ATRAP - On the way to trapped antihydrogen

D. Grzonka*, D. Comeau, G. Gabrielse, F. Goldenbaum, T. W. Hänsch, E. A. Hessels, P. Larochelle, D. Lesage, B. Levitt, W. Oelert, H. Pittner, T. Sefzick, A. Speck, C. H. Storry, J. Walz, Z. Zhang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The ATRAP experiment at the CERN antiproton decelerator AD aims for a test of the CPT invariance by a high precision comparison of the 1s-2s transition in the hydrogen and the antihydrogen atom. Antihydrogen production is routinely operated at ATRAP and detailed studies have been performed in order to optimize the production efficiency of useful antihydrogen. The shape parameters of the antiproton and positron clouds, the n-state distribution of the produced Rydberg antihydrogen atoms and the antihydrogen velocity have been studied. Furthermore an alternative method of laser controlled antihydrogen production was successfully applied. For high precision measurements of atomic transitions cold antihydrogen in the ground state is required which must be trapped due to the low number of available antihydrogen atoms compared to the cold hydrogen beam used for hydrogen spectroscopy. To ensure a reasonable antihydrogen trapping efficiency a magnetic trap has to be superposed the nested Penning trap. First trapping tests of charged particles within a combined magnetic/Penning trap have started at ATRAP.

Original languageEnglish (US)
Title of host publicationPHYSICS WITH ULTRA SLOW ANTIPROTON BEAMS
Pages122-135
Number of pages14
DOIs
StatePublished - Oct 19 2005
EventPHYSICS WITH ULTRA SLOW ANTIPROTON BEAMS - Wako, Japan
Duration: Mar 14 2005Mar 16 2005

Publication series

NameAIP Conference Proceedings
Volume793
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherPHYSICS WITH ULTRA SLOW ANTIPROTON BEAMS
CountryJapan
CityWako
Period3/14/053/16/05

Keywords

  • Antihydrogen
  • Laser controlled recombination
  • Nested trap

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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