CERN Accelerating science

Article
Title AEgIS experiment: Towards antihydrogen beam production for antimatter gravity measurements
Author(s) Mariazzi, Sebastiano (Stefan Meyer Inst. Subatomare Phys.) ; Aghion, Stefano (INFN, Milan ; Milan Polytechnic) ; Amsler, Claude (Bern U., LHEP) ; Ariga, Akitaka (Bern U., LHEP) ; Ariga, Tomoko (Bern U., LHEP) ; Belov, Alexandre S (Moscow, INR) ; Bonomi, Germano (INFN, Pavia ; INFM, Brescia) ; Bräunig, Philippe (Kirchhoff Inst. Phys.) ; Brusa, Roberto S (Trento U. ; INFN, Trento) ; Bremer, Johan (CERN) ; Cabaret, Louis (Orsay) ; Canali, Carlo (Zurich U.) ; Caravita, Ruggero (Milan U. ; Milan Polytechnic) ; Castelli, Fabrizio (Milan U.) ; Cerchiari, Giovanni (Milan U. ; INFN, Milan) ; Cialdi, Simone (Milan U.) ; Comparat, Daniel (Orsay) ; Consolati, Giovanni (Milan Polytechnic ; INFN, Milan) ; Dassa, Luca (INFM, Brescia) ; Derking, Jan Hendrik (CERN) ; Di Domizio, Sergio (INFN, Genoa) ; Di Noto, Lea (Trento U. ; INFN, Trento) ; Doser, Michael (CERN) ; Dudarev, Alexey (CERN) ; Ereditato, Antonio (Bern U., LHEP) ; Ferragut, Rafael (INFN, Milan ; Milan Polytechnic) ; Fontana, Andrea (INFN, Pavia) ; Genova, Pablo (INFN, Pavia) ; Giammarchi, Marco (INFN, Milan) ; Gligorova, Angela (Bergen U.) ; Gninenko, Sergei N (Moscow, INR) ; Hogan, Stephen D (University Coll. London) ; Haider, Stefan (CERN) ; Jordan, Elena (Heidelberg, Max Planck Inst.) ; Jørgensen, Lars V (CERN) ; Kaltenbacher, Thomas (CERN) ; Kawada, Jiro (Bern U., LHEP) ; Kellerbauer, Alban (Heidelberg, Max Planck Inst.) ; Kimura, Mitsuhiro (Bern U., LHEP) ; Knecht, Andreas (CERN) ; Krasnický, Daniel (Genoa U. ; INFN, Genoa) ; Lagomarsino, Vittorio (Genoa U.) ; Lehner, Sebastian (Stefan Meyer Inst. Subatomare Phys.) ; Malbrunot, Chloe (CERN ; Stefan Meyer Inst. Subatomare Phys.) ; Matveev, Viktor A (Dubna, JINR ; Moscow, INR) ; Merkt, Frederic (Zurich, ETH) ; Moia, Fabio (INFN, Milan ; Milan Polytechnic) ; Nebbia, Giancarlo (INFN, Padua) ; Nédélec, Patrick (Lyon, IPN) ; Oberthaler, Markus K (Kirchhoff Inst. Phys.) ; Pacifico, Nicola (Bergen U.) ; Petráček, Vojtech (Bern U., LHEP) ; Pistillo, Ciro (Bern U., LHEP) ; Prelz, Francesco (INFN, Milan) ; Prevedelli, Marco (Bologna U.) ; Regenfus, Christian (Zurich U.) ; Riccardi, Cristina (Pavia U. ; INFN, Pavia) ; Røhne, Ole (Oslo U.) ; Rotondi, Alberto (Pavia U. ; INFN, Pavia) ; Sandaker, Heidi (Bergen U.) ; Scampoli, Paola (Naples U. ; Bern U., LHEP) ; Storey, James (Bern U., LHEP) ; Subieta Vasquez, Martin A. (INFN, Pavia ; INFM, Brescia) ; Spaček, Michal (INFN, Genoa) ; Czech Technical U. in Prague - FNSPE - B\oehova 7 - 11519 - Praha 1 - Czech Aff25 Testera, Gemma (INFN, Genoa) ; Vaccarone, Renzo (INFN, Genoa) ; Villa, Fabio (Milan U.) ; Widmann, Eberhard (Stefan Meyer Inst. Subatomare Phys.) ; Zavatarelli, Sandra (INFN, Genoa) ; Zmeskal, Johann (Bologna U. ; Stefan Meyer Inst. Subatomare Phys.)
Publication 2014
Number of pages 6
In: Eur. Phys. J. D 68 (2014) 41
DOI 10.1140/epjd/e2013-40690-3
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN AD ; AEGIS AD-6
Abstract AEgIS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) is an experiment that aims to perform the first direct measurement of the gravitational acceleration g of antihydrogen in the Earth’s field. A cold antihydrogen beam will be produced by charge exchange reaction between cold antiprotons and positronium excited in Rydberg states. Rydberg positronium (with quantum number n between 20 and 30) will be produced by a two steps laser excitation. The antihydrogen beam, after being accelerated by Stark effect, will fly through the gratings of a moir ́ e deflectometer. The deflection of the horizontal beam due to its free fall will be measured by a position sensitive detector. It is estimated that the detection of about 10 3 antihydrogen atoms is required to determine the gravitational acceleration with a precision of 1%. In this report an overview of the AEgIS experiment is presented and its current status is described. Details on the production of slow positronium and its excitation with lasers are discussed.

Corresponding record in: INSPIRE


 Записът е създаден на 2014-04-09, последна промяна на 2016-06-29