ACCELERATOR-DRIVEN TEST FACILITY: MODULAR TARGET AND MULTIPLIER SYSTEM CONCEPT DESIGN DESCRIPTION

摘要

The accelerator-driven test facility (ADTF) modular design concept is a target/multiplier configuration that provides optimum flexibility in operation, and testing. The configuration proposed is based on demonstrated technologies and methods that are currently used in existing facilities. It consists of a centrally located target/multiplier experimental cell surrounded by shielding and three adjacent hot-cells. The experimental cell contains the neutron spallation source and two multiplier segments on either side. When assembled the system closely resembles a central spallation target with a surrounding multiplier in cylindrical geometry. At the completion of an irradiation cycle, target and multiplier components are moved into and out of the experimental cell horizontally from the adjoining hot-cells. All primary heat-removal equipment resides in the hot-cells providing for safe operation and maintenance. Scoping calculations show that reasonably high neutron flux levels are achievable over sufficient volume to meet the goals set for transmutation proof of performance tests. Using a safety by design strategy, a combination of active and passive safety features provide diverse and redundant beam shutdown and decay heat removal.