Laser and Target Area System Developed for the Dynamic Compression SectorOctober, 2016
The University of Rochester’s Laboratory for Laser Energetics (LLE) developed a 100-J UV laser and target area system for the Dynamic Compression Sector (DCS) at the Advanced Photon Source (APS) located at the Argonne National Laboratory near Chicago. This new research facility is operated by Washington State University (WSU) under sponsorship from the National Nuclear Security Administration (NNSA). LLE partnered with Logos Technologies to develop and build the high-energy laser, which is suitable for a broad range of applications. The APS is a state-of-the-art user facility dedicated to dynamic compression science, a field that researches materials under extreme conditions.
A novel target area system designed by LLE includes a target chamber, target positioner, and optical train to deliver the laser. In addition to the port used to deliver the laser beam, the target chamber includes 15 large ports for target diagnostics and auxiliary systems and smaller ports for the Target Viewing System. The target chamber translates horizontally and vertically to align the target with various APS x-ray beam positions. The chamber also rotates through 135° to change the laser angle of incidence with respect to the x-ray beam; this supports a range of different experimental configurations. The laser beam path in the target area is an extension of the laser clean room envelope. LLE has implemented an existing OMEGA target position design with a target holder capable of holding up to 24 targets. These targets can be step indexed without breaking the target chamber vacuum. Delivery of the DCS target area system will take place in early 2017 at which time the DCS will be available to national and international scientific users.
Other scientific collaborators in the DCS research activities include the U.S. Department of Energy National Nuclear Safety Administration, several academic institutions, national laboratories (Lawrence Livermore, Los Alamos, and Sandia) and the Department of Defense laboratories, including both the Army Research and Naval Research Laboratories.