Münster 2011 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 21: Instrumentierung V
HK 21.6: Vortrag
Dienstag, 22. März 2011, 15:30–15:45, HS2
A multiple-reflection time-of-flight isobar separator for TITAN at TRIUMF and other ISOL-facilities — •Christian Jesch1, Timo Dickel1,2, Wolfgang Plaß1,2, Jens Ebert1, Hans Geissel1,2, Johannes Lang1, Moritz Pascal Reiter1, Christoph Scheidenberger1,2, and Mikhail I. Yavor3 — 1Justus-Liebig-Universität Gießen — 2GSI, Darmstadt — 3Inst. for Analytical Instrum., Russian Academy of Sci., St. Petersburg
The production of radioactive ion beams via the ISOL method has the advantage of a high yield of the desired radioisotope. The usually even higher production yields of contaminants is a drawback for ISOL and calls for efficient separation methods. The commonly used magnetic separators with mass resolving power of a few 103 allow the separation of contaminants with a mass difference ≥ 1 amu but no preparation of an isobarically clean beam.
TRIUMF’s Ion Trap for Atomic and Nuclear science is a facility for mass measurements, laser spectroscopy and nuclear branching ratio measurements in Vancouver, Canada. TITAN’s performance strongly benefits from isobarically clean beams by means of unambiguity and higher efficiency.
In order to significantly extend TITAN’s capabilities, a specialized multiple-reflection time-of-flight mass spectrometer has been developed in order to provide an efficient, fast (≈ ms), high mass resolving power (≈ 105) and high capacity (> 106 s−1) separation of the radioactive nuclei. The separator concept, a novel RFQ-type switch yard concept and preliminary results will be presented.