Title:	Positron-Positronium Converters in Reflection and Transmission Geometry for Gravitational Experiments with Antihydrogen using Moiré Deflectometry
Authors:	Ferguson, R C Campos, S Alfaro Auzins, M Berghold, M Bergmann, B Burian, P Brusa, R S Camper, A Caravita, R Castelli, F Cerchiari, G Ciuryło, R Chehaimi, A Consolati, G Doser, M Eliaszuk, K Germann, M Giszczak, A Glöggler, L T Graczykowski, Ł Grosbart, M Guatieri, F Gusakova, N Gustafsson, F Haider, S Huck, S Hugenschmidt, C Janik, M A Januszek, T Kasprowicz, G Kempny, K Khatri, G Kłosowski, Ł Kornakov, G Krumins, V Lappo, L Linek, A Mariazzi, S Moskal, P Münster, M Pandey, P Pecak, D Penasa, L Petracek, V Piwiński, M Pospisil, S Povolo, L Prelz, F Rangwala, S A Rauschendorfer, T Rawat, B S Rienäcker, B Rodin, V Røhne, O M Sandaker, H Sharma, S Smolyanskiy, P Sowiński, T Tefelski, D Vafeiadis, T Volponi, M Welsch, C P Zawada, M Zielinski, Jakub Zurlo, N
Issue Date:	1-Nov-2025
Publisher:	Journal of Physics: Conference Series
Citation:	Journal of Physics: Conference Series, 2025, Vol. 3029(13), AR No. 012005
Abstract:	In the context of the Antihydrogen Experiment: Gravity, Interferometry, Spectroscopy (AEgIS) located at CERN, positron- positronium converters with a high positron-positronium conversion efficiency have been designed in both reflection and transmission geometries. The converters utilize nanochanneled silicon target technology with positron conversion efficiencies up to around 50% and around 16%, at room temperature and in the absence of magnetic fields, for reflection and transmission respectively. The positron-positronium converters allow for the pulsed production of antihydrogen (H) within the AEgIS experiment. This paper discusses the use of a pulsed H beam in a moir´e deflectometer to perform a precise gravitational measurement on H at AEgIS. This work describes the principles and technical details of the current design of a moir´e deflectometer using the pulsed H beam. The main goal of this work is to summarize the ongoing project of adding the described moir´e deflectometer to the AEgIS experiment to further their efforts toward probing the material dependence of gravity and testing the weak equivalence principle (WEP).
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/8630
Alternative Location:	http://doi.org/10.1088/1742-6596/3029/1/012005
Copyright:	2025 IOP Publishing Ltd
Appears in Collections:	Research Papers (LAMP)

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