TALE
TALE is the Telescope Array Low Energy extension. It is designed to observe cosmic rays with energies between 3×1016eV and 1019eV. TALE adds 10 new telescopes to the Middle Drum observatory site (24 total telescopes) extending the vertical field of view so that it now extends from 3 to 59 degrees in elevation. This allows the station to see the shower development including shower maximum for lower energy events. This is critical when trying to determine the chemical composition of the incident cosmic ray particle.
The TALE project also has a graded infill array of scintillator stations spaced 400m and 600m apart. It then connects to the main Telescope Array scintillator array where the scintillator detectors are 1200m apart. These stations measure charged particle densities (the shower footprint) at the Earth's surface for lower energy events approaching 3x1016eV
Read more about this topic: Telescope Array Project
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