Complex sentence: The US National Ignition Facility, which uses laser-driven inertial confinement fusion, was designed with a goal of break-even fusion; the first large-scale laser target experiments were performed in June 2009 and ignition experiments began in early 2011.
Split into simpler sentences: The US National Ignition Facility, which uses laser-driven inertial confinement fusion, was designed with a goal of break-even fusion. The first large-scale laser target experiments were performed in June 2009 and ignition experiments began in early 2011.