Measurement of the Cosmic-ray Proton + Helium Spectrum with DAMPE

Wang, Zhaomin; Mitri, I. De; Marsella, G.; Elipe, G. Torralba; Valiño, I.

doi:10.22323/1.358.0148

Cited by 5 publications

(4 citation statements)

References 15 publications

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“…The analysis resulted in a significant detection of the Crab nebula, with an excess of 18 events leading to a Li&Ma significance of 5.21 sigma. The expected excess, determined through Monte Carlo simulations incorporating both point-like gamma-rays rescaled to match the Crab spectrum [12] and cosmic rays [13], is estimated to be 28 ± 5 for a total observation time of 2 hours and 38 minutes. The obtained results show a good agreement between the expected performance of the instrument presented in [11] and its actual performance, taking into account a potential discrepancy in energy thresholds between the real instrument and its Monte-Carlo model, as discussed in Section 2.2.…”

Section: Resultsmentioning

confidence: 99%

Analysis of commissioning data from SST-1M : A Prototype of Single-Mirror Small Size Telescope

Tavernier,

Araudo,

Alispach

et al. 2023

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

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SST-1M is a prototype of a single-mirror Small Size Telescope developed by a consortium of institutes from Poland, Switzerland and the Czech Republic. With a wide field of view of 9 degrees, SST-1Ms are designed to detect gamma-rays in the energy range between 1 and 300 TeV. The design of the SST-1M follows the Davies-Cotton concept, with a 9.42m2 multi-segment mirror. SST-1M is equipped with DigiCam camera, which features a fully digital readout and trigger system using 250 MHz ADC, and a compact Photo-Detector Plane (PDP) composed of 1296 pixels, each made of a hexagonal light guide coupled to silicone photomultipliers (SiPM). Two SST-1M telescopes are currently being commissioned at the Ondrejov Observatory in the Czech Republic, where they are successfully observing Cerenkov events in stereo. This contribution will present an overview of calibration strategies and performance evaluation based on data collected at the observatory.

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Section: Resultsmentioning

confidence: 99%

Analysis of commissioning data from SST-1M : A Prototype of Single-Mirror Small Size Telescope

Tavernier,

Araudo,

Alispach

et al. 2023

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

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“…In Fig. 4 the preliminary p+He flux is presented in the energy range 50 GeV -150 TeV, multiplied by E 2.7 , with error bars representing the statistical error, and a continuous band for the systematic uncertainties (see [15] for more details on the preliminary systematics estimation). The DAMPE proton and…”

Section: Results: Proton + Helium Fluxmentioning

confidence: 99%

Measurement of the light component (p+He) energy spectrum with the DAMPE space mission

Alemanno¹,

Bernardini²,

Benedittis³

et al. 2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

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The DArk Matter Particle Explorer (DAMPE) is a space-based particle detector launched in a Sunsynchronous orbit on December 17 th , 2015 from the Jiuquan Satellite Launch Center, in China. It has been taking data very smoothly for more than 5 years. Science goals of the DAMPE mission include the study of the electron-positron energy spectrum, the study of galactic cosmic-rays, gamma-ray astronomy, and indirect dark matter search. Performing precise measurements of light elements in space, the most abundant components of cosmic radiation, is necessary to address major problems in galactic cosmic ray acceleration and propagation mechanisms. Selecting a combined proton and helium sample (instead of proton or helium alone) allows larger efficiency and purity, also minimizing systematic effects in the reconstruction of the energy spectrum, due to possible cross-contaminations. The use of looser analysis cuts allows collecting larger statistics thus extending the covered energy range and providing a link between direct and indirect cosmicray measurements. The measurement of the p+He energy spectrum up to ∼ 150 TeV will be presented, along with a discussion on the features of the spectrum and a comparison with other experimental results.

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“…Figure 4 demonstrates a preliminary MC/data comparison of Hillas parameter distributions for particular run taken on June 12, 2023 at zenith angles between 18 • and 22 • , and diffuse proton MC simulated at 20 • zenith angle. The spectrum of simulated protons was re-weighted on DAMPE p+He spectrum [20] to correct for the Cosmic-Ray (CR) composition. We note that the distributions are of all events that survived image cleaning and no quality cuts were applied.…”

Section: Monte Carlo Simulations Of Sst-1mmentioning

confidence: 99%

Monte Carlo study of single SST-1M prototype for Cherenkov Telescope Array

Jurýšek¹,

Samarai²,

Alispach³

et al. 2019

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)

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The Single-Mirror Small-Sized Telescope, or SST-1M, was originally developed as a prototype of a small-sized telescope for CTA, designed to form an array for observations of gamma-ray-induced atmospheric showers for energies above 3 TeV. A pair of SST-1M telescopes is currently being commissioned at the Ondřejov Observatory in the Czech Republic, and the telescope capabilities for mono and stereo observations are being tested in better astronomical conditions. The final location for the telescopes will be decided based on these tests. In this contribution, we present a data analysis pipeline called sst1mpipe, and the performance of the telescopes when working independently and in a stereo regime.

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Measurement of the Cosmic-ray Proton + Helium Spectrum with DAMPE

Cited by 5 publications

References 15 publications

Analysis of commissioning data from SST-1M : A Prototype of Single-Mirror Small Size Telescope

Analysis of commissioning data from SST-1M : A Prototype of Single-Mirror Small Size Telescope

Measurement of the light component (p+He) energy spectrum with the DAMPE space mission

Monte Carlo study of single SST-1M prototype for Cherenkov Telescope Array

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