ARGO-YBJ实验“Scaler模式”计数的气象效应

对中意合作西藏ARGO|YBJ实验“Scaler模式”下次级宇宙线计数的气象效应进行了讨论， 计算了计数率与大气压强、 室外温度、 大气电场及实验大厅内温度、 湿度等5个气象参量的偏相关系数。结果表明， 大气压强与次级宇宙线计数有很强的负相关， 与室外温度也有一定的负相关， 而实验大厅顶部的大气电场与实验记录的次级宇宙线计数基本没有关联。 另外， 实验大厅内温度也是影响次级宇宙线地面测量的一个重要因素， 实验大厅内的湿度也有一定影响。 随着符合多重数的增加， 实验大厅内温度和湿度的影响变得不再重要。 另外， 对次级宇宙线计数率进行了多参量的气象效应修正。 结果表明， 这种修正是可靠的, 为进一步利用ARGO|YBJ实验“Scaler模式”下的实验数据进行各种物理分析打下了基础。

Meteorological Effect on the "Scaler Mode" Counts of ARGO-YBJ Experiment

The Meteorological effects on “Scaler mode” secondary cosmic ray counts were discussed for the Sino|Italian cooperated experiment ARGO|YBJ in the Tibet Autonomous Region of China. The partial correlation coefficients were calculated between the counts and some environmental variables, such as the atmospheric air pressure, the temperature outside and inside the experimental hall, the atmospheric electric field and the humidity inside the hall. The results showed that there was a strong negative correlation between the counting rate of secondary cosmic ray and the atmospheric air pressure, and a moderate correlation was seen between the counts and the temperature outside of the hall. On the other hand, the atmospheric electric field had no correlation with the counts. The temperature inside the hall had an important influence on the secondary cosmic ray counts at low multiplicity (n=1) and the humidity inside the hall also had some influence. The larger the multiplicity, the less was the importance of the temperature and the humidity inside the hall. The data of “Scaler mode” counts has been corrected by taking into account its linear correlation with the multiple meteorological parameters. This correction was reliable and important for further physics analysis.