Heat Treatment Optimization Studies on PIT ${\rm Nb}_{3}{\rm Sn}$ Strand for the NED Project
Reads0
Chats0
TLDR
In this paper, a powder-in-tube (PIT) strand was successfully developed for the Next European Dipole (NED) program, and extensive heat treatment optimization studies were performed to maximize both critical current and RRR, with a plateau temperature down to 625degC and duration up to 400 hours.Abstract:
For the Next European Dipole (NED) program, a Powder-In-Tube (PIT) strand was successfully developed by SMI. This high-performance Nb3Sn strand presents a non-copper critical current density of ~ 2500 A/mm2 at 12 T applied field and 4.2 K and a filament diameter around 50 mum. Extensive heat treatment optimization studies were performed in order to maximize both critical current and RRR, with a plateau temperature down to 625degC and duration up to 400 hours. It appears that a critical current enhancement of ~ 10% can be achieved for a reaction schedule of 320 hours at 625degC with non-copper critical current density respectively exceeding 2700 and 1500 A/mm2 at 12 and 15 T (4.2 K). Thanks to this modified heat treatment, this strand completely fulfills the NED stringent specification.read more
Citations
More filters
Journal ArticleDOI
Advanced Accelerator Magnets for Upgrading the LHC
TL;DR: In this article, the authors reviewed the last ten year of Nb3Sn accelerator magnet R&D and compared it to the needs of the upgrades and critically assessed the results of the Nb 3Sn and HTS technology and the planned R&DD programs also based on the inputs of first year of LHC operation.
Journal ArticleDOI
Targets for R&D on Nb 3 Sn Conductor for High Energy Physics
Amalia Ballarino,L. Bottura +1 more
TL;DR: In this paper, the authors provide a summary of desirable properties and performance targets for Nb3Sn to satisfy the challenging magnet specifications for upgrades of existing and future HEP accelerators, which is the only practical candidate material offering the required high field performance.
Journal ArticleDOI
A review and prospects for Nb3Sn superconductor development
TL;DR: In this paper, the authors summarized the development of Nb3Sn superconductors and correlated their microstructure and chemistry with their critical current density (Jc) and proposed prospects for further improvement.
Journal ArticleDOI
The EuCARD High Field Magnet Project
TL;DR: In the EuCARD FP7 work-package 7, high field magnet (HFM) was developed for accelerator applications like HL-LHC and HE-lHC as discussed by the authors.
Journal ArticleDOI
A review and prospects for Nb3Sn superconductor development
TL;DR: In this article, the authors summarized the development of Nb3Sn superconductors and correlated their microstructure and chemistry with their non-matrix critical current density (J c).
References
More filters
Journal Article
Performance Boundaries in Nb3Sn Superconductors
TL;DR: Superconducting magnets for high energy physics, fusion, Magnetic Resonance Imaging (NMR) and nuclear magnetic resonance, benefit from the extremely high current densities that can be achieved in superconductors compared to normal conducting materials as discussed by the authors.
Journal ArticleDOI
Microstructural factors important for the development of high critical current density Nb3Sn strand
TL;DR: In this article, the microstructural and microchemical factors that are important for high critical current density Nb 3 Sn are reviewed and recent successful attempts to reduce the cost of alloying the Nb3 Sn for high field application are also examined and the potential for future improvements discussed.
Journal ArticleDOI
State of the art powder-in-tube niobium–tin superconductors
TL;DR: Powder-in-tube (PIT) processed niobium-tin wires are commercially manufactured for nearly three decades and have demonstrated a combination of very high current density (presently up to 2500 A mm−2 non-Cu at 12 T and 4.2 K) with fine (35 μm), well separated filaments.
Journal ArticleDOI
Overview and status of the Next European Dipole Joint Research Activity
Arnaud Devred,Arnaud Devred,Bertrand Baudouy,D.E. Baynham,T. Boutboul,S. Canfer,Maciej Chorowski,P. Fabbricatore,S. Farinon,A. den Ouden,R. van Weelderen,P. Vedrine,G. Volpini +12 more
TL;DR: The Next European Dipole (NED) Joint Research Activity was launched on 1 January 2004 to promote the development of high-performance Nb3Sn conductors in collaboration with European industry as mentioned in this paper.