Sensitivity of emulsion detectors to low energy positrons

Anzi, L.; Ariga, A.; Ereditato, A.; Ferragut, R.; Giammarchi, M.; Maero, G.; Pistillo, C.; Scampoli, P.; Toso, V. (2020). Sensitivity of emulsion detectors to low energy positrons. Journal of instrumentation, 15(03), P03027-P03027. Institute of Physics Publishing IOP 10.1088/1748-0221/15/03/P03027

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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 ∼15 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.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Ariga, Akitaka; Ereditato, Antonio; Pistillo, Ciro and Scampoli, Paola

Subjects:

500 Science > 530 Physics

ISSN:

1748-0221

Publisher:

Institute of Physics Publishing IOP

Language:

English

Submitter:

Ciro Pistillo

Date Deposited:

31 Mar 2021 16:25

Last Modified:

04 Apr 2021 03:05

Publisher DOI:

10.1088/1748-0221/15/03/P03027

BORIS DOI:

10.48350/153042

URI:

https://boris.unibe.ch/id/eprint/153042

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