A magnetic trap for antihydrogen confinement

W. Bertsche, A. Boston, P. D. Bowe, C. L. Cesar, S. Chapman, M. Charlton, M. Chartier, A. Deutsch, J. Fajans, M. C. Fujiwara, R. Funakoshi, K. Gomberoff, J. S. Hangst, R. S. Hayano, M. J. Jenkins, L. V. Jørgensen, P. Ko, N. Madsen, P. Nolan, R. D. PageL. G.C. Posada, A. Povilus, E. Sarid, D. M. Silveira, D. P. van der Werf, Y. Yamazaki, B. Parker, J. Escallier, A. Ghosh

Research output: Contribution to journalArticlepeer-review

67 Scopus citations


The goal of the ALPHA collaboration at CERN is to test CPT conservation by comparing the 1S-2S transitions of hydrogen and antihydrogen. To reach the ultimate accuracy of 1 part in 1018, the (anti)atoms must be trapped. Using current technology, only magnetic minimum traps can confine (anti)hydrogen. In this paper, the design of the ALPHA antihydrogen trap and the results of measurements on a prototype system will be presented. The trap depth of the final system will be 1.16 T, corresponding to a temperature of 0.78 K for ground state antihydrogen.

Original languageEnglish
Pages (from-to)746-756
Number of pages11
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number2
StatePublished - 15 Oct 2006
Externally publishedYes


  • Antihydrogen
  • Antiprotons
  • Neutral trap
  • Penning trap
  • Positrons

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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