Beam test characterisation of a Plastic Scintillator Prototype for the space-based cosmic ray experiment HERD

TL;DR

This paper reports on the beam test characterization of a plastic scintillator prototype for the HERD space-based cosmic ray experiment, focusing on charge resolution performance in particle detection.

Contribution

It presents the first beam test results of a Plastic Scintillator Detector prototype for HERD, demonstrating its potential for charge measurement in space-based cosmic ray detection.

Findings

Preliminary charge resolution results obtained from beam tests.

Successful operation of the scintillator prototype with proton and C ion beams.

Validation of the detector design for space applications.

Abstract

The High Energy cosmic-Radiation Detector (HERD) facility is planned to go onboard China's Space Station, planned to be operational starting in around 2025 for about 10 years. The main scientific objectives of HERD are the search for signals of dark matter annihilation products, precise cosmic electron/positron spectrum and measurements of anisotropy up to 10 TeV, precise cosmic ray spectrum and composition measurements up to the knee energy (1 PeV), and high energy $\gamma$-ray monitoring and survey. HERD consists of a 3D cubic crystals calorimeter (CALO) surrounded by microstrip silicon trackers (STKs) and scintillating fiber trackers (FIT) and by a Plastic Scintillator Detector (PSD) for $\gamma$-ray veto and ion charge measurement. A PSD prototype consisting of a scintillator tile readout by two arrays of SiPMs on opposite sides has been tested with proton and C ion beam at the CNAO (Centro Nazionale Adroterapia Oncologica) in Pavia, (Italy). Preliminary results on charge resolution are presented.