The Solar Two 20–300 GeV Gamma-Ray Observatory

Zweerink, J. A.; Bhattacharya, D.; Mohanty, G.; Mohideen, U.; Radu, A.; Rieben, R.; Souchkov, V.; Tom, H.; Tumer, T. O.
April 2000
AIP Conference Proceedings;2000, Vol. 510 Issue 1, p627
Academic Journal
The Solar Two Gamma-Ray Observatory is designed to close the energy gap between 20–300 GeV that is inaccessible by current instruments, such as the satellite-borne EGRET detector and the ground-based air Cherenkov telescopes. Utilizing the facilities of the Solar Two Power Plant in Barstow, CA, the observatory will detect the Cherenkov light generated as high-energy gamma rays and charged cosmic-ray particles interact with the atmosphere. With over 2000 heliostats available, Solar Two has the largest heliostat mirror area in the world and, thus, the potential to be the most sensitive gamma-ray detector at these energies. Construction of a secondary mirror system capable of imaging 32 heliostats is nearing completion with plans for the first observations of the Crab Nebula in late November. We report on the design, status and testing of this secondary mirror system including the optics, electronics, and heliostat field. © 2000 American Institute of Physics.


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