报告题目:LHAASO Status and First Results

报  告  人:Prof. Zhen Cao,the Institute of High Energy Physics (IHEP)

报告时间:2019-10-31 16:00

报告地点:理科楼郑裕彤讲堂

报告摘要:The Large High Altitude Air Shower Observatory (LHAASO) as the largest ground based Gamma Ray detector array is under construction. The first 1/4 array with the coverage of 1/4 km2 has been put in operation for science. It has an array of 1314 scintillator counters and 304 muon detectors in the array nearby a Water Cherenkov Detector with an active area of 22500 m2. The size of the array is still growing rapidly. By the end of this year, 1/2 of the array will be turned on for scientific operation. The construction of the entire array will be concluded in next year. Finding the galactic Cosmic Ray (CR) origin has been set as the goal of the mega project, by surveying for the gamma ray sources and precisely measuring the gamma ray spectra of them up to 1 PeV. Many related scientific questions can be addressed with the experiment using LHAASO. Preliminary results of the analysis of data taken by the first quarter of array and expectations are presented.