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First results from ALPHA-g: Antihydrogen doesn't fall up!

Today ALPHA released the first set of results from the ALPHA-g apparatus that was added to the ALPHA setup in 2018.

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Laser cooling of antihydrogen atoms

On the front page of Nature: ALPHA publishes first laser-cooling of antihydrogen!
Go to the publication!

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Investigation of the fine structure of Antihydrogen

On February 19, 2020, ALPHA published the first investigation of the fine structure of Antihydrogen.

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Timelapse of the ALPHA-g addition to the ALPHA Experiment

In 2018 the ALPHA Experiment was expanded with the addition of ALPHA-g. Look at timelapse videos to see the massive changes, from installation to beamline!

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Lyman-Alpha Transition observed in Antihydrogen

The ALPHA collaboration has for the first time observed single-photon excitation of antihydrogen atoms from the ground (1S) state to the 2P state using 121nm pulsed laser light - the so-called lyman-alpha line of the Lyman series.

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First 1S-2S Line Shape published in Nature

Our latest breakthrough, the first detailed study of one of the hyperfine components of the 1S-2S line in trapped antihydrogen has been published in Nature and is the most precise and most accurate measurement of antimatter to date.

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ALPHA featured in the CERN Courrier

Following 30 years of effort by the low-energy antimatter community at CERN, the ALPHA collaboration has made seminal measurements of antihydrogen’s spectral structure in a bid to test nature’s fundamental symmetries.

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ALPHA Collaboration Meeting January 24-26, 2018

Participants in ALPHA's annual collaboration meeting at CERN.

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Observation of the 1S-2S Transition in Trapped Antihydrogen published in Nature

Our latest breakthrough, the first observation of the 1S-2S transition in trapped antihydrogen has been published in Nature and is the first time a spectral line has been observed in antihydrogen.

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The 2016 Run is over

We've shut down for 2016 - see you next year!

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