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Wyszukujesz frazę "superconducting bus-bars" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Analysis of capacitance of a cryogenic by-pass line for SIS100 particle accelerator at FAIR
Autorzy:
Tomków, Ł.
Trojanowski, S.
Ciszek, M.
Chorowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/140368.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
line capacitance
superconducting bus-bars
particle accelerators
Opis:
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.
Źródło:
Archives of Electrical Engineering; 2018, 67, 4; 803-814
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
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
Powiązania:
https://bibliotekanauki.pl/articles/141153.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
line inductance
mutual inductance
induced currents
superconducting bus-bars
particle accelerators
Opis:
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.
Źródło:
Archives of Electrical Engineering; 2019, 68, 3; 485-496
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical assessment of thermal behaviour of a superconducting bus-bar with a Nuclotron-type cable
Autorzy:
Tomków, Łukasz
Cholewiński, Maciej
Ciszek, Marian
Chorowski, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/140941.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electro-thermal analysis
heat transfer
particle accelerators
superconducting bus-bars
superconductivity
Opis:
Sections of the superconducting magnets of the SIS100 particle accelerator, under construction at the Facility for Antiproton and Ion Research (FAIR), the Society for Heavy Ion Research (GSI), Darmstadt, are going to be connected with the by-pass lines. Each line will be used to transfer a two-phase helium flow and an electric current. The electric current will be carried by four pairs of superconducting Nuclotron-type cables. Fast-ramping currents are expected to cause the generation of heat within the cables. In this work the results of a numerical thermal analysis of a bus-bar are presented. The amount of heat transferred from the environment was found based on geometric dimensions of the line and applied insulation. The amount of hysteresis loss, generated in the cable during the operation under most demanding regime of the operation of the accelerator, was calculated. According to the amount of the generated heat, the amount of the hysteresis loss is low in relation to the heat generated in the superconducting magnets. Also it was found that the cable used in the line still retains a large margin of current-carrying capacity.
Źródło:
Archives of Electrical Engineering; 2020, 69, 2; 365-377
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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