sentences:  In HiPER, the compression provided by the driver is "good", but not nearly that created by larger devices like NIF; HiPER's driver is about 200 kJ and produces densities of about 300 g/cm3.That's about one-third that of NIF, and about the same as generated by the earlier NOVA laser of the 1980s.For comparison, lead is about 11 g/cm3, so this still represents a considerable amount of compression, notably when one considers the target's interior contained light D-T fuel around 0.1 g/cm3.