A Magnetic Compton Spectrometer for High Intensity Pulsed Gamma Ray Environments

A magnetic Compton spectrometer is described which was designed to measure the gamma ray spectra from distributed, intense pulsed sources in the presence of gama ray, electron, and/or neutron backgrounds. It has been used to measure spectra of a nuclear device, the Sandia Pulsed Reactor, and the Hermes II flash x-ray machine. A discussion will be given of the design features, the data reduction, and the results of the Hermes II measurement.