Ternary Nb3Sn superconductors with artificial pinning centers and high upper critical fields

Xu, Xingchen; Rochester, Jacob; Peng, Xuan; Sumption, Mike; Tomsic, Mike

doi:10.1088/1361-6668/aaf7ca

Title: Ternary Nb₃Sn superconductors with artificial pinning centers and high upper critical fields

Abstract

In this letter we demonstrate the development of ternary Nb3Sn multifilamentary conductors with artificial pinning centers (APC) which achieve high critical fields. These recently-developed conductors were tested in a 31 T magnet, and the results showed that their upper critical field (B _c2) values at 4.2 K are 27-28 T, and irreversible field (B _irr) values are above 26 T, values similar to or higher than those of best RRP conductors. The non-Cu J _c has been brought to nearly 1200 A/mm^–2 at 16 T and 4.2 K, comparable to RRP, in spite of the fact that the fine-grain Nb₃Sn fractions in filaments are still low (20-30%) and the grain sizes are still not fully refined (70-80 nm) due to conductor designs and heat treatments that are not yet optimized. The Nb₃Sn layer J _c at 4.2 K, 16 T is 4710 A/mm^–2 for the APC wire with 1% Zr, about 2.5 times higher than RRP conductors, in spite of the fact that its grain size is not yet fully refined due to insufficient oxygen and unoptimized heat treatment. An analysis is presented about the non-Cu J _c that can be achieved by further optimizing the APC conductors and theirmore » heat treatments.« less

Authors:

^[1]; Rochester, Jacob ^[2]; Peng, Xuan ^[3]; Sumption, Mike ^[2]; Tomsic, Mike ^[3]

Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
The Ohio State Univ., Columbus, OH (United States)
Hyper Tech Research Inc., Columbus, OH (United States)

Publication Date:: Thu Jan 03 00:00:00 EST 2019

Research Org.:: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1487043

Report Number(s):: arXiv:1810.10569; FERMILAB-PUB-18-572-TD
Journal ID: ISSN 0953-2048; 1700498

Grant/Contract Number:: AC02-07CH11359

Resource Type:: Journal Article: Accepted Manuscript

Journal Name:: Superconductor Science and Technology

Additional Journal Information:: Journal Volume: 32; Journal Issue: 2; Journal ID: ISSN 0953-2048

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; Nb3Sn superconductors; artificial pinning center; Bc2; critical current density

Citation Formats


                    Xu, Xingchen, Rochester, Jacob, Peng, Xuan, Sumption, Mike, and Tomsic, Mike. Ternary Nb3Sn superconductors with artificial pinning centers and high upper critical fields.  United States: N. p., 2019. 
        Web.  doi:10.1088/1361-6668/aaf7ca.

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                    Xu, Xingchen, Rochester, Jacob, Peng, Xuan, Sumption, Mike, & Tomsic, Mike. Ternary Nb3Sn superconductors with artificial pinning centers and high upper critical fields.  United States.  https://doi.org/10.1088/1361-6668/aaf7ca

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                    Xu, Xingchen, Rochester, Jacob, Peng, Xuan, Sumption, Mike, and Tomsic, Mike. 2019.  
        "Ternary Nb3Sn superconductors with artificial pinning centers and high upper critical fields".  United States.  https://doi.org/10.1088/1361-6668/aaf7ca.  https://www.osti.gov/servlets/purl/1487043.

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@article{osti_1487043,

  title        = {Ternary Nb3Sn superconductors with artificial pinning centers and high upper critical fields},

  author       = {Xu, Xingchen and Rochester, Jacob and Peng, Xuan and Sumption, Mike and Tomsic, Mike},

  abstractNote = {In this letter we demonstrate the development of ternary Nb3Sn multifilamentary conductors with artificial pinning centers (APC) which achieve high critical fields. These recently-developed conductors were tested in a 31 T magnet, and the results showed that their upper critical field (B c2) values at 4.2 K are 27-28 T, and irreversible field (B irr) values are above 26 T, values similar to or higher than those of best RRP conductors. The non-Cu J c has been brought to nearly 1200 A/mm–2 at 16 T and 4.2 K, comparable to RRP, in spite of the fact that the fine-grain Nb3Sn fractions in filaments are still low (20-30%) and the grain sizes are still not fully refined (70-80 nm) due to conductor designs and heat treatments that are not yet optimized. The Nb3Sn layer J c at 4.2 K, 16 T is 4710 A/mm–2 for the APC wire with 1% Zr, about 2.5 times higher than RRP conductors, in spite of the fact that its grain size is not yet fully refined due to insufficient oxygen and unoptimized heat treatment. An analysis is presented about the non-Cu J c that can be achieved by further optimizing the APC conductors and their heat treatments.},

  doi          = {10.1088/1361-6668/aaf7ca},

  url          = {https://www.osti.gov/biblio/1487043},
  journal      = {Superconductor Science and Technology},

  issn         = {0953-2048},

  number       = 2,

  volume       = 32,

  place        = {United States},

  year         = {Thu Jan 03 00:00:00 EST 2019},

  month        = {Thu Jan 03 00:00:00 EST 2019}

}

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Journal Article:

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https://doi.org/10.1088/1361-6668/aaf7ca

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Cited by: 29 works

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Figures / Tables:

Figure 1: The R-B curves of the two reference wires and the three APC samples.

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Works referenced in this record:

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Figures / Tables found in this record:

Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.

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Similar Records

Title: Ternary Nb3Sn superconductors with artificial pinning centers and high upper critical fields

Abstract

Citation Formats

Figures / Tables:

Status of the Future Circular Collider Study text, January 2017

Conductor Specification and Validation for High-Luminosity LHC Quadrupole Magnets journal, June 2017

Internal Tin ${\hbox {Nb}}_{3}{\hbox {Sn}}$ Conductors Engineered for Fusion and Particle Accelerator Applications journal, June 2009

High field Nb/sub 3/ Sn conductor development at oxford superconducting technology journal, June 2003

Performance Boost in Industrial Multifilamentary Nb3Sn Wires due to Radiation Induced Pinning Centers journal, June 2015

Artificial Pinning in Nb 3 Sn Wires journal, June 2017

Composite core Nb/sub 3/Sn wires: preparation and characterization journal, March 1989

Artificial flux pinning in Nb and Nb/sub 3/Sn superconductors journal, March 1993

Optimization of Heat Treatment Profiles Applied to Nanometric-Scale ${\rm Nb}_{3}{\rm Sn}$ Wires With Cu-Sn Artificial Pinning Centers journal, June 2011

Results on mono element internal tin Nb3Sn conductors (MEIT) with Nb7.5Ta and Nb(1Zr+Ox) filaments journal, June 2005

The Effect of Second Phase Additions on the Microstructure and Bulk Pinning Force in ${\rm Nb}_{3}{\rm Sn}$ PIT Wire journal, June 2009

The role of oxygen and zirconium in the formation and growth of Nb3sn grains journal, December 1994

Refinement of Nb 3 Sn grain size by the generation of ZrO 2 precipitates in Nb 3 Sn wires journal, February 2014

Internally Oxidized Nb 3 Sn Strands with Fine Grain Size and High Critical Current Density journal, January 2015

Recent Progress in Application of Internal Oxidation Technique in Nb3Sn Strands journal, June 2017

The Effects of Ti Addition and High Cu/Sn Ratio on Tube Type $(\hbox{Nb}, \hbox{Ta})_{3}\hbox{Sn}$ Strands, and a New Type of Strand Designed to Reduce Unreacted Nb Ratio journal, June 2014

Heat Treatment Optimization Studies on PIT ${\rm Nb}_{3}{\rm Sn}$ Strand for the NED Project journal, June 2009

The upper critical field of filamentary Nb3Sn conductors journal, May 2005

A model for the compositions of non-stoichiometric intermediate phases formed by diffusion reactions and its application to Nb3Sn superconductors journal, January 2016

Multifilament NbTi with artificial pinning centers: The effect of alloy and pin material on the superconducting properties journal, August 1992

Improvement of small to large grain A15 ratio in Nb 3 Sn PIT wires by inverted multistage heat treatments journal, December 2017

Internally Oxidized Nb3Sn Strands with Fine Grain Size and High Critical Current Density text, January 2014

A model for the compositions of non-stoichiometric intermediate phases formed by diffusion reactions, and its application to Nb3Sn superconductors preprint, January 2015

Title: Ternary Nb₃Sn superconductors with artificial pinning centers and high upper critical fields

Status of the Future Circular Collider Study
text, January 2017

Conductor Specification and Validation for High-Luminosity LHC Quadrupole Magnets
journal, June 2017

Internal Tin ${\hbox {Nb}}_{3}{\hbox {Sn}}$ Conductors Engineered for Fusion and Particle Accelerator Applications
journal, June 2009

High field Nb/sub 3/ Sn conductor development at oxford superconducting technology
journal, June 2003

Performance Boost in Industrial Multifilamentary Nb3Sn Wires due to Radiation Induced Pinning Centers
journal, June 2015

Artificial Pinning in Nb 3 Sn Wires
journal, June 2017

Composite core Nb/sub 3/Sn wires: preparation and characterization
journal, March 1989

Artificial flux pinning in Nb and Nb/sub 3/Sn superconductors
journal, March 1993

Optimization of Heat Treatment Profiles Applied to Nanometric-Scale ${\rm Nb}_{3}{\rm Sn}$ Wires With Cu-Sn Artificial Pinning Centers
journal, June 2011

Results on mono element internal tin Nb₃Sn conductors (MEIT) with Nb7.5Ta and Nb(1Zr+O_x) filaments
journal, June 2005

The Effect of Second Phase Additions on the Microstructure and Bulk Pinning Force in ${\rm Nb}_{3}{\rm Sn}$ PIT Wire
journal, June 2009

The role of oxygen and zirconium in the formation and growth of Nb₃sn grains
journal, December 1994

Refinement of Nb ₃ Sn grain size by the generation of ZrO ₂ precipitates in Nb ₃ Sn wires
journal, February 2014

Internally Oxidized Nb ₃ Sn Strands with Fine Grain Size and High Critical Current Density
journal, January 2015

Recent Progress in Application of Internal Oxidation Technique in Nb3Sn Strands
journal, June 2017

The Effects of Ti Addition and High Cu/Sn Ratio on Tube Type $(\hbox{Nb}, \hbox{Ta})_{3}\hbox{Sn}$ Strands, and a New Type of Strand Designed to Reduce Unreacted Nb Ratio
journal, June 2014

Heat Treatment Optimization Studies on PIT ${\rm Nb}_{3}{\rm Sn}$ Strand for the NED Project
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The upper critical field of filamentary Nb3Sn conductors
journal, May 2005

A model for the compositions of non-stoichiometric intermediate phases formed by diffusion reactions and its application to Nb3Sn superconductors
journal, January 2016

Multifilament NbTi with artificial pinning centers: The effect of alloy and pin material on the superconducting properties
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Improvement of small to large grain A15 ratio in Nb 3 Sn PIT wires by inverted multistage heat treatments
journal, December 2017

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text, January 2014

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