Advanced Hybrid Current Leads

Thursday 26 Nov 2015, 11:30 → 12:00 Europe/Zurich

30/7-010 (CERN)

Hybrid current leads consisting of a warm copper and a cold HTS section have greatly reduced the refrigeration needs of many applications of superconductors. We have investigated whether it is possible to improve the presently used hybrid current leads. In our opinion improvements are possible by • using second generation superconductors produced by thin film deposition • increasing the overlapping length between superconductor and copper for a more efficient use of the refrigerant • optimizing the geometry of the heat exchanger of the copper section to obtain maximum heat transfer with minimum pressure drop of the coolant • using coolant from a refrigerator, which is efficient in the region between 300 and 70 K.