Production of antihydrogen atoms by 6 keV antiprotons through a positronium cloud
Loading...
Author / Producer
Date
2023-11
Publication Type
Journal Article
ETH Bibliography
yes
Citations
Altmetric
Data
Rights / License
Abstract
We report on the first production of an antihydrogen beam by charge exchange of 6.1 keV antiprotons with a cloud of positronium in the GBAR experiment at CERN. The 100 keV antiproton beam delivered by the AD/ELENA facility was further decelerated with a pulsed drift tube. A 9 MeV electron beam from a linear accelerator produced a low energy positron beam. The positrons were accumulated in a set of two Penning–Malmberg traps. The positronium target cloud resulted from the conversion of the positrons extracted from the traps. The antiproton beam was steered onto this positronium cloud to produce the antiatoms. We observe an excess over background indicating antihydrogen production with a significance of 3–4 standard deviations.
Permanent link
Publication status
published
Editor
Book title
Journal / series
Volume
83 (11)
Pages / Article No.
1004
Publisher
Springer
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Organisational unit
08718 - Crivelli, Paolo (Tit.-Prof.)
Notes
An Erratum to this article was published on 12 November 2024: The erratum corrects a missing acknowledgement for a grant.
Funding
197346 - Study of Exotic Matter (SNF)
216673 - Gravitational Behaviour of Anti-hydrogen at Rest (GBAR) (SNF)
ETH-46 17-1 - Antihydrogen Lamb shift measurement (ETHZ)
216673 - Gravitational Behaviour of Anti-hydrogen at Rest (GBAR) (SNF)
ETH-46 17-1 - Antihydrogen Lamb shift measurement (ETHZ)
Related publications and datasets
Is referenced by: 10.1140/epjc/s10052-023-12244-wIs referenced by: 10.1140/epjc/s10052-023-12137-y