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What's the longest time antimatter was able to be stored?

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  1. Sep 19, 2015 #1
    What's the longest time antimatter was able to be stored?
     
  2. jcsd
  3. Sep 19, 2015 #2

    mfb

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    Depends on the type of antimatter you consider. Positrons and antiprotons can be stored for months in penning traps. I guess many years would be possible, but no one seems to bother keeping them that long.

    Antiprotons
    Positrons
    More antiprotons ("no antiproton losses were detected over a period of several month")

    Neutral antihydrogen is significantly harder to store, as it is not charged. The ALPHA experiment at CERN manages to store atoms for something like 15 minutes - probably more now but I didn't see anything new after 2011.
     
  4. Sep 19, 2015 #3

    Vanadium 50

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    For pbars, I believe the record is 69 days, 10 hours, 18 minutes, from the Fermilab antiproton accumulator. This happened between 26 March 2004 and 4 June 2004.
     
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