AEgIS experiment: Towards antihydrogen beam production for antimatter gravity measurements

被引：3

作者：

Mariazzi, Sebastiano ^{[1
]}

Aghion, Stefano ^{[2
,3
,4
]}

Amsler, Claude ^{[5
]}

Ariga, Akitaka ^{[5
]}

Ariga, Tomoko ^{[5
]}

Belov, Alexandre S. ^{[6
]}

Bonomi, Germano ^{[7
,8
]}

Braeunig, Philippe ^{[9
]}

Brusa, Roberto S. ^{[10
,11
]}

Bremer, Johan ^{[12
]}

Cabaret, Louis ^{[13
]}

Canali, Carlo ^{[14
]}

Caravita, Ruggero ^{[2
,3
,15
]}

Castelli, Fabrizio ^{[15
]}

Cerchiari, Giovanni ^{[4
,15
]}

Cialdi, Simone ^{[15
]}

Comparat, Daniel ^{[13
]}

Consolati, Giovanni ^{[4
,16
]}

Dassa, Luca ^{[7
]}

Derking, Jan Hendrik ^{[12
]}

Di Domizio, Sergio ^{[17
]}

Di Noto, Lea ^{[10
,11
]}

Doser, Michael ^{[12
]}

Dudarev, Alexey ^{[12
]}

Ereditato, Antonio ^{[5
]}

Ferragut, Rafael ^{[2
,3
,4
]}

Fontana, Andrea ^{[8
]}

Genova, Pablo ^{[8
]}

Giammarchi, Marco ^{[4
]}

Gligorova, Angela ^{[18
]}

Gninenko, Sergei N. ^{[6
]}

Hogan, Stephen D. ^{[19
]}

Haider, Stefan ^{[12
]}

Jordan, Elena ^{[20
]}

Jorgensen, Lars V. ^{[12
]}

Kaltenbacher, Thomas ^{[12
]}

Kawada, Jiro ^{[5
]}

Kellerbauer, Alban ^{[20
]}

Kimura, Mitsuhiro ^{[5
]}

Knecht, Andreas ^{[12
]}

Krasnicky, Daniel ^{[17
,21
]}

Lagomarsino, Vittorio ^{[21
]}

Lehner, Sebastian ^{[1
]}

Malbrunot, Chloe ^{[1
,12
]}

Matveev, Viktor A. ^{[6
,22
]}

Merkt, Frederic ^{[23
]}

Moia, Fabio ^{[2
,3
,4
]}

Nebbia, Giancarlo ^{[24
]}

Nedelec, Patrick ^{[25
]}

Oberthaler, Markus K. ^{[9
]}

机构：

[1] Stefan Meyer Inst Subatomare Phys, A-1090 Vienna, Austria

[2] Politecn Milan, LNESS, I-22100 Como, Italy

[3] Politecn Milan, Dept Phys, I-22100 Como, Italy

[4] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy

[5] Univ Bern, Albert Einstein Ctr Fundamental Phys, High Energy Phys Lab, CH-3012 Bern, Switzerland

[6] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

[7] Univ Brescia, Dept Mech & Ind Engn, I-25133 Brescia, Italy

[8] Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy

[9] Heidelberg Univ, Kirchhoff Inst Phys, D-69120 Heidelberg, Germany

[10] Univ Trento, Dept Phys, I-38123 Povo, Trento, Italy

[11] INFN TIFPA, I-38123 Povo, Trento, Italy

[12] European Org Nucl Res, Dept Phys, CH-1211 Geneva 23, Switzerland

[13] Univ Paris 11, CNRS, ENS Cachan, Aime Cotton Lab, F-91405 Orsay, France

[14] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland

[15] Univ Milan, Dept Phys, I-20133 Milan, Italy

[16] Politecn Milan, Dept Aerosp Sci & Tech, I-20156 Milan, Italy

[17] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy

[18] Univ Bergen, Inst Phys & Technol, N-5007 Bergen, Norway

[19] UCL, Dept Phys & Astron, London WC1E 6BT, England

[20] Max Planck Inst Nucl Phys, D-69117 Heidelberg, Germany

[21] Univ Genoa, Dept Phys, I-16146 Genoa, Italy

[22] Joint Inst Nucl Res, Dubna 141980, Russia

[23] ETH, Phys Chem Lab, CH-8093 Zurich, Switzerland

[24] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy

[25] Univ Lyon 1, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France

[26] Czech Tech Univ, Fac Nucl Sci & Phys Engn, CR-11519 Prague 1, Czech Republic

[27] Univ Bologna, Dept Phys, I-40126 Bologna, Italy

[28] Univ Pavia, Dept Nucl & Theoret Phys, I-27100 Pavia, Italy

[29] Univ Oslo, Dept Phys, N-0371 Oslo, Norway

[30] Univ Naples Federico II, Dept Phys, I-80126 Naples, Italy

来源：

EUROPEAN PHYSICAL JOURNAL D | 2014年 / 68卷 / 03期

关键词：

EXCITATION; ATOM;

D O I：

10.1140/epjd/e2013-40690-3

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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, 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.

引用

页数：6

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