A software system has been developed for the DArk Matter Particle Explorer（DAMPE） mission, a satellite-based experiment. The DAMPE software is mainly written in C＋＋ and steered using a Python script. This article ...A software system has been developed for the DArk Matter Particle Explorer（DAMPE） mission, a satellite-based experiment. The DAMPE software is mainly written in C＋＋ and steered using a Python script. This article presents an overview of the DAMPE offline software, including the major architecture design and specific implementation for simulation, calibration and reconstruction. The whole system has been successfully applied to DAMPE data analysis. Some results obtained using the system, from simulation and beam test experiments, are presented.展开更多
The DArk Matter Particle Explorer is an orbital indirect dark matter search experiment which measures the spectra of photons, electrons and positrons originating from deep space. The electromagnetic calorimeter （ECAL...The DArk Matter Particle Explorer is an orbital indirect dark matter search experiment which measures the spectra of photons, electrons and positrons originating from deep space. The electromagnetic calorimeter （ECAL）, made of bisnmth germinate （BGO）, is one of tile key sub-detectors of DAMPE, and is designed for energy measurement with a large dynamic range from 5 GeV to 10 TeV. In this paper, methods for energy correction are discussed, in order to reconstruct the primary energy of the incident electrons. Different methods are chosen for the appropriate energy ranges. The correction results of Geant4 simulation and beam test data （at CERN） are presented.展开更多
In this paper, we present a study of temperature effects on BGO calorimeters using proton MIPs collected in the first year of operation of DAMPE. By directly comparing MIP calibration constants used by the DAMPE data ...In this paper, we present a study of temperature effects on BGO calorimeters using proton MIPs collected in the first year of operation of DAMPE. By directly comparing MIP calibration constants used by the DAMPE data production pipe line, we find an experimental relation between the temperature and signal amplitudes of each BGO bar： a general deviation of -1.162%/℃, and -0.47%/℃ to -1.60%/℃ statistically for each detector element. During 2016, DAMPE＇s temperature changed by ~8℃ due to solar elevation angle, and the corresponding energy scale bias is about 9%. By frequent MIP calibration operation, this kind of bias is eliminated to an acceptable value.展开更多
基金Supported by Chinese 973 Program(2010CB833002)the Strategic Priority Research Program on Space Science of the Chinese Academy of Science(CAS)(XDA04040202-4)+1 种基金the Joint Research Fund in Astronomy under cooperative agreement between the National Natural Science Foundation of China (NSFC) and CAS(U1531126)100 Talents Program of the Chinese Academy of Science
文摘A software system has been developed for the DArk Matter Particle Explorer（DAMPE） mission, a satellite-based experiment. The DAMPE software is mainly written in C＋＋ and steered using a Python script. This article presents an overview of the DAMPE offline software, including the major architecture design and specific implementation for simulation, calibration and reconstruction. The whole system has been successfully applied to DAMPE data analysis. Some results obtained using the system, from simulation and beam test experiments, are presented.
基金Supported by the Chinese 973 Program(2010CB833002)the Strategic Priority Research Program on Space Science of the Chinese Academy of Science(XDA04040202-4)100 Talents Program of CAS
文摘The DArk Matter Particle Explorer is an orbital indirect dark matter search experiment which measures the spectra of photons, electrons and positrons originating from deep space. The electromagnetic calorimeter （ECAL）, made of bisnmth germinate （BGO）, is one of tile key sub-detectors of DAMPE, and is designed for energy measurement with a large dynamic range from 5 GeV to 10 TeV. In this paper, methods for energy correction are discussed, in order to reconstruct the primary energy of the incident electrons. Different methods are chosen for the appropriate energy ranges. The correction results of Geant4 simulation and beam test data （at CERN） are presented.
基金supported by National Key Program for Research and Development(No.2016YFA0400200)NSFC(11303105,11673021)funded by the strategic priority science and technology projects in space science of the Chinese Academy of Sciences(No.XDA04040000 and No.XDA04040400)
文摘In this paper, we present a study of temperature effects on BGO calorimeters using proton MIPs collected in the first year of operation of DAMPE. By directly comparing MIP calibration constants used by the DAMPE data production pipe line, we find an experimental relation between the temperature and signal amplitudes of each BGO bar： a general deviation of -1.162%/℃, and -0.47%/℃ to -1.60%/℃ statistically for each detector element. During 2016, DAMPE＇s temperature changed by ~8℃ due to solar elevation angle, and the corresponding energy scale bias is about 9%. By frequent MIP calibration operation, this kind of bias is eliminated to an acceptable value.
