Long-term x-ray suppression system in an accelerating tube

This paper presents the results of experimental and theoretical research on the x-ray suppression system for the compact accelerating facility (AF) "Sokol" of the Institute of Applied Physics, National Academy of Sciences of Ukraine (Sumy). The dose rate of the AF was suppressed by a magnetic system consisting of permanent Nd-Fe-B magnets. This system allowed us to suppress the dose rate by two orders of magnitude (radiation dose from 65 to 1.45 μrad/s, energy 1400 kV). Experimental study results are presented for a beam profile and emittance of an electrostatic accelerator "Sokol" before and after being equipped with a magnetic x-ray suppression system. The data obtained in 2025 indicate that the meteorological characteristics of the system remained within the limits determined in the studies conducted in 2007. While the general concept of x-ray suppression is not new, the long-term validation of this method over 17 years of operation gives the work a practical and applied novelty.