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    News From Inside II : 2.36 TeV Collisions!
    By Tommaso Dorigo | December 9th 2009 01:57 AM | 8 comments | Print | E-mail | Track Comments
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    About Tommaso

    I am an experimental particle physicist working with the CMS experiment at CERN and the CDF experiment at Fermilab. In my spare time I play chess...

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    Ok, now it is public, so I can also broadcast it: LHC last night got the two proton beams to collide at 2.36 TeV total center of mass energy. You can see a few event displays here:

    http://atlas.web.cern.ch/Atlas/public/EVTDISPLAY/events.html  (from ATLAS),

    http://lhcb-public.web.cern.ch/lhcb-public/en/Collaboration/LHCbEvDis.html (from LHCB).

    I am still waiting for some public info from CMS... Stay posted for more colorful event displays!

    Comments

    Hank
    Do they say anything historical during these milestones?   "Gentlemen, we have beam splash" or something like that?

    For all the hype (and hysteria) this got last year and leading up to it, actual things of interest like this aren't getting a lot of press.
    Hank Campbell | 12/09/09 | 11:30 AM
    Hatice Cullingford

    Ok. They can pay their electric bills. Great show to double in about 10 days! This machine is made for more and more. Yes to colorful displays, Tommaso!

    Thanks for the hot news as always.

    Hatice Cullingford | 12/09/09 | 20:57 PM
    Hatice Cullingford

    Highslide JSHighslide JS

    Soon after midnight on November 30 the LHC beats its new world record with two beams ramped to 1.18 TeV simultaneously. The beams were dumped 45 minutes later. (Credit: CERN)

    Happiness is home-grown.

    Hatice Cullingford | 12/09/09 | 21:14 PM
    dorigo
    Hi,

    no, there is no communication like the one Hank mentions. Just announcements through the cern personnel mailing list by the Director General (Rolf Heuer). Then, during the regular updates at meetings, we sometimes clap our hands when shown the nice new results. Right now I am at a collaboration meeting at CERN, and things have been evolving very fast.
    There were many talks showing early results, and people showed their enthusiasm with applauses at the end of the talks, not much more.

    Cheers,
    T.
    Tommaso Dorigo | 12/10/09 | 09:06 AM
    Can someone clarify why 2.36 Tev was the CM energy selected ? Why not 2.0, 2.2, 2.4 Tev, etc would've exceeded the Tevatron's 1.96 Tev. Was it a physics or accelerator based reason ?

    Jimbo (not verified) | 12/12/09 | 00:14 AM
    dorigo
    Jimbo, 2.36 is 20% higher than the tevatron. But the reason was entirely accelerator-based. Going much higher than that was not possible now (I have been explained why, but now forgot!). From sometime in February next year we will start ramping up to 3.5 TeV per beam.

    Cheers,
    T.
    Tommaso Dorigo | 12/12/09 | 04:21 AM
    kuday
    Hi,
    I think the link is broken. I just wanted to say it: it doesn't redirect though the address is right. 

    But i'm citing the link again:
    http://atlas.web.cern.ch/Atlas/public/EVTDISPLAY/events.html
    Sinan Kuday | 12/14/09 | 08:25 AM
    Hank
    It worked ... at least this time.
    Hank Campbell | 12/14/09 | 10:22 AM

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