Köln 2004 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 4: Instrumentation and Applications I

HK 4.7: Talk

Monday, March 8, 2004, 17:30–17:45, C

The radiofrequency cooler and buncher for the TRIµP facility — •E. Traykov, L. Huisman, A. Rogachevskiy, M. Sanchez-Vega, E. Traykov, L. Willmann, H. Wilschut, and K. Jungmann — Kernfysisch Versneller Instituut, Rijksuniversiteit Groningen, Netherlands

For the new facility TRIµP at the Kernfysisch Versneller Instituut (KVI) in Groningen a radiofrequency quadrupole cooling and bunching system has been developed. The system was designed to accept low charged ions from radioactive isotopes in the several 10 eV range from a magnetic separator device after they have been pre-cooled in collisions with matter. The radiofrequency quadrupole provides radial focussing and low pressure gas allows further cooling for ions. At its end the device has an electrodynamic potential minimum to collect the particles. Through appropriate switching of dc voltages a bunched beam can be extracted. A novel DC and AC voltage coupling scheme for such devices will be discussed.