Studies of NbTi strands extracted from coreless Rutherford cables

Goodrich, Loren F.; Pittman, E S.; Ekin, John W.; Scanlan, R.M.

doi:10.1109/tmag.1987.1064841

Cited by 9 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The cable critical current is typically degraded slightly as compared to the same strands before cabling because of filament damage during cable fabrication caused by severe deformation of the strands at the narrow inner edge of the cable. 5 This degradation is reflected by the difference in cable critical current measured with the field maximum at the narrow edge of the cable vs. along the cable face. 6 In the case of the cable in QC1 and QC2, this difference is about 4-5% as measured at BNL.…”

Section: Test Resultsmentioning

confidence: 99%

A 40 mm bore quadrupole magnet for the SSC

Taylor¹,

Barale²,

Caspi³

et al. 1991

IEEE Trans. Magn.

View full text Add to dashboard Cite

A 40 mm bore quadrupolc magnet design, called "QC", has been made for the SSC with the following parameters: 208 T/m gradient at 6500A, 2-laycr "cos 2 8" winding arrangement with 30 slrand cable and one spacer wedge per coil. Structural support is provided by self-supporting interlocking collars; two types of symmetrical laminations are pre-assembled into collar packs for case of assembly. This paper will describe the design of a prototype quadrupolc magnet for the SSC and preliminary test results on 1 m models.

show abstract

Section: Test Resultsmentioning

confidence: 99%

A 40 mm bore quadrupole magnet for the SSC

Taylor¹,

Barale²,

Caspi³

et al. 1991

IEEE Trans. Magn.

View full text Add to dashboard Cite

show abstract

“…At present, the material of choice in the windings for magnets is Nb-Ti. The effect of stress on current degradation has been studied by Ekin et al Current degradation as a function of strand location and field angle on cable compacted into a keystone shape was evaluated [ 158 ]. It was found that cabling can lead to localized reductions in I c within a single strand.…”

Section: Low-temperature Superconductorsmentioning

confidence: 99%

A brief review of recent superconductivity research at NIST

Lundy

Swartzendruber

Bennett

1989

J. RES. NATL. BUR. STAN.

View full text Add to dashboard Cite

A brief overview of recent superconductivity research at NIST is presented. Emphasis is placed on the new high-temperature oxide superconductors, though mention is made of important work on low-temperature superconductors, and a few historical notes are included. NIST research covers a wide range of interests. For the new high-temperature superconductors, research activities include determination of physical properties such as elastic constants and electronic structure, development of new techniques such as magnetic-field modulated microwave-absorption and determination of phase diagrams and crystal structure. For the low-temperature superconductors, research spans studying the effect of stress on current density to the fabrication of a new Josephson junction voltage standard.

show abstract

“…Additional factors inlcude the cable pitch, which affects the cable compaction, and also the relative amount of compaction performed by the side rolls compared with the wide face rolls. Detailed studies of cable degradation have shown that the damage is localized at the edges of the cable and actually occurs at both the narrow and the wide edge of the cable [8]. Since the PFI value for the wide edge is signifIcantly larger than that for the narrow edge of a typical keystoned cable, we concluded that deformation at the cable edges due to the side rollers must be more deleterious than that of the wide rollers.…”

Section: Cable Degradation Studiesmentioning

confidence: 76%

Recent improvements in superconducting cable for accelerator dipole magnets

Scanlan

Royet

Conference Record of the 1991 IEEE Particle Accelerator Conference

View full text Add to dashboard Cite

The superconducting magnets required for the SSC have provided a focus and a substantial challenge for the development of superconducting wire and cable. The number of strands in the cables have been increased from 23 for the Tevatron to 30 for the SSC inner layer cable and 36 for the SSC ouler cable. Critical current degradation associaled with cabling has been reduced from 15% for the Tevatron to less than 5%. R&D which has led to these improvements will be described and the opponunities for funher advances will be discussed.

show abstract

Studies of NbTi strands extracted from coreless Rutherford cables

Cited by 9 publications

References 5 publications

A 40 mm bore quadrupole magnet for the SSC

A 40 mm bore quadrupole magnet for the SSC

A brief review of recent superconductivity research at NIST

Recent improvements in superconducting cable for accelerator dipole magnets

Contact Info

Product

Resources

About