Charge reconstruction study of the DAMPE Silicon-Tungsten Tracker with ion beams

TL;DR

This study evaluates the charge reconstruction capabilities of DAMPE's Silicon-Tungsten Tracker using ion beams at CERN, demonstrating its effectiveness in charge identification for high-energy ions.

Contribution

It presents a detailed analysis of charge reconstruction and resolution for DAMPE's STK detector based on ion beam tests, a novel application for space-based particle detectors.

Findings

Effective charge reconstruction demonstrated for ions up to iron.

Charge resolution achieved suitable for space particle identification.

Validation of detector performance with high-energy ion beams.

Abstract

The DArk Matter Particle Explorer (DAMPE) is one of the four satellites within Strategic Pioneer Research Program in Space Science of the Chinese Academy of Science (CAS). DAMPE can detect electrons, photons in a wide energy range (5 GeV to 10 TeV) and ions up to iron (100GeV to 100 TeV). Silicon-Tungsten Tracker (STK) is one of the four subdetectors in DAMPE, providing photon-electron conversion, track reconstruction and charge identification for ions. Ion beam test was carried out in CERN with 60GeV/u Lead primary beams. Charge reconstruction and charge resolution of STK detectors were investigated.