Probing antimatter gravity - The AEGIS experiment at CERN

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F16%3A00306536" target="_blank" >RIV/68407700:21340/16:00306536 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1051/epjconf/201612602016" target="_blank" >http://dx.doi.org/10.1051/epjconf/201612602016</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/201612602016" target="_blank" >10.1051/epjconf/201612602016</a>

Result language

angličtina

Original language name

Probing antimatter gravity - The AEGIS experiment at CERN

Original language description

The weak equivalence principle states that the motion of a body in a gravitational field is independent of its structure or composition. This postulate of general relativity has been tested to very high precision with ordinary matter, but no relevant experimental verification with antimatter has ever been carried out. The AEGIS experiment will measure the gravitational acceleration of antihydrogen to ultimately 1% precision. For this purpose, a pulsed horizontal antihydrogen beam with a velocity of several 100 m s(-1) will be produced. Its vertical deflection due to gravity will be detected by a setup consisting of material gratings coupled with a position-sensitive detector, operating as a moire deflectometer or an atom interferometer. The AEGIS experiment is installed at CERN's Antiproton Decelerator, currently the only facility in the world which produces copious amounts of low-energy antiprotons. The construction of the setup has been going on since 2010 and is nearing completion. A proof-of-principle experiment with antiprotons has demonstrated that the deflection of antiparticles by a few mu m due to an external force can be detected. Technological and scientific development pertaining to specific challenges of the experiment, such as antihydrogen formation by positronium charge exchange or the position-sensitive detection of antihydrogen annihilations, is ongoing.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

JB - Sensors, detecting elements, measurement and regulation

OECD FORD branch

—

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

EPJ Web of Conferences

ISBN

—

ISSN

2100-014X

e-ISSN

—

Number of pages

10

Pages from-to

—

Publisher name

EDP Sciences

Place of publication

Les Ulis Cedex A

Event location

Creete

Event date

Aug 23, 2015

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000389712600018