Dumping the beam means diverting it out of the main LHC ring and crashing it into a specially designed buffer (I think it is a lump of steel or something). So cool to see this all happening automatically.
https://iopscience.iop.org/article/10.1088/1748-0221/16/11/P...
And I want microphones, I want to hear the thing ring with that 2.3kHz note. I want to feel the 27Hz wiggle and the 196Hz thump. I want to get the Slow-Mo guys in there to place their camera, and watch the thing jump when a beam hits it.
The amount of energy in that thing just defies intuitive understanding from reading a paper, I have to use other senses.
I was always like "Yeah that's just a small beam and the magnets are to navigate it in circles". In retrospect it does make sense now why people were concerned about the collision of such beams.
Also static magnetic fields don't "do" work, by that I mean, that you can not extract energy from a magnetic field by sending particles through it: The Lorentz force is perpendicular to both the movement of the particle through the field, and perpendicular to the field itself. Hence taking the inner=scalar=dot product of the force vectors and trajectories they come out as 0, i.e. no work is done.
You need dynamic magnetic fields to do work.
https://www.symmetrymagazine.org/article/parking-the-lhc-pro...
"Enough stored energy to melt a ton of copper"
"The beam dump is a solid graphite cylinder 8 meters long and under a meter in diameter. It’s wrapped in a stainless-steel case, filled with nitrogen gas, and surrounded by iron and concrete shielding."
There are accelerator-driven fission reactor ideas that would use ~1 GeV protons (much less energetic than the protons here) to produce neutrons to drive a subcritical target. These might be useful to destroy certain nuclear waste isotopes.