RuPAC2021 - List of Keywords (cyclotron)

Paper	Title	Other Keywords	Page
MOPSA44	Conceptual Project of Proton Beam Lines in the Nuclear Medicine Project of the "Kurchatov Institute" - PNPI	proton, target, beam-transport, radiation	189
	D.A. Amerkanov, S.A. Artamonov, E.M. Ivanov, V.I. Maximov, G.A. Riabov, V.A. Tonkikh PNPI, Gatchina, Leningrad District, Russia
	The project of a nuclear medicine complex based on the isochronous cyclotron of negative hydrogen ions C - 80 is being developed at the National Research Center "Kurchatov Institute" - PNPI. The project provides for the design of a building, the creation of stations for the development of methods for obtaining new popular radionuclides and radiopharmaceuticals based on them. The commercial component is not excluded. The project also provides for the creation of a complex of proton therapy of the eyesight. For these purposes, the modernization of the beam extraction system of the cyclotron C-80 is planned: a project for the simultaneously two beams extraction systems are being developed. The one for the production of isotopes with an intensity up to 100 mkA and an energy of 40-80 MeV and the second - for ophthalmology with an energy of 70 MeV and intensity up to 10 mkA. The paper presents the calculation and layout of the beam transport lines to the target stations, the operation mode of the magnetic elements and beam envelopes. The method of the proton beam formation for ophthalmology and its parameters are described.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA44
About •	Received ※ 20 September 2021 — Accepted ※ 23 September 2021 — Issued ※ 15 October 2021
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MOPSA48	Simulation of the Electrostatic Deflector of DC140 Cyclotron	septum, beam-losses, extraction, ECR	202
	A.S. Zabanov, V.I. Lisov JINR/FLNR, Moscow region, Russia K. Gikal, G.G. Gulbekyan, I.V. Kalagin, N.Yu. Kazarinov, S.V. Mitrofanov, V.A. Semin JINR, Dubna, Moscow Region, Russia
	The main activities of Flerov Laboratory of Nuclear Reactions, following its name - are related to fundamental science, but in parallel a lot of efforts are paid for practical applications. Currently, work is underway to create an irradiation facility based on the DC140 cyclotron for applied research at FLNR. The beam transport system will have three experimental beam lines for testing of electronic components (avionics and space electronics) for radiation hardness, for ion-implantation nanotechnology and for radiation materials science. The DC140 cyclotron is intended to accelerate heavy ions with mass-to-charge ratio A/Z within interval from 5 to 8.25 up to two fixed energies 2.124 and 4.8 MeV per unit mass. 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 extraction system based on four main elements - electrostatic deflector, focusing magnetic channel, Permanent Magnet Quadrupole lens and steering magnet. The results of numerical simulation of the electrostatic deflector of DC140 cyclotron are presented in this this paper.
	Poster MOPSA48 [1.255 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA48
About •	Received ※ 22 August 2021 — Accepted ※ 20 September 2021 — Issued ※ 09 October 2021
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MOPSA49	DC140 Cyclotron, Trajectory Analysis of Beam Acceleration and Extraction	acceleration, 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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MOPSA50	Axial Injection System of DC140 Cyclotron of FLNR JINR	injection, ECR, radiation, solenoid	209
	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
	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.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA50
About •	Received ※ 27 August 2021 — Revised ※ 07 September 2021 — Accepted ※ 10 September 2021 — Issued ※ 23 October 2021
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MOPSA51	The Extraction System of DC140 Cyclotron	extraction, emittance, permanent-magnet, simulation	213
	V.I. Lisov, A.A. Protasov, A.S. Zabanov JINR/FLNR, Moscow region, Russia K. Gikal, G.G. Gulbekyan, I.A. Ivanenko, G.N. Ivanov, I.V. Kalagin, N.Yu. Kazarinov, S.V. Mitrofanov, N.F. Osipov, V.A. Semin JINR, Dubna, Moscow Region, Russia
	The main activities of Flerov Laboratory of Nuclear Reactions, following its name - are related to fundamental science, but, in parallel, plenty of efforts are paid for practical applications. For the moment continues the works under creating irradiation facility based on the cyclotron DC140 which will be dedicated machine for applied researches in FLNR. The beam transport system will have three experimental beam lines for testing of electronic components (avionics and space electronics) for radiation hardness, for ion-implantation nanotechnology and for radiation materials science. The DC140 cyclotron is intended for acceleration of heavy ions with mass-to-charge ratio A/Z within interval from 5 to 8.25 up to two fixed energies 2.124 and 4.8 MeV per unit mass. 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 following elements are used to extract the beam from the cyclotron: electrostatic deflector, focusing magnetic channel, Permanent Magnet Quadrupole lens and steering magnet. The design of the beam extraction system of DC140 cyclotron are presented in this report.
	Poster MOPSA51 [0.886 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA51
About •	Received ※ 30 August 2021 — Accepted ※ 20 September 2021 — Issued ※ 24 October 2021
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MOPSA52	Modeling of the Magnetic System of the Cyclotron of Multicharged Ions	acceleration, 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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MOPSA53	Focusing Properties of the Magnetic Structure of Isochronous Cyclotrons With Large Spiraling Angle of Pole Tips	focusing, ECR, factory, H-minus	219
	D.A. Amerkanov, S.A. Artamonov, E.M. Ivanov, G.A. Riabov, V.A. Tonkikh PNPI, Gatchina, Leningrad District, Russia
	Magnetic structures with a high spiraling angle of pole tips are used in superconducting cyclotrons, H⁻ ion cyclotrons, etc. and they have been investigated in a number of works. In connection with the design of an 80 MeV isochronous H⁻ cyclotron, such studies were continued and extended. The paper proposes a relatively simple approach for analyzing the projected spiral structure. The main conclusions can be formulated as follows. The introduction of spiraling makes it possible to significantly increase the vertical focusing, but in the central region at radii smaller than the gap in the hills, the structure with high spiraling angle becomes ineffective and can lead to a decrease in focusing. Each radius can be associated with a limiting spirality angle, above which spiraling leads to a resultant decrease in vertical focusing. The spiraling of the magnetic field does not coincide with the geometric spiraling of the pole tips, which should be taken into account when designing the cyclotron structure. The developed technique can be useful for a quick analysis of various options and will reduce the amount of time-consuming calculations by using 3D programs.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA53
About •	Received ※ 07 September 2021 — Accepted ※ 10 September 2021 — Issued ※ 15 October 2021
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TUPSB36	High Intensity Calcium, Chromium and Titanium Ion Beams from the Permanent Magnet ECR Ion Source DECRIS-PM	ECR, ion-source, experiment, ECRIS	303
	D.K. Pugachev, S.L. Bogomolov, A.E. Bondarchenko, A.A. Efremov, K. Gikal, K.I. Kuzmenkov, V.N. Loginov, V. Mironov JINR, Dubna, Moscow Region, Russia A.A. Protasov JINR/FLNR, Moscow region, Russia
	The first experiment at the Super Heavy Elements Factory (SHE) was launched at the end of 2020. The result of the experiment with a calcium ion beam and an Americium target is more than 100 events of the synthesis of Moscovium. The last two years have shown good capabilities of the Factory. These results allow us to start preparing for the synthesis of SHE with atomic number >118. For this experiment, we have to use heavier ion beams, such as titanium and chromium. The article describes the method, technique, and last experimental results on the production of metal ion beams such as 48Ca, 48Ti, 52Cr, and 54Cr ion beams at the DC-280 cyclotron from the DECRIS-PM ion source.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB36
About •	Received ※ 13 September 2021 — Revised ※ 25 September 2021 — Accepted ※ 29 September 2021 — Issued ※ 05 October 2021
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FRA01	Peculiarities of Producing 48Ca, 48Ti, 52Cr Beams at the DC-280 Cyclotron	ECR, experiment, acceleration, 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 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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FRA02	Cyclotron of Multicharged Ions	injection, vacuum, resonance, radiation	96
	Yu.K. Osina, A. Akimova, A.V. Galchuck, Yu.N. Gavrish, S.V. Grigorenko, V.I. Grigoriev, M.L. Klopenkov, R.M. Klopenkov, L.E. Korolev, K.A. Kravchuk, A.N. Kuzhlev, I.I. Mezhov, V.G. Mudrolyubov, K.E. Smirnov, Yu.I. Stogov, S.S. Tsygankov, M.V. Usanova NIIEFA, St. Petersburg, Russia
	The JSC "NIIEFA" is designing a cyclotron system intended to accelerate ions with a mass-to-charge ratio of 3-7 in the energy range of 7.5-15 MeV per nucleon. The variety of ions, the range of changes in their energy, and the intensity of the beams provide conditions for a wide range of basic and applied research, including for solving a number of technological tasks. The cyclotron electromagnet has an H-shaped design with a pole diameter of 4 meters and a four-sector mag-netic structure. In the basic mode, the dependence of the induction on the radius corresponding to the isochronous motion is realized by turning on the main coil only through the shape of the central plugs, sector side plates, and sector chamfers. For other modes of isochronous ac-celeration, the current in the main coil is changed and cor-rection coils are tuned. The resonance system consists of two resonators with an operating frequency adjustable from 13 to 20 MHz. The final stage of the RF generator is installed close to the resonator and is connected to it by a conductive power input device. The external injection system generates and separates ions with a given A/z ratio. The injection energy is chosen such that the Larmor radius is constant, which allows us-ing an inflector of unchanged geometry for the entire list of ions. The transportation system forms beams of accelerated ions with specified parameters and delivers them to sample irradiation devices. Computer control of the cyclotron is provided.
	Slides FRA02 [11.588 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRA02
About •	Received ※ 24 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 20 October 2021
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FRA04	The Experimental Research of Cyclotron DC-280 Beam Parameters	controls, experiment, diagnostics, electron	102
	V.A. Semin, K. Gikal, I.V. Kalagin, N.Yu. Kazarinov, V.I. Mironov, S.V. Mitrofanov, Yu.G. Teterev JINR, Dubna, Moscow Region, Russia A. Issatov, L.A. Pavlov, A.A. Protasov JINR/FLNR, Moscow region, Russia
	The DC-280 is the high intensity cyclotron for Super Heavy Elements Factory in FLNR JINR. It was designed for production of accelerated ions beam with intensity up 10 pµA to energy in range 4 - 8 MeV/n. The beam power is up 3,5 kW. The diagnostics elements shall be capable of withstanding this power. Moreover such intensity beam required continuous control for avoid of equipment damage. Special diagnostic equipment were designed, manufactured and commissioning. During the design the calculation of thermal loads was made. Some of them were tested before installation on cyclotron. Diagnostic elements used on DC-280 cyclotron are described in this paper. The special Faraday cup was designed for beam cur-rent measurement. The moving inner probe and multylamellar probe are inside the cyclotron. The Scanning two-dimension ionization profile monitor was produced for space distribution analysis of accelerated high intensity beam. Inner Pickup electrode system with special elec-tronic was created for beam phase moving analysis. Time of flight system based on two pick-up electrodes for energy measured was placed in transport channel. These and over diagnostic system were commissioned and tested. The results present in report.
	Slides FRA04 [16.527 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRA04
About •	Received ※ 29 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 13 October 2021 — Issued ※ 22 October 2021
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FRA05	Cyclotron System C-250	proton, resonance, radiation, controls	105
	K.E. Smirnov, A.V. Galchuck, Yu.N. Gavrish, S.V. Grigorenko, V.I. Grigoriev, R.M. Klopenkov, L.E. Korolev, K.A. Kravchuk, A.N. Kuzhlev, I.I. Mezhov, V.G. Mudrolyubov, Yu.K. Osina, Yu.I. Stogov, M.V. Usanova NIIEFA, St. Petersburg, Russia
	JSC "NIIEFA" is designing a cyclotron system that gen-erates intensive proton beams with final energy in the range of 30-250 MeV. We have adopted a non-standard technical solution: at the energy of less than 125 MeV negative hydrogen ions are accelerated with the extrac-tion of protons by the stripping device; at higher energies protons are accelerated, and the beam is extracted by a deflector and a magnetic channel. The isochronous de-pendence of the magnetic field on the radius for different final energies is provided by changing the current in the main coil and tuning the correction coils. The cyclotron electromagnet has an H-shaped design with a pole diameter of 4 meters, a four-sector magnetic structure, and high spirality sectors. The dees of the reso-nance system are formed by delta electrodes and placed in the opposite valleys; stems are brought outwards through holes in the valleys. The operating frequency range is 24-33.2 MHz. The power of the RF generator is 60 kW. The cyclotron complex is equipped with a branched beam transport system and target devices for applied re-search on the radiation resistance of materials. Computer control of the cyclotron and its associated systems is provided.
	Slides FRA05 [6.105 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRA05
About •	Received ※ 29 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 19 October 2021
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Paper

Title

Other Keywords

Page

MOPSA44

Conceptual Project of Proton Beam Lines in the Nuclear Medicine Project of the "Kurchatov Institute" - PNPI

proton, target, beam-transport, radiation

189

D.A. Amerkanov, S.A. Artamonov, E.M. Ivanov, V.I. Maximov, G.A. Riabov, V.A. Tonkikh
PNPI, Gatchina, Leningrad District, Russia

The project of a nuclear medicine complex based on the isochronous cyclotron of negative hydrogen ions C - 80 is being developed at the National Research Center "Kurchatov Institute" - PNPI. The project provides for the design of a building, the creation of stations for the development of methods for obtaining new popular radionuclides and radiopharmaceuticals based on them. The commercial component is not excluded. The project also provides for the creation of a complex of proton therapy of the eyesight. For these purposes, the modernization of the beam extraction system of the cyclotron C-80 is planned: a project for the simultaneously two beams extraction systems are being developed. The one for the production of isotopes with an intensity up to 100 mkA and an energy of 40-80 MeV and the second - for ophthalmology with an energy of 70 MeV and intensity up to 10 mkA. The paper presents the calculation and layout of the beam transport lines to the target stations, the operation mode of the magnetic elements and beam envelopes. The method of the proton beam formation for ophthalmology and its parameters are described.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA44

About •

Received ※ 20 September 2021 — Accepted ※ 23 September 2021 — Issued ※ 15 October 2021

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MOPSA48

Simulation of the Electrostatic Deflector of DC140 Cyclotron

septum, beam-losses, extraction, ECR

202

A.S. Zabanov, V.I. Lisov
JINR/FLNR, Moscow region, Russia
K. Gikal, G.G. Gulbekyan, I.V. Kalagin, N.Yu. Kazarinov, S.V. Mitrofanov, V.A. Semin
JINR, Dubna, Moscow Region, Russia

The main activities of Flerov Laboratory of Nuclear Reactions, following its name - are related to fundamental science, but in parallel a lot of efforts are paid for practical applications. Currently, work is underway to create an irradiation facility based on the DC140 cyclotron for applied research at FLNR. The beam transport system will have three experimental beam lines for testing of electronic components (avionics and space electronics) for radiation hardness, for ion-implantation nanotechnology and for radiation materials science. The DC140 cyclotron is intended to accelerate heavy ions with mass-to-charge ratio A/Z within interval from 5 to 8.25 up to two fixed energies 2.124 and 4.8 MeV per unit mass. 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 extraction system based on four main elements - electrostatic deflector, focusing magnetic channel, Permanent Magnet Quadrupole lens and steering magnet. The results of numerical simulation of the electrostatic deflector of DC140 cyclotron are presented in this this paper.

Poster MOPSA48 [1.255 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA48

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Received ※ 22 August 2021 — Accepted ※ 20 September 2021 — Issued ※ 09 October 2021

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MOPSA49

DC140 Cyclotron, Trajectory Analysis of Beam Acceleration and Extraction

acceleration, 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

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOPSA50

Axial Injection System of DC140 Cyclotron of FLNR JINR

injection, ECR, radiation, solenoid

209

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

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.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA50

About •

Received ※ 27 August 2021 — Revised ※ 07 September 2021 — Accepted ※ 10 September 2021 — Issued ※ 23 October 2021

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOPSA51

The Extraction System of DC140 Cyclotron

extraction, emittance, permanent-magnet, simulation

213

V.I. Lisov, A.A. Protasov, A.S. Zabanov
JINR/FLNR, Moscow region, Russia
K. Gikal, G.G. Gulbekyan, I.A. Ivanenko, G.N. Ivanov, I.V. Kalagin, N.Yu. Kazarinov, S.V. Mitrofanov, N.F. Osipov, V.A. Semin
JINR, Dubna, Moscow Region, Russia

The main activities of Flerov Laboratory of Nuclear Reactions, following its name - are related to fundamental science, but, in parallel, plenty of efforts are paid for practical applications. For the moment continues the works under creating irradiation facility based on the cyclotron DC140 which will be dedicated machine for applied researches in FLNR. The beam transport system will have three experimental beam lines for testing of electronic components (avionics and space electronics) for radiation hardness, for ion-implantation nanotechnology and for radiation materials science. The DC140 cyclotron is intended for acceleration of heavy ions with mass-to-charge ratio A/Z within interval from 5 to 8.25 up to two fixed energies 2.124 and 4.8 MeV per unit mass. 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 following elements are used to extract the beam from the cyclotron: electrostatic deflector, focusing magnetic channel, Permanent Magnet Quadrupole lens and steering magnet. The design of the beam extraction system of DC140 cyclotron are presented in this report.

Poster MOPSA51 [0.886 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA51

About •

Received ※ 30 August 2021 — Accepted ※ 20 September 2021 — Issued ※ 24 October 2021

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MOPSA52

Modeling of the Magnetic System of the Cyclotron of Multicharged Ions

acceleration, 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.

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA52

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Received ※ 25 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 18 October 2021

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MOPSA53

Focusing Properties of the Magnetic Structure of Isochronous Cyclotrons With Large Spiraling Angle of Pole Tips

focusing, ECR, factory, H-minus

219

D.A. Amerkanov, S.A. Artamonov, E.M. Ivanov, G.A. Riabov, V.A. Tonkikh
PNPI, Gatchina, Leningrad District, Russia

Magnetic structures with a high spiraling angle of pole tips are used in superconducting cyclotrons, H⁻ ion cyclotrons, etc. and they have been investigated in a number of works. In connection with the design of an 80 MeV isochronous H⁻ cyclotron, such studies were continued and extended. The paper proposes a relatively simple approach for analyzing the projected spiral structure. The main conclusions can be formulated as follows. The introduction of spiraling makes it possible to significantly increase the vertical focusing, but in the central region at radii smaller than the gap in the hills, the structure with high spiraling angle becomes ineffective and can lead to a decrease in focusing. Each radius can be associated with a limiting spirality angle, above which spiraling leads to a resultant decrease in vertical focusing. The spiraling of the magnetic field does not coincide with the geometric spiraling of the pole tips, which should be taken into account when designing the cyclotron structure. The developed technique can be useful for a quick analysis of various options and will reduce the amount of time-consuming calculations by using 3D programs.

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-MOPSA53

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Received ※ 07 September 2021 — Accepted ※ 10 September 2021 — Issued ※ 15 October 2021

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TUPSB36

High Intensity Calcium, Chromium and Titanium Ion Beams from the Permanent Magnet ECR Ion Source DECRIS-PM

ECR, ion-source, experiment, ECRIS

303

D.K. Pugachev, S.L. Bogomolov, A.E. Bondarchenko, A.A. Efremov, K. Gikal, K.I. Kuzmenkov, V.N. Loginov, V. Mironov
JINR, Dubna, Moscow Region, Russia
A.A. Protasov
JINR/FLNR, Moscow region, Russia

The first experiment at the Super Heavy Elements Factory (SHE) was launched at the end of 2020. The result of the experiment with a calcium ion beam and an Americium target is more than 100 events of the synthesis of Moscovium. The last two years have shown good capabilities of the Factory. These results allow us to start preparing for the synthesis of SHE with atomic number >118. For this experiment, we have to use heavier ion beams, such as titanium and chromium. The article describes the method, technique, and last experimental results on the production of metal ion beams such as 48Ca, 48Ti, 52Cr, and 54Cr ion beams at the DC-280 cyclotron from the DECRIS-PM ion source.

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB36

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Received ※ 13 September 2021 — Revised ※ 25 September 2021 — Accepted ※ 29 September 2021 — Issued ※ 05 October 2021

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FRA01

Peculiarities of Producing 48Ca, 48Ti, 52Cr Beams at the DC-280 Cyclotron

ECR, experiment, acceleration, 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 FRA01 [9.228 MB]

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRA01

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Received ※ 18 September 2021 — Revised ※ 25 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 16 October 2021

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FRA02

Cyclotron of Multicharged Ions

injection, vacuum, resonance, radiation

96

Yu.K. Osina, A. Akimova, A.V. Galchuck, Yu.N. Gavrish, S.V. Grigorenko, V.I. Grigoriev, M.L. Klopenkov, R.M. Klopenkov, L.E. Korolev, K.A. Kravchuk, A.N. Kuzhlev, I.I. Mezhov, V.G. Mudrolyubov, K.E. Smirnov, Yu.I. Stogov, S.S. Tsygankov, M.V. Usanova
NIIEFA, St. Petersburg, Russia

The JSC "NIIEFA" is designing a cyclotron system intended to accelerate ions with a mass-to-charge ratio of 3-7 in the energy range of 7.5-15 MeV per nucleon. The variety of ions, the range of changes in their energy, and the intensity of the beams provide conditions for a wide range of basic and applied research, including for solving a number of technological tasks. The cyclotron electromagnet has an H-shaped design with a pole diameter of 4 meters and a four-sector mag-netic structure. In the basic mode, the dependence of the induction on the radius corresponding to the isochronous motion is realized by turning on the main coil only through the shape of the central plugs, sector side plates, and sector chamfers. For other modes of isochronous ac-celeration, the current in the main coil is changed and cor-rection coils are tuned. The resonance system consists of two resonators with an operating frequency adjustable from 13 to 20 MHz. The final stage of the RF generator is installed close to the resonator and is connected to it by a conductive power input device. The external injection system generates and separates ions with a given A/z ratio. The injection energy is chosen such that the Larmor radius is constant, which allows us-ing an inflector of unchanged geometry for the entire list of ions. The transportation system forms beams of accelerated ions with specified parameters and delivers them to sample irradiation devices. Computer control of the cyclotron is provided.

Slides FRA02 [11.588 MB]

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRA02

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Received ※ 24 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 20 October 2021

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FRA04

The Experimental Research of Cyclotron DC-280 Beam Parameters

controls, experiment, diagnostics, electron

102

V.A. Semin, K. Gikal, I.V. Kalagin, N.Yu. Kazarinov, V.I. Mironov, S.V. Mitrofanov, Yu.G. Teterev
JINR, Dubna, Moscow Region, Russia
A. Issatov, L.A. Pavlov, A.A. Protasov
JINR/FLNR, Moscow region, Russia

The DC-280 is the high intensity cyclotron for Super Heavy Elements Factory in FLNR JINR. It was designed for production of accelerated ions beam with intensity up 10 pµA to energy in range 4 - 8 MeV/n. The beam power is up 3,5 kW. The diagnostics elements shall be capable of withstanding this power. Moreover such intensity beam required continuous control for avoid of equipment damage. Special diagnostic equipment were designed, manufactured and commissioning. During the design the calculation of thermal loads was made. Some of them were tested before installation on cyclotron. Diagnostic elements used on DC-280 cyclotron are described in this paper. The special Faraday cup was designed for beam cur-rent measurement. The moving inner probe and multylamellar probe are inside the cyclotron. The Scanning two-dimension ionization profile monitor was produced for space distribution analysis of accelerated high intensity beam. Inner Pickup electrode system with special elec-tronic was created for beam phase moving analysis. Time of flight system based on two pick-up electrodes for energy measured was placed in transport channel. These and over diagnostic system were commissioned and tested. The results present in report.

Slides FRA04 [16.527 MB]

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRA04

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Received ※ 29 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 13 October 2021 — Issued ※ 22 October 2021

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FRA05

Cyclotron System C-250

proton, resonance, radiation, controls

105

K.E. Smirnov, A.V. Galchuck, Yu.N. Gavrish, S.V. Grigorenko, V.I. Grigoriev, R.M. Klopenkov, L.E. Korolev, K.A. Kravchuk, A.N. Kuzhlev, I.I. Mezhov, V.G. Mudrolyubov, Yu.K. Osina, Yu.I. Stogov, M.V. Usanova
NIIEFA, St. Petersburg, Russia

JSC "NIIEFA" is designing a cyclotron system that gen-erates intensive proton beams with final energy in the range of 30-250 MeV. We have adopted a non-standard technical solution: at the energy of less than 125 MeV negative hydrogen ions are accelerated with the extrac-tion of protons by the stripping device; at higher energies protons are accelerated, and the beam is extracted by a deflector and a magnetic channel. The isochronous de-pendence of the magnetic field on the radius for different final energies is provided by changing the current in the main coil and tuning the correction coils. The cyclotron electromagnet has an H-shaped design with a pole diameter of 4 meters, a four-sector magnetic structure, and high spirality sectors. The dees of the reso-nance system are formed by delta electrodes and placed in the opposite valleys; stems are brought outwards through holes in the valleys. The operating frequency range is 24-33.2 MHz. The power of the RF generator is 60 kW. The cyclotron complex is equipped with a branched beam transport system and target devices for applied re-search on the radiation resistance of materials. Computer control of the cyclotron and its associated systems is provided.

Slides FRA05 [6.105 MB]

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reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-FRA05

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Received ※ 29 September 2021 — Revised ※ 30 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 19 October 2021

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