M.
Frederic Georges
(IPN)
30/05/2017 09:50
Talk
The internal structure of the nucleon - that is, what ordinary matter is made of and what the laws describing it are at their most fundamental level - is still not fully understood by modern nuclear physics. Form factors provide insight about parton positions while parton distribution functions give information about their momentum distribution inside the nucleon, but no correlations can be...
M.
Nabil Chouika
(Irfu/SPhN - CEA Saclay)
30/05/2017 10:10
Talk
The internal structure of hadrons (which are bound-states of quarks and gluons, such as the proton or pion) is difficult to map due to the non-perturbative QCD regime in which the constituents interact. Decades of experiments in the field have allowed us to learn a lot about the distribution of momentum (through what is called parton distribution functions, PDFs) or transverse plane position...
M.
Andre Govinda Stahl
(LLR)
30/05/2017 10:30
Talk
Charmonium states, such as the J/$\psi$ and $\psi$(2S) mesons, are excellent probes of the deconfined state of matter, the Quark-Gluon Plasma (QGP). The understanding of charmonia production in PbPb collisions requires the inclusion of many phenomena, such as dissociation in the QGP and statistical recombination, on top of cold nuclear matter effects. In this talk, final results on the...
M.
Raphaël-David Lasseri
(Institut de Physique Nucléaire d'Orsay)
30/05/2017 11:20
The understanding of the structural properties of nuclei is a long-standing issue. Indeed, the underlying
complexity of a many-body fermionic system in strong interaction, led to the arising of wide panel of
phenomena and behavior. Thus an universal treatment of such properties is particularly challenging.
We'll give a short overview of the usual techniques used to describe nuclear...
M.
Petar Marevic
(IPNO/CEA)
30/05/2017 11:40
Atomic nucleus is a quantum many-body system whose properties are determined by a number of nucleons and the interaction between them. The comprehensive theoretical framework for the description of nuclear systems should therefore be able to account for more than 3000 observed and thousands still unobserved nuclei, including their ground-state, excited-state and reaction properties. It turns...
M.
Mehdi DRISSI
(CEA/SPhN)
30/05/2017 12:00
Through the study of neutron matter, we emphasis the importance of adapting the many-body techniques to the way the nuclear interaction derived from an Effective Field Theory have been renormalized.
M.
Pierre Arthuis
(CEA/DRF/IRFU/SPhN)
30/05/2017 12:20
In the recent years, so-called *ab initio* methods have know a resurgence of interest among the nuclear theory community. Recent investigations [Tichai et al., 2016] have shown that Many-Body Perturbation Theory (MBPT), when using Hamiltonians evolved through the Similarity Renormalization Group method, could provide results competing with more demanding techniques like Self-Consistent Green's...
Mlle
Clotilde Canot
(CEA IRFU)
30/05/2017 12:40
Talk
Positron emission tomography (PET) is a nuclear imaging technique widely used in
oncology. Decay of the tracer emits positrons, which annihilate in the nearby tissue. Two
gamma quanta with the energy 511 keV are produced by positron annihilation and allow
one to reconstruct the annihilation vertex and distribution of the tracer activity in the body
of the patient. I developped an...
M.
Luis Ammour
(Université Paris-Sud - IMNC)
30/05/2017 13:00
Talk
Preclinical behavior neuroimaging gathers simultaneous assessment of behavior and functional brain imaging.
This complementarity is seen as a critical step for comparing animal to human behavior and consequently assess the validity of preclinical studies in drug development.
Achieving such a combination is difficult, anaesthesia or restraints inherent to micro-PET imaging precludes its use...
M.
Michal Rapala
(CEA Saclay/IRFU/DPhN/LERN)
30/05/2017 16:45
The poor accuracy of microscopic models in the prediction of fission observables constrains nuclear industry to rely on semi-empirical models, which in turns need systematic and accurate experimental data on a significant number of observables. In the last decade, large efforts were made in the fission community to improve models of the fission process and of the de-excitation of fission...
M.
Michael Bacak
(CEA Saclay, Irfu; CERN)
30/05/2017 17:05
233U plays the essential role of the fissile nucleus in the Th-U fuel cycle, which has been proposed as a safer and cleaner alternative to the U-Pu fuel cycle. A particularity of 233U is its small neutron capture cross-section which is about one order of magnitude lower than the fission cross-section on average. Therefore, the accuracy in the measurement of the 233U capture cross-section...
M.
Liqiang QI
(IPN NESTER)
30/05/2017 17:25
Prompt fission gamma spectra (PFGS) have been recently measured for the 238U(n,f) and 239Pu (n,f) reactions using fast neutrons produced by the LICORNE directional neutron source. The setup consisted of ionization chambers containing the actinides samples and LaBr3 scintillators to measure the coincident prompt fission gamma rays. Prompt fission gamma rays were discriminated from prompt...
Mlle
Anastasia Georgiadou
(IPN)
30/05/2017 17:45
The experimental study of the neutron-proton pairing is a challenging task that relies on the strength of the physical observables. Binding energies of N = Z nuclei and rotational properties of finite nuclei are some of the tools used up to now. Despite, their robustness to prove other physical phenomena, they are shown to be insufficient to prove the existence of T =0 pairing collectivity. On...
M.
Clément DELAFOSSE
(IPNO)
30/05/2017 18:05
Yrast (\textit{i.e.} the state with the lower energy for a given spin-partiy) and near-Yrast states were populated in the $^{78}$Ni region by fusion-fission reaction $^{238}$U($^9$Be,X$\gamma$) at GANIL. The prompt $\gamma$-rays were detected by the AGATA array\footnote{S. Akkoyun \textit{et al.}, \textit{AGATA - Advanced GAmma Tracking Array}, NIM A668 (2012) 26-58} and particle...
Marta Maria Perego
(CEA Saclay)
31/05/2017 09:30
Talk
Dark Matter constitutes 80% of the matter in the universe, as confirmed by astrophysical and cosmological observations, but it has never been detected directly.
An important role in the search for the dark matter particles is played by the LHC.
In particular, scenarios where the dark matter has a coupling to the Higgs boson can be tested at the LHC by searching for the invisible decay of the...
M.
Corentin Allaire
(LAL)
31/05/2017 09:50
Talk
In 2026 the high luminosity upgrade of the LHC (HL-LHC) will begin, bringing an improvement of a factor up to five for the luminosity (rate of interaction) in comparison to the original design value. One of the implication of the increase of the luminosity is an increase of the pile-up (number of interactions per collision) from around 25 events during the Run1 up to 200 during the HL-LHC for...
Mme
Tasneem Rashid
(LAL)
31/05/2017 10:10
Talk
Silicon detectors are playing a key role in High Energy Physics (HEP) experiments due to their superior tracking capabilities. In view of the upgrade plans of ATLAS experiment toward the high luminosity, the silicon tracking detector (ITK) will be operated in a very intense radiation environment. This work addresses the study of active edge n-in-p planar sensors. Active edge planar pixel...
M.
Sylvain Vanneste
(Laboratoire de l'accélérateur Linéaire, groupe Cosmologie)
31/05/2017 10:50
Physical Cosmology, as it is today understood, began with the development in 1915 of Albert Einstein's general theory of relativity, followed by major observational discoveries in the 1920s. One of the major theories that emerged was that of the Big-Bang. With it follows many predictions of behaviour and properties of our Univers. What is it size? its content? its age? Those are few of the...
Mme
Pauline Zarrouk
(CEA-Saclay)
31/05/2017 11:10
One of the biggest questions of contemporary cosmology is the origin of cosmic acceleration : does it arise from a constant vacuum energy as assumed in ΛCDM or from another form of dark energy that varies in time and space, or from a breakdown of general relativy on cosmological scales? To distinguish between these possibilities, one promising technique is to measure the growth rate of...
M.
Mathieu Lamoureux
(CEA Saclay, IRFU)
31/05/2017 12:00
Talk
In the Standard Model of particle physics, neutrinos are massless. But, from neutrino oscillations experiments, we know that they are massive. The question is: how do they acquire these non-zero masses ?
One of the possible explanations introduces new heavy neutrinos states, with a mass of few keV to GUT scale, that would mix with light neutrinos. Not only would they explain neutrino masses...
Aurélie Bonhomme
(CEA)
31/05/2017 12:20
Talk
Neutrinos - abundant but elusive particles - appear to be good candidates to look for physics beyond the Standard Model. Although our current understanding succeeds to compile most of the data into a three neutrino mixing framework, there are still experimental anomalies that need to be explained, such as the Reactor Antineutrino Anomaly (2011). The latter can be solved by introducing a light...
Mlle
Valentina NOVATI
(CNRS-CSNSM)
31/05/2017 12:40
Talk
The neutrinoless double-beta decay ($0\nu$-DBD) is a hypothetical rare nuclear transition producing only two electrons in the final state. Its discovery would have important consequences, demonstrating the Majorana nature of neutrino, allowing the measurement of its absolute mass scale and proving the non-conservation of the lepton number. Nowadays CUORE - with its 988 TeO$_{2}$-based...
Mlle
Anastasiia Zolotarova
(CEA/IRFU/SPP)
31/05/2017 13:00
Talk
Neutrinoless double beta decay is a hypothetical rare nuclear transition, whose observation can give us information about the neutrino absolute mass scale and hierarchy. The existence of this process will prove that lepton number conservation can be violated and consequently the Standard Model should be extended.
The subject of my PhD...
M.
Walter BATISTA PESSOA
(LETI CEA-GRENOBLE)
31/05/2017 16:45
Talk
Chalcogenide materials are composed of S, Se or Te elements from group VI of the periodic table. For these elements, the sequence of S, Se and Te shows that bonding changes from molecular, covalent, to metallic. They are receiving extensive interest not only for application in advanced memories (Phase Change RAM, Current Bridge RAM) and photovoltaics (i.e. CZTS: Cooper Zinc Tin Sulfide), but...
M.
Alexis Gamelin
(Laboratoire de l’Accélérateur Linéaire)
31/05/2017 17:05
Talk
Ions produced by ionization of the residual gas in electron storage rings can significantly degrade the performance of a machine and produce various beam instabilities. To cure more effectively these problems it is important to understand the ion dynamics in the accelerator. The ions undergo the effect of the electron beam crossing and go through strong transverse oscillations and a longitudinal...
M.
Thomas ANDRE
(Synchrotron SOLEIL)
31/05/2017 17:25
Talk
The COXINEL experiment aims to demonstrate the free electron laser amplification with an electron beam produced by laser plasma acceleration.
For this, a transport line was designed and prepared at the Synchrotron SOLEIL. It consists of three permanent magnet quadrupoles with variable gradient (QUAPEVAs), a demixing chicane, a second set of electromagnetic quadrupoles and a 2 m undulator....
Mlle
Shifali SINGH
(CEA, Cadarache)
31/05/2017 17:45
Talk
In case of a severe accident scenario in sodium-cooled fast reactors, the fuel in the core would melt, generating a hot mixture termed as corium. This corium will then be discharged into the sodium pool through the guide tubes. When the hot molten corium comes in contact with sodium, called Molten Fuel-Coolant Interaction (MFCI), it might generate a violent explosion. Such an explosion can be...
M.
Yawei HUANG
(CEA Saclay)
31/05/2017 18:05
Talk
**JT-60SA** is a fusion experiment which is jointly constructed by Japan and Europe, and which shall contribute to the early realization of fusion energy by providing support to the operation of ITER and by addressing key physics issues for ITER and DEMO. The JT-60SA is based on the existing infrastructure of JT-60U experiment and is upgraded by using **superconducting coils**. JT-60SA tokamak...
M.
Laurent Graziano
(CEA)
31/05/2017 18:25
Talk
In the recent years a solver based on the Method of Characteristics (MOC) allowing the treatment of
3D extruded geometries has been developed inside the TDT module of APOLLO3®. The standard Step Characteristics (SC) approximation is used and results show an excellent agreement with Monte-Carlo simulations. However a fine mesh refinement is needed to converge the strong flux gradients...
M.
Wenjia HUANG
(CSNSM (IN2P3-CNRS & UPS))
Poster
The atomic mass is a key for a better understanding of nuclear structure and nucleosynthesis process within stars. The atomic mass table is widely used in almost all domains of physics, especially in nuclear physics and astrophysics, and they are regarded as the most comprehensive and reliable source of atomic masses.The newest atomic mass table, AME2016, has been published recently[1,2]. Some...
M.
Dmytro HOHOV
(LAL Université Paris-Sud)
Poster
In the frame of the second phase of LHC (CERN) accelerator complex upgrade, during the long shutdown in ~ 2023, it’s planned to increase the beam luminosity up to $\ 5 \times 10^{34} cm^{-2}s^{-1}$ and collision energy up to 14 TeV in the center of mass to achieve the high-precision results in the project tasks. These conditions will lead to additional demands especially on an inner part of...
Mlle
Carlotta Trigila
(IMNC CNRS/IN2P3, Univ. Paris Sud et Paris Diderot, Orsay, France.)
Poster
Targeted radionuclide therapy is still a developing area among the different treatment modalities against cancer but is one of the most used in the treatment of malign and benign diseases of thyroid. The large heterogeneity of absorbed doses in patients and the range of effects observed, both in terms of toxicity and response, demonstrate that an individualized dosimetry is essential for...
M.
Florian NORTIER
(Laboratoire de Physique Théorique d'Orsay)
Poster
In the Standard Model (SM) of Particle Physics, the electroweak (EW) symmetry breaking pattern is the less known and understood. With the discovery of a Higgs-like boson by the Large Hadron Collider (LHC) experiment in 2012, the Brout-Englert-Higgs (BEH) mechanism, which involves a new scalar field to break the EW gauge symmetry, seems to be at work in Nature. Nevertheless, the origin of the...
M.
Julien Guillot
(IPNO - groupe NESTER)
Poster
A research program is developed with the installation ALTO (Accélérateur Linéaire et Tandem d'Orsay) at the Institut de Physique Nucléaire in Orsay to provide intense ion beams of new exotic neutron-rich nuclei. For this purpose, optimizing the fission products (PFs) release is a crucial step. Indeed, the first results demonstrated the correlation between the open porosity and the release...
M.
Ke WANG
(LAL, Universite Paris Sud)
Poster
The ESCULAP project joins the photo injector PHIL with the High Power Laser LASERIX to perform a laser plasma wakefield acceleration (LPA) experiment. A prerequisite is that the electron beam (10pC,10MeV) has to be compressed longitudinally before being injected in the plasma cell from 2000fs (RMS) to less than 300fs (and later 100fs). To achieve such compression we present a solution based on...
M.
Luca Garolfi
(Laboratoire de l'Accélérateur Linéaire (LAL))
Poster
We report the results of a recent beam dynamics study that has led to promising working points for the split ThomX photoinjector. ThomX is a back-scattering Thomson light source project that will use S-band electron Linac with tunable energy from 50 MeV to 70 MeV to produce high X-rays flux (10^11 - 10^13 ph/s) in the energy range from 45 keV to 90 keV. Since ThomX has been conceived to...
M.
Thibault Chevalérias
(CEA Saclay)
Poster
The top quark is the heaviest elementary particle we know. Therefore, it plays a very special role in the Standard Model of particle physics (SM). Its Yukawa coupling to the Higgs boson is close to one, which makes this particle a key element of many Beyond the Standard Model (BSM) theories.
The LHC, located at CERN (Geneva, Switzerland) is a proton - proton collider with a center-of-mass...
M.
Frédéric Gérardin
(CEA/Irfu/SACM)
Poster
The study of the dynamics of low energy beam transport line (LEBT) is one of the major challenges in the high intensity hadron accelerators field.
At low energy, this dynamics is dominated by the charge space field which in many cases is nonlinear and can induce a halo formation, emittance growth and beam losses along the accelerator.
However, a low energy ion beam induces ionization of...
Mlle
ying wang
(Institut de Physique Nucléaire Orsay)
Poster
This work, set in the framework of hadron physics, reports on a phenomenological and an experimental study dedicated to nucleon internal structure, both related to hadron electromagnetic form factor measurements in the time-like and in the space- like regions.
Mlle
Anne Meyer
(Institut de Physique Nucléaire d'Orsay)
Poster
Classical novae outbursts are the third most energetic explosions in the Universe after gamma-ray bursts and supernovae. During this explosive burning, nucleosynthesis takes place and the newly synthesized material is ejected into the interstellar medium. In order to understand these objects, the study of presolar grains and γ-ray emitters are of specific interest since they can give direct...
Mme
Chiara Amendola
(Laboratoire Leprince-Ringuet, Ecole polytechnique)
Poster
The CMS experiment implements a sophisticated two-level triggering system composed of Level-1, instrumented by custom-design hardware boards, and a software High-Level-Trigger. A new Level-1 trigger architecture with improved performance is now being used to maintain the thresholds that were used in LHC Run I for the more challenging luminosity conditions experienced during Run II. The...
