Publications de Chiara Perrina

Progressing our understanding of cosmic rays with the HERD space-borne experiment

A new generation of space experiments is needed to enhance our understanding of cosmic rays. The challenge of the direct detection at ever higher energies, with improved energy and angular resolutions, is guiding us in the design of future detectors. The H ...

EDP Sciences2025

Observation of a Spectral Hardening in Cosmic Ray Boron Spectrum with the DAMPE Space Mission

Jennifer Maria Frieden, Chiara Perrina

Secondary cosmic ray fluxes are important probes of the propagation and interaction of high-energy particles in the Galaxy. Recent measurements of primary and secondary cosmic ray nuclei have revealed unexpected spectral features that demand a deeper under ...

2025

Simultaneous Irradiation and Testing for Radiation Damage Evaluation in Actively Biased SiPMs and Other Devices

Jennifer Maria Frieden, Chiara Perrina

A portable opto-electronic device test bench together with a neutron irradiation setup at Reactor Argentino 1 (RA-1) facility in Buenos Aires (Argentina) is presented. The irradiation with neutrons is performed to reproduce the expected damage the devices ...

Institute of Electrical and Electronics Engineers Inc.2024

Attaining the PeV frontier of the cosmic ray spectrum in space with HERD

Chiara Perrina

The High Energy cosmic-Radiation Detection facility (HERD) is a calorimetric experiment planned to be launched in 2027. It will be operational for at least 10 years on board the China Space Station. With HERD we will measure the energy flux of cosmic proto ...

E D P SCIENCES2023

A deep learning method for the trajectory reconstruction of cosmic rays with the DAMPE mission

Jennifer Maria Frieden, Chiara Perrina, Xin Wu, Arshia Ruina, Andrii Kotenko

A deep learning method for the particle trajectory reconstruction with the DAMPE experiment is presented. The developed algorithms constitute the first fully machine-learned track reconstruction pipeline for space astroparticle missions. Significant perfor ...

ELSEVIER2023

Search for relativistic fractionally charged particles in space

Jennifer Maria Frieden, Chiara Perrina, Jian Wang, Zhirui Xu, Yi Zhang, Siyuan Wang, Songmei Wu, Junqiu Liu, Johan Juul Chang, Jie Chen

More than a century after the performance of the oil drop experiment, the possible existence of fractionally charged particles (FCPs) still remains unsettled. The search for FCPs is crucial for some extensions of the Standard Model in particle physics. Mos ...

American Physical Society2022

Detection of spectral hardenings in cosmic-ray boron-to-carbon and boron-to-oxygen flux ratios with DAMPE

Jennifer Maria Frieden, Chiara Perrina

Boron nuclei in cosmic rays (CRs) are believed to be mainly produced by the fragmentation of heavier nuclei, such as carbon and oxygen, via collisions with the interstellar matter. Therefore, the boron-tocarbon flux ratio (B/C) and the boron-to-oxygen flux ...

ELSEVIER2022

Observations of Forbush Decreases of Cosmic-Ray Electrons and Positrons with the Dark Matter Particle Explorer

Chiara Perrina

The Forbush decrease (FD) represents the rapid decrease of the intensities of charged particles accompanied with the coronal mass ejections or high-speed streams from coronal holes. It has been mainly explored with the ground-based neutron monitor network, ...

IOP Publishing Ltd2021

Feasibility study of cosmic-ray components measurement by using a scintillating fiber tracker in space

Chiara Perrina

Purpose The application of traditional silicon strip detectors in space experiments often suffers from heat and power consumption limitations when a large area has to be instrumented. Recently, a scintillating fiber detector with SiPM readout was proposed ...

SPRINGER SINGAPORE PTE LTD2021

Measurement of the Cosmic Ray Helium Energy Spectrum from 70 GeV to 80 TeV with the DAMPE Space Mission

Chiara Perrina

The measurement of the energy spectrum of cosmic ray helium nuclei from 70 GeV to 80 TeV using 4.5 years of data recorded by the Dark Matter Particle Explorer (DAMPE) is reported in this work. A hardening of the spectrum is observed at an energy of about 1 ...

2021