Cherenkov radiation is also a key mechanism behind ultra high energy cosmic ray (UHECR) detectors. UHECR are understood to be nuclei, not gamma rays. For ground based detectors, light tight water tanks are fitted with photo multipliers to capture the flash of cherenkov light even secondary particles pass through the water.
Additionally, they can use telescopes pointed at the atmosphere, using the atmosphere as a calorimeter, basically. The primary signal those telescopes look for is fluorescence, but when the direction of travel points at the telescope, cherenkov light far outstrips it in brightness, so it has to be included in the event reconstruction.
Most prominent contemporary example is the Pierre Auger Observatory https://auger.org
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Cherenkov radiation is also a key mechanism behind ultra high energy cosmic ray (UHECR) detectors. UHECR are understood to be nuclei, not gamma rays. For ground based detectors, light tight water tanks are fitted with photo multipliers to capture the flash of cherenkov light even secondary particles pass through the water.
Additionally, they can use telescopes pointed at the atmosphere, using the atmosphere as a calorimeter, basically. The primary signal those telescopes look for is fluorescence, but when the direction of travel points at the telescope, cherenkov light far outstrips it in brightness, so it has to be included in the event reconstruction.
Most prominent contemporary example is the Pierre Auger Observatory https://auger.org