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SUMMARY:Title: Progress of Electron-Neutron Detector Array (ENDA)
DTSTART;VALUE=DATE-TIME:20230627T100000Z
DTEND;VALUE=DATE-TIME:20230627T101500Z
DTSTAMP;VALUE=DATE-TIME:20260415T012448Z
UID:indico-contribution-200@indico.nevod.mephi.ru
DESCRIPTION:Speakers: Mao-Yuan Liu (Science School\, Tibet University\, Lh
 asa\, Tibet 850000\, China)\nAbstract-The origin of cosmic rays can be dec
 iphered by accurately measuring the components and energy spectrum in the 
 knee region. Extensive air shower (EAS) studies rely on information provid
 ed by secondary high energy hadrons\, which generate evaporation neutrons 
 when they interact with matter in the environment. In the early 21st centu
 ry\, the electron-neutron detector (EN-detector) was developed at the Inst
 itute for Nuclear Research of the Russian Academy of Science (INR RAS). Th
 e PRImary Spectrum Measurement Array (PRISMA) project was introduced to en
 hance the array capabilities of cosmic ray composition separation and impr
 ove measurement accuracy. Within the framework of Chinese-Russian cooperat
 ion\, at the Large High Altitude Air Shower Observatory (LHAASO) at Mt. Ha
 izi (4400 m a.s.l.) in Daocheng\, Sichuan province\, China\, a proposal wa
 s launched to establish the EN-Detector Array (ENDA) composed of 400 detec
 tors in area of $10\,000 m^{2}$ to measure cosmic rays up to 300 PeV. In 2
 018\, a cluster\, having 16 EN-detectors\, at Tibet University (TU) in Lha
 sa\, Tibet\, China (3700 m a.s.l.) was built to test specification of the 
 array. Since 2019\, another cluster so called ENDA-16 has started running 
 at LHAASO\, and here we give the first result of thermal neutron distribut
 ion. After gaining experience from these previous works\, since April 2023
 \, we have successfully extended ENDA to ENDA-64 composed of 64 detectors 
 in area of $1\,000 m^{2}$ at LHAASO to measure cosmic rays from 400TeV to 
 20 PeV\, and we will describe status of ENDA-64 and hybrid detection of co
 smic ray by using ENDA and LHAASO.\n\nhttps://indico.nevod.mephi.ru/event/
 9/contributions/200/
LOCATION:National Research Nuclear University MEPhI B-100
URL:https://indico.nevod.mephi.ru/event/9/contributions/200/
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