Properties of multi-stage magnetically insulated ion diode: Experimental results and scaling for light ion fusion system

Multi-stage, extraction geometry magnetically insulated ion diode will be the sources of intense bright ion beams for light ion inertial fusion drivers. Two-stage diodes with carbon beam are studied on Reiden-SHVS (2MV + 2MV, 100ns) induction adder accelerator. The experimental results show that the divergence of carbon beam were improved with ion current density Ji ≈ J10 where J10 is an equivalent space charge limit current of ion beam injected diode. Modules of fusion driver were designed applying the experimental results of divergence improving and chrage storipping feature of multi-stage applied-B ion diode.