Technical Report: Absolute Radiometric Calibration at NSLS

For nearly 20 years the U3c and X8a beamlines at the National Synchrotron Light Source (NSLS) have been used for absolute calibration and X-ray characterization of detectors and optics. The motivation behind this capability has been the need of the U.S. Department of Energy's National Nuclear Security Agency (DOE-NNSA) programs at other U.S. national laboratories (Livermore, Sandia, and Los Alamos) to provide diagnostics capabilities for high-temperature plasma physics experiments. For example, specific applications of regularly NSLS-calibrated diagnostics are found at Livermore's National Ignition Facility (NIF) and Sandia's Z machine.