On-orbit performance of the ISS-CREAM SCD

Choi, Gwangho

doi:10.22323/1.358.0048

Cited by 3 publications

(4 citation statements)

References 6 publications

(5 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The measured charge histograms of proton and helium nuclei for the top, second, and third layers of the SCD are shown in Figure 3(a). The statistics of the third layer are lower than the other layers because one quadrant of the third layer was turned off after 2018 August (Choi et al 2019). The charge peaks and charge resolutions of these three layers are consistent.…”

Section: Charge Determinationmentioning

confidence: 95%

See 1 more Smart Citation

Measurement of High-energy Cosmic-Ray Proton Spectrum from the ISS-CREAM Experiment

Choi

Seo

Aggarwal

et al. 2022

ApJ

View full text Add to dashboard Cite

The Cosmic Ray Energetics And Mass for the International Space Station (ISS-CREAM) experiment successfully recorded data for 539 days from 2017 August to 2019 February. We report the energy spectrum of cosmic-ray protons from the ISS-CREAM experiment at energies from 1.60 × 103 to 6.55 × 105 GeV. The measured spectrum deviates from a single power law. A smoothly broken power-law fit to the data, including statistical and systematic uncertainties, shows the spectral index change at 9.0 × 103 GeV from 2.57 ± 0.03 to 2.82 ± 0.02 with a significance of greater than 3σ. This bump-like structure is consistent with a spectral softening recently reported by the balloon-borne CREAM, DAMPE, and NUCLEON, but ISS-CREAM extends measurements to higher energies.

show abstract

Section: Charge Determinationmentioning

confidence: 95%

“…The SCD signal in an analog-to-digital conversion (ADC) unit is converted to the charge unit using the 2016 CERN beam test results (Lee et al 2019). In addition, the gain corrections for all SCD-electronics channels were performed by the charge injection test for the flight data (Choi et al 2019).…”

Section: Charge Determinationmentioning

confidence: 99%

Measurement of High-energy Cosmic-Ray Proton Spectrum from the ISS-CREAM Experiment

Choi

Seo

Aggarwal

et al. 2022

ApJ

View full text Add to dashboard Cite

show abstract

“…ISS-CREAM proton and helium spectra G. H. Choi Figure 3(a) shows the measured charge histogram with proton and helium nuclei in the top, second, and third layers of the SCD. The statistics of the third layer are lower due to the deactivation of one quadrant after August 2018 [8]. For this analysis, the top layer of the SCD was used to maximize statistics.…”

Section: Pos(icrc2023)108mentioning

confidence: 99%

Measurement of cosmic-ray proton and helium spectra from the ISS-CREAM experiment

Choi

2023

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

View full text Add to dashboard Cite

The Cosmic Ray Energetics And Mass for the International Space Station (ISS-CREAM) experiment successfully recorded data for 539 days from Aug. 2017 to Feb. 2019. The ISS-CREAM instrument consists of a Silicon Charge Detector (SCD), carbon targets, a calorimeter (CAL), a top counting detector (TCD), a bottom counting detector (BCD), and a boronated scintillator detector (BSD). In this analysis, the SCD was used for the charge measurements. It comprises four layers, and each SCD layer is finely segmented with 2,688 silicon pixels to minimize charge misidentification due to the backscattered particles. The CAL was used for the energy measurements. It comprises 20 layers of tungsten/scintillating fibers. Each tungsten/scintillating-fiber layer consists of a 50 cm × 50 cm × 3.5 mm tungsten plate, followed by a layer of fifty 1 cm-wide 50 cm-long scintillating-fiber ribbons. The CAL also provides the incident cosmic-ray track and the high-energy trigger. For the low-energy trigger, the TCD and BCD were used. In this paper, we present the proton spectrum from the ISS-CREAM experiment in the energy range of 1.6 -655 TeV and the preliminary helium spectrum in the energy range of 2.7 TeV -1.1 PeV.

show abstract

“…The ISS-CREAM calorimeter consisting of a carbon target, twenty tungsten plates and twenty scintillating-fiber ribbons layers (see [1][2][3]), is shown in Fig. 1 with a cross-sectional view.…”

Section: The Structure Of the Calorimetermentioning

confidence: 99%

Beam Test Results of the ISS-CREAM Calorimeter

Zhang¹

2021

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

View full text Add to dashboard Cite

The Cosmic Ray Energetics And Mass experiment for the International Space Station (ISS-CREAM) was installed on the ISS to measure high-energy cosmic-ray elemental spectra for the charge range Z=1 to 26. The ISS-CREAM instrument includes a tungsten scintillatingfiber calorimeter preceded by carbon targets for energy measurements. The carbon targets induces hadronic interactions, and showers of secondary particles develop in the calorimeter. The calorimeter was calibrated with electron beams at CERN. This beam test included position, energy, and angle scans of electron and pion beams together with a high-voltage scan for calibration and characterization. Additionally, an attenuation effect in the scintillating fibers was studied. In this paper, beam test results, including corrections for the attenuation effect, are presented.

show abstract

On-orbit performance of the ISS-CREAM SCD

Cited by 3 publications

References 6 publications

Measurement of High-energy Cosmic-Ray Proton Spectrum from the ISS-CREAM Experiment

Measurement of High-energy Cosmic-Ray Proton Spectrum from the ISS-CREAM Experiment

Measurement of cosmic-ray proton and helium spectra from the ISS-CREAM experiment

Beam Test Results of the ISS-CREAM Calorimeter

Contact Info

Product

Resources

About