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1.
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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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2.
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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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3.
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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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4.
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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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5.
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Experiments with low-energy antimatter
/ Consolati, G (Milan Polytechnic ; INFN, Milan) ; 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 (INFN, Padua ; Trento U. ; INFN, Trento) et al.
Investigations on antimatter allow us to shed light on fundamental issues of contemporary physics. The only antiatom presently available, antihydrogen, is produced making use of the Antiproton Decelerator (AD) facility at CERN. [...]
2015 - 7 p.
- Published in : EPJ Web Conf. 96 (2015) 01007
EDP Sciences Open Access article: PDF;
In : Dark Matter, Hadron Physics and Fusion Physics, Messina, Italy, 24 - 26 Sep 2014, pp.01007
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6.
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Particle tracking at cryogenic temperatures: the Fast Annihilation Cryogenic Tracking (FACT) detector for the AEgIS antimatter gravity experiment
/ Storey, J (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) ; Braunig, P (Kirchhoff Inst. Phys.) ; Bremer, J (CERN) ; Brusa, R (Trento U. ; INFN, Trento) et al.
/AEgIS
The AEgIS experiment is an interdisciplinary collaboration between atomic, plasma and particle physicists, with the scientific goal of performing the first precision measurement of the Earth's gravitational acceleration on antimatter. The principle of the experiment is as follows: cold antihydrogen atoms are synthesized in a Penning-Malmberg trap and are Stark accelerated towards a moiré deflectometer, the classical counterpart of an atom interferometer, and annihilate on a position sensitive detector. [...]
2015 - 10 p.
- Published in : JINST 10 (2015) C02023
Fulltext: PDF;
In : 10th International Conference on Position Sensitive Detectors, Surrey, UK, 7 - 12 Sep 2014, pp.C02023
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7.
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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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8.
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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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