First successful beam at record energy of 6.5 TeV

Post by oneel » Fri, Apr 10, 2015, 10:31 PM UTC

cpg wrote: post #34

vowelless wrote: post #9

This is awesome! I highly recommend 'Particle Fever', in case you haven't seen it yet. It cover's the LHC before the shutdown and restart, which included the Higgs boson discovery. Just fascinating look into what an international collaboration of human beings can accomplish. IMDB: http://www.imdb.com/title/tt1385956/ Trailer: https://www.youtube.com/watch?v=Rikc7foqvRI Netflix: http://www.netflix.com/WiMovie/70296323…

The recent reviews at the Netflix link are priceless :)

Post by noobermin » Sat, Apr 11, 2015, 12:07 AM UTC

krohling wrote: post #25

noobermin wrote: post #22

Earlier quoted context omitted.

To expand upon what you're saying for the grandparent, what you have is one beam of protons can reach the kinetic energy of 6.5 TeV. They will circulate a second beam at the same energy, and collide them head on. Thus, the "center-of-momentum" energy, that is, the energy involved in a collision of one proton from one beam hitting another from the other beam will be 13 TeV at max. Often times, physicists refer to this…

This is a great explanation. One other bit I'll add is that the particles they're colliding are protons, which are made of other particles, called quarks. While the protons are colliding with a relative energy of 13TeV (or will be) the actual collision energy depends on the collision angle of the quarks inside the proton. If it's a glancing collision, which it almost always is, the actual collision energy is much low…

Post by cozzyd » Sat, Apr 11, 2015, 2:58 AM UTC

neals wrote: post #31

How do they even create a 'beam of particles'?

Post by egodemens » Sat, Apr 11, 2015, 5:51 AM UTC

Post by katabatic » Sat, Apr 11, 2015, 7:53 AM UTC

dietrichepp wrote: post #46

davesque wrote: post #35

Earlier quoted context omitted.

To maxerickson: I know what you mean, but I still think you have to look at the numbers. It seems plausible to me that the black hole might be so small that it would take literally millions of years or more to consume enough mass to become a threat. And that might even depend a lot on chance since most particles would just drift by it without passing inside of its event horizon since the force of gravity has very lit…

Right, but if that were possible, it would have already happened. Cosmic rays hitting the Earth's upper atmosphere can already have much, much more energy than the LHC achieves. So the LHC is being ramped up to produce 13 TeV collisions... but we've measured cosmic ray impacts as high as 300,000,000 TeV. That was the so-called "oh my god particle", which had as much kinetic energy as a 60mph baseball, even though it…