Partenaires

Nos tutelles

Centre National de la Recherche Scientifique Université de Caen ENSICAEN Normandie Université

LPC CAEN
ENSICAEN
6, bd du Maréchal Juin
14050 CAEN Cedex
Tel : +033 (0) 231452500



Annuaire


Organigrammes


Contacts

Rechercher





Accueil > Recherche & Enseignement

M. Jean-Luc Lecouey

Maître de conférences ENSICAEN

Groupe : Aval du cycle électronucléaire

lecouey lpccaen.in2p3.fr

Tel : +33 2 31 45 29 65


PUBLICATIONS

[in2p3-01274914] Monte Carlo MSM correction factors for control rod worth estimates in subcritical and near-critical fast neutron reactors

16 février 2016

The GUINEVERE project was launched in 2006, within the 6th Euratom Framework Program IP-EUROTRANS, in order to study the feasibility of transmutation in Accelerator Driven subcritical Systems (ADS). This zero-power facility hosted at the SCK·CEN site in Mol (Belgium) couples the fast subcritical (...)

Lire la suite

[in2p3-01177675] Estimate of the reactivity of the VENUS-F subcritical configuration using a Monte Carlo MSM method

20 juillet 2015

The GUINEVERE project was launched in 2006 in order to study the feasibility of transmutation in Accelerator Driven subcritical Systems (ADS). This facility, hosted at the Belgian Nuclear Research Center SCK·CEN, couples the fast subcritical lead reactor VENUS-F with an external neutron source (...)

Lire la suite

Structure of 13Be probed via secondary-beam reactions

27 mars 2014

The low-lying level structure of the unbound neutron-rich nucleus 13Be has been investigated via breakup on a carbon target of secondary beams of 14,15B at 35 MeV/nucleon. The coincident detection of the beam velocity 12Be fragments and neutrons permitted the invariant mass of the 12Be+n and (...)

Lire la suite

[in2p3-00920222] Structure of $^{13}$Be probed via secondary beam reactions

18 décembre 2013

The low-lying level structure of the unbound neutron-rich nucleus $^13$Be has been investigated via breakup on a carbon target of secondary beams of $^14,15$B at 35 MeV/nucleon. The coincident detection of the beam velocity $^12$Be fragments and neutrons permitted the invariant mass of the (...)

Lire la suite

Reactivity monitoring using the area method for the subcritical VENUS-F core within the framework of the FREYA Project

3 juin 2013

Accelerator-Driven Systems (ADS) could be employed to incinerate minor actinides and so partly contribute to answer the problem of nuclear waste management. An ADS consists of the coupling of a subcritical fast reactor to a particle accelerator via a heavy material spallation target. The (...)

Lire la suite

The Neutrons For Science facility at SPIRAL-2

6 mars 2013

The "Neutrons For Science" (NFS) facility will be a component of SPIRAL-2 laboratory under construction at Caen (France). The SPIRAL-2 facility will be dedicated to the production of high intensity of Radioactive Ions Beams (RIB). The high-power, superconducting driver LINAG (linear accelerator (...)

Lire la suite

Evidence Of A (1)2 Component To The 12Be Ground State

17 février 2012

Data have been obtained on exclusive single neutron knockout cross sections from 12Be to study its ground state structure. The cross sections for the production of 11Be in its ground state (1/2+) and first excited state (0.32 MeV, 1/2−) have previously been measured, indicating a strong (2s½)2 (...)

Lire la suite

The Neutrons for Science Facility at SPIRAL‐2

10 janvier 2012

The "Neutrons for Science" (NFS) facility will be a component of SPIRAL‐2, the future accelerator dedicated to the production of very intense radioactive ion beams, under construction at GANIL in Caen (France). NFS will be composed of a pulsed neutron beam for in‐flight measurements and (...)

Lire la suite

The Neutrons for Science Facility at SPIRAL‐2

10 janvier 2012

The "Neutrons for Science" (NFS) facility will be a component of SPIRAL‐2, the future accelerator dedicated to the production of very intense radioactive ion beams, under construction at GANIL in Caen (France). NFS will be composed of a pulsed neutron beam for in‐flight measurements and (...)

Lire la suite

Medley spectrometer for light ions in neutron-induced reactions at 175 MeV

20 juin 2011

We have upgraded the Medley spectrometer to measure neutron-induced double differential cross-sections for light-ion production, with neutron energies up to 175 MeV. Measurements were performed at the quasi-monoenergetic neutron beam line at the The Svedberg Laboratory, in Uppsala (Sweden). (...)

Lire la suite

[in2p3-00601804] Medley spectrometer for light ions in neutron-induced reactions at 175 MeV

20 juin 2011

We have upgraded the Medley spectrometer to measure neutron-induced double differential cross-sections for light-ion production, with neutron energies up to 175 MeV. Measurements were performed at the quasi-monoenergetic neutron beam line at the The Svedberg Laboratory, in Uppsala (Sweden). (...)

Lire la suite

The GUINEVERE Project for Accelerator Driven System Physics

9 septembre 2009

The GUINEVERE project is part of the EUROTRANS Integrated Project of the 6th EURATOM Framework Programme. It is mainly devoted to ADS on-line reactivity monitoring validation, sub-criticality determination and operational procedures (loading, start-up, shut-down, ...) as a follow-up of the MUSE (...)

Lire la suite

The GUINEVERE Project for Accelerator Driven System Physics

9 septembre 2009

The GUINEVERE project is part of the EUROTRANS Integrated Project of the 6th EURATOM Framework Programme. It is mainly devoted to ADS on-line reactivity monitoring validation, sub-criticality determination and operational procedures (loading, start-up, shut-down, ...) as a follow-up of the MUSE (...)

Lire la suite

GUINEVERE: Construction of a Zero-Power Pb ADS at Mol

7 mai 2009

The GUINEVERE project is running since 2007 and is part of the EUROTRANS Integrated Project of the 6th EURATOM Framework Programme. It consists first in the construction of a lead fast ADS mock-up at SCK-CEN Mol (Belgium) for the purpose of ADS subcriticality monitoring experiments, and beyond (...)

Lire la suite

GUINEVERE: Construction of a Zero-Power Pb ADS at Mol

7 mai 2009

The GUINEVERE project is running since 2007 and is part of the EUROTRANS Integrated Project of the 6th EURATOM Framework Programme. It consists first in the construction of a lead fast ADS mock-up at SCK-CEN Mol (Belgium) for the purpose of ADS subcriticality monitoring experiments, and beyond (...)

Lire la suite

A neutron beam facility at SPIRAL-2

26 juin 2008

The future SPIRAL-2 facility is mainly composed of a high-power superconducting driver LINAC, delivering a high-intensity deuteron, proton and heavy ions beams. The first two beams are particularly well suited to the construction of a neutron beam and irradiation facility called Neutrons for (...)

Lire la suite

A neutron beam facility at SPIRAL-2

26 juin 2008

The future SPIRAL-2 facility is mainly composed of a high-power superconducting driver LINAC, delivering a high-intensity deuteron, proton and heavy ions beams. The first two beams are particularly well suited to the construction of a neutron beam and irradiation facility called Neutrons for (...)

Lire la suite

Single-Proton Removal Reaction Study of $^{16}$B

29 février 2008

The low-lying level structure of the unbound system $^16$B has been investigated via single-proton removal from a 35 MeV/nucleon $^17$C beam. The coincident detection of the beam velocity $^15$B fragment and neutron allowed the relative energy of the in-flight decay of $^16$B to be (...)

Lire la suite

[in2p3-00259696] Single-Proton Removal Reaction Study of $^{16}$B

29 février 2008

The low-lying level structure of the unbound system $^16$B has been investigated via single-proton removal from a 35 MeV/nucleon $^17$C beam. The coincident detection of the beam velocity $^15$B fragment and neutron allowed the relative energy of the in-flight decay of $^16$B to be (...)

Lire la suite

(n,Xn) measurements at 96 MeV

5 juillet 2007

Double differential cross section for neutron production were measured in 96MeV neutrons induced reactions at the TSL laboratory in Uppsala (Sweden). Measurements for Fe and Pb targets were performed using simultaneously two independent setups: DECOI-DEMON and CLODIA-SCANDAL. The double (...)

Lire la suite

(n,Xn) measurements at 96 MeV

5 juillet 2007

Double differential cross section for neutron production were measured in 96MeV neutrons induced reactions at the TSL laboratory in Uppsala (Sweden). Measurements for Fe and Pb targets were performed using simultaneously two independent setups: DECOI-DEMON and CLODIA-SCANDAL. The double (...)

Lire la suite

B(E1) Strengths from Coulomb Excitation of $^{11}$Be

25 mai 2007

The $B$(E1;$1/2^+\to1/2^-$) strength for $^11$Be has been extracted from intermediate energy Coulomb excitation measurements, over a range of beam energies using a new reaction model, the extended continuum discretized coupled channels (XCDCC) method. In addition, a measurement of the (...)

Lire la suite

[in2p3-00149418] B(E1) Strengths from Coulomb Excitation of $^{11}$Be

25 mai 2007

The $B$(E1;$1/2^+\to1/2^-$) strength for $^11$Be has been extracted from intermediate energy Coulomb excitation measurements, over a range of beam energies using a new reaction model, the extended continuum discretized coupled channels (XCDCC) method. In addition, a measurement of the (...)

Lire la suite

A telescope for monitoring fast neutron sources

28 février 2007

In the framework of nuclear waste management, highly radiotoxic long-lived fission products and minor actinides are planned to be transmuted in a sub-critical reactor coupled with an intense external neutron source. The latter source would be created by a high-energy proton beam hitting a high (...)

Lire la suite

[in2p3-00134052] A telescope for monitoring fast neutron sources

28 février 2007

In the framework of nuclear waste management, highly radiotoxic long-lived fission products and minor actinides are planned to be transmuted in a sub-critical reactor coupled with an intense external neutron source. The latter source would be created by a high-energy proton beam hitting a high (...)

Lire la suite

A novel fast neutron detector for nuclear data measurements

24 novembre 2006

Accelerator driven system will use a heavy element target such as lead. Many calculations are available to simulate high-energy spallation neutron induced reactions, but little data are available for comparison with the simulations. In order to constrain the simulation tools we have measured (...)

Lire la suite

A novel fast neutron detector for nuclear data measurements

24 novembre 2006

Accelerator driven system will use a heavy element target such as lead. Many calculations are available to simulate high-energy spallation neutron induced reactions, but little data are available for comparison with the simulations. In order to constrain the simulation tools we have measured (...)

Lire la suite

$\beta$-decay studies at the N=28 shell closure: indications for a weakening of the spin-orbit force far from stability ?

10 novembre 2006

A β-decay experiment on nuclei in the region of N=28 has been performed at the GANIL facility. New measured half-lives for the Si isotopes from N=25 to N=28 are reported and discussed in the light of the deformation occuring in this region. Comparison with QRPA calculations suggests that a (...)

Lire la suite

$\beta$-decay studies at the N=28 shell closure: indications for a weakening of the spin-orbit force far from stability ?

10 novembre 2006

A β-decay experiment on nuclei in the region of N=28 has been performed at the GANIL facility. New measured half-lives for the Si isotopes from N=25 to N=28 are reported and discussed in the light of the deformation occuring in this region. Comparison with QRPA calculations suggests that a (...)

Lire la suite

Neutron flux measurements in the TRADE experiment : Critical configuration

18 septembre 2006

The TRiga Accelerator Driven Experiment (TRADE) to be performed in the existing TRIGA reactor of the ENEA Casaccia centre had the objective of coupling a spallation target, a proton accelerator and a sub-critical reactor core. On the way of the transmutation of minor actinides in dedicated (...)

Lire la suite

Neutron flux measurements in the TRADE experiment : Critical configuration

18 septembre 2006

The TRiga Accelerator Driven Experiment (TRADE) to be performed in the existing TRIGA reactor of the ENEA Casaccia centre had the objective of coupling a spallation target, a proton accelerator and a sub-critical reactor core. On the way of the transmutation of minor actinides in dedicated (...)

Lire la suite

Experimental studies of unbound neutron-rich nuclei

15 septembre 2006

The three-body description of two-neutron halo nuclei relies on the two-body interaction between the constituents. In order to provide constraints on calculations devoted to $^14$Be and $^17$B, neutron unbound states of $^13$Be and $^16$B have been populated by one-proton knockout. The (...)

Lire la suite

Experimental studies of unbound neutron-rich nuclei

15 septembre 2006

The three-body description of two-neutron halo nuclei relies on the two-body interaction between the constituents. In order to provide constraints on calculations devoted to $^14$Be and $^17$B, neutron unbound states of $^13$Be and $^16$B have been populated by one-proton knockout. The (...)

Lire la suite

Spectroscopy Near the N=20 Shell Closure: $\beta$-n Decay Studies of $^{33}$Mg and $^{35}$Al

21 juillet 2006

An experimental spectroscopic investigation of some neutron rich Mg and Al isotopes around the shell closure N=20 has been performed. The delayed neutron and $\gamma$ spectra, following the $\beta$-decay of $^33$Mg and $^35$Al have been measured using the delayed neutron detector array TONNERRE (...)

Lire la suite

Spectroscopy Near the N=20 Shell Closure: $\beta$-n Decay Studies of $^{33}$Mg and $^{35}$Al

21 juillet 2006

An experimental spectroscopic investigation of some neutron rich Mg and Al isotopes around the shell closure N=20 has been performed. The delayed neutron and $\gamma$ spectra, following the $\beta$-decay of $^33$Mg and $^35$Al have been measured using the delayed neutron detector array TONNERRE (...)

Lire la suite

Monitoring of 14 MeV neutrons

6 juin 2006

Long-lived fission products and minor actinides produced in nuclear power plants are the most radiotoxic nuclear wastes. They can be transmuted into stable nuclei or into nuclei with shorter lifetime thanks to the so-called Accelerator Driven Systems (ADS), consisting of the coupling of an (...)

Lire la suite

Monitoring of 14 MeV neutrons

6 juin 2006

Long-lived fission products and minor actinides produced in nuclear power plants are the most radiotoxic nuclear wastes. They can be transmuted into stable nuclei or into nuclei with shorter lifetime thanks to the so-called Accelerator Driven Systems (ADS), consisting of the coupling of an (...)

Lire la suite

Structure of $^{12}$Be : intruder d-wave strength at N=8

17 février 2006

The breaking of the N=8 shell-model magic number in the $^12$Be ground state has been determined to include significant occupancy of the intruder d-wave orbital. This is in marked contrast with all other N=8 isotones, both more and less exotic than $^12$Be. The occupancies of the 0hw vp$_1/2$ (...)

Lire la suite

[in2p3-00025637] Structure of $^{12}$Be : intruder d-wave strength at N=8

17 février 2006

The breaking of the N=8 shell-model magic number in the $^12$Be ground state has been determined to include significant occupancy of the intruder d-wave orbital. This is in marked contrast with all other N=8 isotones, both more and less exotic than $^12$Be. The occupancies of the 0hw vp$_1/2$ (...)

Lire la suite

Experimental evidence of a $\mathrm{\ensuremath{\nu(1d_{^5/_2})^2} }$ component to the $^{12}$Be ground state

17 février 2006

Data have been obtained on exclusive single neutron knockout cross sections from 12Be to study its ground state structure. Preliminary cross sections for the first (0.32 MeV, $\ensuremath^1\!/_2 ^- $ ) and second (1.78 MeV, $\ensuremath^5\!/_2 ^+ $ , unbound) excited states in 11Be have been (...)

Lire la suite

Experimental evidence of a $\mathrm{\ensuremath{\nu(1d_{^5/_2})^2} }$ component to the $^{12}$Be ground state

17 février 2006

Data have been obtained on exclusive single neutron knockout cross sections from 12Be to study its ground state structure. Preliminary cross sections for the first (0.32 MeV, $\ensuremath^1\!/_2 ^- $ ) and second (1.78 MeV, $\ensuremath^5\!/_2 ^+ $ , unbound) excited states in 11Be have been (...)

Lire la suite

High-energy two-neutron removal from $^{10}$Be

6 février 2006

A kinetically complete measurement of the $^12$C($^10$Be, alpha+alpha+n) and ($^10$Be, alpha+alpha) reactions has been performed at a beam energy of 30 MeV/nucleon. The charged beam velocity particles were detected in an array of Si-CsI detectors placed at zero degrees, and the neutrons in an (...)

Lire la suite

[in2p3-00025564] High-energy two-neutron removal from $^{10}$Be

6 février 2006

A kinetically complete measurement of the $^12$C($^10$Be, alpha+alpha+n) and ($^10$Be, alpha+alpha) reactions has been performed at a beam energy of 30 MeV/nucleon. The charged beam velocity particles were detected in an array of Si-CsI detectors placed at zero degrees, and the neutrons in an (...)

Lire la suite

Spectroscopy around N = 20 shell closure: $\beta$–n decay study of $^{35}$Al

10 octobre 2005

An experimental spectroscopic investigation of $^35$Al has been performed. The delayed neutron and $gamma$ spectra, following the $\beta$ decay of $^35$Al, have been measured using the delayed neutron detector array TONNERRE coupled with high efficiency $\gamma$ detectors. A detailed analysis (...)

Lire la suite

Spectroscopy around N = 20 shell closure: $\beta$–n decay study of $^{35}$Al

10 octobre 2005

An experimental spectroscopic investigation of $^35$Al has been performed. The delayed neutron and $gamma$ spectra, following the $\beta$ decay of $^35$Al, have been measured using the delayed neutron detector array TONNERRE coupled with high efficiency $\gamma$ detectors. A detailed analysis (...)

Lire la suite

Etude des systèmes non liés 16B et 13Be

10 juillet 2003

Ce travail porte sur l'étude de deux systèmes non liés, le 16B et le 13Be, dont la structure très exotique fournit de fortes contraintes sur les modèles actuels et des informations primordiales pour modéliser les systèmes à trois corps que sont les noyaux à halo borroméens 17B et 14Be. Les deux (...)

Lire la suite

Etude des systèmes non liés 16B et 13Be

10 juillet 2003

Ce travail porte sur l'étude de deux systèmes non liés, le 16B et le 13Be, dont la structure très exotique fournit de fortes contraintes sur les modèles actuels et des informations primordiales pour modéliser les systèmes à trois corps que sont les noyaux à halo borroméens 17B et 14Be. Les deux (...)

Lire la suite