Development and Study of Nb₃Sn Wires With High Specific Heat

Journal Article · 10 January 2019 · IEEE Transactions on Applied Superconductivity

DOI: https://doi.org/10.1109/TASC.2019.2892325 · OSTI ID:1490835

Xu, Xingchen  ^[1]; Zlobin, Alexander V.  ^[1]; Peng, Xuan ^[2]; Li, Pei ^[1]

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1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
2. Hyper Tech Research, Inc., Columbus, OH (United States)

Recently, a new type of Nb₃Sn conductors were developed, which, by incorporating substances with high specific heat at 2-8 K in a proper design, have demonstrated significant improvement of minimum quench energy (MQE). This method to improving energy margins of conductors is promising to reduce Nb₃Sn magnet training. Here, we continue studying this type of conductors. Voltage-current (V-I) measurements from 15 T to 0 T and voltage-field (V-B) sweeps at various currents were conducted to investigate the influence of increased specific heat on the intrinsic stability of Nb₃Sn conductors. Normal zone propagation velocity (NZPV) was also studied. Lastly, a new scheme was put forward to introduce a new type of substances with not only high specific heat but also high thermal diffusivity to Nb₃Sn conductors, which is expected to work more effectively.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• Grant/Contract Number: AC02-07CH11359
• OSTI ID: 1490835
• Report Number(s): FERMILAB-PUB-18-619-TD; oai:inspirehep.net:1712627
• Journal Information: IEEE Transactions on Applied Superconductivity, Vol. 29, Issue 5; ISSN 1051-8223
• Publisher: Institute of Electrical and Electronics Engineers (IEEE)Copyright Statement
• Country of Publication: United States
• Language: English