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A simple and natural interpretations of the DAMPE cosmic-ray electron/positron spectrum within two sigma deviations

The DArk Matter Particle Explorer (DAMPE) experiment has recently announced the first results for the measurement of total electron plus positron fluxes between 25 GeV and 4.6 TeV. A spectral break at about 0.9 TeV and a tentative peak…

High Energy Physics - Phenomenology · Physics 2019-04-24 Jia-Shu Niu , Tianjun Li , Fang-Zhou Xu

A deep learning method for the trajectory reconstruction of cosmic rays with the DAMPE mission

A deep learning method for the particle trajectory reconstruction with the DAMPE experiment is presented. The developed algorithms constitute the first fully machine-learned track reconstruction pipeline for space astroparticle missions.…

Instrumentation and Methods for Astrophysics · Physics 2023-05-03 Andrii Tykhonov , Andrii Kotenko , Paul Coppin , Maksym Deliyergiyev , David Droz , Jennifer Maria Frieden , Chiara Perrina , Enzo Putti-Garcia , Arshia Ruina , Mikhail Stolpovskiy , Xin Wu

A new charge reconstruction algorithm for the DAMPE silicon microstrip detector

The DArk Matter Particle Explorer (DAMPE) is one of the four satellites within the Strategic Pioneer Research Program in Space Science of the Chinese Academy of Science (CAS). The Silicon-Tungsten Tracker (STK), which is composed of 768…

Instrumentation and Methods for Astrophysics · Physics 2017-12-22 Rui Qiao , Wen-Xi Peng , Dong-Ya Guo , Hao Zhao , Huan-Yu Wang , Ke Gong , Fei Zhang

Comparison of proton shower developments in the BGO calorimeter of the Dark Matter Particle Explorer between GEANT4 and FLUKA simulations

The DArk Matter Particle Explorer (DAMPE) is a satellite-borne detector for high-energy cosmic rays and $\gamma$-rays. To fully understand the detector performance and obtain reliable physical results, extensive simulations of the detector…

Instrumentation and Detectors · Physics 2020-12-30 Wei Jiang , Chuan Yue , Ming-Yang Cui , Xiang Li , Qiang Yuan , Francesca Alemanno , Paolo Bernardini , Giovanni Catanzani , Zhan-Fang Chen , Ivan De Mitri , Tie-Kuang Dong , Giacinto Donvito , David Francois Droz , Piergiorgio Fusco , Fabio Gargano , Dong-Ya Guo , Dimitrios Kyratzis , Shi-Jun Lei , Yang Liu , Francesco Loparco , Peng-Xiong Ma , Giovanni Marsella , Mario Nicola Mazziotta , Xu Pan , Wen-Xi Peng , Antonio Surdo , Andrii Tykhonov , Yi-Yeng Wei , Yu-Hong Yu , Jing-Jing Zang , Ya-Peng Zhang , Yong-Jie Zhang , Yun-Long Zhang

Machine learning-based method of calorimeter saturation correction for helium flux analysis with DAMPE experiment

DAMPE is a space-borne experiment for the measurement of the cosmic-ray fluxes at energies up to around 100 TeV per nucleon. At energies above several tens of TeV, the electronics of DAMPE calorimeter would saturate, leaving certain bars…

High Energy Astrophysical Phenomena · Physics 2022-07-06 Mikhail Stolpovskiy , Xin Wu , Andrii Tykhonov , Maksym Deliyergiyev , Chiara Perrina , Maria Munoz , David Droz , Arshia Ruina , Enrico Catanzani

An Unsupervised Machine Learning Method for Electron--Proton Discrimination of the DAMPE Experiment

Galactic cosmic rays are mostly made up of energetic nuclei, with less than $1\%$ of electrons (and positrons). Precise measurement of the electron and positron component requires a very efficient method to reject the nuclei background,…

Instrumentation and Methods for Astrophysics · Physics 2022-12-07 Zhihui Xu , Xiang Li , Mingyang Cui , Chuan Yue , Wei Jiang , Wenhao Li , Qiang Yuan

Energy Reconstruction of Non-fiducial Electron-Positron Events in the DAMPE Experiment Using Convolutional Neural Networks

The Dark Matter Particle Explorer (DAMPE) is a space-based Cosmic-Ray (CR) observatory with the aim, among others, to study Cosmic-Ray Electrons (CREs) up to 10 TeV. Due to the low CRE rate at multi-TeV energies, we aim to increasing the…

Instrumentation and Methods for Astrophysics · Physics 2025-09-25 Enzo Putti-Garcia , Andrii Tykhonov , Andrii Kotenko , Hugo Boutin , Manbing Li , Paul Coppin , Andrea Serpolla , Jennifer Maria Frieden , Chiara Perrina , Xin Wu

Confronting the DAMPE Excess with the Scotogenic Type-II Seesaw Model

The DArk Matter Particle Explorer (DAMPE) has observed a tentative peak at $E\sim1.4~\TeV$ in the cosmic-ray electron spectrum. In this paper, we interpret this excess in the scotogenic type-II seesaw model. This model extends the canonical…

High Energy Physics - Phenomenology · Physics 2018-06-22 Ran Ding , Zhi-Long Han , Lei Feng , Bin Zhu

Dark matter gets DAMPE at high energies

The DArk Matter Particle Explorer (DAMPE) mission revealed a break in the spectrum of cosmic-ray electons and positrons. This is associated with an excess above the expected backgrounds at energies around 1 TeV. Several authors have argued…

Cosmology and Nongalactic Astrophysics · Physics 2019-02-21 Geoff Beck , Sergio Colafrancesco

BGO quenching effect on spectral measurements of cosmic-ray nuclei in DAMPE experiment

The Dark Matter Particle Explorer (DAMPE) is a satellite-borne detector designed to measure high energy cosmic-rays and $\gamma$-rays. As a key sub-detector of DAMPE, the Bismuth Germanium Oxide (BGO) imaging calorimeter is utilized to…

High Energy Physics - Experiment · Physics 2023-08-09 Zhan-Fang Chen , Chuan Yue , Wei Jiang , Ming-Yang Cui , Qiang Yuan , Ying Wang , Cong Zhao , Yi-Feng Wei

Measurement of the cosmic ray helium energy spectrum from 70 GeV to 80 TeV with the DAMPE space mission

The measurement of the energy spectrum of cosmic ray helium nuclei from 70 GeV to 80 TeV using 4.5 years of data recorded by the DArk Matter Particle Explorer (DAMPE) is reported in this work. A hardening of the spectrum is observed at an…

High Energy Astrophysical Phenomena · Physics 2023-03-09 F. Alemanno , Q. An , P. Azzarello , F. C. T. Barbato , P. Bernardini , X. J. Bi , M. S. Cai , E. Catanzani , J. Chang , D. Y. Chen , J. L. Chen , Z. F. Chen , M. Y. Cui , T. S. Cui , Y. X. Cui , H. T. Dai , A. D'Amone , A. De Benedittis , I. De Mitri , F. de Palma , M. Deliyergiyev , M. Di Santo , T. K. Dong , Z. X. Dong , G. Donvito , D. Droz , J. L. Duan , K. K. Duan , D. D'Urso , R. R. Fan , Y. Z. Fan , K. Fang , F. Fang , C. Q. Feng , L. Feng , P. Fusco , M. Gao , F. Gargano , K. Gong , Y. Z. Gong , D. Y. Guo , J. H. Guo , X. L. Guo , S. X. Han , Y. M. Hu , G. S. Huang , X. Y. Huang , Y. Y. Huang , M. Ionica , W. Jiang , J. Kong , A. Kotenko , D. Kyratzis , S. J. Lei , S. Li , W. L. Li , X. Li , X. Q. Li , Y. M. Liang , C. M. Liu , H. Liu , J. Liu , S. B. Liu , W. Q. Liu , Y. Liu , F. Loparco , C. N. Luo , M. Ma , P. X. Ma , T. Ma , X. Y. Ma , G. Marsella , M. N. Mazziotta , D. Mo , X. Y. Niu , X. Pan , A. Parenti , W. X. Peng , X. Y. Peng , C. Perrina , R. Qiao , J. N. Rao , A. Ruina , M. M. Salinas , G. Z. Shang , W. H. Shen , Z. Q. Shen , Z. T. Shen , L. Silveri , J. X. Song , M. Stolpovskiy , H. Su , M. Su , Z. Y. Sun , A. Surdo , X. J. Teng , A. Tykhonov , H. Wang , J. Z. Wang , L. G. Wang , S. Wang , X. L. Wang , Y. Wang , Y. F. Wang , Y. Z. Wang , Z. M. Wang , D. M. Wei , J. J. Wei , Y. F. Wei , S. C. Wen , D. Wu , J. Wu , L. B. Wu , S. S. Wu , X. Wu , Z. Q. Xia , H. T. Xu , Z. H. Xu , Z. L. Xu , Z. Z. Xu , G. F. Xue , H. B. Yang , P. Yang , Y. Q. Yang , H. J. Yao , Y. H. Yu , G. W. Yuan , Q. Yuan , C. Yue , J. J. Zang , F. Zhang , S. X. Zhang , W. Z. Zhang , Y. Zhang , Y. J. Zhang , Y. L. Zhang , Y. P. Zhang , Y. Q. Zhang , Z. Zhang , Z. Y. Zhang , C. Zhao , H. Y. Zhao , X. F. Zhao , C. Y. Zhou , Y. Zhu

Precision alignment and tolerance of a plasma wakefield accelerator in a laser-ionized plasma source

We present a novel method for aligning a laser ionized plasma source to a pair of ultra-relativistic electron beams that comprise a plasma wakefield accelerator (PWFA). We achieve alignment by analyzing the plasma afterglow light observed…

Accelerator Physics · Physics 2025-08-26 Valentina Lee , Robert Ariniello , Douglas Storey , Sebastien Corde , Claudio Emma , Spencer Gessner , Mark Hogan , Alexander Knetsch , Nathan Majernik , Brendan O'Shea , Ivan Rajkovic , Michael Litos

Search for anisotropic light propagation as a function of laser beam alignment relative to the Earth's velocity vector

A laser diffraction experiment was conducted to study light propagation in air. The experiment is easy to reproduce and it is based on simple optical principles. Two optical sensors (segmented photo-diodes) are used for measuring the…

Astrophysics · Physics 2007-05-23 C. E. Navia , C. R. A. Augusto , D. F. Franceschini , M. B. Robba , K. H. Tsui

Investigation of hadronic cross sections of cosmic ray carbon and oxygen on BGO from 200 GeV to 10 TeV energy at the DAMPE experiment

The Dark Matter Particle Explorer (DAMPE) has made significant progress in measuring the fluxes of cosmic rays. These new measurements are pivotal in advancing our understanding of the origins and propagation mechanisms of cosmic rays. The…

High Energy Physics - Experiment · Physics 2025-09-23 F. Alemanno , Q. An , P. Azzarello , F. C. T. Barbato , P. Bernardini , X. J. Bi , H. Boutin , I. Cagnoli , M. S. Cai , E. Casilli , E. Catanzani , J. Chang , D. Y. Chen , J. L. Chen , Z. F. Chen , Z. X. Chen , P. Coppin , M. Y. Cui , T. S. Cui , Y. X. Cui , I. De Mitri , F. de Palma , A. Di Giovanni , T. K. Dong , Z. X. Dong , G. Donvito , J. L. Duan , K. K. Duan , R. R. Fan , Y. Z. Fan , F. Fang , K. Fang , C. Q. Feng , L. Feng , P. Fusco , M. Gao , F. Gargano , E. Ghose , K. Gong , Y. Z. Gong , D. Y. Guo , J. H. Guo , S. X. Han , Y. M. Hu , G. S. Huang , X. Y. Huang , Y. Y. Huang , M. Ionica , L. Y. Jiang , Y. Z. Jiang , W. Jiang , J. Kong , A. Kotenko , D. Kyratzis , S. J. Lei , M. B. Li , W. H. Li , W. L. Li , X. Li , X. Q. Li , Y. M. Liang , C. M. Liu , H. Liu , J. Liu , S. B. Liu , Y. Liu , F. Loparco , C. N. Luo , M. Ma , P. X. Ma , T. Ma , X. Y. Ma , G. Marsella , M. N. Mazziotta , D. Mo , Y. Nie , X. Y. Niu , A. Parenti , W. X. Peng , X. Y. Peng , C. Perrina , E. Putti-Garcia , R. Qiao , J. N. Rao , Y. Rong , R. Sarkar , P. Savina , A. Serpolla , Z. Shangguan , W. H. Shen , Z. Q. Shen , Z. T. Shen , L. Silveri , J. X. Song , H. Su , M. Su , H. R. Sun , Z. Y. Sun , A. Surdo , X. J. Teng , A. Tykhonov , G. F. Wang , J. Z. Wang , L. G. Wang , S. Wang , X. L. Wang , Y. F. Wang , D. M. Wei , J. J. Wei , Y. F. Wei , D. Wu , J. Wu , S. S. Wu , X. Wu , Z. Q. Xia , Z. Xiong , E. H. Xu , H. T. Xu , J. Xu , Z. H. Xu , Z. L. Xu , Z. Z. Xu , G. F. Xue , H. B. Yang , P. Yang , Y. Q. Yang , H. J. Yao , M. Y. Yan , Y. H. Yu , Q. Yuan , C. Yue , J. J. Zang , S. X. Zhang , W. Z. Zhang , Y. Zhang , Y. Zhang , Y. J. Zhang , Y. L. Zhang , Y. P. Zhang , Y. Q. Zhang , Z. Zhang , Z. Y. Zhang , C. Zhao , H. Y. Zhao , X. F. Zhao , C. Y. Zhou , Y. Zhu

DAMPE excess from decaying right-handed neutrino dark matter

The flux of high-energy cosmic-ray electrons plus positrons recently measured by the DArk Matter Particle Explorer (DAMPE) exhibits a tentative peak excess at an energy of around $1.4$ TeV. In this paper, we consider the minimal gauged…

High Energy Physics - Phenomenology · Physics 2018-09-03 Nobuchika Okada , Osamu Seto

Temperature Dependence Calibration and Correction of the DAMPE BGO Electromagnetic Calorimeter

A BGO electromagnetic calorimeter (ECAL) is built for the DArk Matter Particle Explorer (DAMPE) mission. The effect of temperature on the BGO ECAL was investigated with a thermal vacuum experiment. The light output of a BGO crystal depends…

Instrumentation and Detectors · Physics 2016-08-03 Yifeng Wei , Zhiyong Zhang , Yunlong Zhang , Sicheng Wen , Chi Wang , Zhiying Li , Changqing Feng , Xiaolian Wang , Zizong Xu , Guangshun Huang , Shubin Liu

Accurate trajectory alignment in cold-atom interferometers with separated laser beams

Cold-atom interferometers commonly face systematic effects originating from the coupling between the trajectory of the atomic wave packet and the wave front of the laser beams driving the interferometer. Detrimental for the accuracy and the…

Atomic Physics · Physics 2020-03-13 M. Altorio , L. A. Sidorenkov , R. Gautier , D. Savoie , A. Landragin , R. Geiger

First measurement of polarisation asymmetry of a gamma-ray beam between 1.74 to 74 MeV with the HARPO TPC

Current $\gamma$-ray telescopes suffer from a gap in sensitivity in the energy range between 100keV and 100MeV, and no polarisation measurement has ever been done on cosmic sources above 1MeV. Past and present e$^+$e$^-$ pair telescopes are…

Instrumentation and Methods for Astrophysics · Physics 2016-09-14 Philippe Gros , Sho Amano , David Attié , Denis Bernard , Philippe Bruel , Denis Calvet , Paul Colas , Schin Daté , Alain Delbart , Mickael Frotin , Yannick Geerebaert , Berrie Giebels , Diego Götz , S. Hashimoto , Deirdr Horan , T. Kotaka , Marc Louzir , Y. Minamiyama , Shuji Miyamoto , H. Ohkuma , Patrick Poilleux , Igor Semeniouk , Patrick Sizun , A. Takemoto , M. Yamaguchi , Shaobo Wang

Validating and optimising mismatch tolerance of Doppler backscattering measurements with the beam model

We use the beam model of Doppler backscattering (DBS), which was previously derived from beam tracing and the reciprocity theorem, to shed light on mismatch attenuation. This attenuation of the backscattered signal occurs when the…

Plasma Physics · Physics 2022-11-09 Valerian H. Hall-Chen , Julius Damba , Felix I. Parra , Quinn T. Pratt , Clive A. Michael , Shi Peng , Terry L. Rhodes , Neal A. Crocker , Jon C. Hillesheim , Rongjie Hong , Shikang Ni , William A. Peebles , Ching Eng Png , Juan Ruiz Ruiz

Design of a large dynamic range readout unit for the PSD detector of DAMPE

A large dynamic range is required by the Plastic Scintillator Detector (PSD) of DArk Matter Paricle Explorer (DAMPE), and a double-dynode readout has been developed. To verify this design, a prototype detector module has been constructed…

Instrumentation and Detectors · Physics 2016-01-28 Yong Zhou , Yuhong Yu , Zhiyu Sun , Yongjie Zhang , Fang Fang , Junling Chen , Bitao Hu