COSY (IMAGE) Forschungszentrum Juelich Caption In their experiment, the JEDI scientists utilized a special feature of the Jülich particle accelerator COSY: the use of polarized beams. Credit Forschungszentrum Jülich / Ralf-Uwe Limbach Usage Restrictions none License Original 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.