Accelerated radioactive beams from REX-ISOLDE
Paper i proceeding, 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

Författare

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-Universität Mainz

G. Huber

Johannes Gutenberg-Universität Mainz

P. Schmidt

Johannes Gutenberg-Universität Mainz

A. N. Ostrowski

Johannes Gutenberg-Universität Mainz

R. von Hahn

Max Planck-institutet

R. Repnow

Max Planck-institutet

J. Fitting

Max Planck-institutet

M. Lauer

Max Planck-institutet

H. Scheit

Max Planck-institutet

D. Schwalm

Max Planck-institutet

H. Podlech

Johann Wolfgang Goethe Universität Frankfurt am Main

A. Schempp

Johann Wolfgang Goethe Universität Frankfurt am Main

U. Ratzinger

Johann Wolfgang Goethe Universität Frankfurt am Main

O. Forstner

European Organization for Nuclear Research

Fredrik Wenander

European Organization for Nuclear Research

J. Cederkall

European Organization for Nuclear Research

Thomas Nilsson

European Organization for Nuclear Research

Mats Lindroos

European Organization for Nuclear Research

H. O. U. Fynbo

European Organization for Nuclear Research

S. Franchoo

European Organization for Nuclear Research

U. C. Bergmann

European Organization for Nuclear Research

M. Oinonen

European Organization for Nuclear Research

J. Aysto

European Organization for Nuclear Research

P. Van den Bergh

KU Leuven

P. Van Duppen

KU Leuven

M. Huyse

KU Leuven

N. Warr

Universität zu Köln

D. Weisshaar

Universität zu Köln

J. Eberth

Universität zu Köln

Björn Jonson

Chalmers, Institutionen för experimentell fysik, Subatomär fysik

Göran Hugo Nyman

Chalmers, Institutionen för experimentell fysik, Subatomär fysik

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 20-30

Ämneskategorier

Subatomär fysik

Övrig annan teknik

DOI

10.1016/S0168-583X(02)01886-4