Abstract
An international team has recently completed the Technical Design
Report for the International Linear Collider (ILC).
The ILC is an electron-positron collider with a design target
centre-of-mass energy of 500 GeV.
Following the Higgs boson discovery it has been proposed to realise the
ILC by building a 250 GeV 'Higgs Factory', and subsequently to upgrade
it in stages to higher energies of 350 GeV, where it would also serve
as a 'top factory', and eventually to 500 GeV to allow access to the
top-Higgs and Higgs self- couplings. The Japanese particle physics
community has proposed to host the collider in Japan.
I will describe the programme of precision Higgs-boson measurements at
the ILC. I will give an overview of the collider design, and report on
the project status.