In Portal 2, what is the name of the device that creates a tractor beam?

In Portal 2, the device that creates a tractor beam is called the Excursion Funnel.

The Excursion Funnel is a stream of energy that carries objects and test subjects along a fixed path. Players can enter the funnel themselves, send cubes through it, or redirect its route by placing portals on suitable surfaces. This turns it into both a transport system and a puzzle-solving tool.

The device is commonly confused with the phrase “tractor beam,” which describes what it does rather than its official name. The funnel can move objects in either direction, depending on the direction of its flow. Portal placement is therefore crucial: a portal can bend the funnel around corners or guide it into otherwise inaccessible areas.

The Excursion Funnel appears alongside other Portal 2 testing technologies, including Propulsion Gel, Repulsion Gel, Conversion Gel, and Hard Light Bridges.