Maxwell‘s daemon cooling double trap (IMAGE) Heinrich-Heine University Duesseldorf Caption The "Maxwell‘s daemon cooling double trap", which was developed by the BASE collaboration. It can be used to cool antiprotons very quickly to temperatures that are necessary for high-precision measurements. (Photo: BASE-Collaboration / Stefan Ulmer) Credit BASE-Collaboration / Stefan Ulmer 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.