**10. Conclusions**

The CusPIG ion source can generate current densities of 30 mA/sq. cm of many ion species, because of its efficient trapping of 100 eV primary electrons, and has a slot exit 3 mm wide, producing a ribbon beam, whose breadth has been demonstrated to 350 mm and can be extended to meter-scale dimensions; thus the linear current density has a maximum of around 1ampere per meter breadth.

The U3DS analyzer design can analyze meter-scale broad beams, while being less susceptible to the 'hash' instabilities of high-current beams in magnets. It allows the maximum current to increase in proportion to beam breadth. Paired with the CusPIG ion source, the U3DS magnet can analyze and transmit current densities approaching 1 ampere per meter, at an energy of 15 keV, from a 3 mm slit. With such an ion source it can achieve a modest resolving power of around 30.
