Evaluation of Large, Multifilament Nb sub 3 Sn Conductors with a New 12-Telsa Tensile Test Apparatus

摘要

A large cryogenic tensile test apparatus has been constructed at the Lawrence Livermore Laboratory (LLL) as part of the Nb sub 3 Sn conductor program. This equipment was designed so that mechanical measurements can be made at 300, 77, or 4.2 K and critical current can be measured under simulated operating conditions as a function of the strain on large, prototype conductors for fusion magnets. The maximum operating parameters of the machine are load = 2.23 x 10 exp 5 N, magnetic field = 12 T, and conductor current = 10 kA. Some of the unique features of this equipment are described and preliminary mechanical and superconducting data on sample Nb sub 3 Sn conductors discussed. (ERA citation 02:060332)