RuPAC2021 - List of Authors (Riabov, G.A.)

Paper	Title	Page
MOPSA44	Conceptual Project of Proton Beam Lines in the Nuclear Medicine Project of the "Kurchatov Institute" - PNPI	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
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOPSA53	Focusing Properties of the Magnetic Structure of Isochronous Cyclotrons With Large Spiraling Angle of Pole Tips	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
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPSB16	Calculation and Optimization of High-Energy Beam Transfer Lines by the Monte Carlo Method	262
	D.A. Amerkanov, E.M. Ivanov, G.A. Riabov, V.A. Tonkikh PNPI, Gatchina, Leningrad District, Russia
	The calculation of high-energy beam lines consists of tracing of the proton beam trajectories along the transport channel from the source. The PROTON_MK program code was developed to carry out such calculations using the Monte Carlo method. The beam from the accelerator is introduced in the form of a multivariate Gaussian distribution in x,x’,z,z’,dp/p phase space. In the case when an absorber (absorber, air section, window in the channel, etc.) is installed in the transport channel the beam parameters after the absorber are calculated using the GEANT4. The output file of this code can be used as input for the program. The program allows calculation of any beam parameters - intensity, spatial or phase density, energy distribution, etc. The program includes a block for the optimization of beam parameters presented in a functional form. Random search method with learning for search correction based on analysis of intermediate results (so-called statistical gradient method) is used for obtaining the global maximum of a function of many variables. The program has been tested in calculations of the beam transport lines for IC-80 cyclotron and for the development of the beam line for ophthalmology.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB16
About •	Received ※ 21 September 2021 — Revised ※ 22 September 2021 — Accepted ※ 23 September 2021 — Issued ※ 28 September 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

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

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

Cite •

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

MOPSA53

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

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

Cite •

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

TUPSB16

Calculation and Optimization of High-Energy Beam Transfer Lines by the Monte Carlo Method

262

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

The calculation of high-energy beam lines consists of tracing of the proton beam trajectories along the transport channel from the source. The PROTON_MK program code was developed to carry out such calculations using the Monte Carlo method. The beam from the accelerator is introduced in the form of a multivariate Gaussian distribution in x,x’,z,z’,dp/p phase space. In the case when an absorber (absorber, air section, window in the channel, etc.) is installed in the transport channel the beam parameters after the absorber are calculated using the GEANT4. The output file of this code can be used as input for the program. The program allows calculation of any beam parameters - intensity, spatial or phase density, energy distribution, etc. The program includes a block for the optimization of beam parameters presented in a functional form. Random search method with learning for search correction based on analysis of intermediate results (so-called statistical gradient method) is used for obtaining the global maximum of a function of many variables. The program has been tested in calculations of the beam transport lines for IC-80 cyclotron and for the development of the beam line for ophthalmology.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB16

About •

Received ※ 21 September 2021 — Revised ※ 22 September 2021 — Accepted ※ 23 September 2021 — Issued ※ 28 September 2021

Cite •

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