Title :
Performance analysis of HD1: a 16 Tesla Nb3Sn dipole magnet
Author :
Mattafirri, S. ; Bartlett, S.E. ; Bish, P.A. ; Caspi, S. ; Dietderich, D.R. ; Ferracin, P. ; Gourlay, S.A. ; Hannaford, C.R. ; Hafalia, A.R. ; Lau, W.G. ; Lietzke, A.F. ; McInturff, A.D. ; Nyman, M. ; Sabbi, G.L. ; Scanlan, R.M.
Author_Institution :
Lawrence Berkeley Nat. Lab., CA, USA
fDate :
6/1/2005 12:00:00 AM
Abstract :
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.
Keywords :
accelerator magnets; deformation; materials testing; quenching (thermal); superconducting coils; superconducting magnets; 16 T; AD 2003 10; HD1 test; Lawrence Berkeley National Laboratory; Nb3Sn; Superconducting Magnet Group; brittle conductors; dipole magnet; high field accelerator magnets; mechanical deformation; performance analysis; quench current; quench origin; quench propagation; quench protection; quench velocity; racetrack coils; stick slip conductor motions; Accelerator magnets; Boring; Conductors; Laboratories; Niobium; Performance analysis; Superconducting coils; Superconducting magnets; Testing; Tin; quench origin; quench propagation; quench protection;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2005.849518
