A linear radiofrequency quadrupole ion trap for the cooling and bunching of radioactive ion beams

A linear radiofrequency quadrupole ion guide and beam buncher has been installed at the ISOLTRAP mass spectrometry experiment at the ISOLDE facility at CERN. The apparatus is being used as a beam cooling, accumulation, and bunching system. It operates with a buffer gas that cools the injected ions a...

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Detalles Bibliográficos
Autores principales: Kellerbauer, A G, Bollen, G, Dilling, J, Henry, S, Herfurth, F, Kluge, H J, Lamour, E, Moore, R B, Scheidenberger, C, Schwarz, S, Sikler, G, Szerypo, J
Lenguaje:eng
Publicado: 2000
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.1016/S0375-9474(01)01645-1
http://cds.cern.ch/record/590792
Descripción
Sumario:A linear radiofrequency quadrupole ion guide and beam buncher has been installed at the ISOLTRAP mass spectrometry experiment at the ISOLDE facility at CERN. The apparatus is being used as a beam cooling, accumulation, and bunching system. It operates with a buffer gas that cools the injected ions and converts the quasicontinuous 60- keV beam from the ISOLDE facility to 2.5-keV beam pulses with improved normalized transverse emittance. Recent measurements suggest a capture efficiency of the ion guide of up to 40% and a cooling and bunching efficiency of at least 12% which is expected to still be increased. The improved ISOLTRAP setup has so far been used very successfully in three on-line experiments. (12 refs).

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