EXTREMELY LOW-EMITTANCE LOW-CURRENT RFQ WITH ION-TRAP INJECTOR

摘要

We describe a possible accelerator system to provide an ion beam of extremely low emittance and low current. It can used as a nano beam source for single ion implantation onto semiconductors and for the systematic study of radiation damage in bio-molecules and semiconductors. The whole system basically has a radio-frequency quadrupole configuration with a Paul ion trap as theinjector. Ions are confined and cooled in the trap section, and then accelerated to ～MeV through an RFQ linac. Design speculation is made assuming acceleration of ~7Li~+ ions.