Seems things are getting smaller. Imperial College developed an accelerator just a few netres long, now it seems they have an anti-matter accelerator just
centimenters long (well, if you ignore the bloody great laser that it seems is standard particle physics lab kit anyway.)
QuoteResearchers have found a way to accelerate antimatter in a 1000x smaller space than current accelerators, boosting the science of exotic particles.
The new method could be used to probe more mysteries of physics, like the properties of the Higgs boson and the nature of dark matter and dark energy, and provide more sensitive testing of aircraft and computer chips.
The method has been modelled using the properties of existing lasers, with experiments planned soon. If proven, the technology could allow many more labs around the world to conduct antimatter acceleration experiments.
https://phys.org/news/2018-08-mini-antimatter-rival-large-hadron.html