[no-to-illegals]

Good question. Since it doesn’t exist as matter, the composition collection (and I’m guessing) would be a form of magnetic collection utilizing a magnetic field?

[Talisker]

Since it doesn’t exist as matter, the composition collection (and I’m guessing) would be a form of magnetic collection utilizing a magnetic field?

Yep - and then the collected anti-matter would have to provide the energy necessary to power it's own magnetic containment bottle - with energy left over for other things, like powering a starship.