Illuminating Antimatter: the ALPHA antihydrogen experiment at CERN

Seminar
Colloquium
QUEST Center event
No
Speaker
Jeff Hangst, Aarhus Univesity and ALPHA collaboration
Date
12/04/2021 - 21:00 - 19:00Add to Calendar 2021-04-12 19:00:00 2021-04-12 21:00:00 Illuminating Antimatter: the ALPHA antihydrogen experiment at CERN Zoom Details:  Meeting ID: 951 7512 2285,    Password: 071333 Add to Calendar The ALPHA experiment at the Antiproton Decelerator is unique in its combined ability to produce, trap, and study atoms of antihydrogen - the simplest anti-atom. The Standard Model requires that hydrogen and antihydrogen have the same spectrum.  Transition frequencies in hydrogen can be measured with precisions of order 10-15.  The precision in antihydrogen at ALPHA is now of order 10-12, making atom/anti-atom comparisons among the most precise, direct tests of fundamental symmetries in Nature.  Also of fundamental interest is the gravitational behaviour of antimatter, the study of which is the goal of the new ALPHA-g experiment. I will discuss the decades of development necessary to achieve the latest groundbreaking results in ALPHA. Among the latter is the demonstration of laser cooling of antihydrogen, published last week in Nature.  I will then consider the future of spectroscopy and gravitational studies with antihydrogen in the era of CERN’s brand-new ELENA facility, which will deliver antiprotons to us in August of 2021. Zoom Department of Physics physics.dept@mail.biu.ac.il Asia/Jerusalem public
Place
Zoom
Abstract

Zoom Details:  Meeting ID: 951 7512 2285,    Password: 071333

Add to Calendar

The ALPHA experiment at the Antiproton Decelerator is unique in its combined ability to produce, trap, and study atoms of antihydrogen - the simplest anti-atom. The Standard Model requires that hydrogen and antihydrogen have the same spectrum.  Transition frequencies in hydrogen can be measured with precisions of order 10-15.  The precision in antihydrogen at ALPHA is now of order 10-12, making atom/anti-atom comparisons among the most precise, direct tests of fundamental symmetries in Nature.  Also of fundamental interest is the gravitational behaviour of antimatter, the study of which is the goal of the new ALPHA-g experiment. I will discuss the decades of development necessary to achieve the latest groundbreaking results in ALPHA. Among the latter is the demonstration of laser cooling of antihydrogen, published last week in Nature.  I will then consider the future of spectroscopy and gravitational studies with antihydrogen in the era of CERN’s brand-new ELENA facility, which will deliver antiprotons to us in August of 2021.

Last Updated Date : 05/12/2022