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Journal of Applied Mechanics and Technical Physics

2015 year, number 1

Evaluation of the radiation parameters of the gamma–4 electrophysical facility

N. V. Zav'yalov, V. S. Gordeev, S. Yu. Puchagin, A. L. Mozgovoi, A. V. Grishin, K. V. Strabykin, D. O. Mansurov, M. A. Moiseevskikh, E. S. Berdnikov
Institute of Experimental Physics (VNIIEF), Russian Federation Nuclear Center, Sarov, 607188 Russia
Keywords: electrophysical facility, vacuum pinch–diode, target, bremsstrahlung, exposure dose

Abstract

This paper presents the results of measurements of the generation parameters of the Gamma–4 electrophysical facility designed to generate high-power bremsstrahlung pulses with a duration of ≈50 ns. Five shots of the Gamma–1 accelerator were performed, in which the bremsstrahlung exposure dose was measured at a distance of 20, 30, and 60 cm from the accelerator target. It is shown that the experimental data correspond to the radiation field of a point cosine source with a relative error of 13%. The spatial distribution of the bremsstrahlung exposure dose of the Gamma–4 facility was reconstructed taking into account the spatial orientation of the irradiators. The bremsstrahlung exposure doses at a distance of 15 cm from the modules targets are presented.