![Malurian antimatter reactor](https://cdn.statically.io/img/static.wikia.nocookie.net/memoryalpha/images/b/b1/Malurian_antimatter_reactor.jpg/revision/latest/scale-to-width-down/180?cb=20181005023201&path-prefix=en)
The Malurian antimatter reactor
An antimatter reactor, antimatter pile, or main reactor was a power generation device that utilized antimatter. Antimatter reactors typically emitted neutrinos as a byproduct.
In 2151, Sub-Commander T'Pol detected neutrino emissions from a city on the Akaali homeworld despite the society being pre-industrial. The neutrinos were later found to be caused by a Malurian antimatter reactor, which was powering a secret underground veridium mining operation, eight meters beneath the surface. (ENT: "Civilization")
![Voyager main computer processor](https://cdn.statically.io/img/static.wikia.nocookie.net/memoryalpha/images/2/2c/Voyager_main_computer_processor.jpg/revision/latest/scale-to-width-down/125?cb=20181011003621&path-prefix=en)
The prop in Voyager
In September 2152, Commander Tucker noted that they had to shut down the main reactor to prevent being broiled inside the catwalk. (ENT: "The Catwalk")