Formation of a cold antihydrogen beam in AEGIS for gravity measurements

G. Testera, A. S. Belov, G. Bonomi, I. Boscolo, N. Brambilla, R. S. Brusa, V. M. Byakov, L. Cabaret, C. Canali, C. Carraro, F. Castelli, S. Cialdi, M. de Combarieu, D. Comparat, G. Consolati, N. Djourelov, M. Doser, G. Drobychev, A. Dupasquier, D. FabrisR. Ferragut, G. Ferrari, A. Fischer, A. Fontana, P. Forget, L. Formaro, M. Lunardon, A. Gervasini, M. G. Giammarchi, S. N. Gninenko, G. Gribakin, R. Heyne, S. D. Hogan, A. Kellerbauer, D. Krasnicky, V. Lagomarsino, G. Manuzio, S. Mariazzi, V. A. Matveev, F. Merkt, S. Moretto, C. Morhard, G. Nebbia, P. Nedelec, M. K. Oberthaler, P. Pari, V. Petracek, M. Prevedelli, I. Y. Al-Qaradawi, F. Quasso, O. Rohne, S. Pesente, A. Rotondi, S. Stapnes, D. Sillou, S. V. Stepanov, H. H. Stroke, G. Tino, A. Vairo, G. Viesti, H. Walters, U. Warring, S. Zavatarelli, A. Zenoni, D. S. Zvezhinskij

    Research output: Contribution to journalArticlepeer-review


    The formation of the antihydrogen beam in the AEGIS experiment through the use of inhomogeneous electric fields is discussed and simulation results including the geometry of the apparatus and realistic hypothesis about the antihydrogen initial conditions are shown. The resulting velocity distribution matches the requirements of the gravity experiment. In particular it is shown that the inhomogeneous electric fields provide radial cooling of the beam during the acceleration.

    Original languageEnglish (US)
    Pages (from-to)5-15
    Number of pages11
    JournalAIP Conference Proceedings
    StatePublished - 2008


    • Antihydrogen
    • Equivalence principle
    • Rydberg atoms

    ASJC Scopus subject areas

    • General Physics and Astronomy


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