A five-volume report containing the blueprint for the International Linear Collider (ILC) was published on 12 June. The authors of the Technical Design Report handed it over to the International Committee for Future Accelerators in three consecutive ceremonies in Tokyo, CERN and Fermilab, representing Asia, Europe and the Americas. Its publication marks the completion of many years of globally co-ordinated R&D and completes the mandate of the Global Design Effort for the ILC.

The ILC – a 31-km electron–positron collider with a total collision energy of 500 GeV – was designed to complement and advance LHC physics. The report contains all of the elements needed to propose the collider to collaborating governments, including the latest, most technologically advanced design and implementation plan optimized for performance, cost and risk.

Some 16,000 superconducting cavities will be needed to drive the particle beams. At the height of operation, bunches of 2 × 1010 electrons and positrons will collide roughly 7000 times a second. The report also includes details of two state-of-the-art detectors to record the collisions and an extensive outline of the geological and civil-engineering studies conducted for siting the ILC.

The design effort continues in the Linear Collider Collaboration (CERN Courier April 2013 p5). This combines the two most mature future particle-physics projects at the energy frontier – the ILC and the Compact Linear Collider (CLIC) – in an organizational partnership to co-ordinate and advance global development work for a linear collider. Some 2000 scientists worldwide – particle physicists, accelerator physicists and engineers – are involved in the ILC or in CLIC and often in both projects.

• For the report, see www.linearcollider.org/ILC/Publications/Technical-Design-Report.