Another record luminosity at LHC

The new record for peak luminosity at the Large Hadron Collider is now 4.1 MHz/barn or 4.1/μb/s or 0.13 /fb/year.

Update: The LHC beam teams are now celebrating the delivery of 1/pb of accumulated luminosity, which is a 1000th of their target for 2011. This slide is from their morning meeting on Saturday, although the milestone was reached at 9am Sunday.  


9 Responses to Another record luminosity at LHC

  1. Luboš Motl says:

    Wow, I appreciate the last two units, especially the last one. So that’s less than an order-of-magnitude below the 2011 plan.

    Is this the luminosity of ATLAS separately, and CMS has the same thing as a bonus? I guess it is.

  2. Philip Gibbs says:

    Yes, this is the luminosity in ATLAS, CMS and LHCb individually. ALICE is deliberately working with a lower luminosity at present.

    With regard to the amount required to reach the 2011 target we must remember that luminosity decreases from this peak over the run and there are breaks to refill and for regular maintenance. So they need peak luminosities at least around 3/fb/year or 100/μb/s. The plan is to run with 796 bunches which should exceed the requirement by a small factor.

  3. Luboš Motl says:

    Thanks for the numbers! BTW what do you find wrong about WordPress? All WordPress blogs work for me. But your URL on Twitter has a wrong character instead of the period before “org”.

  4. Philip Gibbs says:

    wordpress.com and their hosted blogs including this one were down for a few minutes. Everything is back up now.

    Others had tweeted about it so it was not just my typo

    Note update to post

    Update: they went down for another hour after that comment!

  5. Luboš Motl says:

    Yes, now I caught the black moment, too. Watts Up With That says that they’re down and it’s probably Matt’s fault.

  6. […] abre esta entrada también ha sido elegida por Philip Gibbs para comentar esta noticia en ”Another record luminosity at LHC,” viXra log, August 7, […]

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  8. […] that some results from the first 1/pb have come out so quickly. It is only 16 days since they passed that milestone. ATLAS have really thrown the gauntlet down for CMS who only showed plots using 200/nb in their […]

  9. […] morning they should be able to collect 1/pb in a single run. It is only a few weeks since they celebrated collecting 1/pb in […]

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