Application of the nitrogen laser calibration system in LHAASO-WFCTA

	Application of the nitrogen laser calibration system in LHAASO-WFCTA
	Chen, Long 35; Li, Xin 35; Ge, Lisi 34; Liu, Hu 35; Sun, Qinning 35; Wang, Yang 35; Xia, Junji 35; Zhu, Fengrong 35; Zhang, Yong 34; Cao, Zhen 31,32,33
	2022-03-18
会议日期	2021-07-12
会议地点	Virtual, Berlin, Germany
卷号	395
英文摘要	The nitrogen laser calibration system for the Wide Field of View Cherenkov Telescope Array (WFCTA) is one of the most important components of the Large High Altitude Air Shower Observatory (LHAASO). This calibration system is composed of three parts, including a high-precision 3D lifting and rotating platform (HiRoP), a nitrogen laser and the wide field of view Cherenkov telescope prototypes. The accuracy of the HiRoP is of great importance for the precise calibration of WFCTA since it controls the laser beam’s pointing direction. A home-made HiRoP was introduced and the measurements implies that the angular and lifting accuracies of HiRoP are better than 0.003° and 0.075 mm, respectively. Furthermore, the pulse energy stability of the nitrogen laser beam is another remarkably important factor. The nitrogen laser system with a wavelength of 337.1 nm located in a high-precision temperature and humidity’s controlling container, resulting in a pulse energy fluctuation less than 3 percent. Besides, the method of a standard zero point verification is employed to improve the long-term accuracy of the beam pointing direction. © Copyright owned by the author(s).
产权排序	第31完成单位
会议录	Proceedings of Science
资助机构	Department of Science and Technology of Sichuan Province[2020YFSY001] ; Department of Science and Technology of Sichuan Province[2021YFSY003]
会议录出版者	Sissa Medialab Srl
文献子类	Conference article (CA)
学科主题	天文学 ; 天体物理学 ; 高能天体物理学 ; 核科学技术
语种	英语
内容类型	会议论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/25681]
专题	星系类星体研究组
作者单位	1.National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China 2.Key Laboratory of Radio Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Jiangsu, Nanjing, 210023, China; 3.Moscow Institute of Physics and Technology, Moscow, 141700, Russia; 4.Department of Physics, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand; 5.Yunnan Observatories, Chinese Academy of Sciences, Yunnan, Kunming, 650216, China; 6.Tsung-Dao Lee Institute, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, China; 7.School of Physical Science and Technology, Guangxi University, Guangxi, Nanning, 530004, China; 8.School of Physics, Peking University, Beijing, 100871, China; 9.Institute for Nuclear Research of Russian Academy of Sciences, Moscow, 117312, Russia; 10.School of Physics and Microelectronics, Zhengzhou University, Henan, Zhengzhou, 450001, China;
推荐引用方式 GB/T 7714	Chen, Long,Li, Xin,Ge, Lisi,et al. Application of the nitrogen laser calibration system in LHAASO-WFCTA[C]. 见:. Virtual, Berlin, Germany. 2021-07-12.