An advanced radio-frequency quadrupole ion cooler for accelerator mass spectrometry

M. Schiffer; O. Machhart; A. Priller; S. Herb; G. Hackenberg; S. Heinze; M. Martschini; E. Strub; T. Dunai; R. Golser; A. Dewald

doi:10.1016/j.nimb.2022.07.010

An advanced radio-frequency quadrupole ion cooler for accelerator mass spectrometry

M. Schiffer (Corresponding author), O. Machhart, A. Priller, S. Herb, G. Hackenberg, S. Heinze, M. Martschini, E. Strub, T. Dunai, R. Golser, A. Dewald

Isotope Physics

Publications: Contribution to journal › Article › Peer Reviewed

Abstract

An advanced radio-frequency quadrupole (RFQ) ion cooler was developed for accelerator mass spectrometry to use element-selective laser photodetachment and ion-molecule reactions for isobar suppression. The system will be installed as a central part of the new Anion Laser Isobar Separator (ALIS) at the 6 MV AMS system of CologneAMS. The new RFQ design intends to solve the technical challenge of the deceleration and trapping of heavy molecular ion beams with high emittance. Therefore, an elliptical injection electrode was developed to slow down the ions far away from the central entrance aperture. A new and easy-to-manufacture guide-field assembly was developed. For this purpose, diagonally-split cylindrical surface electrodes are capacitively coupled to a core rod that is carrying the RF signal. Consequently, only low DC voltages are needed to create a gradually changing potential in the longitudinal direction. The RFQ and the acceleration electrodes are installed in a self-aligned structure.

Original language	English
Pages (from-to)	27-33
Number of pages	7
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	528
DOIs	https://doi.org/10.1016/j.nimb.2022.07.010
Publication status	Published - 1 Oct 2022

Austrian Fields of Science 2012

103014 Nuclear physics

Keywords

Sr
Accelerator mass spectrometry
ALIS
AMS
CologneAMS
ILIAMS
Ion beam cooler
Ion-laser interaction
Isobar suppression
RFQ
VERA

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https://lehre4.rad.univie.ac.at/share/WWW_Exchange/All_Isotopenphysik/VERA%20Publications/Papers/NIMB_PROCEEDINGS-S-22-00056.pdfLicence: CC BY-NC-ND 4.0

Cite this

Schiffer, M., Machhart, O., Priller, A., Herb, S., Hackenberg, G., Heinze, S., Martschini, M., Strub, E., Dunai, T., Golser, R., & Dewald, A. (2022). An advanced radio-frequency quadrupole ion cooler for accelerator mass spectrometry. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 528, 27-33. https://doi.org/10.1016/j.nimb.2022.07.010

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abstract = "An advanced radio-frequency quadrupole (RFQ) ion cooler was developed for accelerator mass spectrometry to use element-selective laser photodetachment and ion-molecule reactions for isobar suppression. The system will be installed as a central part of the new Anion Laser Isobar Separator (ALIS) at the 6 MV AMS system of CologneAMS. The new RFQ design intends to solve the technical challenge of the deceleration and trapping of heavy molecular ion beams with high emittance. Therefore, an elliptical injection electrode was developed to slow down the ions far away from the central entrance aperture. A new and easy-to-manufacture guide-field assembly was developed. For this purpose, diagonally-split cylindrical surface electrodes are capacitively coupled to a core rod that is carrying the RF signal. Consequently, only low DC voltages are needed to create a gradually changing potential in the longitudinal direction. The RFQ and the acceleration electrodes are installed in a self-aligned structure.",

keywords = "Sr, Accelerator mass spectrometry, ALIS, AMS, CologneAMS, ILIAMS, Ion beam cooler, Ion-laser interaction, Isobar suppression, RFQ, VERA",

author = "M. Schiffer and O. Machhart and A. Priller and S. Herb and G. Hackenberg and S. Heinze and M. Martschini and E. Strub and T. Dunai and R. Golser and A. Dewald",

note = "Funding Information: The authors acknowledge the support by the RADIATE project under the Grant Agreement 824096 from the EU Research and Innovation program HORIZON 2020. Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

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Schiffer, M, Machhart, O, Priller, A, Herb, S, Hackenberg, G, Heinze, S, Martschini, M, Strub, E, Dunai, T, Golser, R & Dewald, A 2022, 'An advanced radio-frequency quadrupole ion cooler for accelerator mass spectrometry', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 528, pp. 27-33. https://doi.org/10.1016/j.nimb.2022.07.010

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AU - Machhart, O.

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AU - Herb, S.

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AU - Heinze, S.

AU - Martschini, M.

AU - Strub, E.

AU - Dunai, T.

AU - Golser, R.

AU - Dewald, A.

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N2 - An advanced radio-frequency quadrupole (RFQ) ion cooler was developed for accelerator mass spectrometry to use element-selective laser photodetachment and ion-molecule reactions for isobar suppression. The system will be installed as a central part of the new Anion Laser Isobar Separator (ALIS) at the 6 MV AMS system of CologneAMS. The new RFQ design intends to solve the technical challenge of the deceleration and trapping of heavy molecular ion beams with high emittance. Therefore, an elliptical injection electrode was developed to slow down the ions far away from the central entrance aperture. A new and easy-to-manufacture guide-field assembly was developed. For this purpose, diagonally-split cylindrical surface electrodes are capacitively coupled to a core rod that is carrying the RF signal. Consequently, only low DC voltages are needed to create a gradually changing potential in the longitudinal direction. The RFQ and the acceleration electrodes are installed in a self-aligned structure.

AB - An advanced radio-frequency quadrupole (RFQ) ion cooler was developed for accelerator mass spectrometry to use element-selective laser photodetachment and ion-molecule reactions for isobar suppression. The system will be installed as a central part of the new Anion Laser Isobar Separator (ALIS) at the 6 MV AMS system of CologneAMS. The new RFQ design intends to solve the technical challenge of the deceleration and trapping of heavy molecular ion beams with high emittance. Therefore, an elliptical injection electrode was developed to slow down the ions far away from the central entrance aperture. A new and easy-to-manufacture guide-field assembly was developed. For this purpose, diagonally-split cylindrical surface electrodes are capacitively coupled to a core rod that is carrying the RF signal. Consequently, only low DC voltages are needed to create a gradually changing potential in the longitudinal direction. The RFQ and the acceleration electrodes are installed in a self-aligned structure.

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KW - AMS

KW - CologneAMS

KW - ILIAMS

KW - Ion beam cooler

KW - Ion-laser interaction

KW - Isobar suppression

KW - RFQ

KW - VERA

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JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

ER -

An advanced radio-frequency quadrupole ion cooler for accelerator mass spectrometry

Abstract

Austrian Fields of Science 2012

Keywords

Access to Document

Other files and links

RADIATE: Research And Development with Ion Beams – Advancing Technology in Europe

Cite this

An advanced radio-frequency quadrupole ion cooler for accelerator mass spectrometry

Abstract

Austrian Fields of Science 2012

Keywords

Access to Document

Other files and links

Projects

RADIATE: Research And Development with Ion Beams – Advancing Technology in Europe

Cite this