2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/173561In this paper we use current and proposed final doublet magnet technologies to reoptimise the interaction region of the International Linear Collider and reduce the power losses. The result is a set of three new final doublet layouts with improved beam transport properties. The effect of localised power deposition is considered, and its reduction using Tungsten liners.Talk given by R. Appleby at the the Linear Collider Workshop ``LCWS06'', 9-13 March 2006, I.I.Sc Bangalore, IndiaAccelerator Physicstext