Cosmic-ray helium nuclei measurement with the calorimeter of the Alpha Magnetic Spectrometer

Feng-ze Zhang; Zhi-Cheng Tang; Zu-Hao Li; Cheng Zhang; Ze-Tong Sun; Jia-Yu Hu; Shang-Lin Li; Guo-Ming Chen; He-Sheng Chen

doi:10.1007/s41605-022-00336-2

Volume 6 Issue 3

Sep. 2022

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Abstract

References

Radiation Detection Technology and Methods > 2022 > 6(3): 427-432 > doi: 10.1007/s41605-022-00336-2

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Cosmic-ray helium nuclei measurement with the calorimeter of the Alpha Magnetic Spectrometer

1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China;
2. University of Chinese Academy of Sciences, Beijing, 100049, China

Funds:

The funding was provided by China Sponsorship Council (Grant Number: 202004910534).

More Information

Received Date: February 22, 2022
Revised Date: May 15, 2022
Accepted Date: June 07, 2022
Available Online: October 16, 2022
Published Date: February 22, 2022

Abstract

Abstract

Purpose The distributions of energy responses of helium measured by the electromagnetic calorimeter (ECAL) of Alpha Magnetic Spectrometer (AMS-02) in Monte-Carlo do not agree with those in real data, thus using energy response matrix obtained from Monte-Carlo to measure the cosmic ray helium spectrum is not correct. Therefore, the spectrum measured with ECAL based on raw Monte-Carlo would be different from the real one. The purpose is to correct the response matrix to measure helium spectrum with ECAL.
Methods The energy measured by ECAL of AMS-02 provides in-flight correction for the energy response matrix in Monte-Carlo.
Results The spectrum based on corrected response matrix is consistent with the AMS collaboration published result.
Conclusions It is feasible to measure helium spectrum with ECAL with corrected energy response matrix.
- Cosmic rays,
- Helium spectrum,
- Electromagnetic calorimeter,
- Monte Carlo simulation

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References (20)

References

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Feng-ze Zhang, Zhi-Cheng Tang, Zu-Hao Li, et al. Cosmic-ray helium nuclei measurement with the calorimeter of the Alpha Magnetic Spectrometer[J]. Radiation Detection Technology and Methods, 2022, 6(3): 427-432. DOI: 10.1007/s41605-022-00336-2

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