A Digital Calorimeter for Dark Matter Search in Space

A novel digital imaging calorimeter is designed for the observation of high energy electrons and gamma rays on the Space Station of China. The MC data shows that the calorimeter has a capability of observing the electrons (without separation between e+ and e−) and the gamma-rays in 30GeV-5TeV with a...

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Published in:Journal of physics. Conference series 2011-04, Vol.293 (1), p.012038-6
Main Authors: Sun, X L, Lu, J G, Hu, T, Zhou, L, Cai, X, Yu, B X, Fang, J, Xie, Y G, An, Z H, Wang, Z G, Zhang, A W, Xue, Z
Format: Article
Language:English
Subjects:
Angular resolution
China
Dark matter
Digital imaging
Energy distribution
Energy resolution
Energy spectra
Gamma rays
High energy electrons
Line spectra
Physics
Space stations
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container_title Journal of physics. Conference series
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creator Sun, X L
Lu, J G
Hu, T
Zhou, L
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Fang, J
Xie, Y G
An, Z H
Wang, Z G
Zhang, A W
Xue, Z
description A novel digital imaging calorimeter is designed for the observation of high energy electrons and gamma rays on the Space Station of China. The MC data shows that the calorimeter has a capability of observing the electrons (without separation between e+ and e−) and the gamma-rays in 30GeV-5TeV with a high energy resolution of 4% over 500GeV, a good angular resolution of 0.5 degree over 500GeV, and a high proton rejection power of ∼5×105(95% signal efficiency). The calorimeter has a large geometrical factor of ∼3.3 m2sr (5 sensitive faces) with ∼1T weight. The excellent energy resolution make us can detect any change of the energy spectra and a line signature in the energy distribution, as expected from the dark matter.
doi_str_mv 10.1088/1742-6596/293/1/012038
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subjects Angular resolution
China
Dark matter
Digital imaging
Energy distribution
Energy resolution
Energy spectra
Gamma rays
High energy electrons
Line spectra
Physics
Space stations
title A Digital Calorimeter for Dark Matter Search in Space
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