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

A. Kellerbauer, G. Bollen, J. Dilling, S. Henry, F. Herfurth, H. J. Kluge, E. Lamour, R. B. Moore, C. Scheidenberger, S. Schwarz, G. Sikler, J. Szerypo

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

A linear radio-frequency quadrupole ion guide and beam buncher has been installed at the ISOLTRAP mass spectrometry experiment at he 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 very successfully in three on-line experiments.

Original languageEnglish
Pages (from-to)565-569
Number of pages5
JournalNuclear Physics A
Volume701
Issue number1-4
DOIs
StatePublished - Apr 22 2002
Externally publishedYes

Funding

This work was financially supported by the European Commission within the EXO-TRAPS RTD project under contract ERBFMGECT980099 as well as by the Natural Sciences and Engineering Research Council of Canada (NSERC).

FundersFunder number
Natural Sciences and Engineering Research Council of Canada
European CommissionERBFMGECT980099

    Keywords

    • Atomic masses
    • Buffer gas cooling
    • Ion guide
    • Ion trap
    • Mass spectrometry
    • Radioactive ions beams

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