New Mechanical Concept for Nb$_{3}$Sn Quadrupole

A new mechanical design concept for the Nb$_{3}$Sn quadrupoles has been developed with a goal of an accelerator quality magnet that can be industrially produced in large series. This concept can easily be extended to any length and applied on both 1-in-1 and 2-in-1 configurations. It is based on the pole-loading concept and collared coils using dipole-type collars. First conceptual design study using finite element analysis has been carried out using the present base-line HL-LHC IR quadrupole QXF coil geometry for direct comparison with the bladder-and-key structure. The main features of the new design concept are described and the main results of the structural analysis discussed