For the general public
- Good descriptions of how ALPHA works can be found in the publication section on our website
- Particularly appropriate for students and non-physicists are Cold Antihydrogen: a new frontier in fundamental physics,
I'm A Scientist... Get Me Out of Here!
Between Big Bang and Pizza Toppings, Postdocs Mark Johnson and Muhammed Sameed answered questions in the online event "I'm A Scientist, Get Me Out of Here!"
Virtual Event
Outreach Article
RSSSE July 2016 - Enhancement Cavity
ALPHA member demonstrates the phenomen of cavity build-up at the Royal Society Summer Science Exhibition 2019
Exhibition
Outreach Article
Experimental Hardware
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ALPHA 1 (2005– 2012) Physics: First trapped antihydrogen. First quantum transitions (hyperfine). Hardware: Octupole based minimum-B field Ioffe-Prittchard trap for neutral atoms superposed on Penning-Malmberg trap for antihydrogen synthesis. |
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ALPHA 2 (2012 - present) Physics: First laser spectroscopy. First laser-cooling. Hardware: Catching trap introduced to split functionality away from antihydrogen region to improve mechanical access (for e.g. lasers). |
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ALPHA Beamline (2018 - present) A separate system that connects ALPHA 2/3, ALPHA-g and the Positron Accumulator to allow the accumulator to feed positrons to both ALPHA 2/3 and ALPHA-g as well as allow for antiprotons to be transported to ALPHA-g. |
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ALPHA 3 (2021 - present) Aim: Hydrogen precision in antihydrogen spectroscopy. First observation of photons from antihydrogen. Improved antihydrogen trapping & stacking. Observation of additional optical transitions (e.g. 4s->2s) in antihydrogen Hardware: Upgrade with fluorescence detection for 121nm light as well as visible wavelengths. Will also include detection of 313nm light for laser-cooling and magnetometry with Be+. |
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