Klystron Gallery (IMAGE) DOE/Oak Ridge National Laboratory Caption Upgrades to the particle accelerator enabling the record 1.7-megawatt beam power at the Spallation Neutron Source include adding 28 high-power radio-frequency klystrons (the red tubes) to provide higher power for the accelerator. Credit Genevieve Martin/ORNL, U.S. Dept. of Energy Usage Restrictions No restrictions. License Public Domain 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.