ИСТИНА

We consider electromagnetic field emerging during particle accelerator experiment [1]. Highenergy electrons flux spreads in a gas medium and interacts with solid-state barrier, generating self-consistent electromagnetic field. Mathematical model of the situation includes description of high-energy electrons transfer, elastic and inelastic scattering, bremsstrahlung and medium excitation [2]. To compute particle propagation we apply modifications of particle-in-cell method to gas medium segment and Monte Carlo method [3,4] to barrier. Electromagnetic field is composed of currents generated by high-energy electrons and by conductance current in ionized medium. It is obtained from finite-difference scheme for Maxwell equations [5]. The key feature is account of influence of fluid dynamic effects caused by energy release during primary electrons propagation on scattering medium properties. Gas state is described by Euler’s equations with particles energy release as energy source [6]. Scattering properties of a solid-state barrier are modeled by equations of magneto fluid dynamics [7]. We consider thermomechanical behavior change insignificant during particle life time. Preliminary results of numerical methods development and testing are represented. Acknowledgement : The reported study was partially supported by RFBR, research project No. 14-01-00350 References: 1. A. Andrianov A., A. Berezin, A., A. Vorontsov, K. Efimkin, V. Zinchenko, M. Markov, A. Chlenov, ”Modeling the electron beam from the accelerator LIA-10 on the multiprocessor computer system”, Mahtematical Modeling, 22(2), 29-44 (2010) 2. N. Mott, H. S. W. Massey, “The theory of atomic collisions”, IIL, Moscow, (1949) 3. A. Andrianov, A. Berezin, A. Vorontsov, K. Efimkin, V. Zinchenko, M. Markov, “The radiational electromagnetic fields modeling at the multiprocessor computing systems”, Mahtematical Modeling, 20(3), 98-114 (2008) 4. M. Zhukovskiy, R. Uskov, “Modeling of interaction between gamma rays and matter on hybrid computers”, Mahtematical Modeling, 23(7), 20-32 (2011) 5. A. Berezin, A. Krukov, B. Plyushchenkov, “The method of electromagnetic field with the given wavefront calculation” Mahtematical Modeling, 23(3), 109-126 (2011) 6. L. D. Landau, E. M. Lifshitz, “Fluid Mechanics”, 2 nd edition, Nauka, Moscow, (1988) 7. V. Gasilov, S. D'yatchenko , A. Chuvatin, O. Olkhovskaya, A. Boldarev, E. Kartasheva, G. Bagdasarov, “Performance analysis of magnetic flux compression by plasma liner”, Mahtematical Modeling, 21(11), 57-73(2009)