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Nuclear physics studies in CEA DAM DIF

(Formerly known as CEA Bruyères-le-châtel)

E. BaugeCEA DAM DIF

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Nuclear physics in CEA DAM DIF in numbers

Web site: http://www-phynu.cea.fr

Formal collaboration agreements with: CEA-DSM, CEA-DEN, NNSA, IRMM Geel. Active participation in several FP 5, 6, 7 EU programs (ANDES, ERINDA FP7)

Two missions :- Support the DAM Simulation program for all nuclear physics problems.- Be at the forefront of low energy nuclear physics.

Four big exp. projects: SPIRAL-2 radioactive beam facility in GANIL (2015) NFS neutron source at SPIRAL-2 (2012) SOFIA at GSI (2012), FELISe at FAIR (2017+) Laser Mega Joule (2014)

44 physicists & technicians (+ graduate students, post-docs, visitors, …)40 publications in peer-reviewed journals in 2010

Theoretical and experimental expertise interacting in one place

Five broad interacting research themes being developed:-Fission-Nuclear many-body theory-Nuclear isomers and nuclear physics with lasers & plasmas-Nuclear data -Experimental installations

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Interacting reseach programs at CEA DAM DIF

Exp.Installations

IsomersPlasmas

Fission

NuclearData

Theory

Experiment

Many- body

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Theoretical Nuclear Structure

Ab initio calculations based on the highly successful Gogny effective interactions, coupled with mean-field and beyond the mean-field treatment of the many body problem Methods: Hartree-Fock-Bogoliubov (Quasi-particle) Random Phase Approximation Multi-particle multi-hole configuration mixing Generator Coordinate Method Time-dependent dynamical approaches

Fields of Application:

Nuclear structure properties:

- spectroscopy of exotic nuclei

- systematic calculations

Microscopic fission studies

Structure ingredients for reaction models

Calculated ground state deformations

226Th scission configuration

QRPA 238U 3-

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Nuclear reaction theory & evaluation

Vast array of nuclear reaction models for: - direct-interaction (optical models, CDCC ) - pre-equilibrium, - compound nucleus decay, - fission & prompt neutron spectra, - high energy intra-nuclear cascade, - covariances,used to integrate theoretical and experimental knowledge into validated evaluated nuclear data.

Increasing role of microscopic models (previous slide)

One code platform : TALYS (http://www.talys.eu) in collaboration with NRG Petten

Evaluated 232Th(n,f) cross sections

89Y(n,2n) covariance matrix

Fields of application:Evaluated nuclear data for the DAM Simulation ProgramEvaluated nuclear data for the European JEFF fileTheoretical support for experimentalists (surrogate methods,…)

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Experimental nuclear data

CARMEN neutron counter

Detectors:Very high efficiency CARMEN neutron counterMulti-layers fission chambers3He neutron counterLead Slowing Down Spectrometer (in LANL)SOFIA (2012)-> FELISE (2017+) (GSI Darmstadt)

Fields of application:Fission measurements (cross sections, ratio, neutron spectra, fragment yields)(n,xn) & pre-equilibrium experimental studies Experimental support for the DAM simulation program

Prompt fission neutron mean energy as a function of incident neutron energy measured at LANSCE.

n(238U,f)n

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Nuclear isomers andNuclear physics with lasers & plasmas

Fields of application :Experimental spectroscopy of excited states in exotic nuclei & fission fragmentsMechanisms for populating/depopulating isomersAtomic/nuclear physics coupling in plasmasNuclear physics with lasers

Predicted lifetime of 201Hgm as a function of Tg- factor measurement of 61Fem

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On-site facility : 4 MV Van de Graaff accelerator

Fields of application :Cross sections measurements (n,p,d,t,3He,,…)Detector development and testing before deployment in off-site facilitiesCharacterization of thin deposits with microprobe

1H, 2H,3He, 4He & heavy ions beams Continuous intensity ~ 300 APulsed operation for TOF measurements 10 ns resolution (1ns with compression)Neutron production targets (D, T, 7Li)

+ELSA electron Linac (photofission)+ Project of revival of the old 7 MeV TANDEM in CEA DIF

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Off site installations

SPIRAL2, Phase 1 : NFS (2012)

LANSCE WNR

Laser Mega Joule (2014) SOFIA Exp. at GSI SuperFRS(2012) then FELISE (2017+) GANIL, SPIRAL2 (2014) with CHYMENE

+ CERN +RIKEN +Orsay Tandem +CACAO,…

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On site facilities:TERA-100, GENCI and PRACE Supercomputers

•TERA-100 : N6 in Nov 2010 TOP 500 HPC list– 130000 cores, 1.05 Peta flops– Reserved for DAM

•GENCI/CCRT :– To be upgraded to TERA-100 level– Open for proposals from the French community

•PRACE/Curie (European) : – To be 1.5 x TERA-100– Open for proposals (first call 01/2011)– Ready before end of 2011

Make very ambitious theoretical calculations possible

QRPA 238U 3-

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Questions ?

Exp.Installations

IsomersPlasmas

Fission

NuclearData

Theory

Experiment

Many- body