A γ/hadron separation analysis is described for the observed air shower events with primary energy above 100 TeV based on the Tibet ASγ detector configuration. The shower age and size parameters are fitted from the measured lateral density distribution and used as discrimination variables. According to the MC simulation while taking into account the systematic uncertainty estimated from data and MC comparison, it is found that 70% of the cosmic ray (CR) background can be rejected while more than 78% of the γ-rays can be retained. Sensitivity for 100 TeV γ-rays observation can thus be improved by at least 40%.

Calibration of pulse transit time through a cable for EAS experiments) 2 XUE Liang( ) 1 ZHANG Xue-Yao( ) 1 ZHANG Yi( ) 2;1)

引用格式： 高吉喜， 宋婷， 张彪， 等. 北京城市绿地群落结构对降温增湿功能的影响 [J]. 资源科学， 2016， 38 (6) ： 1028-1038. [Gao J X， Song T， Zhang B， et al. The relationship between urban green space community structure and air temperature reduction and humidity increase in Beijing [J]. Resources Science， 2016， 38 (6) ：

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