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  On-line implementation and first operation of the Laser Ion Source and Trap at ISOLDE/CERN

Fink, D., Richter, S., Blaum, K., Catherall, R., Crepieux, B., Fedosseev, V., et al. (2014). On-line implementation and first operation of the Laser Ion Source and Trap at ISOLDE/CERN. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 344, 83-95. doi:10.1016/j.nimb.2014.12.007.

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 Urheber:
Fink, Daniel1, 2, 3, Autor           
Richter, S.D.4, Autor
Blaum, Klaus2, Autor           
Catherall, R.1, Autor
Crepieux, B.1, Autor
Fedosseev, V.N.1, Autor
Gottberg, A.1, 5, Autor
Kron, T.4, Autor
Marsh, B.A.1, Autor
Mattolat, C.4, Autor
Raeder, S.4, Autor
Rossel, R.E.1, 4, 6, Autor
Rothe, S.1, 4, Autor
Schwellnus, F.4, Autor
Seliverstov, M.D.1, 7, 8, 9, 10, Autor
Sjödin, M.1, Autor
Stora, T.1, Autor
Suominen, P.1, Autor
Wendt, K.D.A.4, Autor
Affiliations:
1CERN, 1211 Geneva 23, Switzerland, ou_persistent22              
2Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society, ou_904548              
3Fakultät für Physik und Astronomie, Ruprecht-Karls-Universität, 69120 Heidelberg, Germany, ou_persistent22              
4Institut für Physik, Johannes Gutenberg-Universität, 55099 Mainz, Germany, ou_persistent22              
5Instituto de Estructura de la Materia, CSIC, 28006 Madrid, Spain, ou_persistent22              
6Faculty of Design, Computer Science and Media, Hochschule RheinMain, 65197 Wiesbaden, Germany, ou_persistent22              
7Petersburg Nuclear Physics Institute, NRC Kurchatov Institute, 188300 Gatchina, Russia, ou_persistent22              
8School of Engineering and Science, University of the West of Scotland, Paisley PA1 2BE, United Kingdom, ou_persistent22              
9Department of Physics, The University of York, York YO10 5DD, United Kingdom, ou_persistent22              
10Scottish Universities Physics Alliance (SUPA), United Kingdom, ou_persistent22              

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 MPINP: Speichertechnik - Abteilung Blaum
 Zusammenfassung: At radioactive ion beam facilities like ISOLDE at CERN, a high purity of the element of interest in the ion beam is essential for most experiments on exotic nuclei. Due to its unique combination of high ionization efficiency and ultimate elemental selectivity, the Resonance Ionization Laser Ion Source, RILIS, has become the most frequently used ion source at ISOLDE and at the majority of similar facilities worldwide. However, isobaric contamination predominantly stemming from unspecific surface ionization may still introduce severe limitations. By applying the highly selective resonance ionization technique inside a radio-frequency quadrupole ion guide structure, the novel approach of the Laser Ion Source and Trap, LIST, suppresses surface ionized isobaric contaminants by an electrostatic repelling potential. Following extensive feasibility studies and off-line tests, the LIST device has been adapted and refined to match the stringent operational constraints and to survive the hostile environment of the ISOLDE front-end region enclosing the highly radioactive nuclear reaction target. The LIST operation was successfully demonstrated for the first time on-line at ISOLDE during two experiments, attesting its suitability for radioactive isotope production under routine conditions. Data of these on-line characterization measurements confirm a suppression of surface-ionized isobars by more than a factor of 1000 in accordance to off-line studies that were carried out for the preparation of the on-line experiments. During the first on-line test, the suppression was associated with an efficiency loss of not more than a factor of about 50 with respect to normal RILIS operation. These losses could be further reduced to only about 20 during the second run. Results of the off-line studies in comparison to the first on-line characterization data are discussed here.

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Sprache(n): eng - English
 Datum: 2014-12-27
 Publikationsstatus: Online veröffentlicht
 Seiten: 13
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1016/j.nimb.2014.12.007
 Art des Abschluß: -

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Titel: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
  Kurztitel : NIM B
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Amsterdam : Elsevier B.V.
Seiten: - Band / Heft: 344 Artikelnummer: - Start- / Endseite: 83 - 95 Identifikator: ISSN: 0168-583X
CoNE: https://pure.mpg.de/cone/journals/resource/954925484704