Probing antimatter gravity – The AEGIS experiment at CERN
Creators
- Kellerbauer, A.1
- Aghion, S.2, 3
- Amsler, C.4
- Ariga, A.4
- Ariga, T.4
- Bonomi, G.5, 6
- Bräunig, P.7
- Bremer, J.8
- Brusa, R. S.9, 10
- Cabaret, L.11
- Caccia, M.12, 2
- Caravita, R.13, 14
- Castelli, F.15, 2
- Cerchiari, G.1
- Chlouba, K.15
- Cialdi, S.15, 2
- Comparat, D.11
- Consolati, G.2, 3
- Demetrio, A.7
- Noto, L. Di13, 14
- Doser, M.8
- Dudarev, A.8
- Ereditato, A.4
- Evans, C.2, 3
- Ferragut, R.2, 3
- Fesel, J.8
- Fontana, A.5
- Gerber, S.8
- Giammarchi, M.2
- Gligorova, A.16
- Guatieri, F.9, 10
- Haider, S.8
- Holmestad, H.17
- Huse, T.17
- Jordan, E.1
- Kimura, M.4
- Koettig, T.8
- Krasnický, D.13
- Lagomarsino, V.13, 14
- Lansonneur, P.18
- Lebrun, P.18
- Lehner, S.19
- Liberadzka, J.8
- Malbrunot, C.19, 8
- Mariazzi, S.19
- Matveev, V.20, 21
- Mazzotta, Z.15, 2
- Nebbia, G.22
- Nédélec, P.18
- Oberthaler, M.7
- Pacifico, N.16
- Pagano, D.5, 6
- Penasa, L.9, 10
- Petráček, V.23
- Pistillo, C.24
- Prelz, F.2
- Prevedelli, M.25
- Ravelli, L.9, 10
- Rienäcker, B.8
- Røhne, O.M.17
- Rotondi, A.26, 5
- Sacerdoti, M.15, 2
- Sandaker, H.17
- Santoro, R.12, 2
- Scampoli, P.27, 24
- Smestad, L.28, 8
- Sorrentino, F.13, 14
- Špaček, M.23
- Storey, J.24
- Strojek, I.M.23
- Testera, G.13
- Tietje, I.29, 8
- Widmann, E.19
- Yzombard, P.11
- Zavatarelli, S.13
- Zmeskal, J.19
- Zurlo, N.30, 5
- AEGIS Collaboration
- 1. Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany)
- 2. INFN Milano, via Celoria 16, 20133 Milano (Italy)
- 3. Politecnico of Milano, Piazza Leonardo da Vinci 32, 20133 Milano (Italy)
- 4. Laboratory for High Energy Physics, Albert Einstein Center for Fundamental Physics, University of Bern, 3012 Bern (Switzerland)
- 5. INFN Pavia, via Bassi 6, 27100 Pavia (Italy)
- 6. Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, 25123 Brescia (Italy)
- 7. Kirchhoff-Institut für Physik, University of Heidelberg, Im Neuenheimer Feld 227, 69120 Heidelberg (Germany)
- 8. Physics Department, CERN, 1211 Geneva 23 (Switzerland)
- 9. TIFPA/INFN Trento, via Sommarive 14, 38123 Povo, Trento (Italy)
- 10. Department of Physics, University of Trento, via Sommarive 14, 38123 Povo, Trento (Italy)
- 11. Laboratoire Aimé Cotton, University Paris-Sud, 91405 Orsay Cedex (France)
- 12. Department of Science, University of Insubria, via Valleggio 11, 22100 Como (Italy)
- 13. INFN Genova, via Dodecaneso 33, 16146 Genova (Italy)
- 14. Department of Physics, University of Genova, via Dodecaneso 33, 16146 Genova (Italy)
- 15. Department of Physics, University of Milano, via Celoria 16, 20133 Milano (Italy)
- 16. Institute of Physics and Technology, University of Bergen, Allégaten 55, 5007 Bergen (Norway)
- 17. Department of Physics, University of Oslo, Sem Sælandsvei 24, 0371 Oslo (Norway)
- 18. Institute of Nuclear Physics, CNRS/IN2p3, University of Lyon 1, 69622 Villeurbanne (France)
- 19. Stefan Meyer Institute for Subatomic Physics, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna (Austria)
- 20. Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation)
- 21. Institute for Nuclear Research of the Russian Academy of Science, 117312 Moscow (Russian Federation)
- 22. INFN Padova, via Marzolo 8, 35131 Padova (Italy)
- 23. Czech Technical University, Prague, Brehová 7, 11519 Prague 1 Czech Republic (CZ)
- 24. Laboratory for High Energy Physics, Albert Einstein Center for Fundamental Physics, University of Bern, 3012 Bern (CH)
- 25. University of Bologna, viale Berti Pichat 6/2, 40126 Bologna (Italy)
- 26. Department of Physics, University of Pavia, via Bassi 6, 27100 Pavia (Italy)
- 27. Department of Physics, University of Napoli Federico II, Complesso Universitario di Monte S. Angelo, 80126 Napoli (Italy)
- 28. Research Council of Norway, Drammensveien 288, 0283 Oslo (Norway)
- 29. Physics Department, Technical University Berlin, Straße des 17. Juni 135, 10623 Berlin (Germany)
- 30. Department of Civil Engineering, University of Brescia, via Branze 43, 25123 Brescia (Italy)
Description
The weak equivalence principle states that the motion of a body in a gravitational field is independent of its structure or composition. This postulate of general relativity has been tested to very high precision with ordinary matter, but no relevant experimental verification with antimatter has ever been carried out. The AEGIS experiment will measure the gravitational acceleration of antihydrogen to ultimately 1% precision. For this purpose, a pulsed horizontal antihydrogen beam with a velocity of several 100 m s−1 will be produced. Its vertical deflection due to gravity will be detected by a setup consisting of material gratings coupled with a position-sensitive detector, operating as a moiré deflectometer or an atom interferometer. The AEGIS experiment is installed at CERN's Antiproton Decelerator, currently the only facility in the world which produces copious amounts of low-energy antiprotons. The construction of the setup has been going on since 2010 and is nearing completion. A proof-of-principle experiment with antiprotons has demonstrated that the deflection of antiparticles by a few μm due to an external force can be detected. Technological and scientific development pertaining to specific challenges of the experiment, such as antihydrogen formation by positronium charge exchange or the position-sensitive detection of antihydrogen annihilations, is ongoing
Availability note (English)
Available from http://www.epj-conferences.org/articles/epjconf/pdf/2016/21/epjconf_icnfp2016_02016.pdf; https://doaj.org/article/3189c9a15222412ba433c0d60c5e0474; http://dx.doi.org/10.1051/epjconf/201612602016Additional details
Identifiers
Publishing Information
- Journal Title
- EPJ. Web of Conferences
- Journal Volume
- 126
- Journal Page Range
- 02016 p.
- ISSN
- 2100-014X
Conference
- Title
- 4. International Conference on New Frontiers in Physics
- Dates
- 23-30 Aug 2015
- Place
- Crete (Greece)
INIS
- Country of Publication
- France
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 48007709
- Subject category
- S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ANTIPROTONS; CERN; CHARGE EXCHANGE; DETECTION; EQUIVALENCE PRINCIPLE; EXPERIMENT PLANNING; GENERAL RELATIVITY THEORY; GRAVITATIONAL FIELDS; POSITION SENSITIVE DETECTORS; POSITRONIUM
- Descriptors DEC
- ANTIBARYONS; ANTIMATTER; ANTINUCLEI; ANTINUCLEONS; ANTIPARTICLES; BARYONS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; HADRONS; INTERNATIONAL ORGANIZATIONS; MATTER; MEASURING INSTRUMENTS; NUCLEI; NUCLEONS; PLANNING; PROTONS; RADIATION DETECTORS; RELATIVITY THEORY
Optional Information
- Copyright
- Copyright (c) 2016 The Authors. Published by EDP Sciences
- Collaborations
- AEGIS Collaboration