The Cosmic Ray Air Fluorescence Fresnel lens Telescope (CRAFFT) for the next generation UHECR observatory
Y. Tameda*, M. Yamamoto, T. Tomida, M. Hayashi, D. Ikeda, T. Fujii, K. Yamazaki and H. Iwakura
August 16, 2017
August 03, 2018
The flux of the ultra high energy cosmic rays (UHECRs) is extremely low, hence we need a huge observatory for UHECR research. On the other hand, the larger the scale of the observatory, the higher the construction cost. In order to launch the next generation UHECR observatory, we should reduce their construction cost, dramatically. Therefore, we are developing a simple structure fluorescence telescope. The telescope consists of a 1 m$^2$ Fresnel lens, an 8 inch photomultiplier tube, a UV transmitting filter, and a FADC board. We will report the status and the result of the test observation at the Telescope Array site.
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