Accelerated radioactive beams from REX-ISOLDE
Paper in proceedings, 2003
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 (Na-23-Na-26) have been accelerated and transmitted to a preliminary target station. There Ni-58- and Be-9- and H-2-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 gamma-rays. The aim was to study the operation of the detector under realistic conditions with gamma-background from the beta-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.
RIB facilities
ion
IONS
charge breeding
PENNING TRAP
REXTRAP
sources
radioactive beams
Penning trap
linear accelerator
beam transport
NONNEUTRAL PLASMAS
Author
O. Kester
Ludwig-Maximilians-Universität München
T. Sieber
Ludwig-Maximilians-Universität München
S. Emhofer
Ludwig-Maximilians-Universität München
F. Ames
Ludwig-Maximilians-Universität München
K. Reisinger
Ludwig-Maximilians-Universität München
P. Reiter
Ludwig-Maximilians-Universität München
P. G. Thirolf
Ludwig-Maximilians-Universität München
R. Lutter
Ludwig-Maximilians-Universität München
D. Habs
Ludwig-Maximilians-Universität München
B. H. Wolf
Johannes Gutenberg University Mainz
G. Huber
Johannes Gutenberg University Mainz
P. Schmidt
Johannes Gutenberg University Mainz
A. N. Ostrowski
Johannes Gutenberg University Mainz
R. von Hahn
Max Planck Society
R. Repnow
Max Planck Society
J. Fitting
Max Planck Society
M. Lauer
Max Planck Society
H. Scheit
Max Planck Society
D. Schwalm
Max Planck Society
H. Podlech
Goethe University Frankfurt
A. Schempp
Goethe University Frankfurt
U. Ratzinger
Goethe University Frankfurt
O. Forstner
European Organization for Nuclear Research (CERN)
Fredrik Wenander
European Organization for Nuclear Research (CERN)
J. Cederkall
European Organization for Nuclear Research (CERN)
Thomas Nilsson
European Organization for Nuclear Research (CERN)
Mats Lindroos
European Organization for Nuclear Research (CERN)
H. O. U. Fynbo
European Organization for Nuclear Research (CERN)
S. Franchoo
European Organization for Nuclear Research (CERN)
U. C. Bergmann
European Organization for Nuclear Research (CERN)
M. Oinonen
European Organization for Nuclear Research (CERN)
J. Aysto
European Organization for Nuclear Research (CERN)
P. Van den Bergh
KU Leuven
P. Van Duppen
KU Leuven
M. Huyse
KU Leuven
N. Warr
University of Cologne
D. Weisshaar
University of Cologne
J. Eberth
University of Cologne
Björn Jonson
Chalmers, Department of Experimental Physics, Subatomic Physics
Göran Hugo Nyman
Chalmers, Department of Experimental Physics, Subatomic Physics
M. Pantea
Technische Universität Darmstadt
H. Simon
Technische Universität Darmstadt
G. Shrieder
Technische Universität Darmstadt
A. Richter
Technische Universität Darmstadt
Olof Tengblad
Agencia Estatal Consejo Superior de Investigaciones Científicas (CSIC)
T. Davinson
University of Edinburgh
P. J. Woods
University of Edinburgh
G. Bollen
Michigan State University
L. Weissmann
Michigan State University
L. Liljeby
Manne Siegbahn Laboratory
K. G. Rensfelt
Manne Siegbahn Laboratory
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
0168-583X (ISSN)
Vol. 204 20-30Subject Categories
Subatomic Physics
Other Engineering and Technologies not elsewhere specified
DOI
10.1016/S0168-583X(02)01886-4