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

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

doi:10.1016/j.nima.2012.02.004

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

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

Research output: Contribution to journal › Article › peer-review

83 Scopus citations

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 (V _pp=400V), wide bandwidth (0.2<f <1.2MHz) 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.

Original language	English
Pages (from-to)	32-43
Number of pages	12
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	676
DOIs	https://doi.org/10.1016/j.nima.2012.02.004
State	Published - Jun 1 2012
Externally published	Yes

Funding

TRIUMF receives federal funding via a contribution agreement with the National Research Council of Canada (NRC). This work was funded by NSERC and NRC. One of the authors (TB) acknowledges support by evangelisches Studienwerk e.V. Villigst. A.G. acknowledges support from NSERC PGS-M program and S.E. from the Vanier CGS program. The pictures displayed in Fig. 9 were provided by TRIUMF.

Funders	Funder number
Natural Sciences and Engineering Research Council of Canada
National Rehabilitation Center

Keywords

Buffer-gas cooling
Digital ion trap
Reverse extraction
RFQ confinement
TITAN

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10.1016/j.nima.2012.02.004

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Brunner, T., Smith, M. J., Brodeur, M., Ettenauer, S., Gallant, A. T., Simon, V. V., Chaudhuri, A., Lapierre, A., Mané, E., Ringle, R., Simon, M. C., Vaz, J. A., Delheij, P., Good, M., Pearson, M. R., & Dilling, J. (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. https://doi.org/10.1016/j.nima.2012.02.004

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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 (V pp=400V), wide bandwidth (0.2133Cs 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.",

keywords = "Buffer-gas cooling, Digital ion trap, Reverse extraction, RFQ confinement, TITAN",

author = "T. Brunner and Smith, {M. J.} and M. Brodeur and S. Ettenauer and Gallant, {A. T.} and Simon, {V. V.} and A. Chaudhuri and A. Lapierre and E. Man{\'e} and R. Ringle and Simon, {M. C.} and Vaz, {J. A.} and P. Delheij and M. Good and Pearson, {M. R.} and J. Dilling",

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Brunner, T, Smith, MJ, Brodeur, M, Ettenauer, S, Gallant, AT, Simon, VV, Chaudhuri, A, Lapierre, A, Mané, E, Ringle, R, Simon, MC, Vaz, JA, Delheij, P, Good, M, Pearson, MR & Dilling, J 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, vol. 676, pp. 32-43. https://doi.org/10.1016/j.nima.2012.02.004

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AU - Brunner, T.

AU - Smith, M. J.

AU - Brodeur, M.

AU - Ettenauer, S.

AU - Gallant, A. T.

AU - Simon, V. V.

AU - Chaudhuri, A.

AU - Lapierre, A.

AU - Mané, E.

AU - Ringle, R.

AU - Simon, M. C.

AU - Vaz, J. A.

AU - Delheij, P.

AU - Good, M.

AU - Pearson, M. R.

AU - Dilling, J.

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AB - 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 (V pp=400V), wide bandwidth (0.2133Cs 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.

KW - Buffer-gas cooling

KW - Digital ion trap

KW - Reverse extraction

KW - RFQ confinement

KW - TITAN

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JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

ER -

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

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Keywords

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