Analysis of capacitance of a cryogenic by-pass line for SIS100 particle accelerator at FAIR

• Autorzy: Tomków Ł. , Trojanowski S. , Ciszek M. , Chorowski M.

Identyfikatory

DOI

10.24425/aee.2018.124741

• Języki publikacji: EN

Abstrakty

EN

Safety and operation efficiency of the particle accelerators strongly depend on the quality of the supplied electric current and is affected by the electric properties of all elements of the circuit. In this paper the capacitance of the superconducting bus-bars applied in the cryogenic by-pass line for the SIS100 particle accelerator at FAIR is analysed. The unit capacitance of the bus-bars is calculated numerically and found experimentally. A 2D numerical model of a cross-section of the cable is applied. The capacitance is found with three methods. The stored energy, electric displacement field and charge gathered on the surfaces of the device are calculated and analysed. The obtained values are consistent. Experimental measurements are performed using the resonance method. The measuring system is undamped using a negative conductance converter. Small discrepancies are observed between numerical and experimental results. The obtained values are within the requirements of the accelerator design.

Słowa kluczowe

EN

line capacitance; superconducting bus-bars; particle accelerators

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2018
• Tom: Vol. 67, nr 4
• Strony: 803--814
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wz.

Twórcy

autor

Tomków Ł.

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

autor

Trojanowski S.

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

autor

Ciszek M.

• 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 M.

• 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 – 39-th Annual Conference of the IEEE, Industrial Electronics Society, 2013, DOI: 10.1109/IECON.2013.6700307.
• [2] Bertarelli A., Beam-induced damage mechanisms and their calculation, CERN Yellow Reports, vol. 2, no. 0, p. 159 (2016).
• [3] Kahle K., Power Converters and Power Quality, Proceedings of the CAS-CERN Accelerator School: Power Converters (2015).
• [4] 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.
• [5] 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).
• [6] FAIR collaboration, FAIR Baseline Technical Report, vol. 1, March (2006).
• [7] Stafiniak A., Szwangruber P., FreislebenW., Floch E., Electrical integrity and its protection for reliable operation of superconducting machines, Physics Procedia, vol. 67, pp. 1106–1111 (2015).
• [8] Trojanowski S., Ciszek M., Chorowski M., Measurements of capacitances and self-inductances of lines supplying superconducting magnets (project FAIR),Wrocław University of Technology (in Polish, unpublished) (2015).
• [9] Sanchez A.V., Plyusnin V., Measurement of Bus Bars capacitances, GSI Note (unpublished) (2015).

Uwagi

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