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Cesium iodide crystals, part of the ktev (kaons at the tevatron) experiment.
shown are cesium iodide crystals, part of the detector at the ktev (kaons at the tevatron) program designed to determine why there is more matter than antimatter in the universe. This is one of the many fixed target-experiments performed at fermi-lab's tevatron. The fixed-target approach is used for more controlled environments, for precision experiments, and for searches and studies of rare phenomena.
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