- noun a machine that makes charged particles travel very fast in straight paths by using alternating high-frequency voltages
- An accelerator in which the particles travel in a straight line, as opposed to having a circular or spiraling path, as is the case with a circular accelerator. Currently, charged particles can be accelerated in this manner to energies in the TeV range. Used, for instance, to study the nature of matter.
- A linear accelerator (1) in which the accelerated particles are electrons.
- abbreviation linac
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