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Freya Blekman | USLHC | USA

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And this is what happens when you open the collimators

Beam gas collision

If the collimators are open and the beam passes through the detector, you can actually see a lot less than when you break the particle beam with your big block of Tungsten (the material that the collimators are made of).

So… here you see what we see when beam goes through our detector. Practically nothing, which is good as there are no collisions at the moment. The only thing that the beam can collide with is the few remaining gas atoms in the beam vacuum (no vacuum is perfect). These occasional beam gas with beam-collisions are much cleaner and what you’re looking at here is a muon flying along the beam (the collision probably actually was some time before the actual detector) and being detected by our muon detectors.


5 Responses to “And this is what happens when you open the collimators”

  1. Actually, before I continue by filling up the blog: most event displays are posted by the CMS collaboration here:




  2. Lyne Cantin says:

    Hi CERN team, I think the world needs to know what your first analysis of the results are. Can you please publicly comment on the first findings?

  3. Honoria Dormia says:

    TO attain the necessary temperature and collision theoretically at the birth of the BIG BANG if there is indeed ONE;will you be any closer to harnessing the electromagnetic field and applying it to travel and eliminating time as we know it?

  4. Dear Honoria and Lyne,

    The results we showed Today are only a proof that both the accelerator and the detectors work. We still have a very long way to go. We need billions and billions of collisions before we can start examining the smallest constituents of matter and how they interact.

    Note that fortunately the electromagnetic field was already harnessed many years ago (otherwise for example you would not be able to read this on your computer screen), but if you want to know more about what we are *really* looking for I propose you take a look here:


  5. Brenda Ordonez says:

    Hi Freya,

    Re the Higgs, how will you know what to look for? Do you (scientists) know its signature? If you’ve never seen it, how can you know it? Sorry if these questions are lamely put. This is such a brain crusher for me, I can’t think how to frame questions.

    Thanks for any light you can shed on recognizing the Higgs particle.

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