羊八井ARGO实验初期阵列性能  

Study on the Performance of YBJ Preliminary Carpet

作　　者：刘琨[1] 何会海[2] 陈欣[1] 卢红[2] 木钧[1] 沈培若[2] 谭有恒[2] 吴超勇[2] 杨群宇[1] 张慧敏[2] 张勇[2] 

机构地区：[1]云南大学物理系,昆明650091 [2]中国科学院高能物理研究所,北京100039

出　　处：《高能物理与核物理》2004年第9期914-917,共4页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金 ( 10 12 0 13 0 794) ;中国科技部;中国科学院;中国科学院高能物理研究所粒子天体物理重点实验室资助;意大利INFN基金资助~~

摘　　要：中意合作羊八井ARGO实验采用大型RPC阵列探测广延大气簇射事例 ,本文报告了该探测阵列初期建设进展状况及测试运行的包含 16个CLUSTER的局部阵列性能 ,并探讨由此阵列所采集数据重建后的事例芯位、到达方向与角分辨等 .初步测试结果表明RPC阵列可很好地在高海拔、低气压条件下正常运行 .The Sino-Italian collaboration YBJ-ARGO experiment is under construction at the Yang Bajing High Altitude Cosmic Ray Laboratory(Tibet,China,4300m a.s.l.,606g/cm2).About 693m2 of preliminary carpet detector have been instrumented and put into operation for calibration runs devoted to test the performance of the individual components and their integrated operation.Events collected with a 'shower mode' trigger have been recorded to check the consistency of physics data.The performance and characteristics of a preliminary carpet detector are analyzed using its test run data at the high altitude conditions.Shower reconstruction algorithms are described together with the results after time offset correction.Results of the test run show the importance of the time correction for data analysis,and some results concerning detector calibration,azimuth angle distribution,zenith angle distribution and angular resolution are presented.

关 键 词：高能物理学 羊八井ARGO实验 天顶角 方位角 角分辨 芯位 广延大气簇射 

分 类 号：P172.4[天文地球—天文学]