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          Institute: MPI für Kernphysik     Collection: Nuclear Physics and Nuclear Probes     Display Documents

ID: 51042.0, MPI für Kernphysik / Nuclear Physics and Nuclear Probes
Accelerated radioactive beams from REX-ISOLDE
Authors:Kester, O.; Sieber, T.; Emhofer, S.; Ames, F.; Reisinger, K.; Reiter, P.; Thirolf, P. G.; Lutter, R.; Habs, D.; Wolf, B. H.; Huber, G.; Schmidt, P.; Ostrowski, A. N.; von Hahn, R.; Repnow, R.; Fitting, J.; Lauer, M.; Scheit, H.; Schwalm, D.; Podlech, H.; Schempp, A.; Ratzinger, U.; Forstner, O.; Wenander, F.; Cederkäll, J.; Nilsson, T.; Lindroos, M.; Fynbo, H.; Franchoo, S.; Bergmann, U.; Oinonen, M.; Äystö, J.; Van Den Bergh, P.; Van Duppen, P.; Huyse, M.; Warr, N.; Weisshaar, D.; Eberth, J.; Jonson, B.; Nyman, G.; Pantea, M.; Simon, H.; Shrieder, G.; Richter, A.; Tengblad, O.; Davinson, T.; Woods, P. J.; Bollen, G.; Weissmann, L.; Liljeby, L.; Rensfelt, K. G.
Date of Publication (YYYY-MM-DD):2003
Title of Journal:Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Journal Abbrev.:Nucl. Inst. Meth. B
Start Page:20
End Page:30
Title of Issue:14th International Conference on Electromagnetic Isotope Separators and Techniques Related to their Applications
Copyright:© 2003 Elsevier Science B.V. All rights reserved.
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:In 2001 the linear accelerator of the Radioactive beam EXperiment (REX-ISOLDE) delivered for the first time accelerated radioactive ion beams, at a beam energy of 2 MeV/u. REX-ISOLDE uses the method of charge-state breeding, in order to enhance the charge state of the ions before injection into the LINAC. Radioactive singly-charged ions from the on-line mass separator ISOLDE are first accumulated in a Penning trap, then charge bred to an A/q<4.5 in an electron beam ion source (EBIS) and finally accelerated in a LINAC from 5 keV/u to energies between 0.8 and 2.2 MeV/u. Dedicated measurements with REXTRAP, the transfer line and the EBIS have been carried out in conjunction with the first commissioning of the accelerator. Thus the properties of the different elements could be determined for further optimization of the system. In two test beam times in 2001 stable and radioactive Na isotopes (23Na-26Na) have been accelerated and transmitted to a preliminary target station. There 58Ni- and 9Be- and 2H-targets have been used to study exited states via Coulomb excitation and neutron transfer reactions. One MINIBALL triple cluster detector was used together with a double sided silicon strip detector to detect scattered particles in coincidence with -rays. The aim was to study the operation of the detector under realistic conditions with -background from the -decay of the radioactive ions and from the cavities. Recently for efficient detection eight tripple Ge-detectors of MINIBALL and a double sided silicon strip detector have been installed. We will present the first results obtained in the commissioning experiments and will give an overview of realistic beam parameters for future experiments to be started in the spring 2002.
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group D. Schwalm/Acceleration and Storage Techniques (R. v. Hahn, R. Repnow, M. Grieser)
MPI für Kernphysik/Group D. Schwalm/Nuclear Gamma-Ray Spectroscopy (H. Scheit)
External Affiliations:Ludwig Maximilians Universität München and the MLL München, Am Coulombwall 1, D-85748 Garching, Germany
b Johannes-Gutenberg-Universität, D-55099 Mainz, Germany
c MPI für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany
d Johann Wolfgang Goethe-Universität Frankfurt, Robert-Mayer-Str. 2-4, D-60325 Frankfurt, Germany
e CERN, CH-1211 Geneva 23, Switzerland
f K.U. Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
g Institut für Kernphysik, Universität Köln, Zülpicher Str. 77, D-50937 Köln, Germany
h Chalmers University of Technology, Gothenburg, Sweden
i TU Darmstadt, Schlossgartenstr. 9, D-64289 Darmstadt, Germany
j CSIC, C/Serrano 121, E-28006 Madrid, Spain
k University of Edinburgh, GB-Edinburgh EH9 3JZ, Scotland, UK
l NSCL, Michigan State University, East Lansing, MI 48824, USA
m Manne Siegbahn Laboratory, Frescativägen 24, S-10405, Stockholm, Sweden
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