A gamma-sensitive safety instrument for critical experiments is described which responds to a scram condition in less than five milliseconds. It was intended as a backup device having considerably faster response than conventional operating instruments. Twelve such instruments were used for some time on critical experiments. The experience with these instruments to date is summarized and recommendations are made for changes intended to enhance the reliability, stability, and ease of adjustment. The possibility of using the instrument as a reliable remote-area neutron or gamma monitor is discussed. (auth)
U.S. Atomic Energy Commission depository collection.
Note
DOE contract number: AT-11-1-GEN-8 NSA number: NSA-16-014306 OSTI Identifier 4785507 Research organization: Atomics International. Div. of North American Aviation, Inc., Canoga Park, Calif.