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Performance analysis of HD1: a 16 Tesla Nb3Sn dipole magnet

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15 Author(s)
Mattafirri, S. ; Lawrence Berkeley Nat. Lab., CA, USA ; Bartlett, S.E. ; Bish, P.A. ; Caspi, S.
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The Superconducting Magnet Group at Lawrence Berkeley National Laboratory (LBNL) has been developing technology for high field accelerator magnets from brittle conductors. HD1 is a single bore block dipole magnet using two, double-layer Nb3Sn flat racetrack coils. The magnet was tested in October 2003 and reached a bore peak field of 16 T (94.5% of short sample). The average quench current plateau appeared to be limited by "stick slip" conductor motions. Diagnostics recorded quench origins and preload distributions. Cumulative deformation of the mechanical structure has been observed. Quench velocity in different field regions has been measured and compared with model predictions. The results obtained during the HD1 test are presented and discussed.

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:15 ,  Issue: 2 )

Date of Publication:

June 2005

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