The Spallation Neutron Source (SNS) High-Energy Beam Transport (HEBT) line is a 170-meter transport system that delivers 1.0–1.3 GeV negatively charged hydrogen ions (H-) from the superconducting linac (SCL) to the accumulator ring. It matches, characterizes, and cleans the beam before injection, operating at 60 Hz to enable subsequent neutron production.