[en] Two new technologies for raising the power density in high current, inertial confinement fusion accelerators have been developed in the past two years. Magnetic flashover inhibition utilizes the self-magnetic fields around the vacuum insulator surface to inhibit surface flashover; average electric fields of 40 Mv/m at magnetic fields of 1.1 T have been achieved. Self-magnetic insulation of long, vacuum transmission lines has been used to transport power at 1.6 x 10¹⁴ W/m² over six meters and up to 1.6 x 10¹⁵ W/m² over short distances in a radial anode-cathode feed. The recent data relevant to these new technologies and their implications for ICF will be explored