A high current density low cost niobium/sub 3/tin conductor scalable to modern niobium titanium production economics

Progress on Mono Element Internal Tin superconductor is presented for four designs with two incorporating integral Nb barriers as opposed to NbTa barriers added later in the fabrication. Processing information is also presented covering the fabrication of these conductors. Sample testing techniques are discussed that gave stable reproducible results to 10 T at current densities of 3767 A/mm 2 (noncopper). Current density as a function of magnetic field from 10 to 17 T is measured and analyzed with respect to heat treatment and configuration. A value of 2700 A/mm 2 in the noncopper at 12 T was achieved in the best though nonoptimized samples. Kramer plots are also presented that show of up to 26 T. Reported " " values are 33 at 17 T for the highest current density sample.

show abstract

“…Cost models developed for the MEIT conductors shows that the target cost of less than $1.50/kAm can be met with margin [8], [9].…”

Section: Introductionmentioning

confidence: 99%

Continued progress on a low cost high current density mono element internal tin conductor (MEIT) with integral barriers

Zeitlin

Gregory²,

Pyon³

et al. 2003

IEEE Trans. Appl. Supercond.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Parameters for the best samples of each type are listed in Table I, together with the goals set by the DOE program. The cost goal is 1.5 $/kA-m at 12 T. While present prices for small batch R&D are considerably higher, analysis based on raw material cost and large process units shows that this goal is realistic [21]. Scale up processes and cost reduction will be the focus of the second phase of the conductor program.…”

Section: Conductor and Cablementioning

confidence: 97%

“…2). Three fabrication processes have demonstrated above 2 kA/mm at 12 T, 4.2 K: Powder in Tube (PIT) [20], Internal Tin (IT) [21] and Modified Jelly Roll (MJR) [22]. PIT wires are developed by Shape Metal Innovation (SMI) in collaboration with Twente University.…”

Section: Conductor and Cablementioning

confidence: 99%

Status of Nb/sub 3/Sn accelerator magnet R&D

Sabbi

2002

IEEE Trans. Appl. Supercond.

View full text Add to dashboard Cite

Excellent mechanical and electrical properties of multifilamentary NbTi have made it the conductor of choice in superconducting accelerators starting from the Tevatron. However, the LHC operating field of 8.33 T is close to limit for NbTi technology. In order to advance to higher fields, a superconductor with higher upper critical field is needed. At present, Nb 3 Sn is the most suitable material in terms of properties, availability, and cost. In contrast to NbTi, Nb 3 Sn is brittle and strain sensitive. Magnet R&D programs are underway worldwide to develop technologies that can take advantage of Nb 3 Sn properties while coping with the associated challenges. Status and accomplishments of the different programs are reviewed in the context of the requirements of next-generation accelerator facilities and possible upgrades to present ones.

show abstract

“…However, most of that improvement has been due to the dramatic increase in Jc performance, while the cost per kilogram has decreased slowly. As shown in [18], significant reductions in price can be realized with increased billet size, which reduces the labor cost factor. However, the increased billet size reduces the labor cost only if the resulting rod and wire can be drawn without breakage.…”

Section: Scaleup and Cost Reductionmentioning

confidence: 99%

A New Generation Nb3Sn Wire, and the Prospects for Its Use in Particle Accelerators

Scanlan¹,

Dietderich²,

Gourlay³

2004

AIP Conference Proceedings

View full text Add to dashboard Cite

The US DOE has initiated a Conductor Development Program aimed at demonstrating a high current density, cost effective Nb 3 Sn conductor for use in accelerator magnets. The first goal, an increase in current density by 50 %, has been achieved in a practical conductor. The program is focused at present on achieving the second goal of reduced losses. The different approaches for achieving these goals will be discussed, and the status will be presented. Magnet technology R&D has been proceeding in parallel with the conductor development efforts, and these two technologies are reaching the level required for the next step--introduction into operating accelerator magnets. An obvious point for introducing this technology is the LHC interaction region magnets, which require large apertures and high fields (or high field gradients). By upgrading the interaction region magnets, machine performance can be enhanced significantly without replacing the arc magnets, which represent most of the cost of an accelerator. Design requirements generated by recent studies and workshops will be reviewed, and a roadmap for the development of the next-generation interaction region magnets will be presented..

show abstract

A high current density low cost niobium/sub 3/tin conductor scalable to modern niobium titanium production economics

Cited by 10 publications

References 10 publications

Continued progress on a low cost high current density mono element internal tin conductor (MEIT) with integral barriers

Continued progress on a low cost high current density mono element internal tin conductor (MEIT) with integral barriers

Status of Nb/sub 3/Sn accelerator magnet R&D

A New Generation Nb3Sn Wire, and the Prospects for Its Use in Particle Accelerators

Contact Info

Product

Resources

About