for the parallel and wide electron beam wide by vertical incidence;â‘¢ analog computer the dose distribution of the water model for the parallel and wide photon beam wide to vertical incidence;â‘£ analog computer the dose distribution of resembling to study a question for discussion problem.The result made know that it is right and dependable for using the EGS4 and Pegs4 code and it is feasible to deal with geometrical shape approximately in reaction chamber.Secondly,the paper study object it is the dose distribution of reaction chamber for flue gas desulfurization and denitrification by irradiaton of Electron beam shot accelerator, the dose distribution in reaction chamber were not groovy symmetrical, it bring considerable difficulty, and it was not to report in the literature.I used the method that it is delamination incised, reaction chamber was separated into 6279 parts.In the end , the dose distribution of reaction chamber were calculated by EGS4 Monte carlo system with 0.8 MeV initial electron energy, and The calculation uncertainty was controlled with 1%. as a r esult follows:(D the dose distribution along direction of the electron gun in reaction chamber decrease gradually in size and degressive grads become mild;(2) the dose distribution along direction of the breadth for titanium window is biggest in the interspace, long symmetrical both sides decrease gradually;(3) he dose distribution along direction of the longness for titanium window breadth is biggest in the interspace long symmetrical both sides decrease gradually.It is not only to know the dose distribution of reaction chamber variational tide, but also know the absolute dose value(Gy/cm2,Gy) This kind of work proposes a useful theoretical tool for optimizing technology of electron radiation processing .