#beam pipe

[todays-xkcd]

If you keep trying to spray your collaborators with the beam when they're not looking, I'm turning off the ion source and NO one will get to play with the beam!' --Physics's mom

Beam Pipe [Explained]

Transcript Under the Cut

[Megan and Cueball in front of a large hadron collider. Cueball is stood on the ground in front of it while Megan is on a stepladder with her hand up to the beam pipe.]

Caption: This year's Physics Nobel will go to the scientists who figured out that you could make the large hadron collider more powerful by covering part of the beam pipe with your thumb.