The Time Project Chamber (IMAGE) University of Massachusetts Amherst Caption This is half of the innermost detector for EXO-200, a so-called Time Projection Chamber, before it was installed inside the copper cryostat. Credit UMass Amherst 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.