Development of a Computer Code System for Simulation of Accelerator Target Performance

65750 The target system for the Rare Isotope Accelerator (RIA) will consist of several specially designed targets that utilize a wide variety of high power beams from the driver accelerator. However, the simulation of target performance has many drawbacks: (1) the computer codes for the transport of beam particles and rare isotope production were developed and maintained for other accelerator applications; (2) the database for rare isotope release is sparse and incomplete; (3) no standard thermo-hydraulics code is coupled to the transport code for heat deposition analysis; and (4) the shielding analysis and radioactivity inventory requires a systematic approach that is intrinsically integrated to other parts of the calculation. This project will develop a computer code system that would integrate all of the requirements for an RIA target design. During Phase I, the basic codes for the code system were selected and analyzed, and some calculations were performed to check the codes¿ suitability for targets designed for the RIA. Phase II will modify the codes, develop interfaces to facilitate the flow of data from one code to another, and create an integrated script or user interface to facilitate the use of the code system. Several nuclear models will be introduced into the system, including fragmentation of heavy ions, fission product yields, and light mass elements production. Commercial Applications and Other Benefits as described by the awardee: The computer code system should provide a benchmarked set of codes and procedures, tested for RIA, that can be expanded to a variety of other accelerator systems such as commercial accelerators for radioisotope production, medical applications, and industrial uses.