Новый взгляд на дуальную симметрию в классической электродинамике и магнитный монополь в проекте ATLAS Ю.А. Курочкин Introduction As is well known in September 1909 R.A. Milikan discovered the quantization of electric charge by carrying out famous water drop experiment. More seventy years ago has raised again a question about existence of the isolated magnetic charge, presently known as the Dirac magnetic monopole. Since then there were many the theoretical and experimental works devoted to the monopole problem. However till now this problem is far from end. Because there are no experimental proofs of the monopole detection and serious theoretical interdictions for its existence. The incessant interest to the magnetic monopole problem is based on the three arguments. The first argument concerns the quantization of electric charge. e g = n ħc/2 (P.A.M. Dirac, 1931) Дуальная симметрия Дуальная симметрия Дуальная симметрия Дуальная симметрия Дуальная симметрия Two-photon monopole production in MadGraph Monopole Couplings In Heaviside-Lorentz units the Dirac change quantization in the case n=1 becomes: The definition of the electric charge in terms of the fine-structure α where Generating Events Two-photon vs Drell-Yan Implementation into the ATHENA framework Distributions Distributions Conclusion We have implemented the monopole-antimonople production via diphoton fusion using MadGraph as a generator. The pairs were generated using the elastic proton-proton scattering (although the simulation may be easily extended to include the semi-elastic and inelastic production).Using the generator we showed the production cross-section as a function of the monopole mass and found it to be consistent with the previous theoretical calculations. We also plotted a few representative monopole and antimonopole distributions and found that the bulk of the events fall within the acceptance of the ATLAS detector. The generated MadGraph events can be easily incorporated into the ATHENA framework, so that the fully reconstructed events maybe generated.