Development of an Innovative Insulation for Nb3Sn Wind and React Coils
Abstract
At the present time, Nb3Sn is the best superconductor candidate for the realization of high field magnets (>10-11 teslas). However its implementation remains delicate because of the great brittleness of material after the heat treatment necessary to form the Nb3Sn compounds. The conventional insulation for Nb3Sn wind & react coils requires performing, after the heat treatment, a vacuum resin impregnation, which adds to the cost and raises failure risk. We propose a one-step innovating ceramic insulation deposited directly on the un-reacted conducting cable. The conducting cable is wound according to conventional techniques and, after the heat treatment necessary to the form the Nb3Sn, we obtain a coil having a mechanical cohesion, while maintaining a proper conductor positioning and a suitable electric insulation. We will have studied the electric properties of superconducting cable isolated at the room temperature and at 4.2 K.
- Publication:
-
Advances in Cryogenic Engineering: Transactions of the International Cryogenic Materials Conference - ICMC
- Pub Date:
- June 2004
- DOI:
- 10.1063/1.1774578
- Bibcode:
- 2004AIPC..711..266P
- Keywords:
-
- 81.05.Mh;
- 62.20.Mk;
- 07.20.Mc;
- Cermets ceramic and refractory composites;
- Fatigue brittleness fracture and cracks;
- Cryogenics;
- refrigerators low-temperature detectors and other low-temperature equipment