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Antihydrogen synthesis in a double-CUSP trap towards test of the CPT-symmetry

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Abstract

The aim of the ASACUSA-CUSP experiment at CERN is to produce a cold, polarised antihydrogen beam and perform a high precision measurement of the ground-state hyperfine transition frequency of the antihydrogen atom and compare it with that of the hydrogen atom using the same spectroscopic beam line. Towards this goal a significant step was successfully accomplished: synthesised antihydrogen atoms have been produced in a CUSP magnetic configuration and detected at the end of our spectrometer beam line in 2012 [1]. During a long shut down at CERN the ASACUSA-CUSP experiment had been renewed by introducing a new double-CUSP magnetic configuration and a new semi-cylindrical tracking detector (AMT) [2], and by improving the transport feature of low energy antiproton beams. The new tracking detector monitors the antihydrogen synthesis during the mixing cycle of antiprotons and positrons. In this work the latest results and improvements of the antihydrogen synthesis will be presented including highlights from the last beam time.

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References

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Author notes

  1. B. Radics

    Present address: Institute for Particle Physics, ETH Zürich, CH-8093, Zürich, Switzerland

Authors and Affiliations

  1. Atomic Physics Laboratory, RIKEN, Saitama, 351-0198, Japan

    B. Radics, D. J. Murtagh, Y. Nagata, S. Van Gorp, P. Dupre, Y. Kanai & Y. Yamazaki

  2. Institute of Physics, Graduate School of Arts and Sciences, University of Tokyo, Tokyo, 153-8902, Japan

    S. Ishikawa, N. Kuroda, M. Tajima, Y. Higashi & Y. Matsuda

  3. Graduate School of Advanced Sciences of Matter, Hiroshima University, Hiroshima, 739-8530, Japan

    Y. Abo, C. Kaga & H. Higaki

  4. Dipartimento di Ingegneria dell Informazione, Universita di Brescia, Brescia, 25133, Italy

    M. Leali, V. Mascagna, L. Venturelli, N. Zurlo & E. Lodi Rizzini

  5. Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Brescia, Brescia, 25133, Italy

    M. Leali, V. Mascagna, L. Venturelli, N. Zurlo & E. Lodi Rizzini

  6. CERN, Geneve, 1211, Switzerland

    H. Breuker

  7. Ulmer Initiative Research Unit, RIKEN, Saitama, 351-0198, Japan

    S. Ulmer

Authors
  1. B. Radics
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  2. S. Ishikawa
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  3. N. Kuroda
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  4. D. J. Murtagh
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  5. Y. Nagata
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  6. M. Tajima
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  7. S. Van Gorp
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  8. Y. Abo
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  9. P. Dupre
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  10. Y. Higashi
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  11. C. Kaga
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  12. M. Leali
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  13. V. Mascagna
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  14. L. Venturelli
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  15. N. Zurlo
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  16. H. Breuker
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  17. H. Higaki
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  18. Y. Kanai
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  19. E. Lodi Rizzini
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  20. Y. Matsuda
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  21. S. Ulmer
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  22. Y. Yamazaki
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Corresponding author

Correspondence to B. Radics.

Additional information

This article is part of the Topical Collection on Proceedings of the 6th International Symposium on Symmetries in Subatomic Physics (SSP 2015), Victoria, Canada, 8-12 June 2015

Edited by Michael Gericke and Gerald Gwinner

Grant-in-Aid for Specially Promoted Research (No. 24000008) of the Japan Society for the Promotion of Science (JSPS), and Pioneering Project of RIKEN, European Research Council under European Union?s Seventh Framework Programme (FP7/2007-2013)/ERC Grant agreement (291242), the Austrian Ministry of Science and Research, Austrian Science Fund (FWF) DK PI (W 1252), Universit‘a di Brescia and Istituto Nazionale di Fisica Nucleare.

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Radics, B., Ishikawa, S., Kuroda, N. et al. Antihydrogen synthesis in a double-CUSP trap towards test of the CPT-symmetry. Hyperfine Interact 237, 156 (2016). https://doi.org/10.1007/s10751-016-1368-4

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  • DOI: https://doi.org/10.1007/s10751-016-1368-4

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