LIDAR system of CLF

UV fluorescence light generated by an air shower is scattered and lost along the path of propagation to the telescope. The cause of the main scattering is due to the atmospheric molecule and the aerosol. The calibration of a decrease in the photocount by scattering the atmosphere is very important as well as the calibration of the Fluorescence Detectors (FD). Two atmospheric scattered monitoring devices (LIDAR and CLF) have already been operating in the Telescope Array (TA) experiment. New LIDAR system is constructed at CLF and concentrated the advantage of two current atmospheric transparency monitoring devices. It reports on the upgrade of an existing atmospheric scattered monitoring device in TA in this paper.