Hyperfine Interactions

, Volume 212, Issue 1–3, pp 101–107 | Cite as

Alternative method for reconstruction of antihydrogen annihilation vertices

  • C. Amole
  • M. D. Ashkezari
  • G. B. Andresen
  • M. Baquero-Ruiz
  • W. Bertsche
  • P. D. Bowe
  • E. Butler
  • C. L. Cesar
  • S. Chapman
  • M. Charlton
  • A. Deller
  • S. Eriksson
  • J. Fajans
  • T. Friesen
  • M. C. Fujiwara
  • D. R. Gill
  • A. Gutierrez
  • J. S. Hangst
  • W. N. Hardy
  • R. S. Hayano
  • M. E. Hayden
  • A. J. Humphries
  • R. Hydomako
  • S. Jonsell
  • L. Kurchaninov
  • N. Madsen
  • S. Menary
  • P. Nolan
  • K. Olchanski
  • A. Olin
  • A. Povilus
  • P. Pusa
  • F. Robicheaux
  • E. Sarid
  • D. M. Silveira
  • C. So
  • J. W. Storey
  • R. I. Thompson
  • D. P. van der Werf
  • J. S. Wurtele
  • Y. Yamazaki
  • ALPHA Collaboration
Article

Abstract

The ALPHA experiment, located at CERN, aims to compare the properties of antihydrogen atoms with those of hydrogen atoms. The neutral antihydrogen atoms are trapped using an octupole magnetic trap. The trap region is surrounded by a three layered silicon detector used to reconstruct the antiproton annihilation vertices. This paper describes a method we have devised that can be used for reconstructing annihilation vertices with a good resolution and is more efficient than the standard method currently used for the same purpose.

Keywords

Antihydrogen Vertexing Vertex reconstruction Track reconstruction Silicon detector Helix trajectory 

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References

  1. 1.
    Andresen, G.B., et al. (ALPHA Collaboration): Search for trapped antihydrogen. Phys. Lett. B 695, 95–104 (2011)ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • C. Amole
    • 1
  • M. D. Ashkezari
    • 2
  • G. B. Andresen
    • 3
  • M. Baquero-Ruiz
    • 4
  • W. Bertsche
    • 5
  • P. D. Bowe
    • 3
  • E. Butler
    • 6
  • C. L. Cesar
    • 7
  • S. Chapman
    • 4
  • M. Charlton
    • 5
  • A. Deller
    • 5
  • S. Eriksson
    • 5
  • J. Fajans
    • 4
  • T. Friesen
    • 8
  • M. C. Fujiwara
    • 8
    • 9
  • D. R. Gill
    • 9
  • A. Gutierrez
    • 10
  • J. S. Hangst
    • 3
  • W. N. Hardy
    • 10
  • R. S. Hayano
    • 11
  • M. E. Hayden
    • 2
  • A. J. Humphries
    • 5
  • R. Hydomako
    • 8
  • S. Jonsell
    • 12
  • L. Kurchaninov
    • 9
  • N. Madsen
    • 5
  • S. Menary
    • 1
  • P. Nolan
    • 13
  • K. Olchanski
    • 9
  • A. Olin
    • 9
  • A. Povilus
    • 4
  • P. Pusa
    • 13
  • F. Robicheaux
    • 14
  • E. Sarid
    • 15
  • D. M. Silveira
    • 16
    • 17
  • C. So
    • 4
  • J. W. Storey
    • 9
  • R. I. Thompson
    • 8
  • D. P. van der Werf
    • 5
  • J. S. Wurtele
    • 4
  • Y. Yamazaki
    • 16
    • 17
  • ALPHA Collaboration
  1. 1.Department of Physics and AstronomyYork UniversityTorontoCanada
  2. 2.Department of PhysicsSimon Fraser UniversityBurnabyCanada
  3. 3.Department of Physics and AstronomyAarhus UniversityAarhus CDenmark
  4. 4.Department of PhysicsUniversity of CaliforniaBerkeleyUSA
  5. 5.Department of PhysicsSwansea UniversitySwanseaUK
  6. 6.Physics DepartmentCERNGeneva 23Switzerland
  7. 7.Instituto de FísicaUniversidade Federal do Rio de JaneiroRio de JaneiroBrazil
  8. 8.Department of Physics and AstronomyUniversity of CalgaryCalgaryCanada
  9. 9.TRIUMFVancouverCanada
  10. 10.Department of Physics and AstronomyUniversity of British ColumbiaVancouverCanada
  11. 11.Department of PhysicsUniversity of TokyoTokyoJapan
  12. 12.FysikumStockholm UniversityStockholmSweden
  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

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