Abstract The performance of the BINP accelerator mass spectrometer in radiocarbon dating user samples is reviewed. The operation regime of the spectrometer and the experimental procedure are described. The results of the analyses are summarized.

AbstractThe in-depth understanding of beam collective effects in the damping ring (DR) of the VEPP-5 injection complex at BINP is essential for optimizing its operation. Towards this, beam longitudinal profiles at the stage of injection into the DR and for a high-current stored beam have been measured using a streak camera and a dissector. The process of linac-beam capture into the DR has been simulated

AbstractVEPP-2000 is the only electron–positron collider with round beams. This factor enables one to increase the beam–beam effect limit. During the 2018–2019 season, the experimental program was focused on the energy range of 550–990 MeV per beam. Data accumulation was performed using CMD-3 and SND detectors. The measured luminosity integral proved to have a record value of 68 pb–1 per detector.

AbstractIn order to achieve the design luminosity in the NICA collider, it is planned to equip it with both stochastic and electron cooling. The electron-cooling system (ECS) for 2.5 MeV consists of two coolers which cool both ion beams simultaneously. The Budker Institute of Nuclear Physics (BINP SB RAS) already built and commissioned an electron cooling system for the NICA booster, and now the high-voltage

AbstractElectron-beam energy recuperation is usually used in electron-cooling systems (ECSs). The operation stability, vacuum conditions, and radiation background (which is especially important in high-voltage coolers) depend on recuperation efficiency. The only way to improve recuperation efficiency in high-voltage coolers is to increase the electron-collector efficiency. This paper describes the

AbstractA new accelerator complex with new beam lines for applied research is being constructed at the Joint Institute for Nuclear Research (Dubna, Russia) as part of the Nuclotron-based Ion Collider fAcility (NICA) project. The new beam channels are the link between the NICA accelerators and the new stations for applied studies in the applied research program. The channels provide beam transport and

Abstract—The HV electron cooling system designed at the Budker Institute of Nuclear Physics for the NICA collider is the world’s only setup developed for a collider and makes it possible to simultaneously cool two ion beams with an energy up to 4.5 GeV/u using the magnetized electron flow [1]. Due to the fact that the cooling system should be installed at the NICA collider, the distance between the

AbstractThe optimization of the optical structure of the NICA Collider is presented. The Collider optics settings are given for a working point of 9.44/9.44 and a bare gold nuclei beam with energies of 1, 3, and 4.5 GeV/u. The dynamic aperture simulation and optimization results are given. The tolerance of the magnetic field errors for the Collider structural elements and the closed orbit adjustment

Abstact—The results of a statistical and harmonic analysis of the magnetic measurement data of structural elements (dipole magnets) of the Nuclotron Booster at an injection and extraction current are presented.

AbstractCollective effects in the NICA collider are considered taking into account the results of calculations of induced electromagnetic fields (wakes) and coupling impedances of vacuum-chamber elements [1]. Coulomb shifts of longitudinal and transverse oscillations are considered and the stability of coherent oscillations in the presence of these shifts is analyzed; their influence is significant

AbstractThe possibility of applying a damping system of coherent transverse beam oscillations in a synchrotron using a positive feedback mode for the short-time excitation of coherent particle oscillations is discussed. Examples of excitation modes for the parameters of the LHC Damper system are presented.

AbstractThe creation of a new multipurpose isochronous cyclotron DC140 is being carried out at the Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research. The DC140 cyclotron is intended for microchip testing on radiation resistance, the production of track pore membranes, and applied physics. The cyclotron will accelerate heavy ions with mass-to-charge ratio A/Z ranging from

AbstractTwo main cyclotron beam extraction methods using a stripping foil and an electrostatic deflector are considered. Computation results are presented for two cyclotrons, TR-24, IPHC, Strasbourg, France (stripping foil extraction), and DC-140, FLNR, JINR, Dubna, Russia (electrostatic deflector extraction).

AbstractCurrently, work is underway to create laser accelerators with beam focusing by plasma lenses. For effective focusing, it is necessary to investigate at which initiation of breakdown a discharge forms with a more uniform distribution of current density. Our studies have shown that the plasma distribution is uniform over a longer period of time, including the region of maximum current, if the

AbstractDesign features of the electromagnet of the CC 30/15 isochronous cyclotron using mathematical modeling methods are presented. The electromagnet of shielded type has a vertically located median plane and the housing of the vacuum chamber is part of the magnetic circuit. To implement the acceleration modes of hydrogen and deuterium ions, rotary shims are used, installed in two opposite valleys

AbstractThe collective acceleration of laser plasma ions in a rapidly increasing magnetic field (108 T/s) excited by a powerful current pulse in a low-inductive conical spiral expanding in the direction of plasma acceleration has been studied. A mathematical model and an algorithm for calculating the radial Br and axial Bz components of the magnetic field in the approximation of a conical spiral by

AbstractA neutron-physical calculation is performed for neutron-producing lead, tungsten, and natural uranium targets for a subcritical assembly controlled by a proton accelerator at 0.6, 1, and 2.5 GeV. At these high proton energies, the interaction of protons with target atoms is accompanied by a splitting reaction. In terms of the neutron yield per primary proton, this reaction is more advantageous

AbstractThe purpose of this article is to develop a power-supply system for the focusing solenoids of Toshiba E37340 klystrons, which are replacing the Toshiba E3730 and Thomson TH2129 klystrons and should provide the necessary parameters for the LUE-200 accelerator. Hardware configuration, structural diagrams of the power-supply system in general, newly developed units, and the operator’s software

AbstractThe authors of the report simulated the existing modulator circuit, identified shortcomings, and developed a klystron modulator based on IJBT transistors in order to increase the power and improve the characteristics of the accelerated electron beam of the LINAC-200 accelerator. The calculation model with a detailed description of the individual elements of the modulator is presented in this

AbstractA design for a device for pulsed-power input to the cryogenic module of a septum magnet of the NICA collider is presented. This design allows the input inductance to be minimized at acceptable heat fluxes from the resistive heating and temperature gradient.

AbstractSuperconducting multipole insertion devices (wigglers and undulators) used to generate synchrotron radiation significantly increase the photon flux, especially in the hard spectral region. Over the past 35 years, more than 25 superconducting wigglers for leading centers of synchrotron radiation have been created at the BINP. A cryogenic system based on cryocoolers has been developed, which

AbstractAn Injection Complex (IC) was designed in Budker Institute of Nuclear Physics in Novosibirsk in frame of a program of super high luminosity electron-positron facility VEPP-5. The stability of its operation is determined, among other things, by an injection-extraction system and, consequently, by generators of inflectors. For stable operation of the Injection Complex, these generators must produce

AbstractAn S-band klystron of 50 MW power is being developed at the Budker Institute of Nuclear Physics. At the moment, all the necessary calculations have been made and cathode assembly, bunching cavities, the collector, the solenoid, and the cooling system have been completed. The klystron has been tested in a diode mode without bunching cavities, which were brazed separately. Cavities have been

AbstractWork on developing new software tools for monitoring and controlling the VEPP-5 damping-ring (DR) operation with upgraded stations of beam-position sensors is in progress. Using them, the DR can be calibrated using its theoretical model, the beam orbit can be steered and locally distorted, the linac-beam capture into the DR can be simulated, and a number of other tasks can be performed. This

AbstractA technique has been developed for express estimation of temperature fields using a graded curve, which can be used to justify the reliability and safety of operation of the outlet window membrane of the LUE‑200 accelerator—a driver of a pulsed Intense Resonance Neutron source (IREN). For this purpose, a multivariate numerical simulation was carried out using the developed computational models

AbstractNICA (Nuclotron-based Ion Collider fAcility) is a new accelerator complex being constructed at the Joint Institute for Nuclear Research (Dubna, Russia). NICA will provide collider experiments with heavy ions at a maximum energy up to 4.5 GeV/u and polarized protons at energy up to 12.6 GeV. It will consist of injection complex, superconducting booster synchrotron, the Nuclotron, and two collider

Abstract—The principle of operation of a distributed beam-loss monitor based on Cherenkov radiation in an optical fiber is considered. This device makes it possible to obtain a real-time distribution of losses across the entire accelerator. A numerical model of the monitor describing its spatial resolution is developed for various scenarios of the beam losses. Ways to improve the monitor are considered

Abstract—The principle of operation of a distributed beam-loss monitor based on the Cherenkov radiation in optical fiber is considered. The monitor allows real-time monitoring the distribution of the beam loss along the entire accelerator. The methods for increasing the spatial resolution of the monitor implemented on the e–e+ Injection Complex at the Budker Institute of Nuclear Physics are experimentally

AbstractThe construction of an experimental facility with test electron beams is under way at the Dzhelepov Laboratory of Nuclear Problems at the Joint Institute for Nuclear Research (Dubna, Russia). The facility is based on the MEA accelerator that was transferred from NIKHEF to JINR at the beginning of the 2000s. Despite the long service life of the accelerator, it is in good condition and still

AbstractRestDS2 is a Tango class which implements the C++ Tango REST API. It is developed at LHEP JINR to provide web access to Tango devices of the control system of the NICA accelerator complex. The module organization, its usage, results of tests, the access control system and development progress are described.

AbstractA cyclotron system based on the updated MCC-30/15 cyclotron has been developed and manufactured at JSC Efremov Institute of Electrophysical Apparatus (NIIEFA). The cyclotron system is equipped with a branched system for transporting accelerated proton and deuteron beams, a target system, and a specialized system for sample irradiation with proton beams. The target system ensures the commercial

AbstractCC series cyclotrons manufactured by the JSC Efremov Research Institute of Electrophysical Apparatus (NIIEFA) are intended primarily for the production of a wide range of radioisotope products for diagnostic and therapeutic radiopharmaceutical medicines. In order to produce thallium-201, gallium-67, copper-64, and zirconium-89 radioisotopes, the institute has carried out a series of works for

AbstractMultiple Coulomb scattering makes it possible to explain the refraction and partial reflection phenomena of charged particle beams while traversing an incline target installed on the beam path. Since the reflection coefficient is energy-dependent, its measured value may be used for calculating beam energy.

AbstractCycling equipment was developed for the Booster accelerator of the NICA complex in the form of a VME3U crate with a set of digital and optical input/output modules, which are controlled using the FPGA module.

AbstractAll modern control systems (CS’s) of large experimental facilities are distributed. Nodes are connected via Ethernet or via specific links such as CAN, RS232/485, GPIB, etc. During normal operation, all nodes are online and connections between them are established and work. However, during operation some nodes can become unavailable for various reasons: electronic failure, power-supply failure

AbstractThe design of a high-voltage collet with movable external and internal conductors is considered. The design of the grip connection, the choice of material for the grips, and the conditions for ensuring reliable electrical contact in it are described in detail. The results of tests of the high-voltage collet are presented.

AbstractA joint team from the Joint Institute for Nuclear Research (JINR) (Dubna, Russia) and Bevatech GmbH (Frankfurt-am-Main, Germany) has been developing a new light-ion linac LILac as part of the NICA project. The resonator design and the beam dynamics calculations are presented.

AbstractThe NICA accelerator complex will consist of two injector chains, a new 600 MeV/u superconducting booster synchrotron, the existing superconducting synchrotron—Nuclotron, and the new superconducting collider that has two storage rings each of about 503 m in circumference. The influence of the fringe fields and misalignments of the structure magnets, the field imperfections and natural chromaticity

AbstractThe nonlinear dynamics of the 197Au31+ ion beam in the booster has been studied with the MAD-X program. The numerical computation of the dynamic aperture for the DFO-magnetic lattice of the booster is presented. Resonances of second and third order are taken into account. An analysis of the betatron oscillation frequency spread is carried out. This paper shows that the use of multipole correctors

AbstractThe initial part (IP) of a compact pulsed proton linac with an output energy of ≃230 MeV is intended for the formation and acceleration of a beam with a pulsed current of up to \(250\,\,\mu {\text{A}}\) and up to an energy of \( \geqslant 10\) MeV, which allows the transition to the accelerating structure of the \(S\)-frequency range with a high acceleration rate. The formation of bunches with

AbstractThe distributed beam-loss monitor based on the Cherenkov radiation in an optical fiber installed on the e–e+ Injection Complex at the Budker Institute of Nuclear Physics is considered. Monitor parameters are optimized based on a numerical model and experimental data. For a 45-m-long quartz fiber (with a core diameter of 550 μm) and a microchannel plate photomultiplier as a signal detector,

AbstractThe coupling impedances of individual elements of the NICA collider are simulated in order to determine, at an early stage of design, the possible limitations of the beam intensity, reveal structural elements that can be the main sources of impedances, and formulate proposals for optimizing the geometry of structural elements in order to reduce the collective effects on the beam dynamics. The

AbstractChilled minced trout has been treated by 1-MeV electron-beam irradiation using the UELR-1-25-T-001 industrial electron accelerator. The results of the effect of exposure with doses of 0.24, 0.48, 0.96, 2.8, and 5.6 kGy on the viability of microorganisms in minced fish are presented. It is experimentally shown that electron radiation generated by the accelerator in doses of 0.24–5.6 kGy reduces

AbstractThe electrostatic corrector is a component of the mass separator of the Gas cell Laser ionization and Separation (GALS) facility and is used to correct the beam of single-charged ions emerging from the analyzing magnet. The results of the development of the corrector and its calculation are presented in this work.

AbstractThe NICA accelerator complex is developed on the JINR base in Dubna for performing physical experiments on colliding beams of heavy ions. It consists of the injection complex, booster synchrotron, upgraded Nuclotron synchrotron, and heavy-ion collider. The booster is currently under assembly. The system, developed at the LHEP JINR to perform precise temperature measurements of superconducting

AbstractMany control-system (CS) frameworks are used for automation in high-energy physics. EPICS and TANGO are most common worldwide. The need for interoperation (data exchange) between different frameworks has increasingly occurred over the past decade. The reasons for this may be the collaborative operation of several, previously independent facilities (VEPP-2000, VEPP-4, and IC at the Budker Institute

AbstractThis article presents the general layout, requirements for main elements, design of main elements, overall design, and calculation of the magnetic fields of the Nuclotron injection kicker.

AbstractThe lattice of the NICA collider includes 80 twin-aperture superconducting dipole magnets. Measurements of the magnetic field parameters should be done for both apertures of each collider magnet. For the time being 25% of the magnets are successfully passed the tests. This paper describes the state of serial magnetic measurements and results of test at helium temperature.

AbstractWhen creating accelerators and storage-ring installations in a compact space, there is not always enough space for all the necessary magnet elements. In this case, we can reduce the number of correctors if we shunt magnet coils by a special bypass module, which can take some of the current away [1]. This paper describes this type of bypass module, which can recuperate energy taken to the electrical

AbstractThe Budker Institute of Nuclear Physics has been designing two accelerator facilities of the MegaScience class [1, 2]. It is planned to use the same bipolar power supplies sources for corrector magnets in both projects. These power supplies must provide an output current of 6 and 12 A and output voltage up to 100 V. Identical power-supply sources will be used both for slow orbit correction

AbstractThe VEPP-5 injection complex, consisting of two linacs and a damping storage ring, delivers electron and positron beams to the VEPP-4M and VEPP-2000 colliders operating at BINP. Over three years of injector operation, its efficiency has significantly increased and the maximum positron-storage rate has reached 1.2 × 1010 s–1. This progress was reached through tuning the constituent machines

Abstract—The Multifunctional Information and Computing Complex (MICC) of the Information Technology Laboratory at the Joint Institute for Nuclear Research provides the conditions necessary for arranging the data processing. Diagnostics of this equipment is conducted by a monitoring system. The development of the computing complex involves the augmentation of the computing power, which increases the

AbstractIn this paper we study the dynamics of a charge interacting with its own field in the one-dimensional case and in the spherically symmetric three-dimensional case. The Schrödinger equation with the nonstationary Hamiltonian is used. In this case, a nonstationary problem reducing to a nonlinear system of ordinary differential equations has been solved.

AbstractThis work studies the behavior of a spherically symmetric single-component dense cloud of charged particles under the influence of their own field. A kinetic description based on Meschersky’s integral has been used. Particle movements have been studied with the growing and decreasing characteristic function \(\xi (t).\)

AbstractThe magnetic dipole polarizabilities and hyperpolarizabilities of the vector \({{\rho }^{0}}\) and \({{\rho }^{ \pm }}\) mesons have been calculated. The new characteristic of NPQCD in the strong magnetic field called tensor polarizability has been introduced, which is related to the tensor polarization of vector mesons. The contribution of the dipole magnetic polarizabilities to the tensor

AbstractThe energy spread of the VEPP-4M electron–positron collider at the Budker Institute of Nuclear Physics was measured in the 1100–4750 MeV range (i.e., in the entire operating energy range of the collider) in two ways: based on the beam length and based on the envelope of betatron oscillations. The influence of the Touschek effect on this parameter was studied in the 1–1.5 GeV range. The results

AbstractThe results of using the FLUKA package to calculate the radiation environment around building no. 1 of the Laboratory of High Energy Physics, which contains the ion injection systems, booster, and Nuclotron of the NICA complex in operation for the collider and for experiments with fixed targets, are presented. The calculation has been performed for the mode of 197Au ion acceleration to an energy

AbstractThe results of the second stage of laboratory tests of the space gamma-spectrometer model on the phasotron installed at the JINR Laboratory of Nuclear Problems are presented. Tagged protons are applied in these experiments. Comparative estimates of the sensitivity of the tagged-proton method used aboard lander stationary or mobile platforms to detect inhomogeneities in the underlying surface

AbstractStrangeness production in heavy-ion collisions is one of the main goals of the scientific program at the NICA accelerator complex. The MPD detector is designed to study the properties of strongly interacting matter at extreme baryon densities. In this article, the MPD performance to measure the excitation function of the strangeness to entropy ratio in central Au + Au collisions is reported

AbstractThe spectrum of spinless modes in a model with the \(SU{{(2)}_{L}} \times U{{(1)}_{R}}\) symmetrical four-quark-interaction proposed by Miransky, Tanabashi, and Yamawaki is studied. For the sake of simplicity, only four-fermion interactions of top and bottom quarks are considered. The spinless modes result from spontaneous electroweak interaction symmetry breaking and are coupled quark–antiquark