This paper presents a detailed characterization of the positron beam delivered by the Beam Test Facility at Laboratori Nazionali of Frascati to the PADME experiment during Run III, which took place from October to December 2022. It showcases the methodology used to measure the main beam parameters such as the position in space, the absolute momentum scale, the beam energy spread, and its intensity through a combination of data analysis and Monte Carlo simulations. The results achieved include an absolute precision in the momentum of the beam to within ~1–2 MeV/c, a relative beam energy spread below 0.25%, and an absolute precision in the intensity of the beam at the level of 2%.
Characterization of the PADME positron beam for the X17 measurement / Bertelli, S.; Bossi, F.; Buonomo, B.; De Sangro, R.; Di Giulio, C.; Di Meco, E.; Dimitrova, K.; Domenici, D.; Ferrarotto, F.; Finocchiaro, G.; Foggetta, L. G.; Frankenthal, A.; Garattini, M.; Georgiev, G.; Gianotti, P.; Ivanov, S.; Ivanov, S.; Kozhuharov, V.; Leonardi, E.; Long, E.; Mancini, M.; Organtini, G. C.; Raggi, M.; Sarra, I.; Simeonov, R.; Spadaro, T.; Spiriti, E.; Valente, P.; Variola, A.; Vilucchi, E.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2024:8(2024). [10.1007/JHEP08(2024)121]
Characterization of the PADME positron beam for the X17 measurement
Di Meco E.;Kozhuharov V.;Long E.;Raggi M.;
2024
Abstract
This paper presents a detailed characterization of the positron beam delivered by the Beam Test Facility at Laboratori Nazionali of Frascati to the PADME experiment during Run III, which took place from October to December 2022. It showcases the methodology used to measure the main beam parameters such as the position in space, the absolute momentum scale, the beam energy spread, and its intensity through a combination of data analysis and Monte Carlo simulations. The results achieved include an absolute precision in the momentum of the beam to within ~1–2 MeV/c, a relative beam energy spread below 0.25%, and an absolute precision in the intensity of the beam at the level of 2%.| File | Dimensione | Formato | |
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