EURISOL (Design study)
EURISOL Design Study (6th Framework Programme: Research Infrastructures Action) logo_tutelle 

Logo of the EURISOL DS (EURopean Isotope Separation On-Line Design Study)

Context of the experiment The EURISOL design study will produce detailed engineering-oriented studies and technical prototyping work for the next-generation ISOL Radioactive Ion Beam (RIB) facility in Europe. Such a world-class facility, complementary to the in-flight facility envisaged elsewhere in Europe, is expected to come into operation in the next decade. It will provide unique world-class research opportunities in nuclear physics, nuclear astrophysics and materials science, and will supply new radiopharmaceutical isotopes. The study will address the major technological problems which are expected to arise in the creation of a facility able to provide exotic ions in quantities which are orders of magnitude higher than those currently available anywhere else in the world. A feasibility study into the use of the EURISOL facility for the production of pure electron-neutrinos is an integral part of the design study; this is the so-called new “beta-beam” proposal. Synergies which exist between the proposed infrastructure and other European developments will be exploited to mutual advantage.

Localisation Project leader: G. Fortuna, INFN (Italy)
Coordinating Institute: GANIL (France)

Collaboration Twenty institutes and laboratories within Europe have offered to take part in the design study as full Participants, with an additional 20 institutions ¬– either in Europe, North America or Asia collaborating as Contributors. The participants are drawn from the major European institutions that lead research in Nuclear Physics and associated fields. In this Design Study they provide specific technological expertise on superconducting linear accelerators, high-power targetry, RIB production, ion sources and beam manipulation, radiation safety and instrumentation.

EU support From the total EU support of 9162 kEuros DAPNIA obtained 525kEuros.

A schematic view of the future EURISOL facility.

Scientific approach

The EURISOL DS will produce feasibility studies and perform technical preparatory work of the most critical parts of the future EURISOL facility. The main technical challenges and the necessary prototyping were identified during the EURISOL RTD in the 5th framework (FP5). This design study is part of the roadmap towards the EURISOL facility and cross-fertilization is expected between the design study and the design and construction of the so-called "mid-term" facilities. The conceptual design study for an associated beta-beam facility, which can benefit from the prototyping work concerning the RIB facility, is an integral part of the EURISOL DS.

Research means The schematic layout of the EURISOL facility, as proposed in the EURISOL RTD report is displayed in figure. The main parts are: the driver accelerator, production targets, post accelerator and experimental areas. The main goals of the DS will be to refine the design and demonstrate the feasibility of different parts, and to construct and test prototypes for the most technically challenging components and subsystems. In order to give a readily visible structure to the DS, the work proposed has been divided into 11 tasks related to scientific and technical issues, which have been grouped together in four topics: (i) Accelerators, (ii) Targets, (iii) Physics, Yields & Safety, and (iv) Beam Preparation & Beta-Beams.

Instruments Expertise of DAPNIA in a number of fields will be employed for the project:
* experimental nuclear physics and modelling
* detectors and electronics
* accelerator design and construction, cryogenic systems, beam control, etc.
* radiation safety, decommissioning of accelerators and nuclear reactors.

Spécificities The EURISOL 5th framework report has concluded that linear accelerators are the best option for both the driver and the post-accelerator. The driver should be optimized for the acceleration of (up to) 5 mA of 1 GeV protons, but heavy ion acceleration capability for A/q = 2 and possibly A/q = 3 should be considered. This accelerator will belong to the class called “High Power Proton Accelerators” (HPPA). No accelerator today is capable of such proton beam intensity in CW mode. Two R&D items were given maximum priority in the conclusions of the RTD report: construction of complete prototype accelerator cryomodule for low-β linac section and the development of prototypical spoke, quarter wave and re-entrant cavities with associated auxiliary RF components. The post-accelerator must accelerate heavy ions up to uranium at energies reaching 100 MeV/nucleon.


Schematic layout of the proposed beta-beam facility within EURISOL project.

Contribution of the Dapnia

scientific and technical responsabilities * Membership in the Steering Committee of EURISOL
* Membership in Coordination Board of EURISOL
* Coordination of Task 5 "Safety and Radioprotection"
* Participation and contribution in 6 working packages (out of 12):
Task 4 "Fission target"
Task 5 "Safety and Radioprotection"
Task 7 "Proton Accelerator Design"
Task 10 "Physics and Instrumentation"
Task 11 "Beam Intensity Calculations"
Task 12 "Beta Beams"


State and prospectives

Important moments 1 February 2005 - an official start of the project (for 4 years)
28-29 November 2005 - EURISOL DS Town Meeting, GANIL, Caen, France
15 February 2006 - deadline for the 1st Interim Annual Report
16-21 January 2006 - EURISOL physics and instrumentation workshop, ECT* Trento, Italy

State in the end of 2006 The project is progressing as planned.
Participation and contribution of DAPNIA is going according to agenda:

Tasks 4, 5 and 11:
benchmark calculations on neutron, charged particle and residual nuclei production with Monte Carlo codes are terminated. Final report is in progress.

Task 7: A set of rules to design a lattice providing acceleration of protons with minimum beam losses and minimum emittance increase was developped.

Task 12:
The main aspects on optics of the decay ring were the refinement of injection and merging parameters for the ion stacking. Several lattice variants with optimized injection sections were developed and detailed simulations for the bunch merging were performed. The beam input parameters for the decay ring have been established.

Perspectives The work will continue as planned during the 2nd year of the project.

Scientific balance sheet

 A number of contributions/presentations in workshops/conferences

Contact D. RIDIKAS

Last update : 07/16 2009 (877)

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