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Positron Manipulation and Positronium Laser Excitation in AEgIS
/ Mariazzi, Sebastiano (OAW, Vienna) ; Caravita, Ruggero ; Aghion, Stefano ; Amsler, Claude ; Ariga, Akitaka ; Ariga, Tomoko ; Bonomi, Germano ; Bräunig, Philippe ; Bremer, Johan (CERN) ; Brusa, Roberto S et al.
Production of antihydrogen by using the charge exchange reaction, as proposed by AEgIS (Antimatter Experiment: gravity, Interferometry, Spectroscopy), requires the formation of a dense cloud of positronium atoms excited to Rydberg states. In this work, the recent advances in AEgIS towards this result are described. [...]
2017 - 6 p.
- Published in : Defect and Diffusion Forum 373 (2017) 11-16
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Towards a gravity measurement on cold antimatter atoms
/ Caravita, R (Oslo U.) ; Aghion, S (Oslo U.) ; Amsler, C (Bern U.) ; Ariga, A (Bern U.) ; Ariga, T (Bern U.) ; Bonomi, G (Oslo U.) ; Bräunig, P (Kirchhoff Inst. Phys.) ; Bremer, J (CERN) ; Brusa, R S (Oslo U.) ; Cabaret, L (U. Paris-Saclay, Orsay) et al.
/AEGIS
The present status of the AEGIS experiment at CERN (AD-06), on the way of forming anti-hydrogen for a first gravity measurement, is reviewed. Recent results in trapping and cooling positrons and antiprotons in the main electromagnetic traps are presented, including the storage time measurement obtained during the 2014 run with antiprotons, the observation of centrifugal separation of a mixed antiproton/electron plasma and positron accumulation and transfer results obtained during 2015..
2016 - 6 p.
- Published in : Nuovo Cimento C 39 (2016) 237
Fulltext: PDF;
In : 24th Incontri di Fisica delle Alte Energie, Rome, Italy, 8 - 10 Apr 2015, pp.237
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Positron bunching and electrostatic transport system for the production and emission of dense positronium clouds into vacuum
/ Aghion, S (INFN, Milan ; Milan Polytechnic) ; Amsler, C (Bern U., LHEP ; U. Bern, AEC) ; Ariga, A (Bern U., LHEP ; U. Bern, AEC) ; Ariga, T (Bern U., LHEP ; U. Bern, AEC) ; Belov, A S (Moscow, INR) ; Bonomi, G (INFN, Pavia ; U. Brescia) ; Bräunig, P (Kirchhoff Inst. Phys.) ; Bremer, J (CERN) ; Brusa, R S (TIFPA-INFN, Trento ; Trento U.) ; Cabaret, L (Orsay ; Cachan, Ecole Normale Superieure ; U. Paris-Saclay, Orsay) et al.
/AEgIS
We describe a system designed to re-bunch positron pulses delivered by an accumulator supplied by a positron source and a Surko-trap. Positron pulses from the accumulator are magnetically guided in a 0.085 T field and are injected into a region free of magnetic fields through a μ -metal field terminator. [...]
2015 - 7 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 362 (2015) 86-92
Elsevier Open Access article: PDF;
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Overview of recent work on laser excitation of positronium for the formation of antihydrogen
/ Yzombard, P (LAC, Orsay) ; Amsler, C (Bern U., LHEP) ; Ariga, T (Bern U., LHEP) ; Bonomi, G (Brescia U. ; INFN, Pavia) ; Bräunig, P (Kirchhoff Inst. Phys.) ; Brusa, R S (Trento U. ; TIFPA-INFN, Trento) ; Cabaret, L (LAC, Orsay) ; Caccia, M (INFN, Milan) ; Caravita, R (Genoa U. ; INFN, Genoa ; CERN) ; Castelli, F (INFN, Milan ; Milan U.) et al.
The AEgIS experiment carried out at CERN aims to form a cold antihydrogen beam to perform precision studies on gravity. A key ingredient is the creation of antihydrogen via a charge-exchange process between trapped antiprotons and Rydberg excited positronium atoms (Ps). [...]
2017 - 11 p.
- Published in : JPS Conf. Proc. 18 (2017) 011026
Fulltext: PDF;
In : 12th International Conference on Low Energy Antiproton Physics, Kanazawa, Japan, 6 - 11 Mar 2016, pp.011026
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The AEgIS experiment
/ Testera, G (INFN, Genoa) ; Aghion, S (Milan Polytechnic ; INFN, Milan) ; Amsler, C (Bern U., LHEP) ; Ariga, A (Bern U., LHEP) ; Ariga, T (Bern U., LHEP) ; Belov, A (Moscow, INR) ; Bonomi, G (INFM, Brescia ; INFN, Pavia) ; Braunig, P (Kirchhoff Inst. Phys.) ; Bremer, J (CERN) ; Brusa, R (Trento U. ; TIFPA-INFN, Trento) et al.
The AEgIS experiment is presently almost completely installed at CERN. It is currently taking data with antiprotons, electrons and positrons. [...]
2015 - 8 p.
- Published in : Hyperfine Interact. 233 (2015) 13-20
In : 5th International Conference on Exotic Atoms and Related Topics, Vienna, Austria, 15 - 19 Sep 2014, pp.13-20
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The AEgIS experiment at CERN: measuring antihydrogen free-fall in earth’s gravitational field to test WEP with antimatter
/ Brusa, R S (Trento U. ; TIFPA-INFN, Trento) ; Amsler, C (U. Bern, AEC) ; Ariga, T (Bern U., LHEP) ; Bonomi, G (U. Brescia ; INFN, Pavia) ; Bräunig, P (Kirchhoff Inst. Phys.) ; Cabaret, L ; Caccia, M (INFN, Milan ; Insubria U., Como) ; Caravita, R (Genoa U. ; INFN, Genoa) ; Castelli, F (INFN, Milan ; Milan U.) ; Cerchiari, G (Heidelberg, Max Planck Inst.) et al.
The AEgIS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) experiment is designed with the objective to test the weak equivalence principle with antimatter by studying the free fall of antihydrogen in the Earth’s gravitational field. A pulsed cold beam of antihydrogen will be produced by charge exchange between cold Ps excited in Rydberg state and cold antiprotons. [...]
2017 - 8 p.
- Published in : J. Phys.: Conf. Ser. 791 (2017) 012014
In : 14th International Workshop on Slow Positron Beam Techniques and Applications, Matsue, Japan, 22 - 27 May 2016, pp.012014
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Testing the Weak Equivalence Principle with an antimatter beam at CERN
/ Kimura, M (Bern U., LHEP) ; Aghion, S (Milan Polytechnic ; INFN, Milan) ; Amsler, C (Bern U., LHEP) ; Ariga, A (Bern U., LHEP) ; Ariga, T (Bern U., LHEP) ; Belov, A (Moscow, INR) ; Bonomi, G (INFM, Brescia ; INFN, Pavia) ; Bräunig, P (Kirchhoff Inst. Phys.) ; Bremer, J (CERN) ; Brusa, R S (Trento U. ; TIFPA-INFN, Trento) et al.
/AEgIS
The goal of the AEgIS experiment is to measure the gravitational acceleration of antihydrogen – the simplest atom consisting entirely of antimatter – with the ultimate precision of 1%. We plan to verify the Weak Equivalence Principle (WEP), one of the fundamental laws of nature, with an antimatter beam. [...]
2015 - 9 p.
- Published in : J. Phys.: Conf. Ser. 631 (2015) 012047
Fulltext: 1742-6596_631_1_012047 - PDF; 10.1088_1742-6596_631_1_012047 - PDF;
In : 4th Symposium on Prospects in the Physics of Discrete Symmetries, London, UK, 2 - 6 Dec 2014, pp.012047
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Emulsion detectors for the antihydrogen detection in AEgIS
/ Pistillo, C (Bern U., LHEP) ; Aghion, S (Milan Polytechnic ; INFN, Milan) ; Amsler, C (Bern U., LHEP) ; Ariga, A (Bern U., LHEP) ; Ariga, T (Bern U., LHEP) ; Belov, A (Moscow, INR) ; Bonomi, G (INFM, Brescia ; INFN, Pavia) ; Bräunig, P (Kirchhoff Inst. Phys.) ; Bremer, J (CERN) ; Brusa, R S (Trento U. ; TIFPA-INFN, Trento) et al.
The AEgIS experiment at CERN aims to perform the first direct measurement of gravitational interaction between matter and antimatter by measuring the deviation of a cold antihydrogen beam in the Earth gravitational field. The design of the experiment has been recently updated to include emulsion films as position sensitive detector. [...]
2015 - 6 p.
- Published in : Hyperfine Interact. 233 (2015) 29-34
In : 5th International Conference on Exotic Atoms and Related Topics, Vienna, Austria, 15 - 19 Sep 2014, pp.29-34
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