At the Joint Institute for Nuclear Research together with the Institute of Nuclear Physics named after G. I. Budker SB RAS plans to carry out experiments with NICA accelerator complex dedicated to spin effects studying in polarized protons and deuterons collisions. As addendum to the spin physics program, it is being planned experiment by testing P-parity violation in pd-scattering at target. To carry out this experiment, it has to study the possibility of obtaining a p or d beam with dynamically stable longitudinal polarization with different signs. In this paper, we consider investigation of the organization for such configuration of spin using RF rotators in the Nuclotron ring. The spin flip process for deuterons and protons beam has simulated taking into account synchrotron oscillations and energy diffusion. Based on the obtained results, conclusions about opportunity of gaining dynamically stable longitudinal polarization for this way have done.

As part of the implementation of the Federal Scientific and Technical Program for the Development of Synchrotron and Neutron Research and Research Infrastructure for 2019–2027, a scientific and educational medical nuclear medicine center (SEMC NM). The task of constructing the SEMC NM also includes the construction of a proton beam therapy center, which should become the basis for long-term development of equipment and technologies for new generations of proton beam therapy, their implementation in practical healthcare by replicating in the constituent entities of the Russian Federation and friendly countries, as well as training personnel (medical physicists and clinicians). The article presents the results of preliminary design of the accelerator equipment for the created proton beam therapy complex, which is implemented on the basis of the proton synchrotron.

At the BINP, the development, production and launch at JINR of a system for transferring a beam from the Booster to the Nuclotron of the NIKA complex was completed. The article discusses the equipment of monitoring and control subsystems, as well as describes the principles and composition of a software package based on the TANGO platform, designed to perform engineering manipulations with individual elements and suitable for work during acceleration sessions.

In proton therapy, depth scanning of the irradiated object is performed by changing the Output Energy (OE) of the accelerated beam. In pulsed linear accelerators, adjustment of the OE is usually by changing the amplitude and/or phase of the fi eld in the accelerating elements from one RF pulse to another. The application of non-inertial traveling wave accelerating sections makes it possible to change quickly the phase of the accelerating fi eld during the RF pulse. The phase of the fi eld in the constant gradient section is determined both by the phase of the input RF signal and by the process of wave propagation in the dispersive structure. The calculation results of the traveling wave propagation in the accelerating structure when the phase of the input RF signal changes and the results of simulation the dynamics of particles confirm the change in the linac’s OE during the RF pulse. The proposed method for regulation the OE makes it possible to increase in orders the speed of scanning the irradiated object by depth.

The paper describes the magnetic injector system for the SRF “Siberian Circular Photon Source” (SKIF). The results of modeling quadrupole and solenoid lenses, as well as dipole correctors for an injector based on a linear accelerator are presented. These elements should make it possible to transport the electron beam throughout the accelerator without loss. The results of measurements of all produced magnetic elements are demonstrated. The described elements are working normally at the linear accelerator stand.

The VITA accelerator neutron source based on a vacuum insulated tandem accelerator operates at the Institute of Nuclear Physics SB RAS. The development of a separate compact facility for the generation of fast neutrons is an actual task, it will allow the treatment of malignant tumors via boron-neutron capture therapy with fast neutrons and a number of other applications. To control the facility, store and analyze data, the author has previously created an automation system that allows the operator to provide long-term stable proton or deuteron beam production in a wide range of energy and current variations, and scientific staff to obtain experimental data and process them in real time.

Currently, the BINP SB RAS is manufacturing the accelerating neutron source VITA for the National Medical Research Center for Oncology named after N. N. Blokhina in Moscow. It is planned to put it into operation in 2025. In contrast to the operating experimental installation of the BINP SB RAS, an ion source from the D-Pace company (Canada) will be used.

This paper presents the automation procedure for the new ion source, control algorithms, PID controller coefficients and operating parameters, which made it possible to obtain a maximum average beam current on the Faraday cup of 13 mA with a stability of 0.14%.

The study provides a comparative analysis of some approximate and exact solutions for a modified forming electrode in a Pierce gun with a thermal gap. Using numerical simulation, the degree of equivalence of different solutions is shown from the point of view of practical implementation and beam quality. Finally, a specific shape of the modified Pierce electrode is presented, taking into account realistic constraints on the design freedom.

As part of the NICA megascience project the magnetic-cryostat system of the superconducting Collider is being assembled. The structural units of the Collider are 88 dipole and 82 quadrupole magnets of various configuration. In order to improve the accuracy of alignment of quadrupole magnets to the theoretical closed orbit of the beam in the Collider, it is necessary to measure the position of the magnetic axis in the coordinate system of the magnet. Vibration wire technique is used to perform such measurements in VBLHEP. The system operates at ambient temperature and allows measuring the position of the magnetic axis with an accuracy of ±0.053 mm. The article presents the design of the magnetic measurement system, an accuracy assessment is made and the current results of measurements of the position of the magnetic axis of the NICA Collider quadrupole magnets.

The results of visualization of a near-wall turbulent flow with air blowing of various intensity through a perforated surface area on an axisymmetric body with an aspect ratio of 25.3 under conditions of an incompressible flow around are presented. It is shown that the use of the laser knife method with seeding the flow with light-scattering particles 1–2 μm in size, formed from a water-based mixture that includes polyglycol, makes it possible to visualize the structural elements of the near-wall flow region, which are technically difficult to detect by traditional measurement methods.

Achieving a maximum thermoelectric figure of merit causes an increase in the efficiency of conversion processes by improving the thermoelectric properties of the material. In this regard, it is relevant to study the thermoelectric efficiency of chalcogenide semiconductor compounds and the efficiency of the conversion process of film converters based on them. The position of the maximum value of thermoelectric efficiency is predetermined by the scattering parameters and the ratio of the mobilities and effective masses of charge carriers. Increasing the thermoelectric efficiency of the material is achieved by optimizing the thermoelectric parameters by improving the properties, which leads to optimization of the concentration of charge carriers. Improving the thermoelectric properties of the material and increasing the efficiency of conversion processes is ensured when the concentration corresponds to the optimal value. The use of film transducers provides information in the process of monitoring and measuring physical quantities, as well as in the manufacture of high-tech products.