Performance of new 8-inch photomultiplier tube used for the Tibet muon-detector array

  title={Performance of new 8-inch photomultiplier tube used for the Tibet muon-detector array},
  author={Yizhe Zhang and J. Huang and D. Chen and Liuming Zhai and Xinfa Chen and X.-B. Hu and Y.H. Lin and H. B. Jin and X.-Y. Zhang and C. F. Feng and Huan-yu Jia and Xx Zhou and Danzengluobu Danzengluobu and T.-L. Chen and Labaciren Labaciren and M.Y. Liu and Qi Gao and Zhaxiciren Zhaxiciren},
  journal={Journal of Instrumentation},
  pages={P06016 - P06016}
Since 2014, a new hybrid experiment consisting of a high-energy air-shower-core array (YAC-II), a high-density air-shower array (Tibet-III) and a large underground water-Cherenkov muon-detector array (MD) has been continued by the Tibet ASγ collaboration to measure the chemical composition of cosmic rays in the wide energy range including the ``knee''. In this experiment, YAC-II is used to select high energy core events induced by cosmic rays in the above energy region, while MD is used to… 

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