TITAN’s digital RFQ ion beam cooler and buncher,operation and performance

Brunner, T.; Smith, M.J.; Brodeur, M.; Ettenauer, S.; Gallant, A.T.; Simon, Vanessa V.; Chaudhuri, A.; Lapierre, A.; Mané, E.; Ringle, R.; Simon, M.C.; Vaz, J.A.; Delheij, P.; Good, M.; Pearson, M.R.; Dilling, Jens

doi:10.1016/j.nima.2012.02.004

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TITAN’s digital RFQ ion beam cooler and buncher,operation and performance

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Simon, Vanessa V.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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http://dx.doi.org/10.1016/j.nima.2012.02.004
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Citation

Brunner, T., Smith, M., Brodeur, M., Ettenauer, S., Gallant, A., Simon, V. V., et al. (2012). TITAN’s digital RFQ ion beam cooler and buncher,operation and performance. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 676, 32-43. doi:10.1016/j.nima.2012.02.004.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-4DA2-0

Abstract

We present a description of the Radio Frequency Quadrupole (RFQ) ion trap built as part of the TITAN facility. It consists of a gas-filled, segmented, linear Paul trap and is the first stage of the TITAN setup with the purpose of cooling and bunching radioactive ion beams delivered from ISAC-TRIUMF. This is the first such device to be driven digitally, i.e., using a high voltage (View the MathML source), wide bandwidth (View the MathML source) square-wave as compared to the typical sinusoidal wave form. Results from the commissioning of the device as well as systematic studies with stable and radioactive ions are presented including efficiency measurements with stable ¹³³Cs and radioactive ^124,126Cs. A novel and unique mode of operation of this device is also demonstrated where the cooled ion bunches are extracted in reverse mode, i.e., in the same direction as previously injected.