Tetryon reactor

A tetryon reactor was a type of power generator that produced epsilon radiation.

The Nacene utilized tetryon reactor technology. The Caretaker's array utilized several tetryon reactors. It was believed that they were destroyed with the array, but this later came into question.

Tash's graviton catapult used a tetryon reactor. While assisting him repair the catapult in 2376, Seven of Nine suggested that he stole the tetryon reactor from the Caretaker - though this theory was later found to be caused by paranoia, brought on by Seven's use of a cortical processing subunit.