>>718765581
>I have concluded that this path is either impossible or unintended.
Yeah, obviously, there's a big wall and a door you have to open from the other side. You're basically trying to skip 80% of that reactor, which isn't impossible btw.
The intended way is to enter from the left of the reactor and eventually get to the structure in front of the turret where there's a path with obstacles to shield you from it.