TY - JOUR N2 - 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 ob- served between numerical and experimental results. The obtained values are within the requirements of the accelerator design. L1 - http://www.journals.pan.pl/Content/108841/PDF/art07.pdf L2 - http://www.journals.pan.pl/Content/108841 PY - 2018 IS - No 4 EP - 803–814 DO - 10.24425/aee.2018.124741 KW - line capacitance KW - superconducting bus-bars KW - particle accelerators A1 - Tomków, Łukasz A1 - Trojanowski, Stanisław A1 - Ciszek, Marian A1 - Chorowski, Maciej PB - Polish Academy of Sciences VL - vol. 67 DA - 2018.11.19 T1 - Analysis of capacitance of a cryogenic by-pass line for SIS100 particle accelerator at FAIR SP - 803–814 UR - http://www.journals.pan.pl/dlibra/publication/edition/108841 T2 - Archives of Electrical Engineering ER -