The aluminum stabilized Nb-Ti conductor for the ZEUS thin solenoid

Bruzzese, R.; Ceresara, S.; Donati, G.; Rossi, S.; Sacchetti, N.; Spadoni, M.

doi:10.1109/20.92658

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…The processes explored can be classified into three groups. In the first group where relatively low-temperature processes (jelly-roll (JR) [3][4][5][6], powder metallurgy (PM) [7][8][9][10][11], clad chip extrusion (CCE) [12], rod-in-tube (RIT) [13][14][15][16]) are adopted, microscale assembly of elemental constituents (Nb/Al) is directly reacted through diffusion at temperatures below 1000 • C to suppress the grain coarsening of Nb 3 Al. However, even if the diffusion spacing between Nb and Al is made less than 0.1 µm to complete the reaction in a short time, the Nb 3 Al phase composition still remains non-stoichiometric, and thus J c rapidly decreases in high fields.…”

Section: Introductionmentioning

confidence: 99%

Nb₃Al conductors for high-field applications

Takeuchi¹

2000

Supercond. Sci. Technol.

167

111

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Nb3Al has been considered as an alternative to Nb3Sn for high-field and large-scale applications, since an extremely high critical current density and excellent strain tolerance were demonstrated in Nb3Al by laboratory tests. Thus, there have been a great number of efforts in the exploration of new fabrication processes for Nb3Al. The processes explored can be classified into three groups: low-temperature processes (jelly-roll, powder metallurgy, clad chip extrusion, rod-in-tube), high-temperature processes (laser- or electron-beam irradiation), and transformation processes. This review describes Nb3Al conductors for each processing group, focusing on current topics relating to the rapid-heating, quenching and transformation method in which an excellent Nb3Al conductor can be obtained with a multifilamentary structure over several hundred metres in length.

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Section: Introductionmentioning

confidence: 99%

Nb₃Al conductors for high-field applications

Takeuchi¹

2000

Supercond. Sci. Technol.

167

111

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Superconductor for the coils of the modular stellarator Wendelstein 7-X

Heller¹

1994

IEEE Trans. Magn.

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The magnet system of the planned stellarator Wendelstein 7-X (W 7-X) consists of 50 nonplanar and 20 planar coils. Nonplanar coils require a winding process with compound bending (simultaneous bending in two planes). The use of a stiff conductor would lead to technical difficulties and requires very expensive tools for the winding of these coils. Therefore a conductor was industrially developed which is relatively soft and therefore of good workability during the winding process. Once the winding is completed, a heat treatment gives the conductor a final strength being high enough to withstand all mechanical loads which might be expected during the operation of W 7-X. The conductor consists of a four stage cable with 192 superconducting strands and a special AI-alloy jacket extruded around the cable. Properties of this conductor and test results attained up to now a r e given.

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The aluminum stabilized Nb-Ti conductor for the ZEUS thin solenoid

Cited by 2 publications

References 3 publications

Nb₃Al conductors for high-field applications

Nb₃Al conductors for high-field applications

Superconductor for the coils of the modular stellarator Wendelstein 7-X

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The aluminum stabilized Nb-Ti conductor for the ZEUS thin solenoid

Cited by 2 publications

References 3 publications

Nb3Al conductors for high-field applications

Nb3Al conductors for high-field applications

Superconductor for the coils of the modular stellarator Wendelstein 7-X

Contact Info

Product

Resources

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Nb₃Al conductors for high-field applications

Nb₃Al conductors for high-field applications