Hyperfine Interactions

, Volume 212, Issue 1–3, pp 81–90 | Cite as

Progress towards microwave spectroscopy of trapped antihydrogen

  • Mohammad D. Ashkezari
  • Gorm B. Andresen
  • Marcelo Baquero-Ruiz
  • Wil Bertsche
  • Paul D. Bowe
  • Eoin Butler
  • Claudio L. Cesar
  • Steve Chapman
  • Michael Charlton
  • Adam Deller
  • Stefan Eriksson
  • Joel Fajans
  • Tim Friesen
  • Makoto C. Fujiwara
  • Dave R. Gill
  • Andrea Gutierrez
  • Jeffrey S. Hangst
  • Walter N. Hardy
  • Ryugo S. Hayano
  • Michael E. Hayden
  • Andrew J. Humphries
  • Richard Hydomako
  • Svante Jonsell
  • Lenoid Kurchaninov
  • Niels Madsen
  • Scott Menary
  • Paul Nolan
  • Konstantin Olchanski
  • Art Olin
  • Alex Povilus
  • Petteri Pusa
  • Francis Robicheaux
  • Eli Sarid
  • Daniel M. Silveira
  • Chukman So
  • James W. Storey
  • Robert I. Thompson
  • Dirk P. van der Werf
  • Jonathan S. Wurtele
  • Yasunori Yamazaki
  • ALPHA Collaboration
Article

Abstract

Precision comparisons of hyperfine intervals in atomic hydrogen and antihydrogen are expected to yield experimental tests of the CPT theorem. The CERN-based ALPHA collaboration has initiated a program of study focused on microwave spectroscopy of trapped ground-state antihydrogen atoms. This paper outlines some of the proposed experiments, and summarizes measurements that characterize microwave fields that have been injected into the ALPHA apparatus.

Keywords

Antihydrogen CPT Hyperfine splitting Penning-Malmberg trap Neutral atom trap 

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Mohammad D. Ashkezari
    • 1
  • Gorm B. Andresen
    • 2
  • Marcelo Baquero-Ruiz
    • 3
  • Wil Bertsche
    • 4
  • Paul D. Bowe
    • 2
  • Eoin Butler
    • 5
  • Claudio L. Cesar
    • 6
  • Steve Chapman
    • 3
  • Michael Charlton
    • 4
  • Adam Deller
    • 4
  • Stefan Eriksson
    • 4
  • Joel Fajans
    • 3
  • Tim Friesen
    • 7
  • Makoto C. Fujiwara
    • 7
    • 8
  • Dave R. Gill
    • 8
  • Andrea Gutierrez
    • 9
  • Jeffrey S. Hangst
    • 2
  • Walter N. Hardy
    • 9
  • Ryugo S. Hayano
    • 10
  • Michael E. Hayden
    • 1
  • Andrew J. Humphries
    • 4
  • Richard Hydomako
    • 7
  • Svante Jonsell
    • 11
  • Lenoid Kurchaninov
    • 8
  • Niels Madsen
    • 4
  • Scott Menary
    • 12
  • Paul Nolan
    • 13
  • Konstantin Olchanski
    • 8
  • Art Olin
    • 8
  • Alex Povilus
    • 3
  • Petteri Pusa
    • 13
  • Francis Robicheaux
    • 14
  • Eli Sarid
    • 15
  • Daniel M. Silveira
    • 16
    • 17
  • Chukman So
    • 3
  • James W. Storey
    • 8
  • Robert I. Thompson
    • 7
  • Dirk P. van der Werf
    • 4
  • Jonathan S. Wurtele
    • 3
  • Yasunori Yamazaki
    • 16
    • 17
  • ALPHA Collaboration
  1. 1.Department of PhysicsSimon Fraser UniversityBurnabyCanada
  2. 2.Department of Physics and AstronomyAarhus UniversityAarhus CDenmark
  3. 3.Department of PhysicsUniversity of CaliforniaBerkeleyUSA
  4. 4.Department of PhysicsSwansea UniversitySwanseaUK
  5. 5.Physics DepartmentCERNGeneva 23Switzerland
  6. 6.Instituto de FísicaUniversidade Federal do Rio de JaneiroRio de JaneiroBrazil
  7. 7.Department of Physics and AstronomyUniversity of CalgaryCalgaryCanada
  8. 8.TRIUMFVancouverCanada
  9. 9.Department of Physics and AstronomyUniversity of British ColumbiaVancouverCanada
  10. 10.Department of PhysicsUniversity of TokyoTokyoJapan
  11. 11.FysikumStockholm UniversityStockholmSweden
  12. 12.Department of Physics and AstronomyYork UniversityTorontoCanada
  13. 13.Department of PhysicsUniversity of LiverpoolLiverpoolUK
  14. 14.Department of PhysicsAuburn UniversityAuburnUSA
  15. 15.Department of PhysicsNRCN-Nuclear Research Center NegevBeer ShevaIsrael
  16. 16.Atomic Physics LaboratoryRIKEN Advanced Science InstituteWakoJapan
  17. 17.Graduate School of Arts and SciencesUniversity of TokyoTokyoJapan
  18. 18.Physik-InstitutZurich UniversityZurichSwitzerland

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