European Isotope Separation On-LineRadioactive Nuclear Beam Facility

A preliminary design study of the next-generation European ISOL RNB facility

• GANIL, Caen, France

• Chalmers Univ. Techn., Göteborg, Sweden

• KULeuven, Leuven, Belgium

• GSI, Darmstadt, Germany

• INFN, Italy

• IPN, Orsay, France

• CEAN/DAPNIA, Saclay, France

• ISOLDE/CERN, Genève, Switzerland

• Accelerator Lab., Jyväskylä, Finland

• RAL, Chilton Didcot, United KingdomJanuary 1, 2000 – December 31, 2003

1.5 M€

http://www.ganil.fr/eurisol/index.html

• RTD on crucial problems 2002 – 2006

• detailed design, construction 2007 – 2010

European Isotope Separation On-LineRadioactive Nuclear Beam Facility

• key experiments : mostly neutron-rich fission proton-rich also spallation

• driver : proton 1 GeV 5 mA 5 MW DCother particles A/q = 2electrons

• target-ion source : neutron productionfission ( 1015 f/s)direct use ( 100 µA)

• post-accelerator : mass selection low energy (“à la ISOLDE”)

medium energy (10 MeV/A) high energy (100 MeV/A up to A = 132)

• instrumentation : cf. key experiments

General options (Steering Committee)

Town Meetings Orsay, Nov. 6-7, 2000

Abano Terme, Jan. 24-25, 2002

European Isotope Separation On-LineRadioactive Nuclear Beam Facility

1. key experiments Bjorn Jonsson

2. driver accelerator Alex Mueller

3. targets and ion sources Helge Ravn

4. mass-selection system and postacceleratorMarie-Hélène Moscatello

5. instrumentation Juha Aystö

6. cost estimates task group leaders +

7. Final report John Cornell + Jean Vervier

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RTDs’ on crucial technical points

synergies with other major European programmes existing installations

site independant

Tasks

The Working Group recognises the importance of radioactive nuclear beam facilities for a broad programme of research in fundamental nuclear physics and astrophysics, as well as applications of nuclear science. A new generation of high-intensity RNB facilities of each of the two basic types, ISOL and In-Flight, should be built on a regional basis.

European Isotope Separation On-LineRadioactive Nuclear Beam Facility

Key experiments(Bjorn Jonson)

• nuclear structure far from stabilityproton and neutron drip linesradioactive decays far from stabilitychanges in the shell structurehalo nucleiheavy and superheavy nuclei

• nuclear reactions with RNBs’one-,two, multiple-nucleon transfers

• high-spin physics with RNBs’

• nuclear Equation Of State for different isospins

• nuclear astrophysics

• tests of the Standard Model and of fundamental conservation laws

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Fragmentation of very intense (~ 1011 pps) neutron-rich RNBs’

EPAX 2ABRABLA GSICOFRA

European Isotope Separation On-LineRadioactive Nuclear Beam Facility

Driver accelerator(cf. Alex Mueller)

• 1 GeV, 5 mA, 5 MW superconducting proton linac

• RTDs’

• synergies (ESS, TNW, factory …)

• acceleration of heavy ions with A/q = 2

• electron linac

European Isotope Separation On-LineRadioactive Nuclear Beam Facility

Target-ion source assembly(cf. Helge Ravn, Ulli Koester)

• neutron production

• neutron producing target for MW beam powers

• fission target

• delays in diffusion, effusion

• intensity limitations in a gas cell

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CHARGE BREEDING 1+ - n+

TARGISOL release properties

IONCATCHER slowing down of RNBs’stopping and extraction in agas cell

European Isotope Separation On-LineRadioactive Nuclear Beam Facility

Mass-selection system and postaccelerator

(Eric Baron, Marie-Hélène Moscatello)

• mass-separator at low energy based on time-of-flight

• cyclotronstwo room-temperature cyclotronssuperconducting compact cyclotronsuperconducting separated-sector

cyclotron

• superconducting linacSC cavitiesindependently phasedmultiple charge acceleration

• cost / % of transmission

European Isotope Separation On-LineRadioactive Nuclear Beam Facility

Instrumentation(Juha Aystö)

• ground-state propertiesmasses, moments, matter and charge radii,fundamental interactions and symmetries

• nuclear structure studiesin-beam , e-, -delayed neutrons, tagging

• -ray tracking technique : Advanced GAmma Tracking Array

• charged particles and neutronsGamma Ray And Particle ArrayFour A and Z Identification Arrayneutrons, fission fragments, targets,electronics

• ions and charged-particle spectrometersgas-filled, recoil-mass, ray-tracing

• muonic and antiprotonic radioactive atoms

• electronics and data-acquisition

European Isotope Separation On-LineRadioactive Nuclear Beam Facility

Perspective

• Cost estimates

• Synergies

• Design Study

• Task Group reports

• Final report

European Isotope Separation On-LineRadioactive Nuclear Beam Facility