Stage 1 Low b IR Quad
The following information is from VLHC Design Study Report.
Main features/requirements of the quadrupole design:
Design gradient: 300 T/m
Aperture: ~80 mm
Maximum beam separation within quad: 12.5 mm
Design gradient: 300 T/m with two layers
Aperture: 85 mm
Nb3Sn Jc: 3000 A/mm2
Mechanical Design: An upgraded version of LHC IR quad design by FNAL