Cu Stabilized $\hbox{Nb}_{3}\hbox{Al}$ Strands for the High Field Accelerator Magnet

Comparison Between ${\hbox {Nb}}_{3}{\hbox {Al}}$ and ${\hbox {Nb}}_{3}{\hbox {Sn}}$ Strands and Cables for High Field Accelerator Magnets

“…10 for F1 Nb 3 Al strand and the RRP Nb 3 Sn strand [1], [7]. The F1 Nb 3 Al strand was also made by the RHQT method and is expected to have similar hardness; we expect F3 and F4 Nb 3 Al to be harder than F1, because they have a Ta matrix instead of a Nb matrix.…”

“…In the last several years, we have developed and tested four series F1, F2, F3 and F4 Nb 3 Al strands [1]. They are all copper stabilized 1 mm diameter Nb 3 Al strands.…”

“…Normalized critical current versus transverse pressure for F1 Nb3Al strand. The strand data from major Nb3Sn strands are also plotted from the reference [1] and [7].…”

Brittle superconducting magnets: an equivilent strain model

“…Transport properties measurements in [1][2][3][4][5][6][7][8] were based on the principle of applying transverse pressure on a sample and then measuring its critical current I c . We can think of at least two different boundary conditions for the cable, which may produce different current density performances: plane stress with free sides, and plane stress with constrained sides (Fig.…”

“…ORK in literature on the sensitivity of Nb 3 Sn cables to strain has been conducted in a number of stress states, including uniaxial [1][2][3][4][5] and multi-axial [6][7][8] stress states, using some very different experimental setups. In order to determine a model that assigns to each tensor a scalar representation, we need data exploring all the dimensions of the tensor by means of an experiment that provides consistent and controlled conditions.…”