Description and status of the US/JAERI HFIR-MFE-RB-10J irradiation capsule

This report describes the HFIR-MFE-RB-10J experiment conducted under the US DOE/Japan Atomic Energy Research Institute Collaborative Testing Program. The irradiation will take place in a Removable Beryllium (RB) position in the High Flux Isotope Reactor (HFIR) for approximately 8 cycles (about 4 dpa in steel). The experiment consists of two distinct parts: the upper region of the capsule will contain vanadium specimens operating at either 420 or 480 C and the lower region will contain austenitic and ferritic/martensitic steel specimens operating at 250 C. The capsule will be surrounded by a Eu{sub 2}O{sub 3} shield in order to harden the spectrum and prevent unwanted transmutations.