Article

Development of a Nb3Sn quadrupole magnet model

CEA, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette
IEEE Transactions on Appiled Superconductivity (impact factor: 1.04). 04/2001; DOI:10.1109/77.920291 pp.2184 - 2187
Source: IEEE Xplore

ABSTRACT One possible application of Nb3Sn, whose
superconducting properties far exceed those of NbTi, is the fabrication
of short and powerful quadrupole magnets for the crowded interaction
regions of large particle accelerators. To learn about Nb3Sn
technology and to evaluate fabrication techniques, DAPNIA/STCM at
CEA/Saclay has undertaken an R&D program aimed at designing and
building a 1 m-long, 56 mm single-aperture quadrupole magnet model. The
model relies on the same coil geometry as the LHC arc quadrupole
magnets, but has no iron yoke. It is expected to produce a nominal field
gradient of 211 T/m at 11870 A. The coils are wound from Rutherford-type
cables insulated with quartz fiber tapes, before being heat-treated and
vacuum-impregnated with epoxy resin. Laminated, austenitic collars,
locked around the coil assembly by means of keys restrain the Lorentz
forces. After reviewing the conceptual design of the magnet model, we
report on the cable and cable insulation development programs and we
present the results of NbTi-Nb3Sn cable splice tests

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Keywords

cable insulation development programs
 
coil assembly
 
coil geometry
 
coils
 
conceptual design
 
epoxy resin
 
fabrication techniques
 
iron yoke
 
large particle accelerators
 
magnet model
 
NbTi-Nb<sub>3</sub>Sn cable splice tests
 
powerful quadrupole magnets
 
quartz fiber tapes
 
short
 
superconducting properties