Vacuum System (IMAGE) Physikalisch-Technische Bundesanstalt (PTB) Caption The vacuum system for the testing environment at the new test beamline. Credit (Photo: ASML) 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.