Develop, build, and test pulsed solenoid lenses for use in a transport line for a high-power electron beam accelerator. Develop design for tape-stack cable (TSC) of REBCO superconducting tape and developed model for current-sharing among tapes in and within a TSC and its value for dynamically balancing currents among the tapes within a magnet winding so that each tape carries equal share of its critical current limit.