Prospects for measuring the gravitational free-fall of antihydrogen with emulsion detectors

被引:30
作者
Aghion, S. [1 ,2 ]
Ahlen, O. [3 ]
Amsler, C. [4 ]
Ariga, A. [4 ]
Ariga, T. [4 ]
Belov, A. S. [5 ]
Bonomi, G. [6 ,7 ]
Braeunig, P. [8 ]
Bremer, J. [3 ]
Brusa, R. S. [9 ,10 ]
Cabaret, L. [11 ]
Canali, C. [12 ]
Caravita, R. [13 ]
Castelli, F. [13 ]
Cerchiari, G. [13 ]
Cialdi, S. [13 ]
Comparat, D. [11 ]
Consolati, G. [14 ]
Derking, J. H. [3 ]
Di Domizio, S. [15 ,16 ]
Di Noto, L. [9 ,10 ]
Doser, M. [3 ]
Dudarev, A. [3 ]
Ereditato, A. [4 ]
Ferragut, R. [2 ]
Fontana, A. [7 ]
Genova, P. [7 ]
Giammarchi, M. [2 ]
Gligorova, A. [17 ]
Gninenko, S. N. [5 ]
Haider, S. [3 ]
Harasimovicz, J. [18 ]
Hogan, S. D. [19 ]
Huse, T. [20 ]
Jordan, E. [21 ]
Jorgensen, L. V. [3 ]
Kaltenbacher, T. [3 ]
Kawada, J. [4 ]
Kellerbauer, A. [21 ]
Kimura, M. [4 ]
Knecht, A. [3 ]
Krasnicky, D. [15 ,16 ]
Lagomarsino, V. [15 ,16 ]
Magnani, A. [7 ]
Mariazzi, S. [9 ,10 ]
Matveev, V. A. [5 ,22 ]
Moia, F. [1 ,2 ]
Nebbia, G. [23 ]
Nedelec, P. [24 ]
Oberthaler, M. K. [8 ]
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, D-69120 Heidelberg, Germany
[9] Univ Trent, Dipartimento Fis, I-38123 Trento, Italy
[10] Ist Nazl Fis Nucl, Grp Collegato Trento, I-38123 Trento, Italy
[11] Univ Paris 11, CNRS, Lab Aime Cotton, ENS Cachan, F-91405 Orsay, France
[12] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland
[13] Univ Milan, Dept Phys, I-20133 Milan, Italy
[14] Politecn Milan, Dept Aerosp Sci & Tech, I-20156 Milan, Italy
[15] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy
[16] Univ Genoa, Dept Phys, I-16146 Genoa, Italy
[17] Univ Bergen, Inst Phys & Technol, N-5007 Bergen, Norway
[18] Univ Liverpool, Liverpool L69 3BX, Merseyside, England
[19] UCL, Dept Phys & Astron, London WC1E 6BT, England
[20] Univ Oslo, Dept Phys, N-0371 Oslo, Norway
[21] Max Planck Inst Nucl Phys, D-69117 Heidelberg, Germany
[22] Joint Inst Nucl Res, Dubna 141980, Russia
[23] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy
[24] Univ Lyon 1, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France
[25] Czech Tech Univ, FNSPE, Prague 11519 1, Czech Republic
[26] Univ Bologna, Dept Phys, I-40126 Bologna, Italy
[27] Univ Pavia, Dept Nucl & Theoret Phys, I-27100 Pavia, Italy
[28] Univ Naples Federico II, Dept Phys, I-80126 Naples, Italy
关键词
Particle tracking detectors; Ionization and excitation processes; Detector modelling and simulations I (interaction of radiation with matter; interaction of photons with matter; interaction of hadrons with matter; etc); ANNIHILATION; NUCLEON;
D O I
10.1088/1748-0221/8/08/P08013
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The main goal of the AEgIS experiment at CERN is to test the weak equivalence principle for antimatter. AEgIS will measure the free-fall of an antihydrogen beam traversing a moire deflectometer. The goal is to determine the gravitational acceleration (g) over bar with an initial relative accuracy of 1% by using an emulsion detector combined with a silicon mu-strip detector to measure the time of flight. Nuclear emulsions can measure the annihilation vertex of antihydrogen atoms with a precision of similar to 1-2 mu m r.m.s. We present here results for emulsion detectors operated in vacuum using low energy antiprotons from the CERN antiproton decelerator. We compare with Monte Carlo simulations, and discuss the impact on the AEgIS project.
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页数:20
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