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  • richardmitnick 1:48 pm on May 2, 2013 Permalink | Reply
    Tags: , Dark Matter, ,   

    From Fermilab: “New dark matter detector begins search for invisible particles” 


    Fermilab is an enduring source of strength for the US contribution to scientific research world wide.

    May 2, 2013
    Science contacts:
    Hugh Lippincott, Fermilab, 609-558-6313, hugh@fnal.gov .
    Juan Collar, University of Chicago, 773-702-4253, collar@uchicago.edu

    “Scientists this week heard their first pops in an experiment that searches for signs of dark matter in the form of tiny bubbles.

    bubbles
    This is an image of the first particle interactions seen in the COUPP-60 detector, located half a mile underground at SNOLAB in Ontario, Canada. Photo: SNOLAB

    Scientists will need further analysis to discern whether dark matter caused any of the COUPP-60 experiment’s first bubbles.

    ‘Our goal is to make the most sensitive detector to see signals of particles that we don’t understand,’ said Hugh Lippincott, a postdoc with the Department of Energy’s Fermi National Accelerator Laboratory who has spent much of the past several months leading the installation of the one-of-a-kind detector in a laboratory a mile and a half underground.

    COUPP-60 is a dark-matter experiment funded by DOE’s Office of Science. Fermilab managed the assembly and installation of the experiment’s detector.

    The COUPP-60 detector is a jar filled with purified water and CF3I—an ingredient found in fire extinguishers. The liquid in the detector is kept at a temperature and pressure slightly above the boiling point, but it requires an extra bit of energy to actually form a bubble. When a passing particle enters the detector and disturbs an atom in the clear liquid, it provides that energy.

    Dark-matter particles, which scientists think rarely interact with other matter, should form individual bubbles in the COUPP-60 tank.

    ‘The events are so rare, we’re looking for a couple of events per year,’ Lippincott said.”

    See the full article here.

    Fermilab Campus

    Fermi National Accelerator Laboratory (Fermilab), located just outside Batavia, Illinois, near Chicago, is a US Department of Energy national laboratory specializing in high-energy particle physics.


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  • richardmitnick 8:38 pm on October 27, 2010 Permalink | Reply
    Tags: Dark Matter,   

    CBS Discovers Dark Matter 

    From Interactions.org

    So, do I have to cross CBS off my list of the news organizations blind to scientific research?

    The CBS headline: “Has Dark Matter Finally Been Seen?

    The CBS article:

    “In a new finding that could have game-changing effects if borne out, two astrophysicists think they’ve finally tracked down the elusive signature of dark matter.
    i1
    This view of the gamma-ray sky is constructed from one year of Fermi Large Area Telescope (LAT) observations.
    (Credit: NASA/DOE/Fermi LAT Collaboration)

    This invisible substance is thought to make up much of the universe – but scientists have little idea what it is. They can only infer the existence of dark matter by measuring its gravitational tug on the normal matter that they can see.

    Now, after sifting through observations of the center of our Milky Way galaxy, two researchers think they’ve found evidence of the annihilation of dark matter particles in powerful explosions.

    “Nothing we tried besides dark matter came anywhere close to being able to accommodate the features of the observation,” Dan Hooper, of the Fermi National Accelerator Laboratory in Batavia, Ill., and the University of Chicago, told SPACE.com. “It’s always hard to be sure there isn’t something you just haven’t thought of. But I’ve talked to a lot of experts and so far I haven’t heard anything that was a plausible alternative.”

    Hooper conducted the analysis with Lisa Goodenough, a graduate student at New York University.

    Read the rest of the article here

     
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