Slashdot Mirror

← Back to Stories (view on slashdot.org)

First Collisions At the LHC

Posted by CmdrTaco on from the make-sure-the-world-is-still-here dept.

An anonymous reader writes "At 1:06 p.m. Central European Summer Time (CEST) today, the first protons collided at 7 TeV in the Large Hadron Collider. These first collisions, recorded by the LHC experiments, mark the start of the LHC's research program."

6 of 256 comments (clear)

  1. First events by mu22le · · Score: 5, Informative

    One of the first events seen in Atlas:
    http://imgur.com/ugwnl.png

    and in CMS:
    http://cmsdoc.cern.ch/events/snapshotA.png

    1. Re:First events by mu22le · · Score: 4, Informative

      Here are the Atlas official plots:
      http://atlas.web.cern.ch/Atlas/public/EVTDISPLAY/events.html

      CMS:
      http://cms.web.cern.ch/cms/Media/Images/EventDisplays/7_0TeVCollisions/index.html

      LHCb:
      http://cdsweb.cern.ch/record/1255400

      Alice:
      http://cdsweb.cern.ch/record/1255398?ln=en

      and finally all the CERN public photos:
      http://cdsweb.cern.ch/collection/LHC%20First%20Physics%20Photos

  2. Resources by tist · · Score: 5, Informative

    You can see the beam status here: http://op-webtools.web.cern.ch/op-webtools/vistar/vistars.php?usr=LHC1 and follow the webcast here http://webcast.cern.ch/lhcfirstphysics/. The webcast screen also has links to each of the experiments.

  3. Re:We hit 7 TeV, but how much more to go? by John+Hasler · · Score: 4, Informative

    Nothing is equivalent to the "big bang". The "big bang" is a singularity. 14TeV isn't even equivalent to some of the natural collisions that happen in the upper atmosphere.

    --
    Warning: this article may contain humor, sarcasm, parody, and perhaps even irony. Read at your own risk.
  4. Re:This may be the biggest experiment of all by Kierthos · · Score: 5, Informative

    It's turtles all the way down.

    --
    Mr. Hu is not a ninja.
  5. Re:We hit 7 TeV, but how much more to go? by JohnFluxx · · Score: 5, Informative

    There isn't really a limit. You just get closer and closer to t=0.
    The big bang timeline goes roughly (listing the time when the mentioned period _ends_):

    10^-43 seconds - Planck epoch - this is where we need string theory etc. The universe is expanding really really really fast. Frigging fast. This is called 'inflation'
    10^-36 seconds - Grand unification epoch - this is where gravity starts to become seperate from the other forces
    10^-12 seconds - The really-really-really-frigging-fast inflation is now over. We've now just got the normal expansion.
        --- WE ARE HERE WITH THE LHC ---
    10^-6 seconds - Higgs particles are now able to give particles mass. But too hot for quarks to combine into protons etc.
    1 second - Quarks have now formed into protons etc
    10 seconds - anti-matter is now annihalted somehow. All the protons etc have been created.
    20 minutes - Hydrogen etc is formed. We now have real atoms! (Nucleosynthesis)