Improved beam diagnostics and optimization at ISAC via TITAN's MR-TOF-MS

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:463

Article; Proceedings Paper

Reiter, M. P.^1,2  Ames, F.²  Andreoiu, C.⁴  Andres, S. Ayet San^1,3  Babcock, C.²  Barquest, B. R.²  Bergmann, J.¹  Bollig, J.⁵  Brunner, T.^2,6  Dickel, T.^1,3  Dilling, J.^2,7  Dillmann, I.^2,11  Dunling, E.^2,8  Finlay, A.^2,7  Gwinner, G.⁹  Graham, L.²  Hornung, C.^1,3  Kootte, B.^2,9  Klawitter, R.¹⁰  Kunz, P.²  Lan, Y.^2,7  Lascar, D.^2,12  Lassen, J.²  Leistenschneider, E.^2,7  Li, R.²  McKay, J. E.²  Mostamand, M.^2,9  Paul, S. F.⁵  Plass, W. R.^1,3  Scheidenberger, C.^1,3  Schultz, B. E.²  Steinbrugge, R.²  Teigelhoefer, A.^2,9  Thompson, R.¹³  Wieser, M. E.¹³  Will, C.¹  Kwiatkowski, A. A.^2,11 

[1] Justus Liebig Univ, Phys Inst 2, D-35392 Giessen, Germany

[2] TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada

[3] GSI Helmholtzzentrum Schwerionenforsch GmbH, Planckstr 1, D-64291 Darmstadt, Germany

[4] Simon Fraser Univ, Dept Chem, Burnaby, BC V5A 1S6, Canada

[5] Heidelberg Univ, D-69117 Heidelberg, Germany

[6] McGill Univ, Phys Dept, Montreal, PQ H3A 2T8, Canada

[7] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

[8] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England

[9] Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada

[10] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[11] Univ Victoria, Dept Phys & Astron, Victoria, BC V8P 5C2, Canada

[12] Northwestern Univ, Ctr Fundamental Phys, Evanston, IL 60208 USA

[13] Univ Calgary, Dept Phys & Astron, Calgary, AB T2N 1N4, Canada

关键词: Low-energy RIB;    Isotopic separation on line;    Beam purification and optimization;    MR-TOF-MS;   

DOI  :  10.1016/j.nimb.2019.04.034

来源: Elsevier

【 摘 要 】

Determination of the constituents of the radioactive ion beam (RIB) is crucial for successful experiments at low-energy RIB facilities and as such decides the fate of many experiments. Here we present the role of TITAN's Multiple-Reflection Time-Of-Flight Mass Separator (MR-TOF-MS) and how it complements the present capabilities at ISAC-TRIUMF for yield determinations and beam delivery. This non-scanning, broadband, high-resolution mass spectrometer allows for real-time identification and quantification of all species, ranging from radionuclides with half-lives as low as a few ms to stable isotopes and molecules. In this manner it can be efficiently used to optimize RIB delivery through the ISAC mass separator for rate of the species of interest or its ratio to contamination. We present an example of this optimization approach, where the purity of secondary beams of neutron-rich titanium was improved by more than one order of magnitude based on the diagnostics capabilities of the new MR-TOF-MS and thus, allowed for high-precision mass measurements at TITAN.

【 授权许可】

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