Author/Authors :
Stanley W. Trimble، نويسنده , , G. Savard، نويسنده , , Gary B. Blank، نويسنده , , J.A Clark، نويسنده , , F. Buchinger، نويسنده , , T. Cocolios، نويسنده , , J.E. Crawford، نويسنده , , A. Frankel، نويسنده , , J.P. Greene، نويسنده , , S. Gulick، نويسنده , , J.K.P. Lee، نويسنده , , A. Levand، نويسنده , , M. Portillo، نويسنده , , K.S. Sharma، نويسنده , , J.C. Wang، نويسنده , , B.J. Zabransky، نويسنده , , Z. Zhou، نويسنده , , the S258 Collaboration، نويسنده ,
Abstract :
A new approach to the production of low energy radioactive beams involves the stopping of fast beams produced by fragmentation or in-flight fission in a large gas catcher where the reaction products are thermalized in high-purity helium and extracted as singly charged ions for post-acceleration. This removes the limitation present in standard ISOL techniques for species that are difficult to extract from the target/ion source assembly. This approach will be implemented in the RIA facility. The demonstration of this new technology is a key R&D goal for RIA and a full scale prototype was constructed and tested, both off-line and on-line, at the ATLAS facility at Argonne. The basic operating principles, techniques used for the construction, and results obtained in off-line and on-line tests are presented. The large gas catcher prototype has now been transported to GSI, where fragmentation products at the full RIA energy are available, for its final test.
