Charge breeding -charge breeding of intense radioactive beams

Información del proyecto

CHARGE BREEDING

Identificador del acuerdo de subvención: HPRI-CT-1999-50003

Proyecto cerrado

Fecha de inicio 1 Enero 2000

Fecha de finalización 31 Diciembre 2003

Financiado con arreglo a

• Programme for research, technological development and demonstration on "Improving the human research potential and the socio-economic knowledge base" (1998-2002)

Coste total

€ 1 856 285,00

Aportación de la UE

€ 1 200 000,00

Coordinado por

LUDWIG-MAXIMILIANS UNIVERSITY OF MUNICH
Germany

Objetivo

Description:

Objectives:The development of an efficient charge breeding scheme for Radioactive Ion Beam will have a strong impact on the post accelerators planned at European large scale facilities. At ISOLDE/CERN there will be the unique possibility to carry out experiments with the two possible charge breeding set-ups with a large variety of radioactive isotopes. One charge breeding set-up is the Penning trap-EBIS combination which feeds the REX-ISOLDE linear accelerator and which has bred radioactive ions for the first time to A/q < 4.5. Cooled and bunched beams of radioactive isotopes from REXTRAP have been injected into REXEBIS and the charge states have been analysed with the achromatic mass separator. The second charge breeder is the ECRIS PHOENIX developed at the ISN ion source laboratory at Grenoble.

This ECRIS is under investigation with a 14 GHz amplifier. Comparisons to measurements with the MINIMAFIOS source show higher efficiencies and shorter breeding times. The experiments are accompanied by theoretical studies with computer simulations. A second PHOENIX ECRIS is installed at the Daresbury Laboratory for charge breeding test measurements, which prepare the final set-up and experiments with radioactive ions at ISOLDE in 2002. The final goals are the comparison of breeding efficiencies and loss measurements with radioactive ions with simulation calculations and with results from the Penning trap-EBIS charge breeder.
Results:

Project Manager:
Dietrich Habs, Sektion Physik, Am Coulombwall 1, Garching 85748, Germany
Tel: [phone]
Fax: [phone]
E-Mail: [e-mail]
A new ECR ion source (PHOENIX) at ISN Grenoble has been developed and characterized on a test bench;
- A second PHOENIX ECRIS has been acquired and purchased by Daresbury Laboratory. There a test beam line for 1+ n+ operation with stable beams has been assembled and used for charge breeding experiments with stable beams;
- An ECRIS test beam line at ISOLDE for test measurements with radioactive ion beams;
- A complete evaluation of the properties and scaling laws of the first charge breeder using a Penning trap EBIS assembly, the REX-ISOLDE charge state breeder, has been performed;
- The direct comparison of the two charge breeding schemes using the ECRIS or the Penning trap-EBIS combination concerning breeding efficiency, maximum intensities, repetition rate and emittances has been performed;
- A characterization of existing low-charge ion sources to be used as injectors for charge breeders has been performed at CERN / ISOLDE;
- Development of ECRIS sources for low charged radioactive noble gas ions at GANIL and ISOLDE;
- Publications of data from the charge breeding systems concerning efficiencies, emittances, repetition rates, and achievable charge-to-mass-ratios on conferences and refereed journals. Publications of the concepts of efficient charge breeding and results in refereed journals;
- Technical mid term reports on the different phases of design and operation of the PHOENIX ECRIS and of the REXEBIS.

Ámbito científico (EuroSciVoc)

• ciencias naturales › ciencias químicas › química inorgánica › gases nobles
• ciencias naturales › ciencias físicas › física teórica › física de partículas › acelerador de partículas
• ciencias sociales › derecho
• ciencias naturales › matemáticas › matemáticas aplicadas › modelo matemático

Programa(s)

• FP5-HUMAN POTENTIAL - Programme for research, technological development and demonstration on "Improving the human research potential and the socio-economic knowledge base" (1998-2002)

Tema(s)

• 1.4.1.-2. - Access to Research Infrastructures

Convocatoria de propuestas

Datos no disponibles

Régimen de financiación

CSC - Cost-sharing contracts

Coordinador

LUDWIG-MAXIMILIANS UNIVERSITY OF MUNICH

• Aportación de la UE: Sin datos
• Dirección: Schellingstr. 4 ; 80799 MUENCHEN ; Alemania
• Coste total: Sin datos

Participantes (6)

CHALMERS UNIVERSITY OF TECHNOLOGY

Suecia

• Aportación de la UE: Sin datos
• Dirección: Fysikgränd 3 ; 412 96 GOETEBORG
• Coste total: Sin datos

COUNCIL FOR THE CENTRAL LABORATORY OF THE RESEARCH COUNCILS

Reino Unido

• Aportación de la UE: Sin datos
• Dirección: Chilton,Didcot ; OX11 0QX DIDCOT,HARWELL,CHILTON
• Coste total: Sin datos

GRAND ACCELERATEUR NATIONAL D'IONS LOURDS

Francia

• Aportación de la UE: Sin datos
• Coste total: Sin datos

ISTITUTO NAZIONALE DI FISICA NUCLEARE

Italia

• Aportación de la UE: Sin datos
• Dirección: Via Romea 4 ; 35020 LEGNARO
• Coste total: Sin datos

JOHANNES GUTENBERG UNIVERSITAET MAINZ

Alemania

• Aportación de la UE: Sin datos
• Dirección: 7,Staudingerweg 7 ; 55099 Mainz
• Coste total: Sin datos

UNIVERSITE JOSEPH FOURIER - GRENOBLE 1

Francia

• Aportación de la UE: Sin datos
• Dirección: Avenue des Martyrs 53 ; 38026 Grenoble
• Coste total: Sin datos