A protoype explosives-detection system (EDS) that was developed for experimental evaluation of a nuclear-resonance absorption technique is described. The major subsystems are a proton accelerator and beam transport, high-temperature proton target, an airlineluggage tomographic inspection station, and an imageprocessing/detection-alarm subsystem. The detection system performance, based on a limited experimental test, is reported.

A laboratory protoype system has been developed for the experimental evaluation of an explosives detection technique based on nuclear resonance absorption of gamma rays in nitrogen. Major subsystems include a radiofrequency quadrupole proton accelerator and associated beam transport system, a high-power gamma-ray production target, an airline-luggage tomographic inspection station, and an image-processing/detection-alarm subsystem. The detection system performance, based on a limited experimental test, is reported.

We have developed a CAMAC module for analyzing neutron multiplicities. Reduction in dead time over previous methods has been made possible by providing independent detector channels. We have achieved a considerable reduction in circuitry by utilizing RAM and PROM integrated circuits in a nonstandard fashion. Along with specially developed algorithms, the module has been able to successfully unfold overlapping multiplicity chains for count rates varying over three orders of magnitude.

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We describe a new pulse arrival-time recording system that is being developed at Alamos. The new PATRM/PCI (Pulse Arrival-Time Recording ModuleFeripheral Component Interconnect) has had several features added. These features enhance our time-correlation-measurement capabilities. By applying the latest advances in electronics and computer technology we are able to increase capability over existing instrumentation while lowering the per channel cost. The modular design approach taken allows easy configuration of both small and large systems.