Manipulation of antiprotons, positrons and other charged particles

Sympathetic cooling

Sympathetic cooling is a mechanism where two different species are mixed together in the same region of our trap, and will therefore exchange energy via Coulomb interactions. If you are able to reduce the average kinetic energy of one species, the other species will cool down as well. In this context, ‘cooling’ is synonymous with reducing kinetic energy. We use this in two ways at ALPHA ‐ using electrons and beryllium ions.

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