“…Investigations of both laser physics and laser-plasma interaction performed with single-shot KrF facilities AURORA (LANL, USA) [1], NIKE (NRL, USA) [2], SPRITE (RAL, UK) [3], ASHURA (AIS&T, Japan) [4], HEAVEN-I (CIAE, China) [5], and GARPUN (LPI, Russia) [6] and especially with rep-rate ELECTRA laser (NRL, USA) [7] have proved that e-beam-pumped KrF laser might be the best challenge for the direct-drive Inertial Fusion Energy (IFE) [8]. Fusion Test Facility (FTF) [9] with twenty angular-multiplexed 28-kJ amplifiers operating uninterruptedly at 5 Hz for two years (≥3·10 8 shots) with efficiency ≥ 6% is the next milestone on the path to KrF IFE.…”