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Telescope Array Project

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The Telescope Array projectCite error: A <ref> tag is missing the closing </ref> (see the help page). The SD array is much like that of the AGASA group, but covers an area that is nine times larger. The hybrid setup of the Telescope Array project allows for simultaneous observation of both the longitudinal development and the lateral distribution of the air showers.

Surface detector

The surface detectors are each distributed on a 1.2km square grid. The effective detection area of the entire SD array is 762km2. Each SD has an assembled weight of 250kg and consists of a power supply, two layers of scintillation detector and electronics. Power is generated by a 120W solar panel and stored in a sealed lead-acid battery. The system has the capacity to operate for one week in complete darkness. Each scintillation detector layer is made of extruded plastic scintillator that is 1.2cm thick and has an area of 3m2. The photo multiplier tube is connected to the scintillator via 96 wave length shifting fibers.

FD station, telescope, and camera

The Telescope Array has three fluorescence detector stations. The stations are located on a triangle about 35km apart from one another. Each station has 12-14 telescopes viewing the range from 3 to 33 degrees in elevation.

The telescopes at two of the sites have combined spherical mirrors.