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The AEgIS Experiment: Progress and Future Outlook / AEgIS Collaboration
The AEgIS experiment at CERN is pioneering measurements of gravity, spectroscopy, and interferometry using pulsed antimatter atomic sources. This work provides an overview of the AEgIS experimental setupand highlights recent advancements in antihydrogen production, positronium laser cooling, and the creation of antiprotonic atoms. [...]
POS (EXA-LEAP2024) 024.- 2025 - 9 p. - Published in : PoS EXA-LEAP2024 (2025) 024 Fulltext: PDF;
In : International Conference on Exotic Atoms and Related Topics and Conference on Low Energy Antiprotons (EXA/LEAP 2024), Vienna, Austria, 26 - 30 Aug 2024, pp.024

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Prospects for forward emitted positronium from nanoporous membranes at AEgIS / AEgIS Collaboration
Antihydrogen formation at AEgIS at CERN leverages charge exchange between Rydberg positronium (Ps*) and antiprotons, with cross-sections scaling with the Ps principal quantum number $n^4$ and inversely with relative velocity $v^{-2}$. However, the motional Stark effect and velocity mismatch between Ps and antiprotons impose stringent constraints, limiting efficiency. [...]
2025 - 7 p. - Published in : PoS EXA-LEAP2024 (2025) 082 Fulltext: PDF;
In : International Conference on Exotic Atoms and Related Topics and Conference on Low Energy Antiprotons (EXA/LEAP 2024), Vienna, Austria, 26 - 30 Aug 2024, pp.082

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Real-time antiproton annihilation vertexing with submicrometer resolution / AEḡIS Collaboration
The primary goal of the AEgIS experiment is to precisely measure the free fall of antihydrogen within Earth's gravitational field. To this end, a cold ~50K antihydrogen beam has to pass through two grids forming a moiré deflectometer before annihilating onto a position-sensitive detector, which shall determine the vertical position of the annihilation vertex relative to the grids with micrometric accuracy. [...]
arXiv:2406.16044.- 2025-04-04 - 10 p. - Published in : Sci. Adv. 11 (2025) ads1176 Fulltext: 2406.16044 - PDF; document - PDF;

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A fiber detector to monitor ortho-Ps formation and decay / Rienäcker, Benjamin (CERN) ; Brusa, Roberto Sennen (U. Trento (main) ; TIFPA-INFN, Trento) ; Caravita, Ruggero (TIFPA-INFN, Trento) ; Mariazzi, Sebastiano (TIFPA-INFN, Trento) ; Penasa, L. (Trento U. ; TIFPA-INFN, Trento) ; Pino, Felix (U. Padua, Dept. Phys. Astron.) ; Ranum, Oline Aas (U. Amsterdam, GRAPPA) ; Nebbia, Giancarlo (INFN, Padua)
We describe a novel method to use a scintillating fiber detector similar to the Fast Annihilation Cryogenic Tracking (FACT) used at the antimatter experiment AE$\bar{g}$IS to monitor the presence of ortho-positronium. A single scintillating fiber was coupled to a photomultiplier tube and irradiated by flashes of about 6 x 10$^{6}$ 511 keV $\gamma$-rays produced by $\approx10\,\text{ns}$ long positron pulses. [...]
arXiv:2111.01503.- 2022-03-11 - 6 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 1027 (2022) 166275 Fulltext: PDF;

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Pulsed production of antihydrogen / Amsler, Claude (Stefan Meyer Inst. Subatomare Phys.) ; Antonello, Massimiliano (Insubria U., Como ; INFN, Milan) ; Belov, Alexander (Moscow, INR) ; Bonomi, Germano (U. Brescia ; INFN, Pavia) ; Brusa, Roberto Sennen (Trento U. ; TIFPA-INFN, Trento) ; Caccia, Massimo (Insubria U., Como ; INFN, Milan) ; Camper, Antoine (CERN) ; Caravita, Ruggero (TIFPA-INFN, Trento ; CERN) ; Castelli, Fabrizio (INFN, Milan ; Milan U.) ; Cheinet, Patrick (LAC, Orsay) et al.
Antihydrogen atoms with K or sub-K temperature are a powerful tool to precisely probe the validity of fundamental physics laws and the design of highly sensitive experiments needs antihydrogen with controllable and well defined conditions. We present here experimental results on the production of antihydrogen in a pulsed mode in which the time when 90% of the atoms are produced is known with an uncertainty of ~250 ns. [...]
2021 - 11 p. - Published in : Commun. Phys. 4 (2021) 19 Fulltext: PDF;

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