A new high-speed integrated circuit to reliably transmit data in the demanding environment of the world’s largest physics experiment is the fastest of its kind. The “link-on-chip” — or LOC serializer circuit — was designed by physicists for use in a key experiment of CERN’s Large Hadron Collider particle accelerator. Designed for a high-radiation environment, it can operate at cryogenic temperatures, with high data bandwidth, low-power dissipation and extremely high reliability.