Hyperfine Interactions

, Volume 209, Issue 1–3, pp 35–41 | Cite as

Synthesis of antihydrogen atoms in a CUSP trap

  • Naofumi Kuroda
  • Yoshinori Enomoto
  • Koji Michishio
  • Chanhyoun Kim
  • Hiroyuki Higaki
  • Yugo Nagata
  • Yasuyuki Kanai
  • Hiroyuki A. Torii
  • Maurizzio Corradini
  • Marco Leali
  • Evandro Lodi-Rizzini
  • Valerio Mascagna
  • Luca Venturelli
  • Nicola Zurlo
  • Koki Fujii
  • Miki Ohtsuka
  • Kazuo Tanaka
  • Hiroshi Imao
  • Yasuyuki Nagashima
  • Yasuyuki Matsuda
  • Bertalan Juhász
  • Eberhard Widmann
  • Akihiro Mohri
  • Yasunori Yamazaki
Article

Abstract

ASACUSA collaboration has been making a path to realize high precision microwave spectroscopy of ground-state hyperfine transitions of antihydrogen atom in flight for stringent test of the CPT symmetry. Recently, we have succeeded in synthesizing our first cold antihydrogen atoms employing a CUSP trap. It is expected that synthesized antihydrogen atoms in the low-field-seeking states are preferentially focused along the cusp magnetic field axis whereas those in the high-field-seeking states are not focused, resulting in the formation of a spin-polarized antihydrogen beam. We report the recent results of antihydrogen atom synthesis and beam production developed with the CUSP trap.

Keywords

Antihydrogen CPT invariance Atomic beam Hyperfine splitting 

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Naofumi Kuroda
    • 1
  • Yoshinori Enomoto
    • 2
  • Koji Michishio
    • 3
  • Chanhyoun Kim
    • 1
  • Hiroyuki Higaki
    • 4
  • Yugo Nagata
    • 2
  • Yasuyuki Kanai
    • 2
  • Hiroyuki A. Torii
    • 1
  • Maurizzio Corradini
    • 5
  • Marco Leali
    • 5
  • Evandro Lodi-Rizzini
    • 5
  • Valerio Mascagna
    • 5
  • Luca Venturelli
    • 5
  • Nicola Zurlo
    • 5
  • Koki Fujii
    • 1
  • Miki Ohtsuka
    • 1
  • Kazuo Tanaka
    • 1
  • Hiroshi Imao
    • 6
  • Yasuyuki Nagashima
    • 3
  • Yasuyuki Matsuda
    • 1
  • Bertalan Juhász
    • 7
  • Eberhard Widmann
    • 7
  • Akihiro Mohri
    • 2
  • Yasunori Yamazaki
    • 2
  1. 1.Graduate School of Arts and SciencesUniversity of TokyoTokyoJapan
  2. 2.RIKEN Advanced Science InstituteSaitamaJapan
  3. 3.Department of PhysicsTokyo University of ScienceTokyoJapan
  4. 4.Graduate School of Advanced Science of MatterHiroshima UniversityHiroshimaJapan
  5. 5.Dipartimento di Chimica e Fisica per l’Ingegneria e per i MaterialiUniversità di Brescia & Instituto Nazionale di Fisica NucleareBresciaItaly
  6. 6.RIKEN Nishina Center for Accelerator-Based ScienceSaitamaJapan
  7. 7.Stefan Meyer Institut für Subatomare PhysikWienAustria

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