Studies have been carried out of an MHD stable rotating plasma with the following parameters: mean ion energy up to 40 keV in the laboratory frame of reference or up to 20 keV in the rotating frame of reference, plasma density 3 × 1011 cm−3 (and up to 1012 cm−3 in special regimes), mean energy of electrons 0.1−1.0 keV (non-Maxwellian spectrum), lifetime of ions 10−4 s (determined by charge exchange), and plasma volume 0.1 m3, in experiments on the PSP-2 device. The field strength in the plasma was about 20 kV/cm, and the total voltage achieved 0.5 MV. The MHD stabilization conditions are in agreement with the theoretical estimates. A hot plasma was created in a high voltage E⃗ × B⃗ discharge, the cold hydrogen gas having been puffed without any heating or plasma injection systems.
The results of development and investigation of computer-vision systems for inspection of the external view of fuel pellets for nuclear fuel elements are presented. The systems developed utilize CCD-cameras to record the images of a fuel pellet’s external view in reflected beams that ensures high contrast of the defects in the picture area. One has developed a database containing images of simulators, as well as real pellets. Tests of an experimental set for fuel pellet inspection have demonstrated its inspection productivity to be 1 pellet per second and its detection probability higher than 95%. The research team has also developed an experimental set with higher inspection productivity (at least 7 pellets per second).
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