Correction Method for the Readout Saturation of the DAMPE Calorimeter

Abstract

The DArk Matter Particle Explorer (DAMPE) is a space-borne high energy cosmic-ray and $\gamma$-ray detector which operates smoothly since the launch on December 17, 2015. The bismuth germanium oxide (BGO) calorimeter is one of the key sub-detectors of DAMPE used for energy measurement and electron proton identification. For events with total energy deposit higher than decades of TeV, the readouts of PMTs coupled on the BGO crystals would become saturated, which results in an underestimation of the energy measurement. Based on detailed simulations, we develop a correction method for the saturation effect according to the shower development topologies and energies measured by neighbouring BGO crystals. The verification with simulated and on-orbit events shows that this method can well reconstruct the energy deposit in the saturated BGO crystal.

17 pages, 9 figures, to be published in Nuclear Inst. and Methods in Physics Research, A

References in corpus (6)

• Direct detection of a break in the teraelectronvolt cosmic-ray spectrum of electrons and positrons
• The DArk Matter Particle Explorer mission
• Measurement of the cosmic-ray proton spectrum from 40 GeV to 100 TeV with the DAMPE satellite
• The on-orbit calibration of DArk Matter Particle Explorer
• Interpretations of the DAMPE electron data
• Calibration and performance of the neutron detector onboard of the DAMPE mission

Cited by in corpus (7)

• Detection of spectral hardenings in cosmic-ray boron-to-carbon and boron-to-oxygen flux ratios with DAMPE
• A deep learning method for the trajectory reconstruction of cosmic rays with the DAMPE mission
• Measurement of the cosmic p+He energy spectrum from 50 GeV to 0.5 PeV with the DAMPE space mission
• Development of the photo-diode subsystem for the HERD calorimeter double-readout
• Machine learning-based method of calorimeter saturation correction for helium flux analysis with DAMPE experiment
• Machine-learning correction for the calorimeter saturation of cosmic-ray ions with the Dark Matter Particle Explorer: towards the PeV scale
• Investigation of hadronic cross sections of cosmic ray carbon and oxygen on BGO from 200 GeV to 10 TeV energy at the DAMPE experiment