Calculation of inductances and induced currents in cryogenic by-pass line for SIS100 particle accelerator at FAIR

• Autorzy: Tomków Łukasz , Trojanowski Stanisław , Ciszek Marian , Chorowski Maciej

Identyfikatory

DOI

10.24425/aee.2019.129336

• Języki publikacji: EN

Abstrakty

EN

Quality of electric current delivered to the magnets of a particle accelerator is essential for safety and reliability of its operation. Even small discrepancies strongly affect the properties of particle beams. One of the sources of the disturbances is the appearance of induced currents caused by the electromagnetic interactions between the elements of the machine. In this paper the calculations of induced currents in by-pass lines of a SIS100 particle accelerator are presented. In order to find the values of the currents the self-inductances and mutual inductances of the by-pass lines are found. Due to the complex geometry of the line, especially of Ω-shaped dilatations, the numerical approach was employed. The calculations show that the size of induced currents increases with the distance between the cables in an individual bus-bar. The maximum discrepancy of the magnetic field in a dipole magnet is found to be 7.7 μT. The decrease of distance between the cables allows one to obtain a discrepancy of 1.2 μT.

Słowa kluczowe

EN

line inductance; mutual inductance; induced currents; superconducting bus-bars; particle accelerators

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2019
• Tom: Vol. 68, nr 3
• Strony: 485--496
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wz.

Twórcy

autor

Tomków Łukasz

• Wrocław University of Technology wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
• Joint Institute for Nuclear Research Joliot-Curie 6, 141980 Dubna, Russia

autor

Trojanowski Stanisław

• Institute of Low Temperature and Structure Research ul. Okólna 2, 50-422 Wrocław, Poland

autor

Ciszek Marian

• Wrocław University of Technology wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland
• Institute of Low Temperature and Structure Research ul. Okólna 2, 50-422 Wrocław, Poland

autor

Chorowski Maciej

• Wrocław University of Technology wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland

Bibliografia

• [1] Outeiro M.T., Visintini R., Buja G., Considerations in designing power supplies for particle accelerators, IECON 2013 – 39th Annual Conference of the IEEE, Industrial Electronics Society, pp. 7076–7081 (2013).
• [2] Bertarelli A., Beam-induced damage mechanisms and their calculation, CERN Yellow Reports, vol. 2, pp. 159–227 (2016).
• [3] Kauschke M., Xiang Y., Schroeder C.H., Streicher B., Kollmus H., Cryogenic supply for accelerators and experiments at FAIR, American Institute of Physics Conference Proceedings, vol. 1573, iss. 1, pp. 1200–1205 (2014).
• [4] Kahle K., Power Converters and Power Quality, Proceedings of the CAS-CERN Accelerator School: Power Converters (2015).
• [5] Eisel T., Chorowski M., Iluk A., Kauschke M., Kollmus H., Malcher K., Poliński J., Streicher B., Local Cryogenics for the SIS100 at FAIR, IOP Conference Series: Materials Science and Engineering, vol. 101 (2015), DOI: 10.1088/1757-899X/101/1/012075.
• [6] Trojanowski S., Ciszek M., Chorowski M., Calculations and measurements of cross-talks in simulated and optimized current lines supplying magnets of SIS-100 accelerator with Ω-shaped dilatation loops, in Polish: Obliczenia i pomiary przesłuchów w symulowanych i optymalizowanych liniach prądowych zasilających magnesy akceleratora SIS100, z pętlami dylatacyjnymi w kształcie „omeg”, Wrocław University of Technology (unpublished) (2016).
• [7] Tomków Ł., Trojanowski S., Ciszek M., Chorowski M., Analysis of capacitance of a cryogenic by-pass line for SIS100 particle accelerator at FAIR, Archives of Electrical Engineering, vol. 67, no. 4 (2018).
• [8] Tomków Ł., Trojanowski S., Ciszek M., Chorowski M., Heat generation by eddy currents in a shell of superconducting bus-bars for SIS100 particle accelerator at FAIR, Archives of Electrical Engineering, vol. 66, no. 4, pp. 705–715 (2017).
• [9] Claycomb J., Applied Electromagnetics Using QuickField and Matlab, Jones and Bartlett Publishers, Boston (2010).
• [10] Trojanowski S., Ciszek M., Chorowski M., Measurements of capacitances and self-inductances of lines supplying superconducting magnets (project FAIR), in Polish: Pomiary pojemności oraz indukcyjności własnych w liniach zasilających magnesy nadprzewodnikowe (projekt FAIR), Wrocław University of Technology (unpublished) (2015).

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).