A moire deflectometer for antimatter

被引：70

作者：

Aghion, S. ^{[1
,2
]}

Ahlen, O. ^{[3
]}

Amsler, C. ^{[4
]}

Ariga, A. ^{[4
]}

Ariga, T. ^{[4
]}

Belov, A. S. ^{[5
]}

Berggren, K. ^{[3
]}

Bonomi, G. ^{[6
,7
]}

Braeunig, P. ^{[8
]}

Bremer, J. ^{[3
]}

Brusa, R. S. ^{[9
,10
]}

Cabaret, L. ^{[11
]}

Canali, C. ^{[12
]}

Caravita, R. ^{[2
,13
]}

Castelli, F. ^{[2
,13
]}

Cerchiari, G. ^{[14
]}

Cialdi, S. ^{[2
,13
]}

Comparat, D. ^{[11
]}

Consolati, G. ^{[1
,2
]}

Derking, H. ^{[3
]}

Di Domizio, S. ^{[15
]}

Di Noto, L. ^{[9
,10
]}

Doser, M. ^{[3
]}

Dudarev, A. ^{[3
]}

Ereditato, A. ^{[4
]}

Ferragut, R. ^{[1
,2
]}

Fontana, A. ^{[7
]}

Genova, P. ^{[7
]}

Giammarchi, M. ^{[2
]}

Gligorova, A. ^{[16
]}

Gninenko, S. N. ^{[5
]}

Haider, S. ^{[3
]}

Huse, T. ^{[17
]}

Jordan, E. ^{[14
]}

Jorgensen, L. V. ^{[3
]}

Kaltenbacher, T. ^{[3
]}

Kawada, J. ^{[4
]}

Kellerbauer, A. ^{[14
]}

Kimura, M. ^{[4
]}

Knecht, A. ^{[3
]}

Krasnicky, D. ^{[1
,15
]}

Lagomarsino, V. ^{[15
,18
]}

Lehner, S. ^{[19
]}

Magnani, A. ^{[7
,20
]}

Malbrunot, C. ^{[3
,19
]}

Mariazzi, S. ^{[9
,10
,19
]}

Matveev, V. A. ^{[5
,21
]}

Moia, F. ^{[1
,2
]}

Nebbia, G. ^{[21
,22
]}

Nedelec, P. ^{[23
]}

机构：

[1] Politecn Milan, I-20133 Milan, Italy

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

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

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

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

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

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

[8] Heidelberg Univ, Kirchhoff Inst Phys, Heidelberg, Germany

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

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

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

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

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

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

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

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

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

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

[19] Austrian Acad Sci, Stefan Meyer Inst Subat Phys, A-1090 Vienna, Austria

[20] Univ Pavia, Dept Phys, I-27100 Pavia, Italy

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

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

[23] Univ Lyon 1, CNRS IN2P3, Inst Nucl Phys Lyon, F-69622 Villeurbanne, France

[24] Czech Tech Univ, FNSPE, Prague 11519 1, Czech Republic

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

[26] Ist Nazl Fis Nucl, I-40126 Bologna, Italy

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

来源：

NATURE COMMUNICATIONS | 2014年 / 5卷

基金：

瑞士国家科学基金会;

关键词：

EQUIVALENCE PRINCIPLE;

D O I：

10.1038/ncomms5538

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The precise measurement of forces is one way to obtain deep insight into the fundamental interactions present in nature. In the context of neutral antimatter, the gravitational interaction is of high interest, potentially revealing new forces that violate the weak equivalence principle. Here we report on a successful extension of a tool from atom optics-the moire deflectometer-for a measurement of the acceleration of slow antiprotons. The setup consists of two identical transmission gratings and a spatially resolving emulsion detector for antiproton annihilations. Absolute referencing of the observed antimatter pattern with a photon pattern experiencing no deflection allows the direct inference of forces present. The concept is also straightforwardly applicable to antihydrogen measurements as pursued by the AEgIS collaboration. The combination of these very different techniques from high energy and atomic physics opens a very promising route to the direct detection of the gravitational acceleration of neutral antimatter.

引用

页数：6

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