Reaction chamber

Access crawlway to the reaction chamber aboard a Constitution class.

A matter/antimatter reaction assembly (often known simply as an M/ARA, or reaction chamber) is a type of energy reactor which is fueled by injectors of matter and antimatter into a central reaction element, creating large amounts of energy when those two materials mutually annihilate each other. Matter and antimatter is injected into the M/ARA in an intermix 1:1 ratio. The dilithium crystal is used to moderate this reaction.

The dilithium articulation frame is housed inside the M/ARA, behind the dilithium chamber hatch.