The International Large Detector (ILD) is a detector concept developed for a future high-energy electron-positron collider. Its design aims at exceptional performance in precision measurements of the Higgs boson, the top quark, electroweak processes and potential new physics at energies up to 1 TeV.
In this article, we provide an updated overview of the ILD concept, incorporating recent results presented at EPS-HEP25. We discuss detector performance, capabilities for staged operation, ongoing technological developments, and the integration of ILD into possible collider implementations such as FCC-ee.
ILD is based mostly on technologies which have been demonstrated by extensive research and test programs. The concept has been developed by a group of nearly 60 institutes from around the world, and offers a well-developed and powerful environment for science and technology studies at lepton colliders. The required performance of the detector, the proposed implementation and the readiness of the different technologies needed are discussed.