| Title: | Analysis Result of the High-Energy Cosmic-Ray Proton Spectrum from the ISS-CREAM Experiment |
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| Authors: | ID Choi, G. (Author)
ID Lundquist, Jon Paul (Author), et al. |
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| Files: |  ICRC2021_094.pdf (2,06 MB)
MD5: 6DC3833954B89A29C17D1991F78C6EEC
 https://pos.sissa.it/395/094/
https://pos.sissa.it/395/094/pdf
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| Language: | English |
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| Work type: | Not categorized |
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| Typology: | 1.08 - Published Scientific Conference Contribution |
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| Organization: | UNG - University of Nova Gorica
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| Abstract: | The Cosmic Ray Energetics And Mass for the International Space Station (ISS-CREAM) experiment successfully recorded the data for about 539 days from August 2017 to February 2019. In this talk, we report the measurement of the cosmic-ray proton energy spectrum from the ISS-CREAM experiment in the energy range of 2.5 TeV - 650 TeV. For the analysis, we used the silicon charge detector (SCD) placed at the top of the ISS-CREAM payload to identify the incoming cosmic-ray charge. The SCD is finely segmented to minimize charge misidentification due to backscatter effects. The four-layer SCD consists of 10,752 silicon pixels, each of which is 1.37×1.57×0.05 cm^3 in size. The calorimeter (CAL) consists of 20 layers of tungsten/scintillating fibers preceded by carbon targets. It provided cosmic-ray tracking, energy determination, and the high-energy trigger. The Top and Bottom Counting detectors (T/BCD) are above and below the CAL, respectively, and provided the low energy trigger. Each T/BCD is composed of an array of 20×20 photodiodes on plastic scintillators. The measured proton spectral index of 2.67±0.02 between 2.5 and 12.5 TeV is consistent with prior CREAM measurements. The spectrum softens above ∼10 TeV consistent with the bump-like structure as reported by CREAM-I+III, DAMPE, and NUCLEON, but ISS-CREAM extends measurements to higher energies than those prior measurement |
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| Keywords: | ISS-CREAM, silicon charge detector, calorimeter, direct detection, cosmic rays, protons, energy spectrum |
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| Publication status: | Published |
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| Year of publishing: | 2022 |
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| PID: | 20.500.12556/RUNG-8466  |
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| COBISS.SI-ID: | 165880067 |
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| DOI: | 10.22323/1.395.0094 |
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| NUK URN: | URN:SI:UNG:REP:8GIOXOTY |
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| Publication date in RUNG: | 26.09.2023 |
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| Views: | 1411 |
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| Downloads: | 7 |
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