sentences:  If one uses the baseline assumptions for the current HiPER design, the two lasers (driver and heater) produce about 270 kJ in total, yet generate 25 to 30 MJ, a gain of about 100.Considering a variety of losses, the actual gain is predicted to be around 72.Not only does this outperform NIF by a wide margin, the smaller lasers are much less expensive to build.