The QUPLAS experimental apparatus for antimatter interferometry

Ariga, A.; Cialdi, S.; Costantini, G.; Ereditato, A.; Ferragut, R.; Giammarchi, M.; Leone, M.; Maero, G.; Miramonti, L.; Pistillo, C.; Romé, M.; Sala, S.; Scampoli, P.; Toso, V. (2020). The QUPLAS experimental apparatus for antimatter interferometry. Nuclear instruments & methods in physics research. Section A - accelerators, spectrometers, detectors and associated equipment, 951, p. 163019. Elsevier 10.1016/j.nima.2019.163019

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QUPLAS (QUantum interferometry and gravitation with Positrons and LASers) is an experimental project for the study of antimatter; it makes use of positrons and positronium and mainly aims at performing quantum interferometry, decoherence and gravitational studies. The first phase of the project, called QUPLAS-0, consisted in the first successful demonstration of quantum interference of an antimatter particle: the positron. The experimental apparatus is composed by the positron beam, the interferometer, and the detector. This paper describes these three elements of QUPLAS-0 and how they were combined to achieve the goal of positron interference.

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