Nuclear emulsions are a formidable tool for detecting charged particles with sub-micrometric spatial resolution, a feature which is essential in quantum interferometry experiments with antimatter. In this context, we have tested the sensitivity of such a detector, devoid of the usual protective layer, with very low energy positrons, that is in the range 0.2-17 keV. The results show that emulsions are sensitive to positrons with energy below 1 keV. Their detection efficiency increases as a function of the energy and it tends to saturate over similar to 5 keV. This demonstrates the feasibility of using this type of detector in low energy regime and defines the limits of use for future gravitational studies with antimatter.
Sensitivity of emulsion detectors to low energy positrons / L. Anzi, A. Ariga, A. Ereditato, R. Ferragut, M. Giammarchi, G. Maero, C. Pistillo, M. Rome, P. Scampoli, V. Toso. - In: JOURNAL OF INSTRUMENTATION. - ISSN 1748-0221. - 15:3(2020 Mar), pp. P03027.03027-P03027.03027.
Titolo: | Sensitivity of emulsion detectors to low energy positrons |
Autori: | GIAMMARCHI, MARCO GIULIO (Secondo) |
Parole Chiave: | Very low-energy charged particle detectors; Beam dynamics; Beam-line instrumentation (beam position and profile monitors; beam-intensity monitors; bunch length monitors); Detector alignment and calibration methods (lasers, sources, particle-beams) |
Settore Scientifico Disciplinare: | Settore FIS/01 - Fisica Sperimentale Settore FIS/03 - Fisica della Materia |
Data di pubblicazione: | mar-2020 |
Rivista: | |
Tipologia: | Article (author) |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1088/1748-0221/15/03/P03027 |
Appare nelle tipologie: | 01 - Articolo su periodico |
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