F. Azaiez

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The European Collaboration for Stable Ion Beams
ECOS Pushing the limits with high intensity
stable beams A typical bottom up initiative in
the field
F. Azaiez (IPN-Orsay)
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ECOS European COllaboration for Stable (ion
beams)
Marie-Helene Moscatello / M. Levitowicz
(GANIL) Annamaria Porcellato (LNL) Uli
Ratzinger (GSI) S.
Brandenburg (KVI) , S. Gammino (LNS)
Sigurd Hofmann (GSI) Rauno Julin
(JYFL) Faisal Azaiez
(IPN-Orsay) Jacomo Deangelis (Legnaro) Rolf-Dietma
r Herzberg (Liverpool)
Task Produce a document to NUPECC with
--The Science with high intensity stable ion
beams, Beam intensity limitations and technical
developments for various types of research lines

--Status and future developments of
existing facilities/ New facility -- Conclusions
and Recommendations
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Some of the key questions in the nuclear
structure field are and will remain for the
coming 10 years well/better addressed using the
state of the art detection systems and higher
intensity stable beams!
     What is the influence of increasing charge
on the nuclear dynamics and structure?
What is the maximum number of protons that a
nucleus can sustain? What are the
properties of neutron-deficient nuclei?
Is there a new pairing phase based on T0
neutron-proton pairs? How does shell
structure melt with increasing temperature?
How does chaos emerge from order? What
are the new symmetries and excitation modes at
high angular momentum?
Are there any new components of the weak
interaction between nucleons?
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Recommendations (the part related to existing TNA
and relevant to the LoI)
The recommendation of the committee is to ensure
a strong support to stable ion beam facilities
in Europe not only for their accelerator system
development but also for the instrumentation and
experimental infrastructure that are needed to
host dedicated research programs.

• The proposed ECOS-NA is aiming at optimizing
  resources and manpower for
• the maintenance and development of various stable
  ions beam facilities in Europe
• with the following objectives
• - Organize the exchange of expertise and
  experience in ion sources and accelerator
  technologies.
• - Organize common design and infrastructure
  studies between facilities that are aiming for
  the
• use of common detection systems (gamma
  arrays, neutron and charged particle arrays,
  etc)
• - Organize technicians, Post-Doc and Student
  exchange in order to transfer expertise.
• - Organize a forum for discussions on research
  programs in order to optimize the use of the
• stable ion beam facilities in Europe.

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Recommendations (the part related to existing TNA
and relevant to the LoI)
--Increasing beam intensities to 100pnA at LNL
and JYFL is a tremendous increase of the
research potential in Europe. --The upgrade of
the UNILAC (GSI) and the operation of LINAG
(GANIL) (the 100pmA intensity regime), will
address the most challenging physics programs
related to SHE, proton rich nuclei
,.... --Beside the RNB projects, the nuclear
structure and the nuclear astrophysics
communities need new dedicated high intensity
stable ions facilities
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Recommendations (the part related to existing TNA
and relevant to the LoI)
In order to improve the existing facilities
(TNAs) and to be ready for this new project it
is also highly important that RD on the various
related keys issues initiated and organised at
the European level (in synergy
with future RNB projects)
1. Development of High current ion sources 2.
Development of high power thin targets 3.
Improvement of the ion-optical properties of the
separator with respect to high transmission and
reduced background. 3. Increase of the detector
granularity and installation of an appropriate
signal processing and data acquisition system.
This is the aim of the ECOS-JRA
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ECOS-NAJRA
List of Participants Bulgaria Univ. Sofia,
INRNE Sofia Finland Univ. Jyväskylä France
IN2P3, CEA, GANIL Germany GSI
Darmstadt Greece NCSR
Demokritos Hungary ATOMKI Debrecen Italy
INFN Legnaro, INFN Padova, INFN catania, INFN
Milano Netherlands KVI Groningen Poland
IFJ PAN Krakow and HIL UW Warsaw Romania
NIPNE Bucharest Sweden Lund Univ., Royal
Institute of Technology Stockholm, Uppsala
University Turkey Istanbul Univ., Nigde
Univ. UK Univ. Brighton, STFC
Daresbury, Univ. Liverpool, Univ. Manchester,
Univ. Paisley, Univ. Surrey, Univ. York
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