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.
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. Fabris, R. 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 (AIP CONFERENCE PROCEEDINGS). - In: Proceedings of the workshop on cold antimatter plasmas and application to fundamental physics : Okinawa, Japan, 20-22 February 2008 / [a cura di] Y. Kanai, Y. Yamazaki. - Melville : American institute of physics, 2008. - ISBN 9780735405615. - pp. 5-15 (( convegno Workshop on Cold antimatter plasmas and application to fundamental physics tenutosi a Okinawa (Japan) nel 2008 [10.1063/1.2977857].
Formation of a cold antihydrogen beam in AEGIS for gravity measurements
I. Boscolo;N. Brambilla;F. Castelli;S. Cialdi;L. Formaro;A. Gervasini;A. Vairo;
2008
Abstract
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.
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