Author:
Sun Qinning,Xie Lei,Yuan Guotao,Chen Long,Wang Yang,Zhu Fengrong,Zhang Yong,Zhang Shoushan
Abstract
Abstract
The Large High Altitude Air Shower Observatory (LHAASO) is located in Haizi Mountain,
Daocheng County, Sichuan Province, with an average altitude of 4410 m. The Wide Field of view
Cherenkov Telescope Array (WFCTA) is one of its three observation arrays. Laser calibration system
for WFCTA consists of 2 nitrogen lasers and 1 Nd:YAG laser system. During the operation of WFCTA,
the outdoor temperature may dropped from 17 °C to about -30 °C, which will bring
serious challenges to the operation of laser calibration system operating in the field. In order
to ensure the stable working environment and remote operation of the laser, we have developed the
LHAASO-WFCTA laser temperature control, remote control and data monitoring system. The fluctuation
of temperature in the box is within 1 °C around the target. The laser temperature control
system was officially put into operation in Sept. 2020. In this paper, the design scheme,
fabrication scheme, comparison of heat dissipation coefficient and test of temperature control
system are introduced. The working data shows that both nitrogen molecule lasers and Nd:YAG laser
temperature control system can achieve stable and long-term operation in high-altitude extreme
field.
Subject
Mathematical Physics,Instrumentation
Cited by
3 articles.
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