1. Calibration system for the JEM-EUSO mission.
- Author
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Sakaki, Naoto
- Subjects
- *
CALIBRATION , *ASTRONOMICAL observatories , *LIGHT sources , *OPTICS , *DETECTORS , *COSMIC ray showers - Abstract
In order to unveil the mystery of ultra high energy cosmic rays (UHECR's), JEM-EUSO (Extreme Universe Space Observatory on-board Japan Experiment Module) will observe extensive air showers induced by UHECR's from the International Space Station orbit with huge acceptance from 2016. Calibration of the JEM-EUSO instrument, which consists of Fresnel optics and 0.3M channel focal surface detector, is very important to discuss the origin of UHECR's precisely with the observed results. In this paper, the calibration system before launch and on-orbit will be reported: the calibration before flight with integrating spheres, on-board calibration light source, and ground light source for on-orbit calibration from ground. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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