Performances and long-term stability of the LHAASO-KM2A prototype array

LIU Jia; SHENG Xiang-Dong; HE Hui-Hai; ZHAO Jing; CHANG Jin-Fan; GU Min-Hao; HOU Chao; L&Uuml; Hong-Kui

doi:10.1088/1674-1137/38/2/026001

Chinese Physics C> 2014, Vol. 38> Issue(2) : 026001 DOI: 10.1088/1674-1137/38/2/026001

Performances and long-term stability of the LHAASO-KM2A prototype array

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Abstract：
A prototype array for the LHAASO-KM2A, which consists of 42 detector units and fully overlaps the ARGO-YBJ experiment, was set up at the Yangbajing cosmic ray observatory and has been in stable operation since Octoter 2010. The resulting performances of the KM2A electromagnetic particle detector prototypes fully meet the design requirements. Through hybrid observation of cosmic ray showers with the ARGO-YBJ experiment, the performances and long-term stability of the prototype array are tested and the results are consistent with expectation. The cosmic ray moon shadow observed by the prototype array is also presented.

References

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CAO Zhen. Chinese Physics C (HEP NP), 2010, 34(2): 4, 249-252[2] HE Hai-Hui et al. (LHAASO collaboration). ICRC2009, Poland[3] SHENG Xiang-Dong et al. (LHAASO collaboration). ICRC2011, China[4] XIAO Gang et al. (LHAASO collaboration). ICRC2011, China[5] Aielli G et al. Nuclear Insrtuments and Methods A, 2006, 562: 92[6] GU Min-Hao et al. (LHAASO collaboration). ICRC2011, China[7] MA Xin-Hua et al. (LHAASO collaboration). ICRC2011, China[8] Bartoli B et al. The Astrophysical Journal, 2011, 734: 110 (8pp)

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LIU Jia, SHENG Xiang-Dong, HE Hui-Hai, ZHAO Jing, CHANG Jin-Fan, GU Min-Hao, HOU Chao and LÜ Hong-Kui. Performances and long-term stability of the LHAASO-KM2A prototype array[J]. Chinese Physics C, 2014, 38(2): 026001. doi: 10.1088/1674-1137/38/2/026001

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Received: 2013-03-21
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Performances and long-term stability of the LHAASO-KM2A prototype array

Corresponding author: LIU Jia,

Received Date: 2013-03-21
Accepted Date: 1900-01-01
Available Online: 2014-02-05

Abstract: A prototype array for the LHAASO-KM2A, which consists of 42 detector units and fully overlaps the ARGO-YBJ experiment, was set up at the Yangbajing cosmic ray observatory and has been in stable operation since Octoter 2010. The resulting performances of the KM2A electromagnetic particle detector prototypes fully meet the design requirements. Through hybrid observation of cosmic ray showers with the ARGO-YBJ experiment, the performances and long-term stability of the prototype array are tested and the results are consistent with expectation. The cosmic ray moon shadow observed by the prototype array is also presented.