Large-Area Neutron Detector
The large-area neutron detector, also known as LAND, is the name of a detector of neutrons installed at GSI (Institute for Heavy Ion Research) in Arheilgen, close to the city of Darmstadt, Germany. The detector is built of 10 planes with 20 paddles each.
Source: Wikipedia — Large-Area Neutron Detector (CC BY-SA 4.0)