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Internal-Tin Nb/Sn Strand with Enhanced Ti Additions Aimed at 17 T Optimization

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG02-05ER84361
Agency Tracking Number: 79663S05-I
Amount: $100,000.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: 35
Solicitation Number: DE-FG02-06ER06-09
Solicitation Year: 2006
Award Year: 2005
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
110 East Canal Street
Troy, OH 45373
United States
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Florin Buta
 (614) 481-8050
Business Contact
 Michael Tomsic
Title: Mr.
Phone: (614) 481-8050
Research Institution

79663S The DOE High Energy Physics program seeks improved superconductors for high energy particle accelerator applications. Some of these applications will require operating magnetic fields of or in excess of 16 T; however, the selection of the proper level of Ti and Ta additions for Nb3Sn optimization for 16 T class operations has not received much attention. Earlier strand optimizations were targeted at lower fields (e.g. 12 T), where Ti additions were less efficient than Ta at increasing the critical current density (Jc). This project will investigate and optimize the levels of Ti and Ta in NbSn superconductors for optimum 4.2 K, 15-17T operation. In Phase I, two extrusion billets will be fabricated. After strand fabrication, wire samples will be heat treated and tested for Jc at (4K, 12-17 T). The completeness of the reaction heat treatment and the chemistry of the subelements and strands will be investigated by using electron microscopy in conjunction with energy and wavelength dispersive spectroscopy. The residual resistivity ratio, stability, and AC losses of selected strands will be evaluated. Commercial Applications and Other Benefits as described by the awardee: The largest market for the technology will be for accelerator and fusion magnets. Superconducting high field magnets also are used for MRI, NMR, high gradient magnetic separators, and SMES applications.

* Information listed above is at the time of submission. *

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