Sr. Milward et al., PROGRESS IN THE DEVELOPMENT OF THE 1-M-MODEL OF THE 70-MM APERTURE QUADRUPOLE FOR THE LHC-LOW-BETA-INSERTIONS, IEEE transactions on applied superconductivity, 7(2), 1997, pp. 594-597
Within the LHC magnet development program Oxford Instruments has built
a one metre model of the 70 mm aperture low-beta quadrupole. The magn
et features a four layer coil wound from two 8.2 mm wide graded NbTi c
ables, and is designed for 250 T/m at 1.9 K. The magnet has previously
been tested between 4.5 K and 2.3 K. In this paper we review the magn
et rebuild and the subsequent tests. Results an magnet training at 4.3
K and 1.9 K are presented along with the results related to quench pr
otection studies. We also present the first results of magnetic field
measurements done at room and liquid nitrogen temperatures.