Two-dimensional quench simulation of composite CuNb/Nb3Sn conductors

Tomoyuki Murakami, Satoru Murase, Susumu Shimamoto, Satoshi Awaji, Kazuo Watanabe

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

In order to clarify effect of utilizing a Nb rich CuNb reinforment on superconducting stability, r-z two-dimensional time-dependent numerical simulations on composite CuNb/Nb3Sn wires are conducted. The time variations of temperature and current density distributions, minimum quench energy (MQE), and normal zone propagation velocity (νp) of a Cu-17vol%Nb/Nb3Sn wire, a Cu-63vol%Nb/Nb3Sn wire, and a conventional Cu/Nb3Sn wire are investigated. The increase of the volume fraction of an outermost Cu stabilizer provides high MQE but decreases the total current density. Although the νp is not significantly influenced by the Nb fraction, the Nb rich CuNb reinforcement sacrifices the MQE for its high tensile strength. It is important for magnet design to control the volume fraction of the Cu stabilizer and Nb fraction in the CuNb reinforcement to balance the desired current density, tensile strength, and superconducting stability.

Original languageEnglish
Pages (from-to)393-401
Number of pages9
JournalCryogenics
Volume40
Issue number6
DOIs
Publication statusPublished - 2000

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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