The GBAR experiment*
Gravitational behaviour of antihydrogen at rest
IRFU/SPP, CEA-Saclay, 91191
Received in final form: 28 October 2013
Published online: 20 February 2014
Measuring the gravitational behaviour of antimatter is a crucial test of the Weak Equivalence Principle. However, the gravitational force is so weak that the experiment requires a cooling of antimatter never achieved so far. The GBAR experiment aims to overcome this challenge using the anti-ion ; a high-intensity positron source has been developed for this purpose.
Key words: Topical issue: Electron and Positron Induced processes
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2014