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1 Andreas Görgen EURISOL – EURONS Town Meeting, Helsinki, 17.-19.9.2007.

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Presentation on theme: "1 Andreas Görgen EURISOL – EURONS Town Meeting, Helsinki, 17.-19.9.2007."— Presentation transcript:

1 1 Andreas Görgen EURISOL – EURONS Town Meeting, Helsinki,

2 2 NEMO: Network on Nuclear Electromagnetic Moments Scientific scope / area of activity: Experimental measurements of electromagnetic moments in exotic nuclei using:  Coulomb excitation at low and intermediate energy with RIB,  measurement of static nuclear moments of isomeric and short-lived excited states,  lifetime measurements of short-lived states via Doppler-shift techniques. Scientific goals of the NEMO network :  adapt established stable-beam techniques to be used with RIB,  identify the necessary instrumentation and developments,  extend techniques to novel reaction mechanisms to populate excited states,  evaluate key experiments for future RIB facilities,  establish data analysis standards and develop data analysis tools,  train young researchers in the relevant analysis techniques. Relevance for the community:  form new collaborations as a result of the network activities,  coordinate actions to prepare a strong research program in the field,  exploit synergies between different experimental methods,  document achievements and make them available to researchers,  provide information about research opportunities in the field,  promote nuclear moments measurements to a wider community of researchers,  evaluate the applicability to other fields.

3 3 Andreas Görgen EURISOL – EURONS Town Meeting, Helsinki, Relevance for the Infrastructures and New Facilities  Electromagnetic moments are fundamental nuclear properties and the among the first quantities to be measured in exotic nuclei when they become accessible.  Electromagnetic observables provide the most sensitive testing ground for nuclear structure theory.  Their measurement represents a significant aspect in the scientific program of present and future RIB facilities (SPIRAL2, HIE-ISOLDE, FAIR) PRL Vol.94-98: 21 nuclear moment measurements out of 139 nuclear structure (15%), 298 nuclear physics (7%) letters. SPIRAL2 SAC recommendation on LoI “Nuclear Electromagnetic Moments”: “…The SAC considers these kind of studies of key interest at SPIRAL 2...”  Expertise exists in the community from stable-beam experiments, but it is dying out for certain methods and sub-fields.  Techniques had to be re-established for first-generation RIB experiments, often by individual groups and specific to a given facility. Need to combine experience from ISOLDE, SPIRAL, FRS, stable-beam labs… to build strong programs and make the best use of present and new accelerators.  The new RIB facilities bring about new challenges, while the complexity of the experiments is increasing needs a community effort in order to make the best use of the resources.  New techniques need to be tested. This is an important task for smaller facilities, e.g. university labs.

4 4 Andreas Görgen EURISOL – EURONS Town Meeting, Helsinki, Activities of the network  Organize regular workshops to bring together the experts in the field to exchange ideas conceive new equipment, techniques, test experiments,.... (not meant as small conferences to present scientific results)  Establish working groups for the identified tasks,  Prepare research proposals for existing facilities in newly formed collaborations,  Define the research program and key experiments for future facilities,  Organize hands-on data analysis workshops to train the next generation, e.g. on how to analyze multi-step Coulex experiments, lineshape analysis to determine lifetimes…  Organize exchange visits of specialists / students / technicians between institutions to spread highly specialized knowledge.  Networking was identified as a weak part in EURONS-1.  Post-docs would enable networks to achieve more ambitious goals.  To strengthen Network Activities in EURONS-2, we propose to endow networks with sufficient funds to hire post-docs.  This option should at least be discussed in the steering committee.  I3HP has chosen to do so – and has strong, successful networks.

5 5 Andreas Görgen EURISOL – EURONS Town Meeting, Helsinki, Participating Institutions (and contact persons) Area of Expertise, envisaged contribution  NCSR Demokritos, Athens (S. Harissopulos) Lifetime measurements, construction of Plunger for REX / Miniball  CEA/DIF Bruyères-le-Châtel (J.-M. Daugas) static nuclear moments of isomers, adapt techniques for high-intensity RIB (SPIRAL2)  NIPNE Bucharest (V. Zamfir, D. Bucurescu, M. Ionescu-Bujor) static moments and lifetimes, g-factor and quadrupole moments at DESPEC, development of Plunger for HISPEC  University Politehnica Bucharest (G. Cata-Danil)  ILL Grenoble (U. Köster) static moments of isomers, test experiments with LOHENGRIN, optimization of polarization techniques  University of Jyväskylä (R. Julin) Lifetime measurements in tagging experiments  Universität Köln (A. Dewald) construction of Plunger devices for various facilities, extension of RDDS technique to fast beams and DIC  INFN Legnaro (G. de Angelis, A. Gadea) lifetime measurements after DIC  KU Leuven (P. Van Duppen, M. Huyse, G. Neyens) static nuclear moments and coulex  University of Liverpool (P. Butler) Coulex, instrumentation and techniques for ISOLDE  TU München (R. Krücken) Coulex, instrumentation and techniques for HISPEC / DESPEC and ISOLDE  CSNSM Orsay (G. Georgiev) static nuclear moments, adapt techniques for high- intensity RIB and new reaction mechanisms, coordination  University of Padova and INFN (F. Brandolini, P. Pavan, C.A. Ur) RDDS and DSAM lifetime measurements, instrumentation for high-intensity stable beams  Weizmann Institut, Rehovot (M. Hass) static nuclear moments  CEA/DAPNIA Saclay (A. Görgen) Coulex and lifetime measurements, instrumentation and techniques for GANIL / SPIRAL2, coordination  INRNE Sofia (D. Balabanski, P. Petkov, D. Tonev) static moments, lifetime measurements instrumentation and methods for HISPEC/DESPEC  University of Warsaw, HIL (P. Napiorkowski, J. Srebrny) Coulex and lifetime measurements, development of analysis tools, test experiments at Warsaw cyclotron  University of York (C. Barton) Coulex, development of Bragg detector for ISOLDE


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