Calibrating laser test-beams for cosmic-ray observatories

Details Calibrating laser test-beams for cosmic-ray observatories Calibrating laser test-beams for cosmic-ray observatories

2011-05-20

arxiv.org/abs/1105.4016v1

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

4 pages, 7 figures, 32nd International Cosmic Ray Conference, Lodz Poland, 2009

Scientific paper

Pulsed UV lasers can provide useful "testbeams" for observatories that use optical detectors, especially fluorescence detectors, to measure high energy cosmic-rays. The light observed by the detector is proportional to the energy of the laser pulse. Since the absolute laser energy can be measured locally, a well-calibrated laser offers a practical way to test the photometric calibration of the cosmic-ray detector including atmospheric corrections. This poster will describe a robotic system for laser polarization and energy calibration. Laboratory measurements of laser energies and polarizations by energy probes from different manufactures will be presented

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