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

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

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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 astron-omy,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.

cosmic rayEASknee regionLHAASOENDA

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

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College of Physics,Hebei Normal University,Shijiazhuang 050024,China

Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

TIANFU Cosmic Ray Research Center,Chengdu 610000,China

College of Science,Tibet University,Lhasa 850000,China

Key Laboratory of Comic Rays,Ministry of Education,Tibet University,Lhasa 850000,China

Institute for Nuclear Research of the Russian Academy of Sciences,Moscow 117312,Russia

School of Physical Science and Technology,Southwest Jiaotong University,Chengdu 610031,China

School of Management Science and Engineering,Hebei University of Economics and Business,Shijiazhuang 050061,China

Moscow Institute of Physics and Technology,Moscow 141700,Russia

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National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)Hebei Natural Science Foundation

1232010100512373105U20311031220524411963004A2019207004

2024

10.1007/s11467-023-1383-2

物理学前沿
高等教育出版社

物理学前沿

CSTPCD
影响因子：0.816
ISSN：2095-0462
年,卷(期)：2024.19(4)