Perspectives of Nuclear Physics in Europe - European Science ...

3. Research Infrastructures and Networking
n-rich nuclei otherwise inaccessible. A block diagram
of the future EURISOL facility is shown below.
EURISOL will open up new vistas for radioactive
beam research. Nuclear structure at and beyond the
drip-lines, the detailed study of new types of radioactivity,
the isospin dependence of nuclear phase transitions,
the mapping of the r-process path, the physics of neutron
stars and precision tests of the standard model are
just a few of the subjects for which EURISOL will bring
decisive advances. The Nuclear Physics community has
endorsed EURISOL as one of the major facilities capable
of sustaining the long-term future of the field.
The next stage of the EURISOL road map includes the
construction and exploitation of the network of facilities
comprising HIE-ISOLDE, SPES and SPIRAL2. It is vital
that all three of these installations, which will bring major
advances to radioactive beam science as well as demonstrate
many of the technical solutions for EURISOL,
receive adequate support to ensure their timely completion.
Opportunities to upgrade these facilities; for
example by replacing the SPIRAL2 post accelerator at
GANIL by a powerful LINAC or promoting a high intensity
solution for the replacement of the CERN injector chain
should be investigated and pursued. Such developments
would position CERN and GANIL as frontrunners
in the competition to host the facility for which they were
identified during the DS as favourable sites along with
LNL Legnaro and Rutherford Laboratory in the UK.
Simultaneously, it is necessary in the next few years to
continue to fund a specific R&D programme for a few of
the main technical challenges for EURISOL. Beam tests
of a Hg loop converter, prototyping of an ARC-Ecris
source and of a magnetic beam splitting system have
been identified as being on the critical path towards the
realisation of the facility. Maintaining a Project Office is
important to ensure a continuous and coherent effort.
EURISOL is the Nuclear Physics community’s priority
for accession to the ESFRI list, at the time of its next
update scheduled in 2012.
ENC at FAIR, Darmstadt, Germany
The main problem of hadron physics is to understand
the nucleon in terms of elementary degrees of freedom
– quarks and gluons – and their underlying non-abelian
gauge theory of QCD. This problem is of utmost importance
to the whole of contemporary physics, since on the
one hand it paves the road to an ab initio understanding
of even more complex strongly interacting systems such
as nuclei, while on the other hand, it pushes forward the
precision frontier in high-energy physics, where analyses
in many cases are limited by the hadron physics input.
Lepton/Nucleon colliders are considered as a decisive
tool for future hadron structure physics experiments.
Such machines have to provide polarised beams of
both particle species, with high luminosity at centre of
mass energies that match or exceed those of fixed target
installations like JLab or HERMES.
The challenge of understanding the structure of
ground and excited state hadrons can be expressed as
the need of predicting hadronic properties and processes
with good and controlled precision. The interaction
of a polarised beam of charged leptons with a beam of
polarised protons and deuterons is dominated by photon
exchange at momentum transfer values well below the
mass of the W intermediate boson M W 2 .
The scientific goals of the ENC comprise the precise
determination of the spin flavour structure of the nucleon
consisting of quarks and gluons. The quark structure is
Kinematical acceptance of the ENC as compared to other
experiments.
Layout of ENC@FAIR.
50 | Perspectives of Nuclear Physics in Europe – NuPECC Long Range Plan 2010