The Quenching Effect of BGO Crystals on Relativistic Heavy Ions in the DAMPE Experiment

Wei, Yifeng; Zhang, Yunlong; Zhang, Zhiyong; Wu, Libo; Dai, Haifeng; Liu, Chengming; Zhao, Cong; Wang, Ying; Zhao, Yuzhe; Jiang, P. C.; Wang, Yuanzhe; Alemanno, Francesco; Catanzani, Enrico; Wang, Xiaolian; Xu, Zizong; Huang, G. S.

doi:10.1109/tns.2020.2989191

Cited by 12 publications

(7 citation statements)

References 26 publications

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“…Quenching is more significant for heavy nuclei which produce more secondary particles with high charge and low velocity [39]. The BGO quenching is taken into account by including its effect in the MC simulations for ionization energy densities above 10 MeV/mm [40]. The effect is more important for incident energies around ∼80 GeV, where it would result in a ∼2% lower energy reconstruction.…”

mentioning

confidence: 99%

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

Alemanno¹,

An²,

Azzarello³

et al. 2021

Phys. Rev. Lett.

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112

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Recent observations of the light component of the cosmic-ray spectrum have revealed unexpected features that motivate further and more precise measurements up to the highest energies. The Dark Matter Particle Explorer (DAMPE) is a satellite-based cosmic-ray experiment that is operational since December 2015, continuously collecting data on high-energy cosmic particles with very good statistics, energy resolution, and particle identification capabilities. In this work, the latest measurements of the energy spectrum of proton+helium in the energy range from 46 GeV to 316 TeV are presented. Among the most distinctive features of the spectrum, a spectral hardening at ∼600 GeV has been observed, along with a softening at ∼29 TeV measured with a 6.6σ significance. Moreover, by measuring the energy spectrum up to 316 TeV, a strong link is established between space-and ground-based experiments, also suggesting the presence of a second hardening at ∼150 TeV. * https://geant4.web.cern.ch/node/302 † https://web.ikp.kit.edu/rulrich/crmc.html

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mentioning

confidence: 99%

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

Alemanno¹,

An²,

Azzarello³

et al. 2021

Phys. Rev. Lett.

Self Cite

112

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“…An energy measurement of the event is provided by the BGO calorimeter, to which corrections to take into account for saturation and quenching effects in the detector are applied [9,10]. Since the BGO calorimeter is 1.6 interaction lengths deep, it is not able to fully contain the hadronic showers…”

Section: Unfoldingmentioning

confidence: 99%

Analysis of cosmic lithium, beryllium and boron with the DAMPE space mission

Parenti¹,

Chen²,

Mitri³

et al. 2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

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DAMPE (DArk Matter Particle Explorer) is a space-based particle detector that has been continuously taking data since its successful launch in December 2015. Its primary scientific goals include the indirect search of dark matter, the study of galactic cosmic rays with energy from few tens of GeV up to hundreds of TeV and high-energy gamma-ray astronomy. Spectral measurements of secondary nuclei such as lithium, beryllium and boron and ratios to primary fluxes are fundamental to improve our understanding of cosmic ray acceleration and propagation. In this work, first preliminary results on DAMPE data analysis of these elements will be presented.

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“…In this work the detection of the ionization produced by high energy nuclei is proposed as an alternative way to investigate the non-proportional effect. The idea to study the scintillator behaviour by detecting high energy nuclei is not new, for example GLAST/FERMI has measured the CsI(Tl) response with beam tests [23] and the DAMPE experiment the BGO response with cosmic rays [24]. What is proposed here is to characterise quantitatively the light response of different crystals using the theoretical model given in eq.…”

Section: Nuclei Techniquementioning

confidence: 99%

Light yield non-proportionality of inorganic crystals and its effect on cosmic-ray measurements

et al. 2022

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The multi-TeV energy region of the cosmic-ray spectra has been recently explored by direct detection experiments that used calorimetric techniques to measure the energy of the cosmic particles. Interesting spectral features have been observed in both all-electron and nuclei spectra. However, the interpretation of the results is compromised by the disagreements between the data obtained from the various experiments, that are not reconcilable with the quoted experimental uncertainties. Understanding the reason for the discrepancy among the measurements is of fundamental importance in view of the forthcoming high-energy cosmic-ray experiments planned for space, as well as for the correct interpretation of the available results. The purpose of this work is to investigate the possibility that a systematic effect may derive from the non-proportionality of the light response of inorganic crystals, typically used in high-energy calorimetry due to their excellent energy-resolution performance. The main reason for the non-proportionality of the crystals is that scintillation light yield depends on ionisation density. Experimental data obtained with ion beams were used to characterize the light response of various scintillator materials. The obtained luminous efficiencies were used as input of a Monte Carlo simulation to perform a comparative study of the effect of the light-yield non-proportionality on the detection of high-energy electromagnetic and hadronic showers. The result of this study indicates that, if the calorimeter response is calibrated by using the energy deposit of minimum ionizing particles, the measured shower energy might be affected by a significant systematic shift, at the level of few percent, whose sign and magnitude depend specifically on the type of scintillator material used.

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The Quenching Effect of BGO Crystals on Relativistic Heavy Ions in the DAMPE Experiment

Cited by 12 publications

References 26 publications

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

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

Analysis of cosmic lithium, beryllium and boron with the DAMPE space mission

Light yield non-proportionality of inorganic crystals and its effect on cosmic-ray measurements

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