Research on the knee region of cosmic ray by using a novel type of electron-neutron detector array  

作　　者：Bing-Bing Li Xin-Hua Ma Shu-Wang Cui Hao-Kun Chen Tian-Lu Chen Danzengluobu Wei Gao Hai-Bing Hu Denis Kuleshov Kirill Kurinov Hu Liu Mao-Yuan Liu Ye Liu Da-Yu Peng Yao-Hui Qi Oleg Shchegolev Yuri Stenkin Li-Qiao Yin Heng-Yu Zhang Liang-Wei Zhang 

机构地区：[1]College of Physics,Hebei Normal University,Shijiazhuang 050024,China [2]Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China [3]TIANFU Cosmic Ray Research Center,Chengdu 610000,China [4]College of Science,Tibet University,Lhasa 850000,China [5]Key Laboratory of Comic Rays,Ministry of Education,Tibet University,Lhasa 850000,China [6]Institute for Nuclear Research of the Russian Academy of Sciences,Moscow 117312,Russia [7]School of Physical Science and Technology,Southwest Jiaotong University,Chengdu 610031,China [8]School of Management Science and Engineering,Hebei University of Economics and Business,Shijiazhuang 050061,China [9]Moscow Institute of Physics and Technology,Moscow 141700,Russia

出　　处：《Frontiers of physics》2024年第4期13-24,共12页物理学前沿（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(NSFC,Nos.12320101005,12373105,U2031103,12205244,and 11963004);Hebei Natural Science Foundation(No.A2019207004).

摘　　要：By accurately measuring composition and energy spectrum of cosmic ray,the origin problem of so called“knee”region(energy>one PeV)can be solved.However,up to the present,the results of the spectrum in the knee region obtained by several previous experiments have shown obvious differences,so they cannot give effective evidence for judging the theoretical models on the origin of the knee.Recently,the Large High Altitude Air Shower Observatory(LHAASO)has reported several major breakthroughs and important results in astro-particle physics field.Relying on its advantages of wide-sky survey,high altitude location and large area detector arrays,the research content of LHAASO experiment mainly includes ultra high-energy gamma-ray astronomy,measurement of cosmic ray spectra in the knee region,searching for dark matter and new phenomena of particle physics at higher energy.The electron and thermal neutron detector(EN-Detector)is a new scintillator detector which applies thermal neutron detection technology to measure cosmic ray extensive air shower(EAS).This technology is an extension of LHAASO.The EN-Detector Array(ENDA)can highly efficiently measure thermal neutrons generated by secondary hadrons so called“skeleton”of EAS.In this paper,we perform the optimization of ENDA configuration,and obtain expectations on the ENDA results,including thermal neutron distribution,trigger efficiency and capability of cosmic ray composition separation.The obtained real data results are consistent with those by the Monte Carlo simulation.

关 键 词：cosmic ray EAS knee region LHAASO ENDA 

分 类 号：O57[理学—粒子物理与原子核物理]