The High Energy Cosmic Radiation Detection (HERD) facility onboard the future China's Space Station (CSS) will provide high quality data on charged cosmic rays and gamma rays reaching the measured range from few GeV to PeV energies. Because of this capability, HERD experiment would give a valuable contribution in several scientific topics as dark matter searches, study of cosmic ray chemical composition and high energy gamma-ray observations. The entire instrument is supposed to be surrounded by a plastic scintillator detector (PSD) which will be used to discriminate charged from neutral particles in order to correctly identify gamma-rays and nuclei. One configuration proposed and studied for the HERD PSD detector is the geometry of scintillator segmented in tiles and coupled to Silicon Photomultipliers (SiPMs). SiPMs provide similar or even better performances to the standard photomultiplier tubes (PMTs) with lower power consumption and cost benefits. In 2018, beam test campaigns were performed at CERN PS and SPS to test two prototypes of plastic scintillator tiles, equipped with a set of SiPMs. One was tested with a beam of electrons and pions and another prototype with an ion beam. In the first prototype we studied the dependence of the collected light on the impact point of the beam particles and in the second one we tested the capability of the PSD to discriminate the ion charges. These results are presented.
Characterization of plastic scintillator tiles equipped with SiPMs for the High Energy cosmic-Radiation Detection (HERD) experiment
de Palma F.Membro del Collaboration Group
;Di Santo M.;
2019-01-01
Abstract
The High Energy Cosmic Radiation Detection (HERD) facility onboard the future China's Space Station (CSS) will provide high quality data on charged cosmic rays and gamma rays reaching the measured range from few GeV to PeV energies. Because of this capability, HERD experiment would give a valuable contribution in several scientific topics as dark matter searches, study of cosmic ray chemical composition and high energy gamma-ray observations. The entire instrument is supposed to be surrounded by a plastic scintillator detector (PSD) which will be used to discriminate charged from neutral particles in order to correctly identify gamma-rays and nuclei. One configuration proposed and studied for the HERD PSD detector is the geometry of scintillator segmented in tiles and coupled to Silicon Photomultipliers (SiPMs). SiPMs provide similar or even better performances to the standard photomultiplier tubes (PMTs) with lower power consumption and cost benefits. In 2018, beam test campaigns were performed at CERN PS and SPS to test two prototypes of plastic scintillator tiles, equipped with a set of SiPMs. One was tested with a beam of electrons and pions and another prototype with an ion beam. In the first prototype we studied the dependence of the collected light on the impact point of the beam particles and in the second one we tested the capability of the PSD to discriminate the ion charges. These results are presented.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
