RuPAC2021 - List of Authors (Gapionok, E.I.)

Paper	Title	Page
TUPSB35	3D Simulation Study and Optimization of Magnetic System of DECRIS Ion Source with the Pumping Frequency 28 GHz	300
	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
	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.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB35
About •	Received ※ 28 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 04 October 2021 — Issued ※ 18 October 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPSC16	Numerical Research of Design Solutions for the Bending Magnets of the Electron Beam Facility GESA-1M	376
	N.I. Kazachenko, E.I. Gapionok, V.P. Kukhtin, I.Yu. Rodin, K.I. Tkachenko NIIEFA, St. Petersburg, Russia D.A. Ovsyannikov, S.E. Sytchevsky Saint Petersburg State University, Saint Petersburg, Russia
	Comparative simulations of magnet configurations have been performed searching for the optimum design of bending magnets for the intense pulsed electron beam facility GESA-1M. GESA-1M is used for improvement of material surface properties and is capable to generate a 120 kV, 10 A/cm², 50 mks electron beam with the diameter of 10 cm. One of specific concerns is to prevent the beam path from contamination withμparticles of treated materials. To overcome this problem a system of bending magnets is used. The beam trajectory through electric and magnetic fields was simulated for three candidate configurations of the bending magnets. A comparison was focused on the expected power density and divergence angle at the target. The most efficient concept was found to be two pairs of coils arranged orthogonally to each other. This configuration produces highly uniform distribution of the current density at the target, the divergence angle being as low as several degrees. An important advantage is that the initial beam power can be intensified by a 20% at the target.
DOI •	reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC16
About •	Received ※ 28 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 19 October 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

3D Simulation Study and Optimization of Magnetic System of DECRIS Ion Source with the Pumping Frequency 28 GHz

300

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

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.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB35

About •

Received ※ 28 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 04 October 2021 — Issued ※ 18 October 2021

Cite •

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

WEPSC16

Numerical Research of Design Solutions for the Bending Magnets of the Electron Beam Facility GESA-1M

376

N.I. Kazachenko, E.I. Gapionok, V.P. Kukhtin, I.Yu. Rodin, K.I. Tkachenko
NIIEFA, St. Petersburg, Russia
D.A. Ovsyannikov, S.E. Sytchevsky
Saint Petersburg State University, Saint Petersburg, Russia

Comparative simulations of magnet configurations have been performed searching for the optimum design of bending magnets for the intense pulsed electron beam facility GESA-1M. GESA-1M is used for improvement of material surface properties and is capable to generate a 120 kV, 10 A/cm², 50 mks electron beam with the diameter of 10 cm. One of specific concerns is to prevent the beam path from contamination withμparticles of treated materials. To overcome this problem a system of bending magnets is used. The beam trajectory through electric and magnetic fields was simulated for three candidate configurations of the bending magnets. A comparison was focused on the expected power density and divergence angle at the target. The most efficient concept was found to be two pairs of coils arranged orthogonally to each other. This configuration produces highly uniform distribution of the current density at the target, the divergence angle being as low as several degrees. An important advantage is that the initial beam power can be intensified by a 20% at the target.

DOI •

reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC16

About •

Received ※ 28 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 19 October 2021

Cite •

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