In accelerator physics, a magnetic lattice is a composition of electromagnets at given longitudinal positions around the vacuum tube of a particle accelerator, and thus along the path of the enclosed charged particle beam.
Lattices can be closed (cyclic accelerators like the synchrotrons), linear (for linac facilities) and are also used at interconnects between different accelerator structures (transfer beamlines).
Such a structure is needed for focusing of the particle beam in modern, large-scale facilities.
Many lattices are composed of identical substructures or cells, which denote a special magnet arrangement that may reoccur at several positions along the path.
The most widely known are A Magnet Accelerator is very important for fast moving of objects.