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The first paper describes the design of conductors for the Next European Torus (NET). The toroidal field requires conductors whose performances can withstand the operating current, stability and quench behaviour, mechanical stresses and alternating current losses. The design of the conductors is based on the use of A-15 superconducting strands (Nb(3)Sn) or Nb(3)Al), cooling by forced flow of supercritical helium and the use of composite stabilizing materials to reduce a.c. losses. The second paper describes a liquid nitrogen cooling system for the Frascati Tokamak Upgrade (FTU). The machine is kept at liquid nitrogen temperature during operation, to minimize power consumption in the magnet coils and polidal field windings. coils and poloidal field windings. Structural materials at cryogenic temperatures have usefully higher mechanical properties.

Additional information

Authors: ENEA, ENEA, Centro Ricerche Energia Frascati (IT)
Bibliographic Reference: Report: RT/FUS/88/10 EN (1988)
Availability: Available from Servizio Studi e Documentazione, ENEA, Centro Ricerche Energia Frascati, C.P. 65-00044 Frascati, Roma (IT)
Record Number: 198910603 / Last updated on: 1994-12-01
Original language: en
Available languages: en