New way to generate and collect antimatter

Potentially way cheaper than current methods or concepts. Also includes some uses for it. [Link]

Extraction of Antiparticles Concentrated in Planetary Magnetic Fields by James Bickford describes an orbital plasma magnet system for concentrating and trapping antiprotons.

The baseline concept calls for using conventional high temperature superconductors to form two pairs of RF coils that have a radius of 100 m and weigh just 7000 kg combined. A 5000 kg nuclear or solar power system provides the 200 kW required to operate systems and compensate for dissipative losses in the plasma. The magnetic field induced by plasma motion driven by the RF coils is used to first concentrate the incoming antiprotons and then to trap them. Based on the Earth antiproton flux, the system would be capable of collecting 25 nanograms per day and storing up to 110 nanograms of it in the central region between the coils. The system is more than five orders of magnitude more cost effective than Earth based antiproton sources for space-based applications.

The system could collect antimatter at the rate of 8.6 micrograms per year. It only stores 110 nanograms so the stored antimatter would need to be shifted every few days to more permanent storage.