ProtoDUNE Dtectors at CERN (image) DOE/Brookhaven National Laboratory Share Print E-Mail Caption The two ProtoDUNE test beds at CERN are proper particle detectors: They will record particle tracks coming from cosmic rays and from a proton accelerator beam. Credit CERN Usage Restrictions OK for use with stories about this research, with credit to CERN. Share Print E-Mail 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.