Layout optimization and performance analysis of large array of imaging atmospheric Cherenkov telescopes  

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作  者:Zhipeng Zhang Ruizhi Yang Shoushan Zhang Zhen Xie Jiali Liu Liqiao Yin Yudong Wang Lingling Ma Zhen Cao 张志鹏;杨睿智;张寿山;谢禛;刘加丽;尹丽巧;王玉东;马玲玲;曹臻(School of Astronomy and Space Science,University of Science and Technology of China,Hefei 230026,China;CAS Key Laboratory for Research in Galaxies and Cosmology,Department of Astronomy,University of Science and Technology of China,Hefei 230026,China;Deep Space Exploration Laboratory/School of Physical Sciences,University of Science and Technology of China,Hefei 230026,China;Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Beijing 100049,China;Department of Physics,University of Chinese Academy of Sciences,Beijing 100049,China;Tianfu Cosmic Ray Research Center,Chengdu 610299,China)

机构地区:[1]School of Astronomy and Space Science,University of Science and Technology of China,Hefei 230026,China [2]CAS Key Laboratory for Research in Galaxies and Cosmology,Department of Astronomy,University of Science and Technology of China,Hefei 230026,China [3]Deep Space Exploration Laboratory/School of Physical Sciences,University of Science and Technology of China,Hefei 230026,China [4]Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Beijing 100049,China [5]Department of Physics,University of Chinese Academy of Sciences,Beijing 100049,China [6]Tianfu Cosmic Ray Research Center,Chengdu 610299,China

出  处:《Chinese Physics C》2025年第3期161-170,共10页中国物理C(英文版)

基  金:supported by the National Nature Science Foundation of China(12041305);the National Youth Thousand Talents Program in China,and the Sichuan Science and Technology Department,Institute of High Energy Physics(2023YFSY0014,E25156U1);supported by the Sichuan Province Science Foundation for Distin-guished Young Scholars(2022JDJQ0043);the Sichuan Science and Technology Department(2023YFSY0014);the Xiejialin Foundation of IHEP(E2546IU2);the National Natural Science Foundation of China(12261141691),and the Innovation Project of IHEP(E25451U2)。

摘  要:The large array of imaging atmospheric Cherenkov telescopes(LACT)is a planned array of 32 Cherenkov telescopes,each featuring 6-m diameter mirrors,to be constructed at the LHAASO site.This study focused on optimizing the array layout and analyzing the performance of LACT.Two observation modes were examined:large zenith angle observations for ultra-high energy events and small zenith angle observations for lower energy thresholds.For large zenith angles(60°),simulations indicate that an 8-telescope subarray can achieve an effective area of 3km^(2)with excellent angular resolution.For small zenith angles,we optimized the layout of 4-telescope cells and the full 32-telescope array.The energy threshold of the full array is approximately 200 GeV,which is particularly crucial for studying transient phenomena such as gamma-ray bursts(GRBs)and active galactic nuclei(AGNs).This study provides essential guidance for finalizing the LACT layout design and estimating performance under various observational conditions.It also highlights the potential of LACT for conducting deep observations of ultra-high energyγ-ray sources,performing morphological studies of PeVatrons,and advancing time-domainγ-ray astronomy.

关 键 词:IACT Γ-RAY LHAASO 

分 类 号:O57[理学—粒子物理与原子核物理]

 

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