Measurement of the cosmic ray proton spectrum around the knee region with LHAASO

LHAASO Collaboration

Measurement of the cosmic ray proton spectrum around the knee region with LHAASO

LHAASO Collaboration

CAS - Institute of High Energy Physics
TIANFU Cosmic Ray Research Center
University of Chinese Academy of Sciences
Dublin Institute for Advanced Studies
Max Planck Institute for Nuclear Physics
University of Science and Technology of China
University of Science and Technology of China
Southwest Jiaotong University
Sichuan University
Nanjing University
Guangzhou University
Wuhan University
CAS - Purple Mountain Observatory
Hebei Normal University
CAS - Shanghai Astronomical Observatory
Tibet University
CAS - National Astronomical Observatories
Sun Yat-Sen University
University of Naples Federico II
Yunnan University
University of Geneva
Shandong University
Tsinghua University
School of Physics
Institute for Nuclear Research of the Russian Academy of Sciences
Peking University
Guangxi University
Shanghai Jiao Tong University
Mahidol University
Moscow Institute of Physics and Technology
CAS - National Space Science Center

Research output: Contribution to journal › Conference article › peer-review

Abstract

One of the main scientific aims of LHAASO is to measure the energy spectra of cosmic rays for individual mass compositions. LHAASO is made up of three detector arrays, which are WFCTA, KM2A, and WCDA. The three detector arrays can achieve hybrid observation, so several extensive air shower observables that are sensitive to mass compositions can be measured simultaneously. ROOT-TMVA package is used to combine these component-sensitive parameters for selecting proton events. The selected proton events have a purity of over 90%. In this paper, we have selected simulated events with shower cores located in the KM2A array to investigate the feasibility of the analysis method for studying the proton energy spectrum. We have also studied the associated systematic uncertainties, including those introduced by the composition models, proton selection, energy reconstruction method, and hadronic interaction models.

Original language	English
Article number	423
Journal	Proceedings of Science
Volume	444
State	Published - 27 Sep 2024
Externally published	Yes
Event	38th International Cosmic Ray Conference, ICRC 2023 - Nagoya, Japan Duration: 26 Jul 2023 → 3 Aug 2023

Cite this

@article{0081b3bbe38c4132847e1ab0a19b9e99,

title = "Measurement of the cosmic ray proton spectrum around the knee region with LHAASO",

abstract = "One of the main scientific aims of LHAASO is to measure the energy spectra of cosmic rays for individual mass compositions. LHAASO is made up of three detector arrays, which are WFCTA, KM2A, and WCDA. The three detector arrays can achieve hybrid observation, so several extensive air shower observables that are sensitive to mass compositions can be measured simultaneously. ROOT-TMVA package is used to combine these component-sensitive parameters for selecting proton events. The selected proton events have a purity of over 90\%. In this paper, we have selected simulated events with shower cores located in the KM2A array to investigate the feasibility of the analysis method for studying the proton energy spectrum. We have also studied the associated systematic uncertainties, including those introduced by the composition models, proton selection, energy reconstruction method, and hadronic interaction models.",

author = "\{LHAASO Collaboration\} and You Zhiyong and Zhang Shoushan and Yin Liqiao and Ma Lingling and Cao Zhen and Wang Yudong and Zhen Cao and F. Aharonian and Q. An and Axikegu and Bai, \{L. X.\} and Bai, \{Y. X.\} and Bai, \{L. X.\} and Bai, \{Y. X.\} and Bao, \{Y. W.\} and D. Bastieri and Bi, \{X. J.\} and Bi, \{Y. J.\} and H. Cai and Cai, \{J. T.\} and Zhe Cao and J. Chang and Chang, \{J. F.\} and Chen, \{B. M.\} and Chen, \{E. S.\} and J. Chen and Liang Chen and Liang Chen and Long Chen and Chen, \{M. J.\} and Chen, \{M. L.\} and Chen, \{Q. H.\} and Chen, \{S. H.\} and Chen, \{S. Z.\} and Chen, \{T. L.\} and Chen, \{X. L.\} and Y. Chen and N. Cheng and Cheng, \{Y. D.\} and Cui, \{S. W.\} and Cui, \{X. H.\} and Cui, \{Y. D.\} and \{D{\textquoteright}Ettorre Piazzoli\}, B. and Dai, \{B. Z.\} and Dai, \{H. L.\} and Dai, \{Z. G.\} and Danzengluobu and \{della Volpe\}, D. and Dong, \{X. J.\} and Geng, \{L. S.\}",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons.; 38th International Cosmic Ray Conference, ICRC 2023 ; Conference date: 26-07-2023 Through 03-08-2023",

year = "2024",

month = sep,

day = "27",

language = "英语",

volume = "444",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

}

TY - JOUR

T1 - Measurement of the cosmic ray proton spectrum around the knee region with LHAASO

AU - LHAASO Collaboration

AU - Zhiyong, You

AU - Shoushan, Zhang

AU - Liqiao, Yin

AU - Lingling, Ma

AU - Zhen, Cao

AU - Yudong, Wang

AU - Cao, Zhen

AU - Aharonian, F.

AU - An, Q.

AU - Axikegu,

AU - Bai, L. X.

AU - Bai, Y. X.

AU - Bai, L. X.

AU - Bai, Y. X.

AU - Bao, Y. W.

AU - Bastieri, D.

AU - Bi, X. J.

AU - Bi, Y. J.

AU - Cai, H.

AU - Cai, J. T.

AU - Cao, Zhe

AU - Chang, J.

AU - Chang, J. F.

AU - Chen, B. M.

AU - Chen, E. S.

AU - Chen, J.

AU - Chen, Liang

AU - Chen, Long

AU - Chen, M. J.

AU - Chen, M. L.

AU - Chen, Q. H.

AU - Chen, S. H.

AU - Chen, S. Z.

AU - Chen, T. L.

AU - Chen, X. L.

AU - Chen, Y.

AU - Cheng, N.

AU - Cheng, Y. D.

AU - Cui, S. W.

AU - Cui, X. H.

AU - Cui, Y. D.

AU - D’Ettorre Piazzoli, B.

AU - Dai, B. Z.

AU - Dai, H. L.

AU - Dai, Z. G.

AU - Danzengluobu,

AU - della Volpe, D.

AU - Dong, X. J.

AU - Geng, L. S.

PY - 2024/9/27

Y1 - 2024/9/27

N2 - One of the main scientific aims of LHAASO is to measure the energy spectra of cosmic rays for individual mass compositions. LHAASO is made up of three detector arrays, which are WFCTA, KM2A, and WCDA. The three detector arrays can achieve hybrid observation, so several extensive air shower observables that are sensitive to mass compositions can be measured simultaneously. ROOT-TMVA package is used to combine these component-sensitive parameters for selecting proton events. The selected proton events have a purity of over 90%. In this paper, we have selected simulated events with shower cores located in the KM2A array to investigate the feasibility of the analysis method for studying the proton energy spectrum. We have also studied the associated systematic uncertainties, including those introduced by the composition models, proton selection, energy reconstruction method, and hadronic interaction models.

AB - One of the main scientific aims of LHAASO is to measure the energy spectra of cosmic rays for individual mass compositions. LHAASO is made up of three detector arrays, which are WFCTA, KM2A, and WCDA. The three detector arrays can achieve hybrid observation, so several extensive air shower observables that are sensitive to mass compositions can be measured simultaneously. ROOT-TMVA package is used to combine these component-sensitive parameters for selecting proton events. The selected proton events have a purity of over 90%. In this paper, we have selected simulated events with shower cores located in the KM2A array to investigate the feasibility of the analysis method for studying the proton energy spectrum. We have also studied the associated systematic uncertainties, including those introduced by the composition models, proton selection, energy reconstruction method, and hadronic interaction models.

UR - https://www.scopus.com/pages/publications/85212278401

M3 - 会议文章

AN - SCOPUS:85212278401

SN - 1824-8039

VL - 444

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 423

T2 - 38th International Cosmic Ray Conference, ICRC 2023

Y2 - 26 July 2023 through 3 August 2023

ER -

Measurement of the cosmic ray proton spectrum around the knee region with LHAASO

Abstract

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