Keyword: acceleration
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MOY01 The NICA Complex Injection Facility booster, injection, heavy-ion, proton 7
 
  • A.V. Butenko, S.A. Kostromin, I.N. Meshkov, A.O. Sidorin, E. Syresin
    JINR/VBLHEP, Dubna, Moscow region, Russia
  • H.G. Khodzhibagiyan, G.V. Trubnikov
    JINR, Dubna, Russia
 
  The Nuclotron-based Ion Collider fAcility (NICA) is un-der 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 NICA complex injection facility consists of four accelerators: Alvarez-type linac LU-20 of light ions up to 5 MeV/u; heavy ion linac HILAC with RFQ and IH DTL sections at energy 3.2 MeV/u; superconducting Booster synchrotron at energy up 578 MeV/u; superconducting synchrotron Nuclotron at gold ion energy 3.85 GeV/u. In the nearest future the old LU-20 will be substituted by a new light ion linac for acceleration of 2<A/z<3 ions up to 7 MeV/u with additional two acceleration sections for protons, first IH section for 13 MeV and the second one - superconducting for 20 MeV. The status of NICA injec-tion facility is under discussion.  
slides icon Slides MOY01 [52.421 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOY01  
About • Received ※ 05 October 2021 — Revised ※ 08 October 2021 — Accepted ※ 13 October 2021 — Issued ※ 18 October 2021
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MOPSA49 DC140 Cyclotron, Trajectory Analysis of Beam Acceleration and Extraction cyclotron, extraction, operation, injection 205
 
  • I.A. Ivanenko, N.Yu. Kazarinov
    JINR, Dubna, Moscow Region, Russia
  • V.I. Lisov
    JINR/FLNR, Moscow region, Russia
 
  At the present time, the activities on creation of the new heavy-ion isochronous cyclotron DC140 are carried out at Joint Institute for Nuclear Research. DC140 facility is intended for SEE testing of microchip, for production of track membranes and for solving of applied physics problems. Cyclotron will produce accelerated beams of ions A/Z= 5 - 5.5 and 7. 5 - 8.25 with a fixed beam energy 4.8 MeV/n and 2.124 MeV/n respectively. The variation of operation modes is provided by changing of magnetic field in the range 1.4T - 1.55T with fixed generator frequency 8.632 MHz. In this report, the results of design and simulation of the beam acceleration and extraction are presented.  
DOI • reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA49  
About • Received ※ 12 September 2021 — Revised ※ 15 September 2021 — Accepted ※ 20 September 2021 — Issued ※ 02 October 2021
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MOPSA52 Modeling of the Magnetic System of the Cyclotron of Multicharged Ions cyclotron, induction, simulation, light-ion 216
 
  • Yu.K. Osina, A.V. Galchuck, Yu.N. Gavrish, Yu.I. Stogov
    NIIEFA, St. Petersburg, Russia
 
  This paper presents the results of the calculation of the magnetic system of the cyclotron for accelerating of multicharged ions developed at NIIEFA JSC. The cyclotron complex is designed to generate ions with a mass-to-charge ratio in the range A/Z= 3/7, accelerate them to energies in the range of 7.5-15 MeV per nucleon. The cyclotron electromagnet has a four-sector structure, with a pole diameter of 4 m. Radial coils placed on the poles under the sectors are designed to adjust the magnetic field for providing isochronous acceleration conditions for different ions. A group of azimuthal coils designed to correct the first harmonic of the magnetic field and to center the orbits of the accelerated ion, as well as to ad-just the position of the axial symmetry plane of the magnetic field is located on the sectors. The required magnetic field topology for ion acceleration was formed in the induction range of 1.29-1.6 T. Calculations were per-formed for the 1/8 part of the electromagnet. A mode was chosen in which the dependence of induction on the radius, which provides isochronism, is realized due to the shape of "iron". For this mode with an induction in the center of 1.44 T, the shape of side plates, plugs, and sec-tor chamfers was determined. The currents in radial coils and the main dynamic characteristics of the cyclotron magnetic field for ion acceleration in the energy control range were calculated using the obtained magnetic field maps.  
DOI • reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA52  
About • Received ※ 25 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 18 October 2021
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TUPSB12 Development of a Program Code for Calculation of Charged Particle Dynamics in RFQ rfq, simulation, space-charge, quadrupole 256
 
  • A.S. Boriskov, A.M. Opekunov, L.E. Polyakov, N.V. Zavyalov
    RFNC-VNIIEF, Sarov, Nizhniy Novgorod region, Russia
  • M.L. Smetanin, A.V. Telnov
    VNIIEF, Sarov, Russia
 
  The calculation of charged particles dynamics is the initial stage in the development of an accelerator. The advancement of computer technology makes it possible to calculate particle dynamics using numerical methods with a required accuracy. During beam dynamics calculation it is necessary to take into account RF field force and self-induced Coulomb forces which also have an effect on charged particles. In this paper a model of «large particles» was chosen to simulate a space charge effect. To implement this model, a program code was written using parallel computing tools in the «C» programming language in the CUDA toolkit. The dynamics of ions with a ratio A / Z from 1 to 3.2 (A - the mass number, Z - the charge state of the ion) in the RFQ structure was calculated. The operating frequency of structure is 81.25 MHz, output energy is up to 820 keV / nucleon. Output beam characteristics (relative velocity, particle capture coefficient, beam profile, transverse emittances, longitudinal phase portrait) were determined. These results were verified by the BEAMDULAC-RFQ program*.
* Polozov S. M., Prob. of Atomic Sci. and Tech., 3 (79), 2012, pp. 131-136.
 
DOI • reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB12  
About • Received ※ 30 September 2021 — Revised ※ 01 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 14 October 2021
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WEPSC14 Booster RF System First Beam Tests booster, controls, cavity, injection 370
 
  • A.Yu. Grebentsov, O.I. Brovko, A.V. Butenko, V.A. Gerklotts, A.M. Malyshev, V.D. Petrov, O.V. Prozorov, E. Syresin, A.A. Volodin
    JINR, Dubna, Moscow Region, Russia
  • A.M. Batrakov, S.A. Krutikhin, G.Y. Kurkin, V.M. Petrov, A.M. Pilan, E. Rotov, A.G. Tribendis
    BINP SB RAS, Novosibirsk, Russia
  • G.A. Fatkin
    NSU, Novosibirsk, Russia
 
  The project NICA is being constructed in JINR, to provide collisions of heavy ion beams in the energy range from 1 to 4.5 GeV/u at the luminosity level of 1·1027 cm-2·s⁻¹. A key element in the collider injection chain is the Booster a cycling accelerator of ions 197Au31+. The injection energy of particles is 3.2 MeV/u, extraction energy is 600MeV/u. Two Booster RF stations provide 10 kV of acceleration voltage. The frequency range from 587 kHz to 2526 kHz at the operation of the stations in the injector chain. The RF stations were fabricated in the Budker Institute of Nuclear Physics. The main design features and parameters of the first beam tests of the Booster RF system are discussed in this paper.  
DOI • reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC14  
About • Received ※ 17 September 2021 — Revised ※ 27 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 16 October 2021
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WEPSC18 Serial Magnetic Measurements of the NICA Collider Twin-Aperture Dipoles. The Main Results dipole, collider, superconducting-magnet, status 383
 
  • D.A. Zolotykh, I.I. Donguzov, S.A. Kostromin, I. Nikolaichuk, T. Parfylo, M.M. Shandov, A.V. Shemchuk, E.V. Zolotykh
    JINR/VBLHEP, Dubna, Moscow region, Russia
  • V.V. Borisov, O. Golubitsky, H.G. Khodzhibagiyan, B.Yu. Kondratiev
    JINR, Dubna, Moscow Region, Russia
 
  NICA Collider includes 80 dipole two-aperture superconducting magnets. 80 main and 6 reserve magnets were manufactured and tested by specially designed magnetic measurement system. Dipoles were tested at an ambient and operating temperatures. This paper contains the main results of magnetic measurements of the NICA Collider dipoles.  
DOI • reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC18  
About • Received ※ 29 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 22 October 2021
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FRA01 Peculiarities of Producing 48Ca, 48Ti, 52Cr Beams at the DC-280 Cyclotron ECR, cyclotron, experiment, injection 93
 
  • K. Gikal, S.L. Bogomolov, I.A. Ivanenko, N.Yu. Kazarinov, D.K. Pugachev, V.A. Semin
    JINR, Dubna, Moscow Region, Russia
  • V.I. Lisov, A.A. Protasov
    JINR/FLNR, Moscow region, Russia
 
  The first beam of 84Kr14+ ions was accelerated in the DC-280 on December 26, 2018 and extracted to the ion transport channel on January 17, 2019. In March 2019, beams of accelerated 84Kr+14 ions with intensity of 1.36 pmkA and 12C+2 ions with and intensity of 10 pmkA were extracted from the DC-280 to the beam transport channel with energy about 5.8 MeV/nucleon. In 2020-2021 years, beams of 48Ca7+,10+ ions with intensity up to 10,6 pmkA were accelerated and 7,1 pmkA were extracted from the DC-280 to the beam transport channel with energy about 4,51 - 5,29 MeV/nucleon. In 2021 year, beams of accelerated 52,54Cr10+ ions with intensity up to 2,5 pmkA were extracted from the DC-280 to the beam transport channel with energy about 5,05 MeV/nucleon and beams of 48Ti7+ with intensity up to 1pmkA and with energy about 4,94 MeV/nucleon The main task of the new accelerator is implementation of the long-term program of researches on the SHE Factory aimed on synthesis of new elements (Z>118) and detailed studying of nuclear- physical and chemical properties of earlier opened 112-118 ones.  
slides icon Slides FRA01 [9.228 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRA01  
About • Received ※ 18 September 2021 — Revised ※ 25 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 16 October 2021
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FRB04 A Linear Accelerator for Proton Therapy linac, proton, operation, focusing 117
 
  • V.V. Paramonov, A.P. Durkin, A. Kolomiets
    RAS/INR, Moscow, Russia
 
  For applications in proton therapy, linear accelerators can provide beam performances not achievable with cyclic facilities. The results of the development of a proposal for a linac with the maximal proton energy of 230 MeV are presented. Operating in a pulsed mode, with a repetition rate not less than 50 Hz, the linac is designed to accelerate up to 1013 protons per irradiation cycle lasting from 10 to 200 seconds. Possibilities of fast, from pulse to pulse, adjustment of the output energy in the range from 60 MeV to 230 MeV, formation and acceleration to the output energy of a "pencil-like" beam with a diameter of ~ 2 mm are shown. Optimized solutions, proposed for both the accelerating-focusing channel and the technical systems of the linac make it possible to create a facility with high both target and technical and economic features. Special attention, due to the selection of proven in long-term operation parameters of the systems, is paid to ensuring the reliability of the linac operation. The feasibility of linac is substantiated on the basis of mastered or modified with a guarantee industrial equipment.  
slides icon Slides FRB04 [5.370 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRB04  
About • Received ※ 16 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 13 October 2021
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