Fajans-Wurtele Plasma and Antihydrogen Physics Research Group

Berkeley Postdoc Danielle Hodginson
The ALPHA Experiment    Explore the worlds of antimatter with the ALPHA Collaboration!

The ALPHA Experiment  
Explore the worlds of antimatter with the ALPHA Collaboration!  

Latest News & Announcements

Observation of the effect of gravity on the motion of antimatter

September 27, 2023

Einstein’s general theory of relativity (GR), from 1915, remains the most successful description of gravitation. From the 1919 solar eclipse to the observation of gravitational waves, the theory has passed many crucial experimental tests. However, the evolving concepts of dark matter and...Read more about Observation of the effect of gravity on the motion of antimatter

Summer @ CERN 2018

April 7, 2019
Research with the ALPHA collaboration.Read more about Summer @ CERN 2018

Trapped Antihydrogen Selected as one of 40 Research Milestones

April 9, 2018
"If you can't contain it, you can't study it. That's the case with antimatter, an elusive substance that may hold secrets to matter, time and the universe. So far experiments, including work at CERN in Switzerland, had failed to confine antihydrogen. In this landmark 2010 paper, Gorm Andresen and...Read more about Trapped Antihydrogen Selected as one of 40 Research Milestones

Observation Of The 1S-2S Transition In Trapped Antihydrogen Published In Nature

January 27, 2017
Alpha's 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. This builds on years of work, developing techniques to manipulate super-cold antiprotons and...Read more about Observation Of The 1S-2S Transition In Trapped Antihydrogen Published In Nature

Novel Microwave Cavity for Resonant Cooling of a Lepton Plasma

May 21, 2016
Abstract: The ALPHA experiment performs both spectroscopic and gravitational measurements on antihydrogen. Apparatus can trap only about one atom at a time! All proposed measurements are difficult to perform on a single (anti-) atom. Proposal: Increase the number of antihydrogen atoms available to...Read more about Novel Microwave Cavity for Resonant Cooling of a Lepton Plasma

Cyclotron-Cavity Mode Resonant Cooling in Single Component Electron Plasmas

April 9, 2016
Abstract: Generating cold (<50 K) single component electron plasmas is of critical importance to many experiments. Examples include optimizing recombination rates for antihydrogen or Rydberg atom production and producing mono-energetic beams. Replacing a section of a Penning-Malmberg trap with a...Read more about Cyclotron-Cavity Mode Resonant Cooling in Single Component Electron Plasmas