High-resolution mass separator and 60 m beam transport line for the radioactive nuclear beam facility at INS

摘要

A high resolution on-line isotope separator (ISOL) followed by a long beam transport line is under testing at INS, as a pilot radioactive beam facility for the E-arena of the Japanese Hadron Project. The ISOL has a unique feature in its high voltage potential configuration; it has two separation stages and both are electrically insulated from the ground. This feature is effective to eliminate impurities as well as to perform high resolution mass separation while keeping the injection beam velocity to the post accelerator constant. The design concept and present status of performance tests are reported. (author)