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LHC Data

  1. Nov 24, 2009 #1

    rhody

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    Video: http://video.google.com/videosearch?q=LHC+Data&hl=en&emb=0&aq=f#q=LHC+Data&hl=en&emb=0&aq=f&qvid=LHC+Data&vid=3407710188844062148" [Broken]

    jh54e8.jpg

    Dr Shapiro, Head of Physics at Berkley

    Watched this video over a year ago, 1:12 min long, to sum up...

    53:20 Dr Shapiro discusses detection of supersymmetry versus extra dimensions
    59:30 Data not available unless LHC Collaboration member
    1:06:10 IMHO most interesting part, discusses blinded analysis and reasons for it
    1:07:10 Random offsets introduced in data to be sure analysis is accurate

    The idea that random offsets introduced into the data (even for LHC Collaboration members)
    to ensure data integrity bothers me. Single gatekeeper assigned to safeguard.

    Don't know if they implemented this or not.
     
    Last edited by a moderator: May 4, 2017
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  3. Nov 24, 2009 #2

    rhody

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    Re: New LHC monitoring portal LIVE DATA

    Dear Vanadium 50

    I think you may be interested in what I learned from a video by Dr Marjorie Shapiro, head of Physics at Berkley over two years ago about data gathered at the LHC. See post #4 and click the video link:

    See this link: https://www.physicsforums.com/showthread.php?t=357311"

    Watch from 59:30 on, and note what I said in red. That fact, if implemented, adds a whole new wrinkle to analysis of the LHC data, agreed ?

    Rhody...
     
    Last edited by a moderator: Apr 24, 2017
  4. Nov 25, 2009 #3

    rhody

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    Re: New LHC monitoring portal LIVE DATA

    Dear Vanadium,

    I need to clarify what I meant when I said, "The idea that random offsets introduced into the data (even for LHC Collaboration members) to ensure data integrity bothers me."

    I meant that giving someone absolute authority even to a member of the LHC Collaboration is inherently dangerous without checks and balances. The decision to doctor Raw LHC Data could give one analysis group an unfair advantage over another in being the "first" to document and report a new particle discovery, even unintentionally. That was my point. I believe that everyone should have fair access to data, then apply analysis tools suited for the job of finding experimentally predicted/unpredicted results.

    As to your second point about discovering something new by learning what is already known, I agree with. The more I read and learn, the more I realize I need to dig deeper and read and learn more, like peeling an onion, except with particle physics you don't have something to see/feel/touch to know when you have reached the core, like a real onion. Lots of fun...
     
  5. Nov 25, 2009 #4

    Vanadium 50

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    Re: New LHC monitoring portal LIVE DATA

    No such decision has been taken, nor will it be taken. You are seriously misunderstanding Marjorie's comments.
     
  6. Nov 25, 2009 #5

    rhody

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    Re: New LHC monitoring portal LIVE DATA

    OK, I will bite, then what is the official policy of the sharing of the raw and partially processed LHC then ?

    From an interested outsider looking in, I only commented on what was said, all I am asking for is official clarification, CERN link, etc...
     
  7. Nov 25, 2009 #6
    Re: New LHC monitoring portal LIVE DATA

    There is an extensive and complicated worldwide network of http://lcg.web.cern.ch/LCG/public/tiers.htm" [Broken] which will store, process and distribute LHC data. The following Web sites have some basic information, but are nowhere near comprehensive:
    http://public.web.cern.ch/public/en/LHC/Computing-en.html
    http://lcg.web.cern.ch/LCG/public/ [Broken]
    https://www.racf.bnl.gov/experiments/usatlas

    Part of the US ATLAS Northeast Tier 2 Center is located next to my office (and we employ a Research Associate Professor to run it), so I've been able to hear some long and interesting talks about this system.
     
    Last edited by a moderator: May 4, 2017
  8. Nov 25, 2009 #7

    Vanadium 50

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    Re: New LHC monitoring portal LIVE DATA

    Please don't hijack threads. I've tried to put all your messages together in one thread.

    It's unlikely that you will find a CERN link that says "Rhody is misunderstanding things". That's the nature of misunderstanding.
     
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