An ion trap for cooling MCIs with cold positrons
نویسندگان
چکیده
An electro-magnetic trap for cooling multi-charged ions (MCIs) with cold positrons has been designed and is now under construction. A 5-tesla superconducting solenoid in which the trap will be installed has been constructed and installed in the experimental hall. The cooling scheme of MCIs is as follows: 1) loading electrons in the trap on which an electric harmonic potential is applied, 2) cooling of trapped electrons via emission of orbital radiation of cyclotron motion, 3) injection and trapping of positrons through collisions with the pre-loaded electrons and then cyclotron radiation, 4) injection and trapping of MCIs followed by cooling with positrons. The cooled MCIs will be extracted as a low energy MCI beam with well-defined energy, which allows ultra-slow collision experiments with mono-energetic MCIs.
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