As part of the NICA (Nuclotron-based Ion Collider fAcility) and FAIR (Facility for Antiproton and Ion Research, Darmstadt, Germany) projects, superconducting magnets are being manufactured and tested at the V. I. Veksler and A. M. Baldin Laboratory of High Energy Physics (VBLHEP) of the Joint Institute for Nuclear Research (JINR). The structure of the NICA Collider includes 290 superconducting dipole, quadrupole, and correction magnets [1]. An energy evacuation system is used to protect magnets from damage while exiting the superconducting state. This system underwent necessary upgrade to expand the inductance range of the tested magnets to 210 mH Circuit design solutions for electronic control units were developed. Simulation and successful testing of new electronic modules were carried out. These modules were put into operation as elements of the existing cryogenic test bench for superconducting magnets. This paper describes the operating principle of the energy evacuation system and its constituent components, as well as the results of its operation during the testing of superconducting magnets for the NICA and FAIR accelerator complexes.

In an open magnetic trap for confining high-temperature plasma, the key problem is longitudinal heat loss, which is addressed by a plasma flow expander. Previous studies have shown that neutral gas can reduce the expander efficiency. In this paper, a model is proposed that describes the distribution of neutral gas inside the plasma and beyond it to the expander walls. The results show that the gas concentration near and inside the plasma is orders of magnitude lower than near the walls. This indicates less stringent restrictions on the maximum concentration of neutrals inside the plasma.

The splitting of spectral lines in a magnetic field is considered in this paper. approximations of weak and strong magnetic field and quantum mechanical analysis in the case of any field are reviewed. Transitions ²P_3/2,1/2 – ²S_1/2 and ²D_5/2,3/2 – 2P_3/2,1/2 are considered in detail. The results of calculations of bright line splitting in the plasma of the GOL-3 facility and comparison of the calculated line profiles with experimental data are presented.

The problem concerned rapid pulsed hydrogen filling of a long, vacuumed cylindrical tube was solved. The numerical solution was performed with a system of gas dynamics equations. According to the results of this solution provide a picture of the spatiotemporal dynamics of the tube filling with hydrogen injected through nozzles installed at its ends. Results of the simulation demonstrated that the chosen engineering and physical solution for filling the tube with hydrogen satisfies the requirements for creating a thin plasma column with a high electron concentration.

This publication considers examples of the development and application of semiconductor nanostructures for the implementation of quantum technologies in solving problems of developing modern information and telecommunication technologies. These include: heterojunction field-effect transistors with high electron mobility; multi-element matrix infrared photodetectors on multilayer heterostructures with quantum wells; quantum cascade lasers; vertical-cavity semiconductor lasers; sources of single and entangled photons with quantum dots in the active region; spin structures in the germanium-silicon epitaxial system with quantum dots. The application of semiconductor nanostructures is expected in new areas of semiconductor electronics, such as the development of universal memory, neuroprocessors, spintronics, quantum computers and quantum cryptography, elements of microwave and terahertz electronics, optoelectronics and radiophotonics, thermal and night vision devices.