Prototype (IMAGE) Karlsruher Institut für Technologie (KIT) Caption This is a prototype of one of the new detectors to measure Cherenkov radiation in the IceCube upgrade experiment. Credit DESY, IceCube Collaboration Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.