NDLI: THE ARCADE RAMAN LIDAR SYSTEM FOR THE CHERENKOV TELESCOPE ARRAY

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THE ARCADE RAMAN LIDAR SYSTEM FOR THE CHERENKOV TELESCOPE ARRAY

Content Provider	Semantic Scholar
Author	Valore, Laura Aramo, C. Doro, Mutsuko Iarlori, Marco Rizi, Vincenzo Tonachini, Aurelio S. Vallania, Piero
Copyright Year	2015
Abstract	The Cherenkov Telescope Array (CTA) is the next generation o f gr und-based very high energy gamma-ray instruments; the facility will be organized in tw o arrays, one for each hemisphere. The atmospheric calibration of the CTA telescopes is a criti cal task. The atmosphere affects the measured Cherenkov yield in several ways: the air-shower de velopment itself, the variation of the Cherenkov angle with altitude, the loss of photons due to sca ttering and absorption of Cherenkov light out of the camera field-of-view and the scattering of ph otons into the camera. In this scenario, aerosols are the most variable atmospheric componen t in time and space and therefore need a continuous monitoring. Lidars are among the most used inst ruments in atmospheric physics to measure the aerosol attenuation profiles of light. The ARCAD E Lidar system is a very compact and portable Raman Lidar system that has been built within th e FIRB 2010 grant and is currently taking data in Lamar, Colorado. The ARCADE Lidar is proposed to operate at the CTA sites with the goal of making a first survey of the aerosol conditions of t he selected site and to use it as a calibrated benchmark for the other Lidars that will be insta lled on site. It is proposed for CTA that the ARCADE Lidar will be first upgraded in Italy and then t ested in parallel to a Lidar of the EARLINET network in L’Aquila. Upgrades include the addi tion of the water vapour Raman channel to the receiver and the use of new and better performi ng electronics. It is proposed that the upgraded system will travel to and characterize both CTA sites, starting from the first selected site in 2016.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://pos.sissa.it/236/968/pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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