Probing antimatter gravity – The AEGIS experiment at CERN
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 eve...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2016-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/201612602016 |
| _version_ | 1818655670965108736 |
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| author | Kellerbauer A. Aghion S. Amsler C. Ariga A. Ariga T. Bonomi G. Bräunig P. Bremer J. Brusa R. S. Cabaret L. Caccia M. Caravita R. Castelli F. Cerchiari G. Chlouba K. Cialdi S. Comparat D. Consolati G. Demetrio A. Di Noto L. Doser M. Dudarev A. Ereditato A. Evans C. Ferragut R. Fesel J. Fontana A. Gerber S. Giammarchi M. Gligorova A. Guatieri F. Haider S. Holmestad H. Huse T. Jordan E. Kimura M. Koettig T. Krasnický D. Lagomarsino V. Lansonneur P. Lebrun P. Lehner S. Liberadzka J. Malbrunot C. Mariazzi S. Matveev V. Mazzotta Z. Nebbia G. Nédélec P. Oberthaler M. Pacifico N. Pagano D. Penasa L. Petráček V. Pistillo C. Prelz F. Prevedelli M. Ravelli L. Rienäcker B. Røhne O.M. Rotondi A. Sacerdoti M. Sandaker H. Santoro R. Scampoli P. Smestad L. Sorrentino F. Špaček M. Storey J. Strojek I.M. Testera G. Tietje I. Widmann E. Yzombard P. Zavatarelli S. Zmeskal J. Zurlo N. |
| author_facet | Kellerbauer A. Aghion S. Amsler C. Ariga A. Ariga T. Bonomi G. Bräunig P. Bremer J. Brusa R. S. Cabaret L. Caccia M. Caravita R. Castelli F. Cerchiari G. Chlouba K. Cialdi S. Comparat D. Consolati G. Demetrio A. Di Noto L. Doser M. Dudarev A. Ereditato A. Evans C. Ferragut R. Fesel J. Fontana A. Gerber S. Giammarchi M. Gligorova A. Guatieri F. Haider S. Holmestad H. Huse T. Jordan E. Kimura M. Koettig T. Krasnický D. Lagomarsino V. Lansonneur P. Lebrun P. Lehner S. Liberadzka J. Malbrunot C. Mariazzi S. Matveev V. Mazzotta Z. Nebbia G. Nédélec P. Oberthaler M. Pacifico N. Pagano D. Penasa L. Petráček V. Pistillo C. Prelz F. Prevedelli M. Ravelli L. Rienäcker B. Røhne O.M. Rotondi A. Sacerdoti M. Sandaker H. Santoro R. Scampoli P. Smestad L. Sorrentino F. Špaček M. Storey J. Strojek I.M. Testera G. Tietje I. Widmann E. Yzombard P. Zavatarelli S. Zmeskal J. Zurlo N. |
| author_sort | Kellerbauer A. |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-17T03:13:23Z |
| format | Article |
| id | doaj.art-3189c9a15222412ba433c0d60c5e0474 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-17T03:13:23Z |
| publishDate | 2016-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-3189c9a15222412ba433c0d60c5e04742022-12-21T22:05:46ZengEDP SciencesEPJ Web of Conferences2100-014X2016-01-011260201610.1051/epjconf/201612602016epjconf_icnfp2016_02016Probing antimatter gravity – The AEGIS experiment at CERNKellerbauer A.0Aghion S.1Amsler C.2Ariga A.3Ariga T.4Bonomi G.Bräunig P.5Bremer J.6Brusa R. S.Cabaret L.7Caccia M.Caravita R.Castelli F.Cerchiari G.8Chlouba K.9Cialdi S.Comparat D.10Consolati G.11Demetrio A.12Di Noto L.Doser M.13Dudarev A.14Ereditato A.15Evans C.16Ferragut R.17Fesel J.18Fontana A.19Gerber S.20Giammarchi M.21Gligorova A.22Guatieri F.Haider S.23Holmestad H.24Huse T.25Jordan E.26Kimura M.27Koettig T.28Krasnický D.29Lagomarsino V.Lansonneur P.30Lebrun P.31Lehner S.32Liberadzka J.33Malbrunot C.Mariazzi S.34Matveev V.Mazzotta Z.Nebbia G.35Nédélec P.36Oberthaler M.37Pacifico N.38Pagano D.Penasa L.Petráček V.39Pistillo C.40Prelz F.41Prevedelli M.42Ravelli L.Rienäcker B.43Røhne O.M.44Rotondi A.Sacerdoti M.Sandaker H.45Santoro R.Scampoli P.Smestad L.Sorrentino F.Špaček M.46Storey J.47Strojek I.M.48Testera G.49Tietje I.Widmann E.50Yzombard P.51Zavatarelli S.52Zmeskal J.53Zurlo N.Max-Planck-Institut für KernphysikINFN PadovaLaboratory for High Energy Physics, Albert Einstein Center for Fundamental Physics, University of BernLaboratory for High Energy Physics, Albert Einstein Center for Fundamental Physics, University of BernLaboratory for High Energy Physics, Albert Einstein Center for Fundamental Physics, University of BernKirchhoff-Institut für Physik, Univ. of HeidelbergPhysics Department, CERNLaboratoire Aimé Cotton, University Paris-SudMax-Planck-Institut für KernphysikDepartment of Physics, University of MilanoLaboratoire Aimé Cotton, University Paris-SudINFN PadovaKirchhoff-Institut für Physik, Univ. of HeidelbergPhysics Department, CERNPhysics Department, CERNLaboratory for High Energy Physics, Albert Einstein Center for Fundamental Physics, University of BernINFN PadovaINFN PadovaPhysics Department, CERNINFN PaviaPhysics Department, CERNINFN MilanoInstitute of Physics and Technology, University of BergenPhysics Department, CERNDepartment of Physics, University of OsloDepartment of Physics, University of OsloMax-Planck-Institut für KernphysikLaboratory for High Energy Physics, Albert Einstein Center for Fundamental Physics, University of BernPhysics Department, CERNINFN GenovaInstitute of Nuclear Physics, CNRS/IN2p3, University of Lyon 1Institute of Nuclear Physics, CNRS/IN2p3, University of Lyon 1Stefan Meyer Institute for Subatomic Physics, Austrian Academy of SciencesPhysics Department, CERNStefan Meyer Institute for Subatomic Physics, Austrian Academy of SciencesINFN PadovaInstitute of Nuclear Physics, CNRS/IN2p3, University of Lyon 1Kirchhoff-Institut für Physik, Univ. of HeidelbergInstitute of Physics and Technology, University of BergenCzech Technical UniversityLaboratory for High Energy Physics, Albert Einstein Center for Fundamental Physics, University of BernINFN MilanoUniversity of BolognaPhysics Department, CERNDepartment of Physics, University of OsloDepartment of Physics, University of OsloCzech Technical UniversityLaboratory for High Energy Physics, Albert Einstein Center for Fundamental Physics, University of BernCzech Technical UniversityINFN GenovaStefan Meyer Institute for Subatomic Physics, Austrian Academy of SciencesLaboratoire Aimé Cotton, University Paris-SudINFN GenovaStefan Meyer Institute for Subatomic Physics, Austrian Academy of SciencesThe 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.http://dx.doi.org/10.1051/epjconf/201612602016 |
| spellingShingle | Kellerbauer A. Aghion S. Amsler C. Ariga A. Ariga T. Bonomi G. Bräunig P. Bremer J. Brusa R. S. Cabaret L. Caccia M. Caravita R. Castelli F. Cerchiari G. Chlouba K. Cialdi S. Comparat D. Consolati G. Demetrio A. Di Noto L. Doser M. Dudarev A. Ereditato A. Evans C. Ferragut R. Fesel J. Fontana A. Gerber S. Giammarchi M. Gligorova A. Guatieri F. Haider S. Holmestad H. Huse T. Jordan E. Kimura M. Koettig T. Krasnický D. Lagomarsino V. Lansonneur P. Lebrun P. Lehner S. Liberadzka J. Malbrunot C. Mariazzi S. Matveev V. Mazzotta Z. Nebbia G. Nédélec P. Oberthaler M. Pacifico N. Pagano D. Penasa L. Petráček V. Pistillo C. Prelz F. Prevedelli M. Ravelli L. Rienäcker B. Røhne O.M. Rotondi A. Sacerdoti M. Sandaker H. Santoro R. Scampoli P. Smestad L. Sorrentino F. Špaček M. Storey J. Strojek I.M. Testera G. Tietje I. Widmann E. Yzombard P. Zavatarelli S. Zmeskal J. Zurlo N. Probing antimatter gravity – The AEGIS experiment at CERN EPJ Web of Conferences |
| title | Probing antimatter gravity – The AEGIS experiment at CERN |
| title_full | Probing antimatter gravity – The AEGIS experiment at CERN |
| title_fullStr | Probing antimatter gravity – The AEGIS experiment at CERN |
| title_full_unstemmed | Probing antimatter gravity – The AEGIS experiment at CERN |
| title_short | Probing antimatter gravity – The AEGIS experiment at CERN |
| title_sort | probing antimatter gravity the aegis experiment at cern |
| url | http://dx.doi.org/10.1051/epjconf/201612602016 |
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