Second Stage Mass Separation

Due to the nature of the nuclear reactions which produce the RIBs and the proximity of stable target material elements to the mass of the radioactive ion, the likelihood of producing a beam containing several species with nearly identical m/q values is quite high. In order to achieve well defined experimental conditions by delivering a 'pure' beam to the target, a high resolution second stage mass separator is utilized to filter out these 'isobars'. The system has been designed to achieve a resolving power of m/Dm~20,000 with a high quality beam. In practice, some what lower resolving powers are realized due to energy widths which are larger than ideal DE>10 eV. A GIOS output of the optics of this separator is shown here.

RIB Injector | Target | Ion Source | HV Platform | Charge Exchange Cell | Isobar Separator | Beam Development


This page was last updated on February 11, 1999

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