Modelling and design of permanent magnet multipoles for beam transport and focusing. II. Configuring the quad

Authors

  • Victor M. Amoskov D. V. Efremov Institute of Electrophysical Apparatus, 3, Doroga na Metallostroy, St Petersburg, 196641, Russian Federation https://orcid.org/0000-0001-9781-9116
  • Vyacheslav N. Vasiliev D. V. Efremov Institute of Electrophysical Apparatus, 3, Doroga na Metallostroy, St Petersburg, 196641, Russian Federation https://orcid.org/0000-0002-1218-6274
  • Elena I. Gapionok D. V. Efremov Institute of Electrophysical Apparatus, 3, Doroga na Metallostroy, St Petersburg, 196641, Russian Federation https://orcid.org/0000-0002-3839-8427
  • Georgy G. Gulbekian Joint Institute for Nuclear Research, 6, ul. Joliot-Curie, Moscow Region, Dubna, 141980, Russian Federation https://orcid.org/0009-0002-2361-6441
  • Nikolai S. Edamenko St Petersburg State University, 7-9, Universitetskaya nab., St Petersburg, 199034, Russian Federation https://orcid.org/0000-0003-3301-6802
  • Ivan A. Ivanenko Joint Institute for Nuclear Research, 6, ul. Joliot-Curie, Moscow Region, Dubna, 141980, Russian Federation
  • Nikolay Y. Kazarinov Joint Institute for Nuclear Research, 6, ul. Joliot-Curie, Moscow Region, Dubna, 141980, Russian Federation
  • Igor V. Kalagin Joint Institute for Nuclear Research, 6, ul. Joliot-Curie, Moscow Region, Dubna, 141980, Russian Federation https://orcid.org/0009-0000-0876-1072
  • Marina V. Kaparkova D. V. Efremov Institute of Electrophysical Apparatus, 3, Doroga na Metallostroy, St Petersburg, 196641, Russian Federation https://orcid.org/0000-0002-3489-5581
  • Vladimir P. Kukhtin D. V. Efremov Institute of Electrophysical Apparatus, 3, Doroga na Metallostroy, St Petersburg, 196641, Russian Federation https://orcid.org/0000-0001-6925-6141
  • Evgeny A. Lamzin D. V. Efremov Institute of Electrophysical Apparatus, 3, Doroga na Metallostroy, St Petersburg, 196641, Russian Federation https://orcid.org/0000-0002-6072-5711
  • Anatoly A. Makarov D. V. Efremov Institute of Electrophysical Apparatus, 3, Doroga na Metallostroy, St Petersburg, 196641, Russian Federation
  • Andrey N. Nezhentzev D. V. Efremov Institute of Electrophysical Apparatus, 3, Doroga na Metallostroy, St Petersburg, 196641, Russian Federation
  • Dmitrij A. Ovsyannikov St Petersburg State University, 7-9, Universitetskaya nab., St Petersburg, 199034, Russian Federation https://orcid.org/0000-0002-0829-2023
  • Dmitry A. Ovsyannikov (jr) St Petersburg State University of Industrial Technologies and Design, 18, Bolshaya Morskaya ul., St Petersburg, 191186, Russian Federation https://orcid.org/0000-0003-4191-8494
  • Nikolai F. Osipov Joint Institute for Nuclear Research, 6, ul. Joliot-Curie, Moscow Region, Dubna, 141980, Russian Federation
  • Igor Y. Rodin D. V. Efremov Institute of Electrophysical Apparatus, 3, Doroga na Metallostroy, St Petersburg, 196641, Russian Federation https://orcid.org/0000-0003-2595-7856
  • Sergey E. Sytchevsky St Petersburg State University, 7-9, Universitetskaya nab., St Petersburg, 199034, Russian Federation https://orcid.org/0000-0003-1527-4015
  • Alexey A. Firsov D. V. Efremov Institute of Electrophysical Apparatus, 3, Doroga na Metallostroy, St Petersburg, 196641, Russian Federation https://orcid.org/0000-0002-7846-8717
  • Nikolay A. Shatil D. V. Efremov Institute of Electrophysical Apparatus, 3, Doroga na Metallostroy, St Petersburg, 196641, Russian Federation https://orcid.org/0000-0001-8529-130X

DOI:

https://doi.org/10.21638/11701/spbu10.2022.402

Abstract

An optimized magnetic specification has been searched for a PM quadrupole constructed for the DC-140 cyclotron in JINR, Dubna. The field inhomogeneity should be reduced to come closer to an ideal distribution. The quad parameters should be determined with very high mechanical and magnetic precision in order to reach the specified gradient. Results of the analytic study based on a 2D model gave initial values for the PM blocks dimensions and orientations. To ensure stringent performance criteria, parametrized 2D and 3D models of the quad were built. These models were used to optimize the magnet configuration, analyze its sensitivity to various errors and derive parameter tolerances. Additional adjustment to suitable field quality is foreseen using results of a trajectory analysis and acceptance inspection. The design parameters for the best suited magnet configuration are presented and the performance criteria are defined. However, an electromagnetic analysis of the selected configuration has revealed that the relative field error adopted previously as the optimization criterion gives low accuracy estimate. Alternative estimations are proposed utilizing the field gradient error as the basic criterion to satisfy the constraint on the field inhomogeneity.

Keywords:

permanent magnet, quadrupole, beam transport, direct and inverse problems, simulation

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References

Литература

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Amoskov V. M., Belov A. V., Belyakov V. A., Gapionok E. I., Gribov Y. V., Kukhtin V. P., Lamzin E. A., Mita Y., Ovsyannikov A. D., Ovsyannikov D. A., Patisson L., Sytchevsky S. E., Zavadskiy S. V. Magnetic model MMTC-2.2 of ITER tokamak complex. Vestnik of Saint Petersburg University. Applied Mathematics. Computer Science. Control Processes, 2019, vol. 15, iss. 3, pp. 5-21. https://doi.org/10.21638/11702/spbu10.2019.301

Arslanova D., Firsov A., Kukhtin V., Lamzin E., Larionov M., Nezhentzev A., Ovsyannikov D., Rodin I., Shatil N., Sytchevsky S., Vasiliev V., Zaitsev A. Power-efficient low-stray field hybrid magnets for MAGLEV technology. Cybernenics and Physics, 2021, vol. 10, no. 3, pp. 117-121. https://doi.org/10.35470/2226-4116-2021-10-3-117-121

Published

2023-03-02

How to Cite

Amoskov, V. M., Vasiliev, V. N., Gapionok, E. I., Gulbekian, G. G., Edamenko, N. S., Ivanenko, I. A., … Shatil, N. A. (2023). Modelling and design of permanent magnet multipoles for beam transport and focusing. II. Configuring the quad. Vestnik of Saint Petersburg University. Applied Mathematics. Computer Science. Control Processes, 18(4), 454–472. https://doi.org/10.21638/11701/spbu10.2022.402

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Section

Applied Mathematics

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