The recipe for the X-Ray Tower is acquired by examining the x-ray emitter outside the Leyak's containment cell in the XR Containment sector of the Cascade Laboratories.
Recipe
1
2
1
1
Crafting Bench
1
Used In
3
1
10
1
Crafting Bench
1
1
2
1
Crafting Bench
1
Uses
X-Ray Tower is used as a defense against the Leyak. When it gets within the X-Ray Tower's reach (even if through a wall), it turns on its X-Ray light onto the Leyak, causing it to freeze in place, then disappear and drop Leyak Essence.
Sources
X-Ray Tower can only be obtained through Crafting.