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A Novel Dedicated HVE 14C AMS System

  • M Klein (a1), N C Podaru (a1) and D J W Mous (a1)

Abstract

High Voltage Engineering Europa (HVE) has designed a vacuum-insulated tandem accelerator dedicated to radiocarbon (14C) analysis. A unique feature of the design is a magnetic charge state selector that is incorporated in the high voltage terminal, which reduces the primary source of background that originates from the injection of 13CH to negligible levels. As a result, background levels in the low 10−16 regimes are anticipated, thus supporting the most stringent 14C dating applications. Another feature of the system is the incorporation of several slit feedback loops for stabilization of the position of the ion beam throughout the system, which avoids drift and ensures stable, long-term operation. Finally, this article presents measurements and quantitative analysis of background contributions from 13CH.

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*Corresponding author. Email: info@highvolteng.com.

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Selected Papers from the 23rd International Radiocarbon Conference, Trondheim, Norway, 17–22 June, 2018

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References

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Arnold, M, Merchel, S, Bourlès, DL, Braucher, R, Benedetti, L, Finkel, RC, Aumaître, G, Gottdang, A, Klein, M. 2010. The French accelerator mass spectrometry facility ASTER: improved performance and developments. Nuclear Instruments and Methods in Physics Research B 268(11–12):19541959.
Klein, M, Mous, DJW, Gottdang, A. 2006. A compact 1 MV multi-element AMS system. Nuclear Instruments and Methods in Physics Research B 249:764767.
Klein, M, Gottdang, A, Mous, D. 2013. High-current 14C measurements on an HVE 1MV AMS system. Radiocarbon 55(2):224230.
Klein, M, Mous, DJW. 2017. Technical improvements and performance of the HVE AMS sputter ion source SO-110. Nuclear Instruments and Methods in Physics Research B 406:210213.
Maxeiner, S, Seiler, M, Suter, M, Synal, HA. 2015. Charge state distributions and charge exchange cross sections of carbon in helium at 30–258 keV. Nuclear Instruments and Methods in Physics Research B 361:541547.
Schulze-König, T, Seiler, M, Suter, M, Wacker, L, Synal, HA. 2011. The dissociation of 13CH and 12CH2 molecules in He and N2 at beam energies of 80–250 keV and possible implications for radiocarbon mass spectrometry. Nuclear Instruments and Methods in Physics Research B 269: 3439.
Seiler, M. 2014. Accelerator mass spectrometry for radiocarbon at very low energies [PhD thesis]. ETH Zurich.
Synal, HA, Stocker, M, Suter, M. 2007. MICADAS: a new compact radiocarbon AMS system. Nuclear Instruments and Methods in Physics Research B 259:713.

Keywords

A Novel Dedicated HVE 14C AMS System

  • M Klein (a1), N C Podaru (a1) and D J W Mous (a1)

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