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MOPSA50 |
Axial Injection System of DC140 Cyclotron of FLNR JINR |
cyclotron, injection, ECR, radiation |
209 |
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- N.Yu. Kazarinov, V. Bekhterev, G.G. Gulbekyan, I.A. Ivanenko, I.V. Kalagin, S.V. Mitrofanov, N.F. Osipov, V.A. Semin
JINR, Dubna, Moscow Region, Russia
- V.I. Lisov
JINR/FLNR, Moscow region, Russia
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Flerov Laboratory of Nuclear Reaction of Joint Institute for Nuclear Research continues the works under creating of FLNR JINR Irradiation Facility based on the cyclotron DC140. The facility will have three experimental beam lines for SEE testing of microchips, for production of track membranes and for solving of applied physics problems. The injection into cyclotron will be realized from the external room temperature 18 GHz ECR ion source. The systems of DC140 cyclotron such as axial injection, main magnet, RF- and extraction systems and beam lines are the reconstruction of the DC72 cyclotron ones. The acceleration in DC140 cyclotron is carried out for two values of harmonic number h = 2,3 of heavy ions with mass-to-charge ratio A/Z within two intervals 5 - 5.5 and 7.5 - 8.25 up to two fixed energies 2.124 and 4.8 MeV per unit mass, correspondingly. The intensity of the accelerated ions will be about 1 pmcA for light ions (A<86) and about 0.1 pmcA for heavier ions (A>132). The design of the axial injection system of the DC140 cyclotron is presented in this report.
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DOI • |
reference for this paper
※ doi:10.18429/JACoW-RuPAC2021-MOPSA50
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About • |
Received ※ 27 August 2021 — Revised ※ 07 September 2021 — Accepted ※ 10 September 2021 — Issued ※ 23 October 2021 |
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TUB04 |
Development of the Electron Cooling System for NICA Collider |
electron, gun, high-voltage, collider |
48 |
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- M.I. Bryzgunov, A.M. Batrakov, E.A. Bekhtenev, O.V. Belikov, A.V. Bubley, V.A. Chekavinskiy, A.P. Denisov, M.G. Fedotov, A.D. Goncharov, K. Gorchakov, V.C. Gosteyev, I.A. Gusev, I.V. Ilyin, A.V. Ivanov, G.V. Karpov, M.N. Kondaurov, N.S. Kremnev, V.M. Panasyuk, V.V. Parkhomchuk, D.N. Pureskin, A.A. Putmakov, V.B. Reva, D.V. Senkov, K.S. Shtro, D.N. Skorobogatov, R.V. Vakhrushev, A.A. Zharikov
BINP SB RAS, Novosibirsk, Russia
- E.A. Bekhtenev, A.V. Ivanov, N.S. Kremnev, V.B. Reva
NSU, Novosibirsk, Russia
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The high voltage electron cooling system for the NICA collider is now under development in the Budker Institute of Nuclear Physics (Russia). The aim of the cooler is to increase ion beams intencity during accumulation and to decrease both longitudinal and transverse emmitances of colliding beams during experiment in order to increase luminosity. Status of its development and results of tests of the cooler elements are described in the article.
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Slides TUB04 [16.028 MB]
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DOI • |
reference for this paper
※ doi:10.18429/JACoW-RuPAC2021-TUB04
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About • |
Received ※ 04 October 2021 — Accepted ※ 09 October 2021 — Issued ※ 24 October 2021 |
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TUPSB11 |
Numerical Investigation of the Robustness of Spin-Navigator Polarization Control Method in a Spin-Transparent Storage Ring |
polarization, detector, lattice, controls |
254 |
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- A.A. Melnikov, A.E. Aksentyev, V. Senichev
RAS/INR, Moscow, Russia
- A.E. Aksentyev
MEPhI, Moscow, Russia
- V. Ladygin
JINR, Dubna, Moscow Region, Russia
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The robustness of spin-navigator based method for manipulating the beam polarization axis has been investigated with respect to bend magnet installation errors. Toward that end, variation of the invariant spin axis components along the beamline of an imperfect storage ring operating in the spin-transparent mode has been estimated. The beam polarization vector behavior in the given lattice has been investigated. Conclusions are made regarding the feasibility of using spin navigator solenoids for defining the beam polarization axis in the detector region.
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Poster TUPSB11 [0.536 MB]
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DOI • |
reference for this paper
※ doi:10.18429/JACoW-RuPAC2021-TUPSB11
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About • |
Received ※ 12 September 2021 — Revised ※ 13 September 2021 — Accepted ※ 20 September 2021 — Issued ※ 11 October 2021 |
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TUPSB35 |
3D Simulation Study and Optimization of Magnetic System of DECRIS Ion Source with the Pumping Frequency 28 GHz |
sextupole, ECR, ion-source, operation |
300 |
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- V.M. Amoskov, E.I. Gapionok, V.P. Kukhtin, A.N. Labusov, E.A. Lamzin, A. Makarov, I.Yu. Rodin, A.V. Safonov, N. Shatil, D.B. Stepanov, E.R. Zapretilina
NIIEFA, St. Petersburg, Russia
- S.L. Bogomolov, A.A. Efremov
JINR, Dubna, Moscow Region, Russia
- S.E. Sytchevsky
Saint Petersburg State University, Saint Petersburg, Russia
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A superconducting magnet system for a 28 GHz ECR ion source DECRIS-SC2 was studied in order to select its parameters and optimize performance. Parametric magnetic models were performed for two design configurations, conventional ("sextupole-in-solenoid") and reversed ("solenoid-in-sextupole"). In the "sextupole-in-solenoid" design the racetrack coils of the sextupole magnet used for radial plasma confinement are located inside the solenoids producing the axial field. In the "solenoid-in-sextupole" design the coils arrangement is reversed. For both configurations, electromagnetic effect the booster and the steel poles on the magnet performance was investigated from the point of view critical parameters of the system ¿ currents, fields, and forces. Results of the parametric computations were used to optimize the geometry and sizes of the magnet as well as the magnetic shield, the booster, and the poles. For better reliability and validation of the result, computations were performed with two magnetostatic codes, KOMPOT and KLONDIKE, utilizing the differential and integral formulations, respectively. A comparison of the obtained parameters was used to select the candidate magnet configuration for further design and manufacture.
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DOI • |
reference for this paper
※ doi:10.18429/JACoW-RuPAC2021-TUPSB35
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About • |
Received ※ 28 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 04 October 2021 — Issued ※ 18 October 2021 |
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TUPSB38 |
Magnetic System With Variable Characteristics for a 2.45 GHz ECRIS |
ECR, plasma, ion-source, operation |
310 |
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- M.S. Dmitriyev, K.G. Artamonov, O.A. Ivanov, M.I. Zhigailova
MEPhI, Moscow, Russia
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Particle sources might be considered as an incredibly significant part of the accelerator system. Nowadays high-energy acceleration requires the types of ion sources implemented to produce beams of ions and protons of high energy and intensity. The current study is aimed to con-sider the design of the magnetic system of ECRIS with the operating frequency of 2.45 GHz for producing pro-tons and double-charged helium ions. The numerical simulation of the magnetic system was made by the Finite Element Method. The adjustment of the axial distribution of the magnetic field inside the plasma chamber is realized by shifting the ring magnets. Additional tuning of the axial magnetic field is presented by solenoids introduced for providing the required Binj and Bext adjustment as well as the Bmin control on the axis. For the simplification of the structure the alternating design of the ring magnets with trapezoidal components was considered. Furthermore, the magnetic system allows operating in both single-charged and multiply charged ions generation modes, thus the microwave source mode and the ECR mode are realizable for this configuration. Therefore, the study enables a better understanding of the feasibility of the ECRIS magnetic system with variable characteristics.
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DOI • |
reference for this paper
※ doi:10.18429/JACoW-RuPAC2021-TUPSB38
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About • |
Received ※ 29 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 19 October 2021 |
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