LHAASO-WFCTA中高灵敏度雨雪传感器的研制  

Development of High Sensitivity Rain and Snow Sensor in LHAASO-WFCTA

作　　者：吕智骁 于正航 杨宜林 陈博旸 汪永福 陈龙[1] 祝凤荣 张勇[2] Lv Zhixiao;Yu Zhenghang;Yang Yilin;Chen Boyang;Wang Yongfu;Chen Long;Zhu Fengrong;Zhang Yong(Southwest Jiaotong University,Chengdu 611756,China;Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]西南交通大学,四川成都611756 [2]中国科学院高能物理研究所,北京100049

出　　处：《天文研究与技术》2023年第6期583-590,共8页Astronomical Research & Technology

基　　金：国家自然科学基金(12105233,12173039)资助.

摘　　要：高海拔宇宙线观测站(Large High Altitude Air Shower Observatory,LHAASO)位于四川省稻城县海子山,平均海拔4410 m,属于典型的高寒山地气候,天气变化迅速。广角切伦科夫望远镜阵列(Wide Field of view Cherenkov Telescope Array,WFCTA)是LHAASO三大观测阵列之一,需要在晴朗的夜晚工作。为保证望远镜的正常运行,需要时刻检测雨雪情况,保证广角切伦科夫望远镜阵列在雨雪天气时及时关闭。但由于气温过低,传统的雨雪传感器在站点不能正常工作,因此需要改进仪器增加加热装置。通过实验室研究完成了加热装置设计,并在现场进行了实地检测。结果表明,高灵敏度雨雪传感器可以在站点低温环境下使探测表面温度保持在零度以上,可以实时有效地监测雨雪天气,为广角切伦科夫望远镜的正常运行提供了重要的支撑。The Large High Altitude Air Shower Observatory(LHAASO)is located in Haizi Mountain,Daocheng County,Sichuan Province,with an average altitude of 4410 meters.It belongs to a typical alpine climate with rapid weather changes.The Wide Field of view Cherenkov Telescope Array(WFCTA),as one of the three major observation arrays of LHAASO,requires operation in the clear nights.To ensure the normal operation of the telescope,it is necessary to constantly detect rain and snow conditions,so that WFCTA can be closed promptly in case of rain and snow weather.However,due to the low temperature,traditional rain and snow sensors cannot work properly at the LHAASO site.Therefore,the heating device was induced to make the rain and snow sensors fit the weather in Daocheng.After designing and testing in the laboratory,the on-site experiment was also carried out at the LHAASO site.The results show that the high-sensitivity rain and snow sensor can maintain the temperature above ice point at the surface of the sensor in horrible weather,and can effectively monitor rain and snow in real-time at the LHAASO site,which can provide strong support for the normal operation of the Wide Field of view Cherenkov Telescope Array.

关 键 词：雨雪监控 雨雪传感器 加热装置 高海拔宇宙线观测站 

分 类 号：P111.4[天文地球—天文学]