Optimization of performance of the KM2A full array using the Crab Nebula

LHASSO Collaboration; Cao, Zhen; Aharonian, F.; Axikegu,; Bai , Y. X.; Bao, Y. W.; Bastieri, D.; Bi, X. J.; Bi, Y. J.; Bian, W.; Bukevich, A. V.; Cao, Q.; Cao, W. Y.; Cao, Zhe; Chang, J.; Chang, J. F.; Chen, A. M.; Chen, E. S.; Chen, H. X.; Chen, Liang; Chen, Lin; Chen, Long; Chen, M. J.; Chen, M. L.; Chen, Q. H.; Chen, S.; Chen, S. H.; Chen, S. Z.; Chen, T. L.; Chen, Y.; Cheng, N.; Cheng, Y. D.; Cui, M. Y.; Cui, S. W.; Cui, X. H.; Cui, Y. D.; Dai, B. Z.; Dai, H. L.; Dai, Z. G.; Danzengluobu ,; Dong, X. Q.; Duan, K. K.; Fan, J. H.; Fan, Y. Z.; Fang, J.; Fang, J. H.; Fang, K.; Feng, C. F.; Feng, H.; Feng, L.; Feng, S. H.; Feng, X. T.; Feng, Y.; Feng, Y. L.; Gabici, S.; Gao, B.; Gao, C. D.; Gao, Q.; Gao, W.; Gao, W. K.; Ge, M. M.; Geng, L. S.; Giacinti, G.; Gong, G. H.; Gou, Q. B.; Gu, M. H.; Guo, F. L.; Guo, X. L.; Guo, Y. Q.; Guo, Y. Y.; Han, Y. A.; Hasan, M.; He, H. H.; He, H. N.; He, J. Y.; He, Y.; Hor, Y. K.; Hou, B. W.; Hou, C.; Hou, X.; Hu, H. B.; Hu, Q.; Hu, S. C.; Huang, D. H.; Huang, T. Q.; Huang, W. J.; Huang, X. T.; Huang, X. Y.; Huang, Y.; Ji, X. L.; Jia, H. Y.; Jia, K.; Jiang, K.; Jiang, X. W.; Jiang, Z. J.; Jin, M.; Kang, M. M.; Karpikov, I.; Kuleshov, D.; Kurinov, K.; Li, B. B.; Li, C. M.; Li, Cheng; Li, Cong; Li, D.; Li, F.; Li, H. B.; Li, H. C.; Li, Jian; Li, Jie; Li, K.; Li, S. D.; Li, W. L.; Li, W. L.; Li, X. R.; Li, Xin; Li, Y. Z.; Li, Zhe; Li, Zhuo; Liang, E. W.; Liang, Y. F.; Lin, S. J.; Liu, B.; Liu, C.; Liu, D.; Liu, D. B.; Liu, H.; Liu, H. D.; Liu, J.; Liu, J. L.; Liu, M. Y.; Liu, R. Y.; Liu, S. M.; Liu, W.; Liu, Y.; Liu, Y. N.; Luo, Q.; Luo, Y.; Lv, H. K.; Ma, B. Q.; Ma, L. L.; Ma, X. H.; Mao, J. R.; Min, Z.; Mitthumsiri, W.; Mu, H. J.; Nan, Y. C.; Neronov, A.; Ou, L. J.; Pattarakijwanich, P.; Pei, Z. Y.; Qi, J. C.; Qi, M. Y.; Qiao, B. Q.; Qin, J. J.; Raza, A.; Ruffolo, D.; Sáiz, A.; Saeed, M.; Semikoz, D.; Shao, L.; Shchegolev, O.; Sheng, X. D.; Shu, F. W.; Song, H. C.; Stenkin, Yu. V.; Stepanov, V.; Su, Y.; Sun, D. X.; Sun, Q. N.; Sun, X. N.; Sun, Z. B.; Takata, J.; Tam, P. H. T.; Tang, Q. W.; Tang, R.; Tang, Z. B.; Tian, W. W.; Wang, C.; Wang, C. B.; Wang, G. W.; Wang, H. G.; Wang, H. H.; Wang, J. C.; Wang, Kai; Wang, Kai; Wang, L. P.; Wang, L. Y.; Wang, P. H.; Wang, R.; Wang, W.; Wang, X. G.; Wang, X. Y.; Wang, Y.; Wang, Y. D.; Wang, Y. J.; Wang, Z. H.; Wang, Z. X.; Wang, Zhen; Wang, Zheng; Wei, D. M.; Wei, J. J.; Wei, Y. J.; Wen, T.; Wu, C. Y.; Wu, H. R.; Wu, Q. W.; Wu, S.; Wu, X. F.; Wu, Y. S.; Xi, S. Q.; Xia, J.; Xiang, G. M.; Xiao, D. X.; Xiao, G.; Xin, Y. L.; Xing, Y.; Xiong, D. R.; Xiong, Z.; Xu, D. L.; Xu, R. F.; Xu, R. X.; Xu, W. L.; Xue, L.; Yan, D. H.; Yan, J. Z.; Yan, T.; Yang, C. W.; Yang, C. Y.; Yang, F.; Yang, F. F.; Yang, L. L.; Yang, M. J.; Yang, R. Z.; Yang, W. X.; Yao, Y. H.; Yao, Z. G.; Yin, L. Q.; Yin, N.; You, X. H.; You, Z. Y.; Yu, Y. H.; Yuan, Q.; Yue, H.; Zeng, H. D.; Zeng, T. X.; Zeng, W.; Zha, M.; Zhang, B. B.; Zhang, F.; Zhang, H.; Zhang, H. M.; Zhang, H. Y.; Zhang, J. L.; Zhang, Li; Zhang, P. F.; Zhang, P. P.; Zhang, R.; Zhang, S. B.; Zhang, S. R.; Zhang, S. S.; Zhang, X.; Zhang, X. P.; Zhang, Y. F.; Zhang, Yi; Zhang, Yong; Zhao, B.; Zhao, J.; Zhao, L.; Zhao, L. Z.; Zhao, S. P.; Zhao, X. H.; Zheng, F.; Zhong, W. J.; Zhou, B.; Zhou, H.; Zhou, J. N.; Zhou, M.; Zhou, P.; Zhou, R.; Zhou, X. X.; Zhou, X. X.; Zhu, B. Y.; Zhu, C. G.; Zhu, F. R.; Zhu, H.; Zhu, K. J.; Zou, Y. C.; Zuo, X.

doi:10.1088/1674-1137/ad2e82

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Optimization of performance of the KM2A full array using the Crab Nebula

LHASSO Collaboration, Cao, Z., Aharonian, F., Axikegu, Bai, Y., Bao, Y., et al. (2024). Optimization of performance of the KM2A full array using the Crab Nebula. Chinese Physics C, 48 (6): 065001. doi:10.1088/1674-1137/ad2e82.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000F-4BF1-D Version Permalink: https://hdl.handle.net/21.11116/0000-000F-4BF2-C

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Creators:
LHASSO Collaboration, Author
Cao, Zhen, Author
Aharonian, F.¹, Author
Axikegu, Author
Bai , Y. X., Author
Bao, Y. W., Author
Bastieri, D., Author
Bi, X. J., Author
Bi, Y. J., Author
Bian, W., Author
Bukevich, A. V., Author
Cao, Q., Author
Cao, W. Y., Author
Cao, Zhe, Author
Chang, J., Author
Chang, J. F., Author
Chen, A. M., Author
Chen, E. S., Author
Chen, H. X., Author
Chen, Liang, Author
Chen, Lin, AuthorChen, Long, AuthorChen, M. J., AuthorChen, M. L., AuthorChen, Q. H., AuthorChen, S., AuthorChen, S. H., AuthorChen, S. Z., AuthorChen, T. L., AuthorChen, Y., AuthorCheng, N., AuthorCheng, Y. D., AuthorCui, M. Y., AuthorCui, S. W., AuthorCui, X. H., AuthorCui, Y. D., AuthorDai, B. Z., AuthorDai, H. L., AuthorDai, Z. G., AuthorDanzengluobu , AuthorDong, X. Q., AuthorDuan, K. K., AuthorFan, J. H., AuthorFan, Y. Z., AuthorFang, J., AuthorFang, J. H., AuthorFang, K., AuthorFeng, C. F., AuthorFeng, H., AuthorFeng, L., AuthorFeng, S. H., AuthorFeng, X. T., AuthorFeng, Y., AuthorFeng, Y. L., AuthorGabici, S., AuthorGao, B., AuthorGao, C. D., AuthorGao, Q., AuthorGao, W., AuthorGao, W. K., AuthorGe, M. M., AuthorGeng, L. S., AuthorGiacinti, G., AuthorGong, G. H., AuthorGou, Q. B., AuthorGu, M. H., AuthorGuo, F. L., AuthorGuo, X. L., AuthorGuo, Y. Q., AuthorGuo, Y. Y., AuthorHan, Y. A., AuthorHasan, M., AuthorHe, H. H., AuthorHe, H. N., AuthorHe, J. Y., AuthorHe, Y., AuthorHor, Y. K., AuthorHou, B. W., AuthorHou, C., AuthorHou, X., AuthorHu, H. B., AuthorHu, Q., AuthorHu, S. C., AuthorHuang, D. H., AuthorHuang, T. Q., AuthorHuang, W. J., AuthorHuang, X. T., AuthorHuang, X. Y., AuthorHuang, Y., AuthorJi, X. L., AuthorJia, H. Y., AuthorJia, K., AuthorJiang, K., AuthorJiang, X. W., AuthorJiang, Z. J., AuthorJin, M., AuthorKang, M. M., AuthorKarpikov, I., AuthorKuleshov, D., AuthorKurinov, K., AuthorLi, B. B., AuthorLi, C. M., AuthorLi, Cheng, AuthorLi, Cong, AuthorLi, D., AuthorLi, F., AuthorLi, H. B., AuthorLi, H. C., AuthorLi, Jian, AuthorLi, Jie, AuthorLi, K., AuthorLi, S. D., AuthorLi, W. L., AuthorLi, W. L., AuthorLi, X. R., AuthorLi, Xin, AuthorLi, Y. Z., AuthorLi, Zhe, AuthorLi, Zhuo, AuthorLiang, E. W., AuthorLiang, Y. F., AuthorLin, S. J., AuthorLiu, B., AuthorLiu, C., AuthorLiu, D., AuthorLiu, D. B., AuthorLiu, H., AuthorLiu, H. D., AuthorLiu, J., AuthorLiu, J. L., AuthorLiu, M. Y., AuthorLiu, R. Y., AuthorLiu, S. M., AuthorLiu, W., AuthorLiu, Y., AuthorLiu, Y. N., AuthorLuo, Q., AuthorLuo, Y., AuthorLv, H. K., AuthorMa, B. Q., AuthorMa, L. L., AuthorMa, X. H., AuthorMao, J. R., AuthorMin, Z., AuthorMitthumsiri, W., AuthorMu, H. J., AuthorNan, Y. C., AuthorNeronov, A., AuthorOu, L. J., AuthorPattarakijwanich, P., AuthorPei, Z. Y., AuthorQi, J. C., AuthorQi, M. Y., AuthorQiao, B. Q., AuthorQin, J. J., AuthorRaza, A., AuthorRuffolo, D., AuthorSáiz, A., AuthorSaeed, M., AuthorSemikoz, D., AuthorShao, L., AuthorShchegolev, O., AuthorSheng, X. D., AuthorShu, F. W., AuthorSong, H. C., AuthorStenkin, Yu. V., AuthorStepanov, V., AuthorSu, Y., AuthorSun, D. X., AuthorSun, Q. N., AuthorSun, X. N., AuthorSun, Z. B., AuthorTakata, J., AuthorTam, P. H. T., AuthorTang, Q. W., AuthorTang, R., AuthorTang, Z. B., AuthorTian, W. W., AuthorWang, C., AuthorWang, C. B., AuthorWang, G. W., AuthorWang, H. G., AuthorWang, H. H., AuthorWang, J. C., AuthorWang, Kai, AuthorWang, Kai, AuthorWang, L. P., AuthorWang, L. Y., AuthorWang, P. H., AuthorWang, R., AuthorWang, W., AuthorWang, X. G., AuthorWang, X. Y., AuthorWang, Y., AuthorWang, Y. D., AuthorWang, Y. J., AuthorWang, Z. H., AuthorWang, Z. X., AuthorWang, Zhen, AuthorWang, Zheng, AuthorWei, D. M., AuthorWei, J. J., AuthorWei, Y. J., AuthorWen, T., AuthorWu, C. Y., AuthorWu, H. R., AuthorWu, Q. W., AuthorWu, S., AuthorWu, X. F., AuthorWu, Y. S., AuthorXi, S. Q., AuthorXia, J., AuthorXiang, G. M., AuthorXiao, D. X., AuthorXiao, G., AuthorXin, Y. L., AuthorXing, Y., AuthorXiong, D. R., AuthorXiong, Z., AuthorXu, D. L., AuthorXu, R. F., AuthorXu, R. X., AuthorXu, W. L., AuthorXue, L., AuthorYan, D. H., AuthorYan, J. Z., AuthorYan, T., AuthorYang, C. W., AuthorYang, C. Y., AuthorYang, F., AuthorYang, F. F., AuthorYang, L. L., AuthorYang, M. J., AuthorYang, R. Z., AuthorYang, W. X., AuthorYao, Y. H., AuthorYao, Z. G., AuthorYin, L. Q., AuthorYin, N., AuthorYou, X. H., AuthorYou, Z. Y., AuthorYu, Y. H., AuthorYuan, Q., AuthorYue, H., AuthorZeng, H. D., AuthorZeng, T. X., AuthorZeng, W., AuthorZha, M., AuthorZhang, B. B., AuthorZhang, F., AuthorZhang, H., AuthorZhang, H. M., AuthorZhang, H. Y., AuthorZhang, J. L., AuthorZhang, Li, AuthorZhang, P. F., AuthorZhang, P. P., AuthorZhang, R., AuthorZhang, S. B., AuthorZhang, S. R., AuthorZhang, S. S., AuthorZhang, X., AuthorZhang, X. P., AuthorZhang, Y. F., AuthorZhang, Yi, AuthorZhang, Yong, AuthorZhao, B., AuthorZhao, J., AuthorZhao, L., AuthorZhao, L. Z., AuthorZhao, S. P., AuthorZhao, X. H., AuthorZheng, F., AuthorZhong, W. J., AuthorZhou, B., AuthorZhou, H., AuthorZhou, J. N., AuthorZhou, M., AuthorZhou, P., AuthorZhou, R., AuthorZhou, X. X., AuthorZhou, X. X., AuthorZhu, B. Y., AuthorZhu, C. G., AuthorZhu, F. R., AuthorZhu, H., AuthorZhu, K. J., AuthorZou, Y. C., AuthorZuo, X., Author more..

Affiliations:
1Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society, ou_2074298

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Free keywords: γ-ray, Crab Nebula, significance

Abstract: The 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 ultra-high 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.

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Dates: Published Online: 2024-05-17

Publication Status: Published online

Pages: 11

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Identifiers: DOI: 10.1088/1674-1137/ad2e82

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Title: Chinese Physics C

Other : Chinese Physics C: High Energy and Nuclear Physics

Abbreviation : Chinese Phys.

Source Genre: Journal

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Publ. Info: IOP Publishing : Chinese Physical Society

Pages: - Volume / Issue: 48 (6) Sequence Number: 065001 Start / End Page: - Identifier: ISSN: 2058-6132
CoNE: https://pure.mpg.de/cone/journals/resource/2058-6132