CERN Accelerating science

Article
Title	Antihydrogen physics: gravitation and spectroscopy in AEgIS
Author(s)	Ferragut, R (Milan Polytechnic ; INFN, Milan) ; Vaccarone, R (Genoa U. ; INFN, Genoa) ; Stroke, H H (New York U.) ; Dassa, L (Pavia U. ; INFN, Pavia) ; Rohne, O (Oslo U.) ; Hogan, S D (Zurich, ETH) ; Cialdi, S (Milan U. ; INFN, Milan) ; Al-Qaradawi, I Y (Qatar U.) ; Formaro, L (Milan U. ; INFN, Milan) ; Sandaker, H (Bergen U.) ; Testera, G (Genoa U. ; INFN, Genoa) ; Stepanov, S V (U. Paris-Sud 11, Dept. Phys., Orsay) ; Folegati, P (Milan Polytechnic) ; Morhard, C (Heidelberg, Max Planck Inst.) ; Warring, U (Heidelberg, Max Planck Inst.) ; Prelz, F (INFN, Milan) ; Belov, A S (Moscow, INR) ; Bonomi, G (Pavia U. ; INFN, Pavia) ; Consolati, G (Milan Polytechnic ; INFN, Milan) ; Ferrari, G (Florence U. ; INFN, Florence) ; Lagomarsino, V (Genoa U. ; INFN, Genoa) ; Krasnicky, D (Genoa U. ; INFN, Genoa) ; Drobychev, G (Annecy, LAPP) ; Giammarchi, M G (INFN, Milan) ; Heyne, R (Heidelberg, Max Planck Inst.) ; Zenoni, A (Pavia U. ; INFN, Pavia) ; Castelli, F (Milan U. ; INFN, Milan) ; Mariazzi, S (Trento U.) ; Cabaret, L (U. Paris-Sud 11, Dept. Phys., Orsay) ; Fischer, A (Heidelberg, Max Planck Inst.) ; Boscolo, I (Milan U. ; INFN, Milan) ; Sillou, D (Annecy, LAPP) ; Villa, F (Milan U. ; INFN, Milan) ; Perini, D (CERN) ; Djourelov, N (Sofiya, Inst. Nucl. Res.) ; Zavatarelli, S (Genoa U. ; INFN, Genoa) ; Oberthaler, M K (Kirchhoff Inst. Phys.) ; Manuzio, G (Genoa U. ; INFN, Genoa) ; Carraro, C (Genoa U. ; INFN, Genoa) ; Matveev, V A (Moscow, INR) ; Jorgensen, L V (Qatar U.) ; Nedelec, P (Annecy, LAPP) ; Prevedelli, M (Florence U. ; INFN, Florence) ; Comparat, D (U. Paris-Sud 11, Dept. Phys., Orsay) ; Dupasquier, A (Milan Polytechnic) ; Turbabin, A V (Moscow, INR) ; Zvezhinskij, D S (U. Paris-Sud 11, Dept. Phys., Orsay) ; Fontana, A (Pavia U. ; INFN, Pavia) ; Kellerbauer, A (Heidelberg, Max Planck Inst.) ; Canali, C (Genoa U. ; INFN, Genoa) ; Dudarev, A (CERN) ; Petracek, V (Prague, Tech. U.) ; Riccardi, C (Pavia U. ; INFN, Pavia) ; Nebbia, G (Padua U. ; INFN, Padua) ; Gninenko, S N (Moscow, INR) ; Brusa, R S (Trento U.) ; Rotondi, A (Pavia U. ; INFN, Pavia) ; Sacerdoti, M (Milan U.) ; Calloni, A (Milan Polytechnic) ; Doser, M (CERN) ; Byakov, V M (Moscow, ITEP) ; Quasso, F (Milan Polytechnic) ; Trezzi, D (Milan U. ; INFN, Milan)
Publication	2011
Note	International Conference on Precision Physics of Simple Atomic Systems, Ecole de Physique, les Houches, FRANCE, MAY 30-JUN 04, 2010
In:	Can. J. Phys. 89 (2011) 17-24
In:	Ecole de Physique: International Conference on Precision Physics of Simple Atomic Systems, Les Houches, France, 30 May - 04 Jun 2010, pp.17-24
DOI	10.1139/P10-099
Subject category	Nuclear Physics - Experiment
Abstract	AEgIS (Antimatter experiment: gravity, interferometry, spectroscopy) is an experiment approved by CERN with the goal of studying antihydrogen physics. In AEgIS, antihydrogen will be produced by charge exchange reactions of cold antiprotons with positronium atoms excited in a Rydberg state (n > 20). In the first phase of the experiment, controlled acceleration by an electric field gradient (Stark effect) and subsequent measurement of free fall in a Moire deflectometer will allow a test of the weak equivalence principle. In a second phase, the antihydrogen will be slowed, confined, and laser-cooled to perform CPT studies and detailed spectroscopy. In the present work, after a general description of the experiment, the present status of advancement will be reviewed, with special attention to the production and excitation of positronium atoms.

Corresponding record in: Inspire