Papers by Valery Monchinsky
Low energy beam transportation line for NICA-MPD project
Problems of Atomic Science and Technology, 2010
Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167), Nov 23, 2002
The superconducting synchrotron, named the Nuclotron is based on miniature iron-shaped field SC-m... more The superconducting synchrotron, named the Nuclotron is based on miniature iron-shaped field SC-magnets. It was put into operation in March 1993 at the Laboratory of High Energies of the Joint Institute for Nuclear Research in Dubna. Eleven runs of the new accelerator have been performed by the present time.The Nuclotron Control System (NCS) project, which is still under development, started in 1992 and has provided an efficient support for the machine commissioning through all its phases. This paper presents the current status of the whole system and some details of cryogenics, beam injection, and main power supplies subsystems.
Acceleration of polarized deuterons at the synchrophasotron from the source ‘‘Polaris’’
Nucleation and Atmospheric Aerosols, 1982
According to the program of research in the field of relativistic nuclear physics, a cryogenic so... more According to the program of research in the field of relativistic nuclear physics, a cryogenic source of polarized deuterons POLARIS has been tested at the Dubna synchrophasotron. The aim of the tests is to match the source with linac and to accelerate a beam of deuterons. The set-up is described, and results of its operation along with the accelerator are presented. 3 references, 4 figures.
Design Features of a Model Superconducting Synchrotron of {JINR}
Presented at, 1983
Lambertson magnet with shortened loop for nuclotron injection and extraction systems
Physics of Particles and Nuclei Letters, Dec 1, 2016
Systems of beam injection from the Booster and fast beam extraction for injection into the collid... more Systems of beam injection from the Booster and fast beam extraction for injection into the collider will be developed in order for the Nuclotron to operate in the framework of the NICA accelerator complex. All systems are based on the Lambertson magnets. The shortened superconducting loop is used for compensating scattered fields in the circulating beam chamber. The finite weld resistance (on an order of several nΩ) results in gradual current storage in the loop, which influences the beam upon injection. To eliminate this effect, a heater for converting the loop into the normal conducting state in the pause between cycles is applied.
Vacuum requirements for the booster of NICA accelerator complex
Physics of Particles and Nuclei Letters, Dec 1, 2010
This paper presents the results of a calculation of 197Au32+ ion beam losses as they interact wit... more This paper presents the results of a calculation of 197Au32+ ion beam losses as they interact with atoms and molecules of residual gas in the acceleration chamber of the booster vacuum system of the NICA accelerator complex [1].
Laser multicharge ion source of the dubna synchrophasotron
Springer eBooks, Apr 7, 2008
The new accelerator complex Nuclotron-based Ion Collider fAcility (NICA) is assumed to operate us... more The new accelerator complex Nuclotron-based Ion Collider fAcility (NICA) is assumed to operate using two injectors: the Alvarez-type linac LU-20 as injector for light ions, polarized protons and deuterons and a new linac HILac for heavy ions. The main features of ion sources and both linacs are presented. Upgrade for preaccelerator of LU-20 is described.
NICA Ion Coolider at JINR
The Nuclotron-based Ion Collider fAcility (NICA) is under construction in JINR. The NICA goals ar... more The Nuclotron-based Ion Collider fAcility (NICA) is under construction in JINR. The NICA goals are providing of colliding beams for studies of hot and dense strongly interacting baryonic matter and spin physics. The accelerator facility of collider NICA consists of following elements: acting Alvarez-type linac LU-20 of light ions at energy 5 MeV/u, constructed a new light ion linac of light ions at energy 7 MeV/n and protons at energy 13 MeV, new acting heavy ion linac HILAC with RFQ and IH DTL sections at energy 3.2 MeV/u, new acting superconducting booster synchrotron at energy up 600 MeV/u, acting superconducting synchrotron Nuclotron at gold ion energy 4.5 GeV/n and mounted two Collider storage rings with two interaction points. The status of acceleration complex NICA is under discussion.
Vacuum requirements for the booster of NICA accelerator complex
Physics of Particles and Nuclei Letters, 2010
This paper presents the results of a calculation of 197Au32+ ion beam losses as they interact wit... more This paper presents the results of a calculation of 197Au32+ ion beam losses as they interact with atoms and molecules of residual gas in the acceleration chamber of the booster vacuum system of the NICA accelerator complex [1].
Estimation of electron-cloud effect on NICA collider
Physics of Particles and Nuclei Letters, 2010
The preliminary results from simulating the formation of electron clouds in the NICA collider usi... more The preliminary results from simulating the formation of electron clouds in the NICA collider using the ECLOUD program package are presented. Requirements for the acceleration chamber of the NICA collider for a gold nuclei beam are discussed.
Spectrometric Setup Online with SM-3 Computer for LU-20 Linear Accelerator Nuclear Beam Composition Analysis
The existing set of Nuclotron heavy ion sources, such as duoplazmatron, polarized deuteron, laser... more The existing set of Nuclotron heavy ion sources, such as duoplazmatron, polarized deuteron, laser and electron beam ion sources permits to have ion beams over a wide range of masses. The main problem for us now is to gainhigh intensity of accelerator particles. It can be solved by means of multiturn injection of the low current beams into the booster, acceleration up to the intermediate energies, stripping and transfering into the main ring. A design study of this accelerator -- the 250 MeV/Amu Nuclotron booster synchrotron at 1 Hz repetition rate and circumference of 84 m, has been completed. The lattice dipole and quadrupole magnets have an iron yoke coils, made of hollow superconductor, are cooled by two-phase helium flow, as well as the Nuclotron magnets.
25th Russian Particle Accelerator Conf. (RuPAC'16), St. Petersburg, Russia, November 21-25, 2016, Feb 1, 2017
The new accelerator complex Nuclotron-based Ion Collider fAcility (NICA) is now under development... more The new accelerator complex Nuclotron-based Ion Collider fAcility (NICA) is now under development and construction at JINR, Dubna. This complex is assumed to operate using two injectors: The modernized Alvareztype linac LU-20 as injector of light polarized ions and a new Heavy Ion Linear Accelerator HILAc-injector for heavy ions beams. The new heavy ion linac, which accelerates ions with q/A-values above 0.16 to 3.2 MeV/u, is under commissioning. The main components are a 4-Rod-RFQ and two IH-drift tube cavities, operated at 100.625 MHz. Most recent results of the HILac commissioning with a carbon beam from a laser ion source are discussed.
29\textsuperscript{th} Linear Accelerator Conf. (LINAC'18), Beijing, China, 16-21 September 2018, 2019
Within the upgrade scheme of the injection complex of the NICA project and after a successful bea... more Within the upgrade scheme of the injection complex of the NICA project and after a successful beam commissioning of a heavy ion linac, Bevatech GmbH will build a first part of a new light ion linac as an injector for the Nuclotron ring. The linac will provide a beam of polarised protons and light ions with a mass to charge ratio up to 3 and an energy of 7 MeV/u. The mandate of the Linac does not only include the hardware for the accelerating structures, focusing magnets and beam diagnostic devices, but also the LLRF control soft-and hardware based on the MicroTCA.4 standard in collaboration with the MicroTCA Technology Lab at DESY. An overview of the Linac is presented in this paper.
PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268), Nov 14, 2002
Experiments on beam extraction from the Nuclotron, a superferric heavy ion synchrotron, were carr... more Experiments on beam extraction from the Nuclotron, a superferric heavy ion synchrotron, were carried out last year and in March, 2001. The resonance Qx=20/3, used for a horizontal betatron amplitude growth, provides beam entering the Electrostatic Septum deflector, where it obtains an initial deflection to avoid losses on the septum of the Lambertson Magnet. The latter bends the beam in the vertical plane to the level of the experimental halls. An extraction coefficient of about 70% and a spill time of 0.4s were obtained in the first experiments performed at the deuteron beam energy from 200MeV/amu to 1.5GeV/amu. Then, experiments on irradiation with C +6 and Mg +12 beams were performed on the external targets. The work, which permits one to improve the parameters of the extracted beam up to the projected ones, is discussed.
Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167)
The system for the single-turn injection of 5 MeV/u heavy ions into the Nuclotron is described. T... more The system for the single-turn injection of 5 MeV/u heavy ions into the Nuclotron is described. The system comprises a superconducting septum-magnet, kick electric plates, beam diagnostic apparatus and magnet correctors. The septum magnet has an iron yoke. The coil and septum made of a hollow superconductor, are cooled with a two-phase helium flow. The magnetic field is 1T. The electric field and its fall time in the fast kicker are 7 kV/cm and about 100 nsec, respectively. The beam diagnostics are composed of the Faraday cups and multi-wire collector chambers for current and profile measurements over a wide range of intensities. The magnetic correctors in the beam line and the Nuclotron ring are used for injection adjustment. The system has operated since 1992. The experimental results are presented.
Injector of NICA accelerating facility based on the Heavy Ion Linear Accelerator (HILAC) is aimed... more Injector of NICA accelerating facility based on the Heavy Ion Linear Accelerator (HILAC) is aimed to inject the heavy ions having atomic number A≈200 and ratio A/Z ≤ 6.25 produced by ESIS ion source accelerated up to the 3.2 MeV for the injection into superconducting synchrotron (SC) Booster. The project output energy of HILAC was verified on commissioning in 2018 using the beams of carbon ions produced with the Laser Ion Source and having ratio A/Z=6 that is close to the project one. Beams of He1+ ions were injected into Booster in its first run and accelerated in 2020. In 2021 ions of Fe14+ produced with the LIS were injected and accelerated up to 200 MeV/u. Beam formation of Fe ions and perspectives of using LIS for the production the ions with high atomic mass A and ratio A/Z matching to HILAC input parameters are described. HEAVY ION LINEAR INJECTOR Heavy ion injector of the NICA project is based on the heavy ion linear accelerator (HILAC) and aimed to be injector of gold ions ...
A mono-ion source of single-charged helium of high intensity has been created to confirm the decl... more A mono-ion source of single-charged helium of high intensity has been created to confirm the declared parameters of Heavy Ion Linear Accelerator (HILAC) [1, 2] and for the injection into superconducting synchrotron (SC) Booster during the first run. The paper presents the design of the He+ ion source, test bench for the TOF measurements and acceleration beam developed at VBLHEP, JINR. The results of the tests of the source are presented. During the tests the intense beams of ions 50 mA of He+ were produced.
The NICA accelerator complex in JINR consist of two linear injector chains, a 578 MeV/u supercond... more The NICA accelerator complex in JINR consist of two linear injector chains, a 578 MeV/u superconducting (SC) Booster synchrotron, the existing SC synchrotron Nuclotron, and a new SC collider that has two storage rings. The construction of the facility is based on the Nuclotron technology of SC magnets with an iron yoke and hollow SC cable. Assembly of the Booster synchrotron was finished in autumn of 2020 and first machine Run and experiments with ion beams were successfully done in December 2020. The results of this Run are discussed in this paper.
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Papers by Valery Monchinsky