DEVELOPMENT OF A TARGET SYSTEM FOR RARE ISOTOPE BEAM PRODUCTION WITH HIGH-POWER HEAVY-ION BEAMS

摘要

We are designing a graphite target system for the maximum primary beam power of 400 kW for the rare isotope science project in Korea. The main design ion is U beam at the energy of 200 MeV/u in the beam current of roughly 8 pμA. The power density reaches above 50 MW/cm~3 inside the target with the thickness of approximately 2 mm. To enhance radiation cooling, the graphite target is thought to have multiple layer structure. Thermo-mechanical analysis has been performed using PHITS and ANSYS for both single and multi-slice targets. Empirical tests were made using electron beams for single-slice graphite target with the thickness of 0.2 mm. The power density reached around 30 MW/cm~3 and the hot spot temperature was around 900°C, which was measured by using IR cameras.