Optimization of performance of the KM2A full array using the Crab Nebula<sup>*</sup>

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dc.contributor.authorCao Z.
dc.contributor.authorAharonian F.
dc.contributor.authorAn Q.
dc.contributor.authorAxikegu
dc.contributor.authorBai Y.X.
dc.contributor.authorBao Y.W.
dc.contributor.authorBastieri D.
dc.contributor.authorBi X.J.
dc.contributor.authorBi Y.J.
dc.contributor.authorCai J.T.
dc.contributor.authorCao Q.
dc.contributor.authorCao W.Y.
dc.contributor.authorCao Z.
dc.contributor.authorChang J.
dc.contributor.authorChang J.F.
dc.contributor.authorChen A.M.
dc.contributor.authorChen E.S.
dc.contributor.authorChen L.
dc.contributor.authorChen L.
dc.contributor.authorChen L.
dc.contributor.authorChen M.J.
dc.contributor.authorChen M.L.
dc.contributor.authorChen Q.H.
dc.contributor.authorChen S.H.
dc.contributor.authorChen T.L.
dc.contributor.authorChen Y.
dc.contributor.authorCheng N.
dc.contributor.authorCheng Y.D.
dc.contributor.authorCui M.Y.
dc.contributor.authorCui S.W.
dc.contributor.authorCui X.H.
dc.contributor.authorCui Y.D.
dc.contributor.authorDai B.Z.
dc.contributor.authorDai H.L.
dc.contributor.authorDai Z.G.
dc.contributor.authorDanzengluobu
dc.contributor.authorVolpe D.d.
dc.contributor.authorDong X.Q.
dc.contributor.authorDuan K.K.
dc.contributor.authorFan J.H.
dc.contributor.authorFan Y.Z.
dc.contributor.authorFang J.
dc.contributor.authorFang K.
dc.contributor.authorFeng C.F.
dc.contributor.authorFeng L.
dc.contributor.authorFeng S.H.
dc.contributor.authorFeng X.T.
dc.contributor.authorFeng Y.L.
dc.contributor.authorGabici S.
dc.contributor.authorGao B.
dc.contributor.authorGao C.D.
dc.contributor.authorGao L.Q.
dc.contributor.authorGao Q.
dc.contributor.authorGao W.
dc.contributor.authorGao W.K.
dc.contributor.authorGe M.M.
dc.contributor.authorGeng L.S.
dc.contributor.authorGiacinti G.
dc.contributor.authorGong G.H.
dc.contributor.authorGou Q.B.
dc.contributor.authorGu M.H.
dc.contributor.authorGuo F.L.
dc.contributor.authorGuo X.L.
dc.contributor.authorGuo Y.Q.
dc.contributor.authorGuo Y.Y.
dc.contributor.authorHan Y.A.
dc.contributor.authorHe H.H.
dc.contributor.authorHe H.N.
dc.contributor.authorHe J.Y.
dc.contributor.authorHe X.B.
dc.contributor.authorHe Y.
dc.contributor.authorHeller M.
dc.contributor.authorHor Y.K.
dc.contributor.authorHou B.W.
dc.contributor.authorHou C.
dc.contributor.authorHou X.
dc.contributor.authorHu H.B.
dc.contributor.authorHu Q.
dc.contributor.authorHu S.C.
dc.contributor.authorHuang D.H.
dc.contributor.authorHuang T.Q.
dc.contributor.authorHuang W.J.
dc.contributor.authorHuang X.T.
dc.contributor.authorHuang X.Y.
dc.contributor.authorHuang Y.
dc.contributor.authorHuang Z.C.
dc.contributor.authorJi X.L.
dc.contributor.authorJia H.Y.
dc.contributor.authorJia K.
dc.contributor.authorJiang K.
dc.contributor.authorJiang X.W.
dc.contributor.authorJiang Z.J.
dc.contributor.authorJin M.
dc.contributor.authorKang M.M.
dc.contributor.authorKe T.
dc.contributor.authorKuleshov D.
dc.contributor.authorKurinov K.
dc.contributor.authorLi B.B.
dc.contributor.authorLi C.
dc.contributor.authorLi C.
dc.contributor.correspondenceCao Z.
dc.contributor.otherMahidol University
dc.date.accessioned2024-05-30T18:13:42Z
dc.date.available2024-05-30T18:13:42Z
dc.date.issued2024-06-01
dc.description.abstractThe full array of the Large High Altitude Air Shower Observatory (LHAASO) has been in operation since July 2021. For its kilometer-square array (KM2A), we optimized the selection criteria for very high and ultrahigh energy γ-rays using data collected from August 2021 to August 2022, resulting in an improvement in significance of the detection in the Crab Nebula of approximately 15%, compared with that of previous cuts. With the implementation of these new selection criteria, the angular resolution was also significantly improved by approximately 10% at tens of TeV. Other aspects of the full KM2A array performance, such as the pointing error, were also calibrated using the Crab Nebula. The resulting energy spectrum of the Crab Nebula in the energy range of 10-1000 TeV are well fitted by a log-parabola model, which is consistent with the previous results from LHAASO and other experiments.
dc.identifier.citationChinese Physics C Vol.48 No.6 (2024)
dc.identifier.doi10.1088/1674-1137/ad2e82
dc.identifier.issn16741137
dc.identifier.scopus2-s2.0-85193954170
dc.identifier.urihttps://repository.li.mahidol.ac.th/handle/20.500.14594/98534
dc.rights.holderSCOPUS
dc.subjectPhysics and Astronomy
dc.titleOptimization of performance of the KM2A full array using the Crab Nebula<sup>*</sup>
dc.typeArticle
mu.datasource.scopushttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85193954170&origin=inward
oaire.citation.issue6
oaire.citation.titleChinese Physics C
oaire.citation.volume48
oairecerif.author.affiliationState Key Laboratory of Particle Detection &amp; Electronics
oairecerif.author.affiliationYunnan Observatories
oairecerif.author.affiliationNanjing University
oairecerif.author.affiliationShanghai Astronomical Observatory Chinese Academy of Sciences
oairecerif.author.affiliationInstitute for Nuclear Research of the Russian Academy of Sciences
oairecerif.author.affiliationShandong University
oairecerif.author.affiliationYunnan University
oairecerif.author.affiliationInstitute of High Energy Physics, Chinese Academy of Sciences
oairecerif.author.affiliationUniversity of Chinese Academy of Sciences
oairecerif.author.affiliationIN2P3 - Institut National de Physique Nucléaire et de Physique Des Particules
oairecerif.author.affiliationGuangzhou University
oairecerif.author.affiliationTsinghua University
oairecerif.author.affiliationShanghai Jiao Tong University
oairecerif.author.affiliationSun Yat-Sen University
oairecerif.author.affiliationUniversity of Science and Technology of China
oairecerif.author.affiliationZhengzhou University
oairecerif.author.affiliationInstitiúid Ard-Lénn Bhaile Átha Cliath
oairecerif.author.affiliationSichuan University
oairecerif.author.affiliationNational Astronomical Observatories Chinese Academy of Sciences
oairecerif.author.affiliationMax-Planck-Institut für Kernphysik
oairecerif.author.affiliationSouthwest Jiaotong University
oairecerif.author.affiliationPurple Mountain Observatory Chinese Academy of Sciences
oairecerif.author.affiliationUniversité de Genève
oairecerif.author.affiliationHebei Normal University
oairecerif.author.affiliationTibet University
oairecerif.author.affiliationMoscow Institute of Physics and Technology
oairecerif.author.affiliationTIANFU Cosmic Ray Research Center

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