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1. Multi-angle TOF MR brain angiography of the common marmoset.

Author: Muriel Mescam, J. Brossard, N. Vayssiere, and Caroline Fonta
Published: 2017
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2. Railway Detection: From Filtering to Segmentation Networks

Author: J. Brossard, G. Villemin, Alexandre Boulch, A. Beaupere, A. Manier, B. Le Saux, DTIS, ONERA, Université Paris Saclay (COmUE) [Palaiseau], ONERA-Université Paris Saclay (COmUE), and ALTAMETRIS
Subjects: [PHYS]Physics [physics], FILTERING, Computer science, business.industry, RAILWAY DETECTION, 0211 other engineering and technologies, 02 engineering and technology, Image segmentation, NEURAL NETWORKS, computer.software_genre, Field (computer science), [SPI]Engineering Sciences [physics], 0202 electrical engineering, electronic engineering, information engineering, Global Positioning System, 020201 artificial intelligence & image processing, Segmentation, [INFO]Computer Science [cs], Data mining, [MATH]Mathematics [math], business, RAIL DETECTION, computer, Image resolution, 021101 geological & geomatics engineering
Abstract: International audience; This paper deals with classification of remote sensing data to extract objects for industrial mapping. While land-cover or urban mapping have been extensively studied, industrial cartography remains a field yet to explore, in spite of tremendous needs. We present and compare here four approaches for railway detection in very high resolution images. They use various kind of filtering approaches, including the trained filters of fully convolutional networks. Moreover, they benefit from different a-priori and post-processing techniques to make them more robust. We evaluate all approaches on a challenging dataset captured on an operating station site with complex objects.
Published: 2018

3. PLANCK-HFI: performances of an optical concept for the cosmic microwave background anisotropies measurement

Author: I. Ristorcelli, Emily Gleeson, Y. Longval, Bruno Maffei, J.-M. Lamarre, V. Yurchenko, J.Anthony Murphy, and J. Brossard
Subjects: Physics, Electromagnetic spectrum, media_common.quotation_subject, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Spectral density, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, CMB cold spot, Universe, symbols.namesake, Cosmic infrared background, symbols, Angular resolution, Planck, media_common
Abstract: PLANCK is a project of the European Space Agency to be launched in February 2007 by an Ariane V rocket with the Herschel Space Observatory. It is designed for imaging the temperature and polarization anisotropies of the millimetre and sub-millimetre radiation over the whole sky with unprecedented sensitivity, accuracy and angular resolution using 9 frequency channels ranging between 25 and 1000 GHz. The main source at these frequencies is the Cosmic Microwave Background (CMB), i.e. the radiation emitted by the early universe when, about 300000 years old, ionised hydrogen recombined and became transparent from the visible to radio frequencies of the electromagnetic spectrum. The main goal of the PLANCK mission is to retrieve the main cosmological parameters of the Universe with accuracies of a few percent from the observation and analysis of random small contrast (10-4) features in the CMB. The angular power spectrum of the CMB anisotropies is a function of the fundamental cosmological parameters. A proper measurement of all the angular frequencies of the CMB is essential for an accurate interpretation of the data. In consequence the optical performances of Planck will directly impact the ability of retrieving theses parameters. Recent results of the Willkinson Microwave Anisotropy Probe (WMAP) mission show that polarization information of CMB radiation is very challenging, and that the precise measurement of the CMB could completely change the knowledge we have on our universe. The focal plane assembly (FPA) of the PLANCK telescope is composed of two instruments. The High Frequency Instrument (HFI) of PLANCK is the most sensitive CMB experiment ever planned. Together with the Low Frequency Instrument (LFI), this will make a unique tool to measure the full sky and to separate various components of its spectrum. This paper describes the main performances of the HFI beams and compares results obtained with 2 different softwares: GRASP8 and an home-made software developed at the Ireland National University of Maynooth. Specials attention will be paid to polarized beams (100, 143, 217, 353 GHz) and multimoded channels (545 and 857 GHz).
Published: 2018

4. Iterated Proportional Fitting Procedure and Infinite Products of Stochastic Matrices

Author: C. Leuridan and J. Brossard
Subjects: Sequence, 021103 operations research, Kullback–Leibler divergence, Iterative proportional fitting, 010102 general mathematics, Diagonal, 0211 other engineering and technologies, Infinite product, 02 engineering and technology, 01 natural sciences, Combinatorics, Matrix (mathematics), Iterated function, Diagonal matrix, 0101 mathematics, Mathematics
Abstract: The iterative proportional fitting procedure (IPFP), introduced in 1937 by Kruithof, aims to adjust the elements of an array to satisfy specified row and column sums. Thus, given a rectangular non-negative matrix X0 and two positive marginals a and b, the algorithm generates a sequence of matrices (Xn)n≥0 starting at X0, supposed to converge to a biproportional fitting, that is, to a matrix Y whose marginals are a and b and of the form Y = D1X0D2, for some diagonal matrices D1 and D2 with positive diagonal entries.
Published: 2018

5. Vortex kinematics around a submerged plate under water waves. Part II: Numerical computations

Author: Elie Rivoalen, Lei Cao, Gaële Perret, J. Brossard, Grégory Pinon, Adrien Poupardin, Laboratoire Ondes et Milieux Complexes (LOMC), Centre National de la Recherche Scientifique (CNRS)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU), Institut d'électronique fondamentale (IEF), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, [PHYS]Physics [physics], Computation, General Physics and Astronomy, 02 engineering and technology, Kinematics, Mechanics, Vorticity, 01 natural sciences, 010305 fluids & plasmas, Vortex, Physics::Fluid Dynamics, Dipole, 020303 mechanical engineering & transports, 0203 mechanical engineering, 0103 physical sciences, Vector field, Scaling, Helmholtz decomposition, Mathematical Physics
Abstract: International audience; This paper presents numerical computations of the flow generated by a horizontal plate immersed in a regular wave field, and associated loads acting on the plate. This numerical work is the continuation of the Poupardin et al. (2012) experimental study. This numerical study is original in the way that the vortical aspects of the flow are not neglected. Therefore, a 2D Lagrangian Vortex method is used as a numerical scheme. These methods are particularly well suited for the computation of unsteady and highly rotational flows in an open domain. The velocity field is decomposed into rotational and potential components, using the Helmholtz decomposition. The rotational part of the velocity is calculated by the Biot-Savart equation using vortex particles. The plate is modelled by a distribution of normal dipoles and the wave field is taken into account by means of a Stokes formulation, which completes the potential part of the velocity. Firstly, the numerical code is validated by means of comparison with the experimental results of Poupardin et al. (2012). In particular, the complex vortical activity and the mean flow velocity field are well reproduced and physically analysed. Secondly, forces acting on the plate are analysed on a wide range of parameters by varying the plate immersions and lengths. In the end, a new scaling is found for the lift forces acting on the plate based on the modified Stokes velocity (i.e. the bottom Stokes velocity for a water depth equals to the plate immersion) and the square of the plate length.
Published: 2017

6. QUBIC - the Q&U Bolometric Interferometer for Cosmology: A novel way to look at the polarized Cosmic Microwave Background

Author: M. Piat, A. Passerini, M. W. Ng, J. Rodriguez Martino, A. Ghribi, Alessandro Buzzelli, M. Giard, N. Bleurvacq, F. Piacentini, S. Melhuish, L. Mele, P. Chanial, J.-Ch. Hamilton, Maria Salatino, R. Puddu, L. Grandsire, J. Lande, Peter T. Timbie, Jonathan Aumont, Carole Tucker, B. Watson, Bruno Maffei, Andrei Korotkov, Damien Rambaud, A. Zullo, O. Rigaut, C. Perbost, Massimo Gervasi, Mark McCulloch, S. Marnieros, A. Baù, A. Lowitz, Giampaolo Pisano, D. Néel, G. Bordier, M. De Petris, P. Battaglia, N. Krachmalnicoff, L. Montier, A. Mennella, D. Cammilleri, O. Perdereau, Michele De Leo, Créidhe O'Sullivan, Cristian Franceschet, F. Incardona, D. Bennett, Peter A. R. Ade, D. Buzi, Victor Haynes, F. Couchot, F. Suarez, G. S. Tucker, N. Vittori, M. Tristram, D. Harari, Lucio Piccirillo, B. Bélier, Jean Kaplan, Sophie Henrot-Versille, S. Loucatos, Luca Lamagna, L. Dumoulin, Alessandro Paiella, Bruce Rafael Mellado Garcia, Alessandro Coppolecchia, F. Columbro, A. Tartari, D. Viganò, J. Brossard, Rocco D'Agostino, Andrew May, F. Pajot, Elia S. Battistelli, D. Gayer, L. Bergé, Silvia Masi, D. Burke, Marcin Gradziel, N. Holtzer, Gabriele Coppi, Steve Torchinsky, Giuseppe D'Alessandro, M. C. Medina, C. Chapron, A. Etchegoyen, Marco Bersanelli, Mario Zannoni, A. Pelosi, S. Scully, G. de Gasperis, Bigot-Sazy, J.-Ph. Bernard, A. Gault, S. Banfi, Vladimir V. Luković, Francesco Cavaliere, E. Bunn, D. Prêle, A. Murphy, F. Voisin, M. Stolpovskiy, Gustavo E. Romero, F. Del Torto, Y. Giraud-Héraud, P. de Bernardis, A. Schillaci, T. Decourcelle, Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Mennella, A, Ade, P, Aumont, J, Banfi, S, Incardona, F, Battaglia, P, Battistelli, E, Baù, A, Bélier, B, Bennett, D, Bergé, L, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bleurvacq, N, Bordier, G, Brossard, J, Bunn, E, Burke, D, Buzi, D, Buzzelli, A, Cammilleri, D, Cavaliere, F, Chanial, P, Chapron, C, Columbro, F, Coppi, G, Coppolecchia, A, Couchot, F, D'Agostino, R, D'Alessandro, G, De Bernardis, P, De Gasperis, G, De Leo, M, De Petris, M, Decourcelle, T, Del Torto, F, Dumoulin, L, Etchegoyen, A, Franceschet, C, Garcia, B, Gault, A, Gayer, D, Gervasi, M, Ghribi, A, Giard, M, Giraud-Héraud, Y, Gradziel, M, Grandsire, L, Hamilton, J, Harari, D, Haynes, V, Henrot-Versillé, S, Holtzer, N, Kaplan, J, Korotkov, A, Krachmalnicoff, N, Lamagna, L, Lande, J, Loucatos, S, Lowitz, A, Lukovic, V, Maffei, B, Marnieros, S, Martino, J, Masi, S, May, A, Mcculloch, M, Medina, M, Mele, L, Melhuish, S, Montier, L, Murphy, A, Néel, D, Ng, M, O'Sullivan, C, Paiella, A, Pajot, F, Passerini, A, Pelosi, A, Perbost, C, Perdereau, O, Piacentini, F, Piat, M, Piccirillo, L, Pisano, G, Prêle, D, Puddu, R, Rambaud, D, Rigaut, O, Romero, G, Salatino, M, Schillaci, A, Scully, S, Stolpovskiy, M, Suarez, F, Tartari, A, Timbie, P, Torchinsky, S, Tristram, M, Tucker, C, Tucker, G, Viganò, D, Vittori, N, Voisin, F, Watson, B, Zannoni, M, and Zullo, A
Subjects: cosmological model, interferometer, Cosmic microwave background, Cosmic background radiation, FOS: Physical sciences, 02 engineering and technology, cosmic background radiation, 01 natural sciences, 7. Clean energy, Cosmology, law.invention, 010309 optics, FIS/05 - ASTRONOMIA E ASTROFISICA, bolometer, law, 0103 physical sciences, Astronomical interferometer, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Instrumentation and Methods for Astrophysics (astro-ph.IM), Astrophysics::Galaxy Astrophysics, Physics, polarization, Gravitational wave, Bolometer, Astrophysics::Instrumentation and Methods for Astrophysics, gravitational radiation: primordial, Cosmic Microwave Background, Polarimetry, Interferometry, Bolometers, Astronomy, 021001 nanoscience & nanotechnology, Polarization (waves), sensitivity, calibration, Interferometry, duality, 0210 nano-technology, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: In this paper we describe QUBIC, an experiment that takes up the challenge posed by the detection of primordial gravitational waves with a novel approach, that combines the sensitivity of state-of-the art bolometric detectors with the systematic effects control typical of interferometers. The so-called "self-calibration" is a technique deeply rooted in the interferometric nature of the instrument and allows us to clean the measured data from instrumental effects. The first module of QUBIC is a dual band instrument (150 GHz and 220 GHz) that will be deployed in Argentina during the Fall 2018., Presented at the EPS Conference on High Energy Physics, Venice (Italy), 5-12 July 2017 Accepted for publication in conference proceedings
Published: 2017

7. Multi-angle TOF MR brain angiography of the common marmoset

Author: Nathalie Vayssiere, Muriel Mescam, Caroline Fonta, J. Brossard, Neurochirurgie [Hôpital Gui de Chauliac], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Gui de Chauliac [Montpellier], Centre de recherche cerveau et cognition (CERCO), Institut des sciences du cerveau de Toulouse. (ISCT), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), and Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-CHU Toulouse [Toulouse]-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)
Subjects: medicine.diagnostic_test, biology, Computer science, business.industry, Marmoset, Image processing, Magnetic resonance imaging, Context (language use), Pattern recognition, Image segmentation, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, [SPI]Engineering Sciences [physics], 0302 clinical medicine, Robustness (computer science), biology.animal, Digital image processing, Angiography, medicine, Computer vision, Artificial intelligence, business, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, 030217 neurology & neurosurgery, ComputingMilieux_MISCELLANEOUS
Abstract: The relation between normal and pathological aging and the cerebrovascular component is still unclear. In this context, the common marmoset, which has the advantage of enabling longitudinal studies over a reasonable timeframe, appears as a good pre-clinical model. However, there is still a lack of quantitative information on the macrovascular structure of the marmoset brain. In this paper, we investigate the potentiality of multi-angle TOF MR angiography using a 3T MRI scanner to perform morphometric analysis of the marmoset brain vasculature. Our image processing pipeline greatly relies on the use of multiscale vesselness enhancement filters to help extract the 3D macrovasculature and perform subsequent morphometric calculations. Although multi-angle acquisition does not improve morphometric analysis significantly as compared to single-angle acquisition, it improves the network extraction by increasing the robustness of image processing algorithms.
Published: 2017

8. FreeCAD visualization of realistic 3D physical optics beams within a CAD system-model

Author: D. Gayer, J. Brossard, Créidhe O'Sullivan, D. Burke, C. Chapron, and S. Scully
Subjects: Physics, 020209 energy, 02 engineering and technology, Physical optics, 01 natural sciences, 010305 fluids & plasmas, law.invention, Atomic, molecular, and optical physics, Visualization, Interferometry, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Astronomical interferometer, MATLAB, computer, Beam splitter, Simulation, Beam (structure), computer.programming_language
Abstract: The facility to realise the shape and extent of optical beams within a telescope or beamcombiner can aid greatly in the design and layout of optical elements within the system. It can also greatly facilitate communication between the optical design team and other teams working on the mechanical design of an instrument. Beyond the realm where raytracing is applicable however, it becomes much more difficult to realise accurate 3D beams which incorporate diffraction effects. It then is another issue to incorporate this into a CAD model of the system. A novel method is proposed which has been used to aid with the design of an optical beam combiner for the QUBIC (Q and U Bolometric Interferometer for Cosmology) 1 experiment operating at 150 GHz and 220 GHz. The method combines calculation work in GRASP 2, a commercial physical optics modelling tool from TICRA, geometrical work in Mathematica, and post processing in MATLAB. Finally, the Python console of the open source package FreeCAD3 is exploited to realise the 3D beams in a complete CAD system-model of the QUBIC optical beam combiner. This paper details and explains the work carried out to reach the goal and presents some graphics of the outcome. 3D representations of beams from some back-to-back input horns of the QUBIC instrument are shown within the CAD model. Beams of the -3dB and -13dB contour envelope are shown as well as envelopes enclosing 80% and 95% of the power of the beam. The ability to see these beams in situ with all the other elements of the combiner such as mirrors, cold stop, beam splitter and cryostat widows etc. greatly simplified the design for these elements and facilitated communication of element dimension and location between different subgroups within the QUBIC group.
Published: 2016

9. Optical design and modelling of the QUBIC instrument, a next-generation quasi-optical bolometric interferometer for cosmology

Author: A. Ghribi, L. Montier, D. Cammileri, D. Burke, L. Grandsire, J. Brossard, Peter T. Timbie, J. A. Murphy, Créidhe O'Sullivan, Giampaolo Pisano, N. Bleurvacq, J. C. Hamilton, P. Battaglia, J. Kaplan, Emory F. Bunn, G. Bordier, Marco Bersanelli, Alessandro Schillaci, Mario Zannoni, M. Giard, J.-Ph. Bernard, S. Scully, B. Bélier, J. Lande, O. Rigaut, T. Decourcelle, Giuseppe D'Alessandro, M.-A. Bigot-Sazy, A. Mennella, D. Buzi, A. Gault, Cristian Franceschet, M. Piat, O. Perdereau, D. Prêle, D. Bennet, Victor Haynes, L. Dumoulin, S. Banfi, J. Martino, F. Voisin, Lucio Piccirillo, D. Viganò, Sophie Henrot-Versille, M. W. Ng, Y. Giraud-Héraud, Massimo Gervasi, Andrei Korotkov, Marcin Gradziel, F. Piacentini, Maria Salatino, P. Chanial, Damien Rambaud, Jonathan Aumont, Simon J. Melhuish, A. Baù, N. Holtzer, M. De Petris, Mark McCulloch, M. Stolpovskiy, F. Del Torto, S. Marnieros, Bruno Maffei, P. de Bernardis, F. Pajot, Elia S. Battistelli, D. Gayer, Francesco Cavaliere, Gregory S. Tucker, L. Bergé, Alessandro Coppolecchia, A. Lowitz, M. Tristram, C. Perbost, B. Watson, R. Puddu, F. Couchot, D. Néel, A. Passerini, A. Tartari, C. Chapron, Silvia Masi, Holland, WS, Scully, S, Burke, D, O'Sullivan, C, Gayer, D, Gradziel, M, Murphy, J, De Petris, M, Buzi, D, Zannoni, M, Mennella, A, Gervasi, M, Tartari, A, Maffei, B, Aumont, J, Banfi, S, Battaglia, P, Battistelli, E, Bau', A, Bélier, B, Bennet, D, Bergé, L, Bernard, J, Bersanelli, M, Bigot Sazy, M, Bleurvacq, N, Bordier, G, Brossard, J, Bunn, E, Cammileri, D, Cavaliere, F, Chanial, P, Chapron, C, Coppolecchia, A, Couchot, F, D'Alessandro, G, De Bernardis, P, Decourcelle, T, Del Torto, F, Dumoulin, L, Franceschet, C, Gault, A, Ghribi, A, Giard, M, Giraud Héraud, Y, Grandsire, L, Hamilton, J, Haynes, V, Henrot Versillé, S, Holtzer, N, Kaplan, J, Korotkov, A, Lande, J, Lowitz, A, Marnieros, S, Martino, J, Masi, S, Mcculloch, M, Melhuish, S, Montier, L, Néel, D, Ng, M, Pajot, F, Passerini, A, Perbost, C, Perdereau, O, Piacentini, F, Piat, M, Piccirillo, L, Pisano, G, Prêle, D, Puddu, R, Rambaud, D, Rigaut, O, Salatino, M, Schillaci, A, Stolpovskiy, M, Timbie, P, Tristram, M, Tucker, G, Viganò, D, Voisin, F, and Watson, B
Subjects: Bolometric interferometry, QUBIC, Aperture, Cosmic microwave background, Condensed Matter Physic, Astrophysics::Cosmology and Extragalactic Astrophysics, CMB, 01 natural sciences, Cosmology, law.invention, 010309 optics, Telescope, FIS/05 - ASTRONOMIA E ASTROFISICA, symbols.namesake, Optics, law, 0103 physical sciences, Astronomical interferometer, Stokes parameters, Electrical and Electronic Engineering, Planck, 010303 astronomy & astrophysics, Physics, business.industry, Electronic, Optical and Magnetic Material, Astrophysics::Instrumentation and Methods for Astrophysics, B-modes, Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Computer Science Applications1707 Computer Vision and Pattern Recognition, Applied Mathematics, Applied Mathematic, Interferometry, FIS/01 - FISICA SPERIMENTALE, B-mode, symbols, business
Abstract: Big Bang cosmologies predict that the cosmic microwave background (CMB) contains faint temperature and polarisation anisotropies imprinted in the early universe. ESA's PLANCK satellite has already measured the temperature anisotropies1 in exquisite detail; the next ambitious step is to map the primordial polarisation signatures which are several orders of magnitude lower. Polarisation E-modes have been measured2 but the even-fainter primordial B-modes have so far eluded detection. Their magnitude is unknown but it is clear that a sensitive telescope with exceptional control over systematic errors will be required. QUBIC3 is a ground-based European experiment that aims to exploit the novel concept of bolometric interferometry in order to measure B-mode polarisation anisotropies in the CMB. Beams from an aperture array of corrugated horns will be combined to form a synthesised image of the sky Stokes parameters on two focal planes: one at 150 GHz the other at 220 GHz. In this paper we describe recent optical modelling of the QUBIC beam combiner, concentrating on modelling the instrument point-spread-function and its operation in the 220-GHz band. We show the effects of optical aberrations and truncation as successive components are added to the beam path. In the case of QUBIC, the aberrations introduced by off-axis mirrors are the dominant contributor. As the frequency of operation is increased, the aperture horns allow up to five hybrid modes to propagate and we illustrate how the beam pattern changes across the 25% bandwidth. Finally we describe modifications to the QUBIC optical design to be used in a technical demonstrator, currently being manufactured for testing in 2016.
Published: 2016

10. QUBIC: A Fizeau Interferometer Targeting Primordial B-Modes

Author: J.-Ph. Bernard, M.-A. Bigot-Sazy, Lucio Piccirillo, D. Buzi, J. Martino, F. Voisin, D. Prêle, Maria Salatino, J.-Ch. Hamilton, L. Montier, A. Mennella, L. Dumoulin, M. Giard, C. Perbost, F. Piacentini, D. Bennett, A. Lowitz, D. Viganò, Y. Giraud-Héraud, Francesco Cavaliere, Jonathan Aumont, Emory F. Bunn, P. Chanial, P. Battaglia, Gregory S. Tucker, N. Bleurvacq, J. Kaplan, G. Bordier, Massimo Gervasi, B. Bélier, T. Decourcelle, Alessandro Schillaci, Simon J. Melhuish, Cristian Franceschet, A. Baù, N. Holtzer, Andrei Korotkov, Damien Rambaud, Giuseppe D'Alessandro, Mark McCulloch, S. Marnieros, Silvia Masi, M. Piat, M. Stolpovskiy, F. Del Torto, P. de Bernardis, Giampaolo Pisano, C. Chapron, A. Ghribi, A. Gault, J. Lande, L. Grandsire, S. Banfi, Peter T. Timbie, D. Cammilleri, D. Néel, Victor Haynes, Marcin Gradziel, O. Rigaut, A. Passerini, A. Tartari, M. De Petris, M. W. Ng, Marco Bersanelli, Mario Zannoni, S. Scully, Anna Murphy, B. Watson, J. Brossard, Créidhe O'Sullivan, Laurent Bergé, Bruno Maffei, F. Pajot, Alessandro Coppolecchia, Elia S. Battistelli, D. Gayer, CSNSM INSTRU, Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM PS1), Université Paris-Saclay-Univ. Paris-Sud-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Tartari, A, Aumont, J, Banfi, S, Battaglia, P, Battistelli, E, Bau', A, Bélier, B, Bennett, D, Bergé, L, Bernard, J, Bersanelli, M, Bigot Sazy, M, Bleurvacq, N, Bordier, G, Brossard, J, Bunn, E, Buzi, D, Cammilleri, D, Cavaliere, F, Chanial, P, Chapron, C, Coppolecchia, A, D’Alessandro, G, De Bernardis, P, Decourcelle, T, Del Torto, F, De Petris, M, Dumoulin, L, Franceschet, C, Gault, A, Gayer, D, Gervasi, M, Ghribi, A, Giard, M, Giraud Héraud, Y, Gradziel, M, Grandsire, L, Hamilton, J, Haynes, V, Holtzer, N, Kaplan, J, Korotkov, A, Lande, J, Lowitz, A, Maffei, B, Marnieros, S, Martino, J, Masi, S, Mcculloch, M, Melhuish, S, Mennella, A, Montier, L, Murphy, A, Néel, D, Ng, M, O’Sullivan, C, Pajot, F, Passerini, A, Perbost, C, Piacentini, F, Piat, M, Piccirillo, L, Pisano, G, Prêle, D, Rambaud, D, Rigaut, O, Salatino, M, Schillaci, A, Scully, S, Stolpovskiy, M, Timbie, P, Tucker, G, Viganò, D, Voisin, F, Watson, B, and Zannoni, M
Subjects: Fizeau interferometer, Cosmic microwave background, Context (language use), 01 natural sciences, law.invention, FIS/05 - ASTRONOMIA E ASTROFISICA, Optics, law, Atomic and Molecular Physics, 0103 physical sciences, General Materials Science, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], 010306 general physics, 010303 astronomy & astrophysics, Polarisation, [PHYS]Physics [physics], Physics, B-mode, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Materials Science (all), business.industry, Emphasis (telecommunications), Bolometer, Interferometry, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], and Optics, Cosmic microwave background · Polarisation · B-mode, business, Multipole expansion, Sensitivity (electronics)
Abstract: Q and U Bolometric Interferometer for Cosmology (QUBIC) is a Fizeau interferometer sensitive to linear polarisation, to be deployed at the Antarctic station of Dome C. This experiment in its final configuration will be operated at 97, 150 and 220GHz and is intended to target CMB primordial B-modes in a multipole window 20 < ℓ< 150. A sensitivity of r= 0.05 (95% CL) can be reached by the first module alone, after 2years of operation. Here we review in particular its working principles, and we show how the QUBIC interferometric configuration can be considered equivalent to a pupil-plane filtered imaging system. In this context, we show how our instrument can be self-calibrated. Finally, we conclude by showing an overview of the first dual-band module (150/220GHz), which will serve also as a demonstrator for the subsequent units, and review the technological choices we made for each subsystem, with particular emphasis on the detection system.
Published: 2016

11. Higher harmonics induced by a submerged horizontal plate and a submerged rectangular step in a wave flume

Author: Gaële Perret, A. Diedhiou, L. Blonce, and J. Brossard
Subjects: Physics::Fluid Dynamics, Flume, Resistive touchscreen, Wavelength, Environmental Engineering, Materials science, Harmonics, Breakwater, Energy transfer, Acoustics, Ocean Engineering, Wave transmission, Monochromatic electromagnetic plane wave
Abstract: The decomposition of a monochromatic wave over a submerged plate is investigated experimentally in a wave flume. Bound and free higher harmonic modes propagating upstream and downstream the structure are discriminated by means of moving resistive probes. The first-order analysis shows a resonant behaviour linked to the ratio of the plate's width and the fundamental mode wavelength over the plate. The second-order analysis shows an energy transfer from the fundamental mode towards free harmonics propagating downstream the structure. This transfer is linked to the ratio of the width of the plate and the bound harmonic wavelength over the plate. We also performed experiments with a submerged step to compare the efficiency of both structures. The submerged plate is shown to be a more efficient breakwater than the step, at the first as well as the second-order.
Published: 2009

12. Performances of the Alpha-X RF gun on the PHIL accelerator at LAL

Author: Christelle Bruni, R. Roux, S. Chancé, Gang Xu, J.N. Cayla, J. Brossard, T. Vinatier, H. Monard, V. Chaumat, PHIL-Dept. Accelerateurs, Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire d'Etudes des Eléments Légers (LEEL - UMR 3685), Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M) (NIMBE UMR 3685), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), DEPACC, Alpha-X, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Electron beam, Nuclear and High Energy Physics, Beam dynamics, business.industry, RF-gun, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], Solenoid, 7. Clean energy, Nuclear physics, Transverse plane, Optics, Magnet, Cathode ray, Photocathodes, Physics::Accelerator Physics, Thermal emittance, Coaxial, Schottky effect, business, Instrumentation, Beam (structure), Electron gun
Abstract: International audience; The Alpha-X RF-gun was designed to produce an ultra-short (
Published: 2015

13. Dual-reflector compact range modelling: geometrical theory of diffraction analysis and sub-millimetre quiet-zone computation

Author: J. Brossard, D. Dubruel, P H Nielsen, and B. Buralli
Subjects: Physics, Surface (mathematics), Wavelength, Optics, Geometrical optics, business.industry, Computation, Millimeter, Reflector (antenna), Physical optics, business, Atomic and Molecular Physics, and Optics, Dual (category theory)
Abstract: The growing need to study large antennas at high frequencies (ν > 100 GHz) in compact range devices requires the use of methods adapted to electrically large systems, and offering reasonable computing time. The uniform geometrical theory of diffraction (GTD) is used for dual-reflector compact range analysis. This method is compared with standard physical optics, which have been validated by measurements. At 10 GHz, the differences between the methods are very small and the time needed for a compact range analysis is less than 3 h. We have shown that a modelling of a large compact range operating at millimetre and sub-millimetre wavelength is possible using the GTD which offers the advantage of being frequency independent. The problem of surface accuracy which has a major impact at high frequencies will be treated briefly.
Published: 2003

14. SuperB Progress Reports -- Detector

Author: M. Baszczyk, P. Dorosz, J. Kolodziej, W. Kucewicz, M. Sapor, A. Jeremie, E. Grauges Pous, G. E. Bruno, G. De Robertis, D. Diacono, G. Donvito, P. Fusco, F. Gargano, F. Giordano, F. Loddo, F. Loparco, G. P. Maggi, V. Manzari, M. N. Mazziotta, E. Nappi, A. Palano, B. Santeramo, I. Sgura, L. Silvestris, V. Spinoso, G. Eigen, J. Zalieckas, Z. Zhu, L. Jenkovszky, G. Balbi, M. Boldini, D. Bonacorsi, V. Cafaro, I. D'Antone, G. M. Dallavalle, R. Di Sipio, F. Fabbri, L. Fabbri, A. Gabrielli, D. Galli, P. Giacomelli, V. Giordano, F. M. Giorgi, C. Grandi, I. Lax, S. Lo Meo, U. Marconi, A. Montanari, G. Pellegrini, M. Piccinini, T. Rovelli, N. Semprini Cesari, G. Torromeo, N. Tosi, R. Travaglini, V. M. Vagnoni, S. Valentinetti, M. Villa, A. Zoccoli, J. F. Caron, C. Hearty, P. F. T. Lu, T. S. Mattison, J. A. McKenna, R. Y. C. So, M. Y.u. Barnyakov, V. E. Blinov, A. A. Botov, V. P. Druzhinin, V. B. Golubev, S. A. Kononov, E. A. Kravchenko, E. B. Levichev, A. P. Onuchin, S. I. Serednyakov, D. A. Shtol, Y. I. Skovpen, E. P. Solodov, A. Cardini, M. Carpinelli, D. S. T. Chao, C. H. Cheng, D. A. Doll, B. Echenard, K. Flood, J. Hanson, D. G. Hitlin, P. Ongmongkolkul, F. C. Porter, R. Y. Zhu, N. Randazzo, E. De La Cruz Burelo, Y. Zheng, P. Campos, M. De Silva, A. Kathirgamaraju, B. Meadows, B. Pushpawela, Y. Shi, M. Sokoloff, G. Lopez Castro, V. Ciaschini, P. Franchini, F. Giacomini, A. Paolini, G. A. Calderon Polania, S. Laczek, P. Romanowicz, B. Szybinski, M. Czuchry, L. Flis, D. Harezlak, J. Kocot, M. Radecki, M. Sterzel, T. Szepieniec, T. Szymocha, P. Wójcik, M. Andreotti, W. Baldini, R. Calabrese, V. Carassiti, G. Cibinetto, A. Cotta Ramusino, F. Evangelisti, A. Gianoli, E. Luppi, R. Malaguti, M. Manzali, M. Melchiorri, M. Munerato, C. Padoan, V. Santoro, L. Tomassetti, M. M. Beretta, M. Biagini, M. Boscolo, E. Capitolo, R. de Sangro, M. Esposito, G. Felici, G. Finocchiaro, M. Gatta, C. Gatti, S. Guiducci, S. Lauciani, P. Patteri, I. Peruzzi, M. Piccolo, P. Raimondi, M. Rama, C. Sanelli, S. Tomassini, P. Fabbricatore, D. Delepine, M. A. Reyes Santos, M. Chrzaszcz, R. Grzymkowski, P. Knap, J. Kotula, T. Lesiak, J. Ludwin, J. Michalowski, B. Pawlik, B. Rachwal, M. Stodulski, J. Wiechczynski, M. Witek, L. Zawiejski, M. Zdybal, V. Y. Aushev, A. Ustynov, N. Arnaud, P. Bambade, C. Beigbeder, F. Bogard, M. Borsato, D. Breton, J. Brossard, L. Burmistrov, D. Charlet, V. Chaumat, O. Dadoun, M. El Berni, J. Maalmi, V. Puill, C. Rimbault, A. Stocchi, V. Tocut, A. Variola, S. Wallon, G. Wormser, F. Grancagnolo, E. Ben Haim, S. Sitt, M. Baylac, O. Bourrion, J. M. Deconto, Y. Gomez Martinez, N. Monseu, J. F. Muraz, J. S. Real, C. Vescovi, R. Cenci, A. Jawahery, D. Roberts, E. W. Twedt, R. Cheaib, D. Lindemann, S. Nderitu, P. Patel, S. H. Robertson, D. Swersky, A. Warburton, E. Cuautle Flores, G. Toledo Sanchez, P. Biassoni, L. Bombelli, M. Citterio, S. Coelli, C. Fiorini, V. Liberali, M. Monti, B. Nasri, N. Neri, F. Palombo, F. Sabatini, A. Stabile, A. Berra, A. Giachero, C. Gotti, D. Lietti, M. Maino, G. Pessina, M. Prest, J. P. Martin, M. Simard, N. Starinski, P. Taras, A. Drutskoy, S. Makarychev, A. V. Nefediev, A. Aloisio, G. De Nard, DELLA PIETRA, MASSIMO, A. Doria, GIORDANO, RAFFAELE, A. Ordine, S. Pardi, RUSSO, GUIDO, C. Sciacca, I. I. Bigi, C. P. Jessop, W. Wang, M. Bellato, M. Benettoni, M. Corvo, A. Crescente, F. Dal Corso, U. Dosselli, C. Fanin, A. Gianelle, S. Longo, M. Michelotto, F. Montecassiano, M. Morandin, R. Pengo, M. Posocco, M. Rotondo, G. Simi, R. Stroili, L. Gaioni, A. Manazza, M. Manghisoni, L. Ratti, V. Re, G. Traversi, S. Zucca, S. Bizzaglia, M. Bizzarri, C. Cecchi, S. Germani, M. Lebeau, P. Lubrano, E. Manoni, A. Papi, A. Rossi, G. Scolieri, G. Batignani, S. Bettarini, G. Casarosa, A. Cervelli, A. Fella, F. Forti, M. Giorgi, L. Lilli, A. Lusiani, B. Oberhof, A. Paladino, F. Pantaleo, E. Paoloni, A. L. Perez Perez, G. Rizzo, J. Walsh, A. Fernández Téllez, G. Beck, M. Berman, A. Bevan, F. Gannaway, G. Inguglia, A. J. Martin, J. Morris, V. Bocci, M. Capodiferro, G. Chiodi, I. Dafinei, N. V. Drenska, R. Faccini, F. Ferroni, C. Gargiulo, P. Gauzzi, C. Luci, R. Lunadei, G. Martellotti, F. Pellegrino, V. Pettinacci, D. Pinci, L. Recchia, D. Ruggeri, A. Zullo, P. Camarri, R. Cardarelli, C. De Santis, A. Di Ciaccio, V. Di Felice, F. Di Palma, A. Di Simone, L. Marcelli, R. Messi, D. Moricciani, R. Sparvoli, S. Tammaro, P. Branchini, A. Budano, S. Bussino, M. Ciuchini, F. Nguyen, A. Passeri, F. Ruggieri, E. Spiriti, F. Wilson, I. Leon Monzon, J. R. Millan Almaraz, P. L. M. Podesta Lerma, D. Aston, B. Dey, A. Fisher, P. D. Jackson, D. W. G. S. Leith, S. Luitz, D. MacFarlane, M. McCulloch, S. Metcalfe, A. Novokhatski, S. Osier, R. Prepost, B. Ratcliff, J. Seeman, M. Sullivan, J. Va'vra, U. Wienands, W. Wisniewski, B. D. Altschul, M. V. Purohit, J. Baudot, I. Ripp Baudot, G. A. P. Cirrone, G. Cuttone, O. Bezshyyko, G. Dolinska, A. Soffer, F. Bianchi, F. De Mori, A. Filippi, D. Gamba, S. Marcello, M. Bomben, L. Bosisio, P. Cristaudo, L. Lanceri, B. Liberti, I. Rashevskaya, C. Stella, E. S. Vallazza, L. Vitale, G. Auriemma, C. Satriano, F. Martinez Vidal, J. Mazorra de Cos, A. Oyanguren, P. Ruiz Valls, A. Beaulieu, S. Dejong, J. Franta, M. J. Lewczuk, M. Roney, R. Sobie, CAVALIERE, SERGIO, M. Baszczyk , P. Dorosz, J. Kolodziej, W. Kucewicz, M. Sapor, A. Jeremie, E. Grauges Pous, G.E. Bruno, G. De Robertis, D. Diacono, G. Donvito, P. Fusco, F. Gargano, F. Giordano, F. Loddo, F. Loparco, G.P. Maggi, V. Manzari, M.N. Mazziotta, E. Nappi, A. Palano, B. Santeramo, I. Sgura, L. Silvestris, V. Spinoso, G. Eigen, J. Zalieckas, Z. Zhu, L. Jenkovszky, G. Balbi, M. Boldini, D. Bonacorsi, V. Cafaro, I. D'Antone, G.M. Dallavalle , R. Di Sipio, F. Fabbri, L. Fabbri, A. Gabrielli, D. Galli , P. Giacomelli, V. Giordano, F.M. Giorgi, C. Grandi, I. Lax , S. Lo Meo , U. Marconi, A. Montanari, G. Pellegrini , M. Piccinini, T. Rovelli, N. Semprini Cesari , G. Torromeo , N. Tosi , R. Travaglini, V.M. Vagnoni , S. Valentinetti, M. Villa, A. Zoccoli , J. -F. Caron , C. Hearty, P. F. -T. Lu, T.S. Mattison, J.A. McKenna, R. Y. -C. So , M. Yu. Barnyakov, V.E. Blinov, A.A. Botov, V.P. Druzhinin, V.B. Golubev, S.A. Kononov, E.A. Kravchenko, E.B. Levichev, A.P. Onuchin, S.I. Serednyakov, D.A. Shtol, M., Baszczyk, P., Dorosz, J., Kolodziej, W., Kucewicz, M., Sapor, A., Jeremie, E., Grauges Pou, G. E., Bruno, G., De Roberti, D., Diacono, G., Donvito, P., Fusco, F., Gargano, F., Giordano, F., Loddo, F., Loparco, G. P., Maggi, V., Manzari, M. N., Mazziotta, E., Nappi, A., Palano, B., Santeramo, I., Sgura, L., Silvestri, V., Spinoso, G., Eigen, J., Zaliecka, Z., Zhu, L., Jenkovszky, G., Balbi, M., Boldini, D., Bonacorsi, V., Cafaro, I., D'Antone, G. M., Dallavalle, R., Di Sipio, F., Fabbri, L., Fabbri, A., Gabrielli, D., Galli, P., Giacomelli, V., Giordano, F. M., Giorgi, C., Grandi, I., Lax, S., Lo Meo, U., Marconi, A., Montanari, G., Pellegrini, M., Piccinini, T., Rovelli, N., Semprini Cesari, G., Torromeo, N., Tosi, R., Travaglini, V. M., Vagnoni, S., Valentinetti, M., Villa, A., Zoccoli, J. F., Caron, C., Hearty, P. F. T., Lu, T. S., Mattison, J. A., Mckenna, R. Y. C., So, Barnyakov, M. Y. u., V. E., Blinov, A. A., Botov, V. P., Druzhinin, V. B., Golubev, S. A., Kononov, E. A., Kravchenko, E. B., Levichev, A. P., Onuchin, S. I., Serednyakov, D. A., Shtol, Y. I., Skovpen, E. P., Solodov, A., Cardini, M., Carpinelli, D. S. T., Chao, C. H., Cheng, D. A., Doll, B., Echenard, K., Flood, J., Hanson, D. G., Hitlin, P., Ongmongkolkul, F. C., Porter, R. Y., Zhu, N., Randazzo, E., De La Cruz Burelo, Y., Zheng, P., Campo, M., De Silva, A., Kathirgamaraju, B., Meadow, B., Pushpawela, Y., Shi, M., Sokoloff, G., Lopez Castro, V., Ciaschini, P., Franchini, F., Giacomini, A., Paolini, G. A., Calderon Polania, S., Laczek, P., Romanowicz, B., Szybinski, M., Czuchry, L., Fli, D., Harezlak, J., Kocot, M., Radecki, M., Sterzel, T., Szepieniec, T., Szymocha, P., Wójcik, M., Andreotti, W., Baldini, R., Calabrese, V., Carassiti, G., Cibinetto, A., Cotta Ramusino, F., Evangelisti, A., Gianoli, E., Luppi, R., Malaguti, M., Manzali, M., Melchiorri, M., Munerato, C., Padoan, V., Santoro, L., Tomassetti, M. M., Beretta, M., Biagini, M., Boscolo, E., Capitolo, R., de Sangro, M., Esposito, G., Felici, G., Finocchiaro, M., Gatta, C., Gatti, S., Guiducci, S., Lauciani, P., Patteri, I., Peruzzi, M., Piccolo, P., Raimondi, M., Rama, C., Sanelli, S., Tomassini, P., Fabbricatore, D., Delepine, M. A., Reyes Santo, M., Chrzaszcz, R., Grzymkowski, P., Knap, J., Kotula, T., Lesiak, J., Ludwin, J., Michalowski, B., Pawlik, B., Rachwal, M., Stodulski, J., Wiechczynski, M., Witek, L., Zawiejski, M., Zdybal, V. Y., Aushev, A., Ustynov, N., Arnaud, P., Bambade, C., Beigbeder, F., Bogard, M., Borsato, D., Breton, J., Brossard, L., Burmistrov, D., Charlet, V., Chaumat, O., Dadoun, M., El Berni, J., Maalmi, V., Puill, C., Rimbault, A., Stocchi, V., Tocut, A., Variola, S., Wallon, G., Wormser, F., Grancagnolo, E., Ben Haim, S., Sitt, M., Baylac, O., Bourrion, J. M., Deconto, Y., Gomez Martinez, N., Monseu, J. F., Muraz, J. S., Real, C., Vescovi, R., Cenci, A., Jawahery, D., Robert, E. W., Twedt, R., Cheaib, D., Lindemann, S., Nderitu, P., Patel, S. H., Robertson, D., Swersky, A., Warburton, E., Cuautle Flore, G., Toledo Sanchez, P., Biassoni, L., Bombelli, M., Citterio, S., Coelli, C., Fiorini, V., Liberali, M., Monti, B., Nasri, N., Neri, F., Palombo, F., Sabatini, A., Stabile, A., Berra, A., Giachero, C., Gotti, D., Lietti, M., Maino, G., Pessina, M., Prest, J. P., Martin, M., Simard, N., Starinski, P., Tara, A., Drutskoy, S., Makarychev, A. V., Nefediev, A., Aloisio, Cavaliere, Sergio, G., De Nard, DELLA PIETRA, Massimo, A., Doria, Giordano, Raffaele, A., Ordine, S., Pardi, Russo, Guido, C., Sciacca, I. I., Bigi, C. P., Jessop, W., Wang, M., Bellato, M., Benettoni, M., Corvo, A., Crescente, F., Dal Corso, U., Dosselli, C., Fanin, A., Gianelle, S., Longo, M., Michelotto, F., Montecassiano, M., Morandin, R., Pengo, M., Posocco, M., Rotondo, G., Simi, R., Stroili, L., Gaioni, A., Manazza, M., Manghisoni, L., Ratti, V., Re, G., Traversi, S., Zucca, S., Bizzaglia, M., Bizzarri, C., Cecchi, S., Germani, M., Lebeau, P., Lubrano, E., Manoni, A., Papi, A., Rossi, G., Scolieri, G., Batignani, S., Bettarini, G., Casarosa, A., Cervelli, A., Fella, F., Forti, M., Giorgi, L., Lilli, A., Lusiani, B., Oberhof, A., Paladino, F., Pantaleo, E., Paoloni, A. L., Perez Perez, G., Rizzo, J., Walsh, A., Fernández Téllez, G., Beck, M., Berman, A., Bevan, F., Gannaway, G., Inguglia, A. J., Martin, J., Morri, V., Bocci, M., Capodiferro, G., Chiodi, I., Dafinei, N. V., Drenska, R., Faccini, F., Ferroni, C., Gargiulo, P., Gauzzi, C., Luci, R., Lunadei, G., Martellotti, F., Pellegrino, V., Pettinacci, D., Pinci, L., Recchia, D., Ruggeri, A., Zullo, P., Camarri, R., Cardarelli, C., De Santi, A., Di Ciaccio, V., Di Felice, F., Di Palma, A., Di Simone, L., Marcelli, R., Messi, D., Moricciani, R., Sparvoli, S., Tammaro, P., Branchini, A., Budano, S., Bussino, M., Ciuchini, F., Nguyen, A., Passeri, F., Ruggieri, E., Spiriti, F., Wilson, I., Leon Monzon, J. R., Millan Almaraz, P. L. M., Podesta Lerma, D., Aston, B., Dey, A., Fisher, P. D., Jackson, D. W. G. S., Leith, S., Luitz, D., Macfarlane, M., Mcculloch, S., Metcalfe, A., Novokhatski, S., Osier, R., Prepost, B., Ratcliff, J., Seeman, M., Sullivan, J., Va'Vra, U., Wienand, W., Wisniewski, B. D., Altschul, M. V., Purohit, J., Baudot, I., Ripp Baudot, G. A. P., Cirrone, G., Cuttone, O., Bezshyyko, G., Dolinska, A., Soffer, F., Bianchi, F., De Mori, A., Filippi, D., Gamba, S., Marcello, M., Bomben, L., Bosisio, P., Cristaudo, L., Lanceri, B., Liberti, I., Rashevskaya, C., Stella, E. S., Vallazza, L., Vitale, G., Auriemma, C., Satriano, F., Martinez Vidal, J., Mazorra de Co, A., Oyanguren, P., Ruiz Vall, A., Beaulieu, S., Dejong, J., Franta, M. J., Lewczuk, M., Roney, R., Sobie, Universitat Autònoma de Barcelona (UAB), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratori Nazionali di Frascati (LNF), Istituto Nazionale di Fisica Nucleare (INFN), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), SLAC National Accelerator Laboratory (SLAC), Stanford University, SuperB, and Starita, Sabine
Subjects: [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.PHYS.PHYS-INS-DET] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]
Abstract: 95 pages, 48 pdf figures; This report describes the present status of the detector design for SuperB. It is one of four separate progress reports that, taken collectively, describe progress made on the SuperB Project since the publication of the SuperB Conceptual Design Report in 2007 and the Proceedings of SuperB Workshop VI in Valencia in 2008. The other three reports relate to Physics, Accelerator and Computing.
Published: 2010

15. Experimental investigation of the harmonic generation by waves over a submerged plate

Author: Mohamed Chagdali and J. Brossard
Subjects: Physics, Environmental Engineering, Gravitational wave, business.industry, Ocean Engineering, Mechanics, Dissipation, Physics::Fluid Dynamics, symbols.namesake, Optics, Harmonics, Free surface, Fluid–structure interaction, symbols, Reflection (physics), High harmonic generation, business, Doppler effect
Abstract: Experiments in a wave flume have been performed to analyse the nonlinear interaction between regular gravity waves and a submerged horizontal plate used as breakwater. A new method, based on the Doppler shift generated by a moving probes, has been used to discriminate the incident fundamental mode and the reflected fundamental mode. The relationships of the reflection and transmission coefficients to the wave number at different submergence depth ratios are presented. The accurate discrimination, by this method, of the phase-locked and free modes allows the quantification of the higher harmonics generated by the breakwater and the analysis of the nonlinear interaction between the waves and the submerged plate. The transfer of energy from the fundamental mode to higher harmonics is very large in the cases of small submergence depth ratios. The vortices produced at the edges take part in the production of higher harmonics by interaction with the free surface but involve, at the same time, a dissipation process that increases the efficiency of the breakwater.
Published: 2001

16. Quasi universal blast wave behavior

Author: J. Brossard, C. Vaglio, S. Sénégas, and R. Cayzac
Subjects: Shock wave, Physics, Simple (abstract algebra), Diagram, General Physics and Astronomy, Near and far field, Function (mathematics), Mechanics, Blast wave, Similitude, Overpressure
Abstract: The two major parameters of shock wave propagation in free air are the space-time diagram and the decay of the peak overpressure as a function of the radial distance. This paper proposes a very simple mathematical function which simulates the space-time diagram and then correlates the peak overpressure. Various applications are presented that validate the proposed functions. In the far field, the asymptotic behaviour is consistent with the physical phenomenon and the similitude laws are preserved. In this manner, the quasi-universal behaviour of shock wave propagation in free air is demonstrated. Very easy-to-use, the proposed functions appear as quasi-universal ones.
Published: 2000

17. Experimental investigation on the detonability of non-uniform gaseous mixtures

Author: T. Lamy, Isabelle Sochet, J. Brossard, Laboratoire pluridisciplinaire de recherche en ingénierie des systèmes, mécanique et énergétique (PRISME), Université d'Orléans (UO)-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)
Subjects: Physics, 020301 aerospace & aeronautics, Molecular diffusion, Hydrogen, Turbulence, [SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment, Mechanical Engineering, General Physics and Astronomy, chemistry.chemical_element, Charge (physics), 02 engineering and technology, Radius, 01 natural sciences, 010305 fluids & plasmas, chemistry.chemical_compound, Classical mechanics, 0203 mechanical engineering, chemistry, Volume (thermodynamics), Propane, 0103 physical sciences, Atomic physics, Dispersion (chemistry), ComputingMilieux_MISCELLANEOUS, Astrophysics::Galaxy Astrophysics
Abstract: An experimental investigation is performed to characterize the detonability of small gaseous clouds with a concentration gradient. Two types of gaseous mixtures are used: (i) a heavy gas ${\rm C}_{3}{\rm H}_{8}/{\rm O}_{2}$ (equivalence ratio $\phi$ : $0.70 \leq \phi \leq 1.66 $ ); (ii) a light gas ${\rm H}_{2}/{\rm O}_{2}$ $\left (0.50 \leq \phi \leq 1.25 \right)$ . The mixtures are initially confined in a hemispherical volume which is characterized by an initial radius $R_{0}=0.04\div 0.08$ m. When the confining is ruptured, the gaseous mixture diffuses into the surrounding air. The concentration distribution is a result of molecular diffusion, gravity and turbulence. Schlieren chronophotographies enable the illustration of the dispersion of the cloud. By means of pressure profiles of blast waves generated by the explosion, the limit between the two explosion phenomena (total and partial explosive charge) is defined. The limit time delay, which leads to a given concentration distribution and for which detonations cannot be observed, is investigated with respect to initial gaseous composition and initial volume of confining. The critical nominal initiation energies in uniform and non-uniform media are characterized.
Published: 2000

18. Direct initiation of gaseous detonation : the Jungle

Author: Isabelle Sochet and J. Brossard
Subjects: Diffraction, Physics, Theoretical physics, Planar, Explosive material, Wave propagation, Point source, Astrophysics::High Energy Astrophysical Phenomena, Detonation, General Physics and Astronomy, Mechanics, Combustion, Phenomenology (particle physics)
Abstract: A general assessment of the state of the art regarding direct initiation modes for successful cylindrical or spherical detonations in uniform gaseous media is presented. Energy is recognized as being the most appropriate parameter to be used as a relative measure of the sensitivity to detonation of any given explosive mixture. A spherical detonation wave can be initiated either by a point source or a confined planar detonation wave transmission at the open end of a tube into an unconfined environment. Consequently, the critical conditions characterizing the amount of initial energy required to create the detonation are, respectively, the initiation radius for a point source and the critical tube diameter for a diffraction. The description of the phenomenology of critical conditions for gaseous detonation is proposed through notions having been diversely expressed by different authors. Nevertheless, these notions differ as far as their formulation and their analysis of the concepts proposed is concerned. It's a real jungle!. So, this is why it is important to provide some information on the current state of the art regarding the initiation modes for cylindrical or spherical detonations.
Published: 2000

19. The kerosene explosibility: modelling and application to safety systems

Author: J.M. Pascaud, D. Valeze, and J. Brossard
Subjects: Kerosene, Work (thermodynamics), Energy transfer, Thermodynamics, System safety, Mechanics, Condensed Matter Physics, Combustion, Electronic, Optical and Magnetic Materials, law.invention, Ignition system, law, Thermal, Environmental science, Instrumentation, Body orifice
Abstract: The aim of this work is to study the kerosene explosibility in closed or vented vessels and to develop an application to safety systems. The basic characteristics of the model have been developed for the ignition and the combustion of propulsive powders and adapted to liquid fuels with appropriate parameters linked to simplified kinetics. A simple representation of the combustion phenomena based on energy transfers and the action of specific molecular species is presented. The pressure venting, due to the vent breaking is calculated taking into account the mass rate of discharge of the different products in the assumption of the standard orifice equations. The model allows the study of various parameters such as the nature of the kerosene, the fuel ratio of the mixture, the ignition energy, the thermal exchanges and the influence of the pressure venting or the vent area. The theoretical results have been compared with data obtained in the course of experiments performed in small vessel volumes ( V 0 = 13 and 33 l) and indicate correct preliminary tendencies.
Published: 2000

20. Improved analysis of regular gravity waves and coefficient of reflexion using one or two moving probes

Author: A. Hémon, E. Rivoalen, and J. Brossard
Subjects: Physics, Environmental Engineering, Angular frequency, business.industry, Phase (waves), Ocean Engineering, Physics::Fluid Dynamics, symbols.namesake, Amplitude, Optics, Surface wave, Free surface, symbols, Wavenumber, Gravity wave, business, Doppler effect
Abstract: This paper describes a complete spatio-temporal measurement of a set of regular waves propagating in a flume or a towing tank. This analysis is obtained by Doppler effect using the displacement of one or two moving free surface probes. The Doppler shift allows the separation of all the modes of the wave (incident, reflected, free and phase locked modes). This measurement includes for each mode the amplitude, the angular frequency, the wavenumber and the reflexion coefficients; only a one-point probe moving at a constant speed is required. A highly accurate method is also described, using two one-point probes moving at the same speed but in opposite directions. The use of the one-probe method for a towing tank, where the platform transmits the motion, is straightforward. The two-probes method has a great interest for coastal engineering laboratory measurements.
Published: 2000

21. Numerical simulation by the molecular collision theory of two-phase mixture explosion characteristics in closed or vented vessels

Author: J. Brossard, J.M. Pascaud, and J. M. Lombard
Subjects: Work (thermodynamics), Computer simulation, Thermodynamics, Condensed Matter Physics, Combustion, Methane, Electronic, Optical and Magnetic Materials, Liquid fuel, law.invention, Ignition system, chemistry.chemical_compound, chemistry, Volume (thermodynamics), law, Physics::Chemical Physics, Instrumentation, Body orifice
Abstract: The aim of this work consists in presenting a simple modelling (the molecular collision theory), easily usable in an industrial environment in order to predict the evolution of thermodynamical characteristics of the combustion of two-phase mixtures in a closed or a vented vessel. Basic characteristics of the modelling have been developed for ignition and combustion of propulsive powders and adapted with appropriate parameters linked to simplified kinetics. A simple representation of the combustion phenomena based on energy transfers and the action of specific molecules is presented. The model is generalized to various mixtures such as dust suspensions, liquid fuel drops and hybrid mixtures composed of dust and a gaseous supply such as methane or propane in the general case of vented explosions. The pressure venting due to the vent breaking is calculated from thermodynamical characteristics given by the model and taking into account, the mass rate of discharge of the different products deduced from the standard orifice equations. The application conditions determine the fuel ratio of the used mixtures, the nature of the chemical kinetics and the calculation of a universal set of parameters. The model allows to study the influence of the fuel concentration and the supply of gaseous additives, the influence of the vessel volume (2400l ≤ V b ≤ 250 000l) and the influence of the venting pressure or the vent area. The first results have been compared with various experimental works available for two phase mixtures and indicate quite correct predictions.
Published: 1999

22. Predictive Method of Pressure Venting for Dust Explosions in Large Vessels

Author: J. M. Pascaud and J. Brossard
Subjects: Work (thermodynamics), General Chemical Engineering, General Physics and Astronomy, Energy Engineering and Power Technology, General Chemistry, Mechanics, USable, Combustion, Action (physics), Fuel Technology, Range (aeronautics), Environmental science, Representation (mathematics), Dust explosion, Body orifice
Abstract: A simple modelling easily usable in the industrial environment has been previously described in order to predict the evolution of the combustion characteristics of solid-gas mixtures in a closed vessel. The aim of this work consists in extending the model development to a wide range of dust suspensions in the general case of vented explosions and to test the model behaviour to get a risk evaluation and improve safety conditions in industrial plants. A simple representation of the combustion phenomena based on energy transfers between particles and the action of specific molecules is presented. The pressure venting due to the vent breaking is calculated from thermodynamical characteristics given by the model and taking into account the mass rate of discharge of the different products deduced from the standard orifice equations. The application conditions determine the fuel ratio of the used mixtures, the nature or the chemical kinetics and the calculation of a universal set of parameters. The proposed deve...
Published: 1998

23. Predictive Method of Gas-Dust Explosion Characteristics

Author: J. Brossard and J. M. Pascaud
Subjects: Work (thermodynamics), General Chemical Engineering, Energy transfer, General Physics and Astronomy, Energy Engineering and Power Technology, Thermodynamics, General Chemistry, Mechanics, USable, Combustion, Methane, chemistry.chemical_compound, Fuel Technology, chemistry, Propane, Physics::Chemical Physics, Representation (mathematics), Dust explosion
Abstract: The aim of this work consists in presenting a simple modelling easily usable in the industrial environment in order to predict the evolution of thermodynamical characrteristics of the combustion of solid-gas mixtures in a closed vessel. In fact, very few studies have been interested in the association of agricultural dusts with a gaseous energetic fuel (propane or methane) despite many dramatic consequences. Basic characteristics of modelling have been previously described to study cornstarch dust-air mixtures. A simple representation of the combustion phenomena based on energy transfers between particles and the action of specific molecules is given. The modelling adaptation to diphasic mixtures is carried out studying the fluctuations of the model parameters. The application conditions determine the fuel ratio of the used mixtures the adaptation of the chemical kinetics to the considered case and the calculation of the model parameters. The proposed development shows the model representativenes...
Published: 1996

24. Optimal Converse of the Pointwise Fatou Theorem

Author: J. Brossard and L. Chevalier
Subjects: Pointwise, Discrete mathematics, Mathematics::Functional Analysis, Mathematics(all), Fatou's lemma, General Mathematics, Converse theorem, Converse, Mathematics
Abstract: We obtain general and sharp results about the converse of the pointwise Fatou theorem, by using a new tauberian condition which we prove to be optimal.
Published: 1995
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25. Generation of stationary Gaussian processes and extreme value distributions for high-cycle fatigue models - application to tidal stream Turbines

Author: J. E. Souza de Cursi, M. Suptille, Leila Khalij, Emmanuel Pagnacco, J. Brossard, Laboratoire de Mécanique de Normandie (LMN), Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Normandie Université (NU), Normandie Université (NU), Laboratoire Ondes et Milieux Complexes (LOMC), Centre National de la Recherche Scientifique (CNRS)-Université Le Havre Normandie (ULH), and Normandie Université (NU)-Normandie Université (NU)
Subjects: 0209 industrial biotechnology, Engineering, Flow (psychology), Aerospace Engineering, Multivariate normal distribution, 02 engineering and technology, Industrial and Manufacturing Engineering, symbols.namesake, [SPI]Engineering Sciences [physics], 020901 industrial engineering & automation, 0203 mechanical engineering, Statistics, high cycle fatigue, Statistical physics, Extreme value theory, Gaussian process, Computer simulation, Turbulence, business.industry, Mechanical Engineering, Applied Mathematics, General Engineering, White noise, stochastic processes generation, 020303 mechanical engineering & transports, Automotive Engineering, symbols, Generalized extreme value distribution, correlated Gaussian processes, business, multivariate extreme value distribution, tidal stream turbines
Abstract: International audience; The operating environment of tidal stream turbines is random due to the variability of the sea flow (turbulence, wake, tide, streams, among others). This yields complex time-varying random loadings, making it necessary to deal with high cycle multiaxial fatigue when designing such structures. It is thus required to apprehend extreme value distributions of stress states, assuming they are stationary multivariate Gaussian processes. This work focus on such distributions, addressing their numerical simulation with an analytical description. For that, we first focused on generating one-dimensional Gaussian processes, considering a band-limited white noise in both the narrow-band and the wide-band cases. We then fitted the resulting extreme value distributions with GEV distributions. We secondly extended the generation method to the correlated two-dimensional case, in which the joint extreme value distribution can be obtained from the associated margins. Finally, an example of application related to tidal stream turbines introduces a Bretschneider spectrum, whose shape is commonly encountered in the field of hydrology. Comparing the empirical calculations with the GEV fits for the extreme value distributions shows a very well agreement between the results.
Published: 2012

26. Distributions de la contrainte équivalente de cisaillement pour la fiabilité des structures soumises à un environnement aléatoire

Author: J. Brossard, M. Suptille, Leila Khalij, E. Souza de Cursi, Emmanuel Pagnacco, Laboratoire Ondes et Milieux Complexes (LOMC), Centre National de la Recherche Scientifique (CNRS)-Université Le Havre Normandie (ULH), and Normandie Université (NU)-Normandie Université (NU)
Subjects: [SPI]Engineering Sciences [physics], 020303 mechanical engineering & transports, 0203 mechanical engineering, General Materials Science, 02 engineering and technology, 021001 nanoscience & nanotechnology, 0210 nano-technology, 16. Peace & justice, ComputingMilieux_MISCELLANEOUS
Abstract: Nous nous interessons a la contrainte equivalente de cisaillement ainsi qu’a sa distribution en presence de sollicitations aleatoires stationnaires et Gaussiennes. Trois propositions issues de la litterature pour l’estimation de cette contrainte sont etudiees dans ce travail. La confrontation de ces distributions a celles des parametres materiaux peut permettre de conclure sur la fiabilite des structures dans des approches globales de fatigue comme, par exemple, le critere de Sines.
Published: 2012

27. Genetic analysis of inherited bone marrow failure syndromes from one prospective, comprehensive and population-based cohort and identification of novel mutations

Author: Uma H. Athale, Lawrence Jardine, Jeffrey H. Lipton, E Shereck, Robert J. Klaassen, Rochelle Yanofsky, Kaiser Ali, M. Silva, Elena Tsangaris, C Allen, Joseph Beyene, Manuel Carcao, Isaac Odame, Sharon Abish, J. Brossard, Conrad V. Fernandez, MacGregor Steele, C M Roifman, J.P. Hand, Nancy A. Dower, Yigal Dror, Bruno Michon, P Canning, and J Champagne
Subjects: Ribosomal Proteins, Pediatrics, medicine.medical_specialty, Population, Hemoglobinuria, Paroxysmal, Cohort Studies, 03 medical and health sciences, 0302 clinical medicine, FANCG, Genetics, medicine, Humans, Lipomatosis, Genetic Testing, Prospective Studies, Prospective cohort study, education, Genotyping, Bone Marrow Diseases, Genetics (clinical), Alleles, 030304 developmental biology, Genetic testing, Anemia, Diamond-Blackfan, 0303 health sciences, Shwachman–Diamond syndrome, education.field_of_study, medicine.diagnostic_test, Fanconi Anemia Complementation Group A Protein, Genetic heterogeneity, business.industry, Anemia, Aplastic, Proteins, Bone Marrow Failure Disorders, medicine.disease, FANCA, Shwachman-Diamond Syndrome, 3. Good health, Fanconi Anemia, 030220 oncology & carcinogenesis, Mutation, Exocrine Pancreatic Insufficiency, business
Abstract: Introduction Inherited bone marrow failure syndromes (IBMFSs) often have substantial phenotypic overlap, thus genotyping is often critical for establishing a diagnosis. Objectives and methods To determine the genetic characteristics and mutation profiles of IBMFSs, a comprehensive population-based study that prospectively enrols all typical and atypical cases without bias is required. The Canadian Inherited Marrow Failure Study is such a study, and was used to extract clinical and genetic information for patients enrolled up to May 2010. Results Among the 259 primary patients with IBMFS enrolled in the study, the most prevalent categories were DiamondeBlackfan anaemia (44 patients), Fanconi anaemia (39) and ShwachmaneDiamond syndrome (35). The estimated incidence of the primary IBMFSs was 64.5 per 10 6 births, with Fanconi anaemia having the highest incidence (11.4 cases per 10 6 births). A large number of patients (70) had haematological and non-haematological features that did not fulfil the diagnostic criteria of any specific IBMFS category. Disease-causing mutations were identified in 53.5% of the 142 patients tested, and in 16 different genes. Ten novel mutations in SBDS, RPL5, FANCA, FANCG, MPL and G6PT were identified. The most common mutations were nonsense (31 alleles) and splice site (28). Genetic heterogeneity of most IBMFSs was evident; however, the most commonly mutated gene was SBDS ,f ollowed byFANCA and RPS19. Conclusion From this the largest published comprehensive cohort of IBMFSs, it can be concluded that recent advances have led to successful genotyping of about half of the patients. Establishing a genetic diagnosis is still challenging and there is a critical need to develop novel diagnostic tools.
Published: 2011

28. Planck pre-launch status: HFI beam expectations from the optical optimisation of the focal plane

Author: Andrew E. Lange, F. Pajot, T. Peacocke, J.-L. Puget, J.-M. Lamarre, V. Yurchenko, I. Ristorcelli, F. R. Bouchet, Y. Longval, Peter A. R. Ade, I. McAuley, R. Colgan, C. V. Haynes, Giorgio Savini, A. Catalano, W. C. Jones, J. A. Murphy, R. Gispert, J. Brossard, Rashmikant V. Sudiwala, Richard Wylde, F. Noviello, Emily Gleeson, Bruno Maffei, Giampaolo Pisano, Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), APC - Cosmologie, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), PLANCK, PLANCK-HFI, Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Paris (ENS Paris), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), École normale supérieure - Paris (ENS Paris)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université de Cergy Pontoise (UCP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Physique Corpusculaire et Cosmologie - Collège de France (PCC), and Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF)-Centre National de la Recherche Scientifique (CNRS)
Subjects: cosmic microwave background, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Experimental Physics, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics::High Energy Astrophysical Phenomena, Cosmic microwave background, Cosmic background radiation, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, law.invention, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 010309 optics, Telescope, symbols.namesake, Optics, law, 0103 physical sciences, space vehicles: instruments, Planck, 010303 astronomy & astrophysics, QB, Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], instrumentation: detectors, business.industry, Astrophysics::Instrumentation and Methods for Astrophysics, instrumentation: polarimeters, Astronomy, submillimeter: general, telescopes, Astronomy and Astrophysics, Polarization (waves), [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Cardinal point, Space and Planetary Science, symbols, business
Abstract: Planck is a European Space Agency (ESA) satellite, launched in May 2009, which will map the cosmic microwave background anisotropies in intensity and polarisation with unprecedented detail and sensitivity. It will also provide full-sky maps of astrophysical foregrounds. An accurate knowledge of the telescope beam patterns is an essential element for a correct analysis of the acquired astrophysical data. We present a detailed description of the optical design of the High Frequency Instrument (HFI) together with some of the optical performances measured during the calibration campaigns. We report on the evolution of the knowledge of the pre-launch HFI beam patterns when coupled to ideal telescope elements, and on their significance for the HFI data analysis procedure.
Published: 2010

29. Multi-mode horn design and beam characteristics for the Planck satellite

Author: T. Peacocke, R. Sudiwala, F. Noviello, Bruno Maffei, J.-L. Puget, V. Yurchenko, J. A. Murphy, Richard Wylde, I. Ristorcelli, R. Colgan, Peter A. R. Ade, Andrew E. Lange, Giorgio Savini, Giampaolo Pisano, Y. Longval, I. McAuley, J.-M. Lamarre, Emily Gleeson, J. Brossard, Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre d'étude spatiale des rayonnements (CESR), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, PLANCK, Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), École normale supérieure - Paris (ENS-PSL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)
Subjects: Microwave Antennas, Optics, Space instrumentation, Waveguides, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Experimental Physics, Aperture, Cosmic microwave background, 02 engineering and technology, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Electromagnetic radiation, law.invention, Telescope, symbols.namesake, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Angular resolution, Planck, 010303 astronomy & astrophysics, Instrumentation, Mathematical Physics, Physics, business.industry, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, 020206 networking & telecommunications, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Horn (acoustic), symbols, business
Abstract: The ESA Planck satellite has begun studying the anisotropies of the cosmic microwave background radiation over the whole sky with unprecedented sensitivity and high angular resolution. The High Frequency Instrument, HFI, on Planck is observing simultaneously in six bands in the range 100 GHz to 857 GHz. The inclusion of non-CMB bands allows for robust removal of foreground sources from the data. This paper is concerned with the design, modeling and predicted performances of the two highest frequency channels centered on 545 GHz and 857 GHz, which use specialized multi-mode feedhorns, and are dedicated to observing these foregrounds. Multi-mode systems have the advantage of increasing the throughput, and thus sensitivity, of the detection assembly when diffraction limited resolution is not required. The horns are configured in a back-to-back setup which transmits the signal through filters to a detector horn. The modeling of the broadband beam patterns on the sky is shown to require careful analysis. Simulations of the complex interactions of the horns is computationally challenging when the detector horn in the relay system is included. The paper describes the approach to modeling these high frequency channels and discusses how the optical requirements on the horn designs are met in terms of spillover, edge taper, illumination of the telescope aperture and beam patterns on the sky.
Published: 2010

30. 4D Emittance Measurements Using Multiple Wire and Waist Scan Methods in the ATF Extraction Line

Author: Rimbault J. Brossard P. Bambade M. Del C. Alabau S. Kuroda A. Scarfe M. Woodley, C., Rimbault, Cécile, Brossard, J., Bambade, P., Del C. Alabau, M., Kuroda, S., Scarfe, A., Woodley, M., Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Instituto de Fisica Corpuscular (IFIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Universitat de València (UV), KEK (High energy accelerator research organization), SLAC National Accelerator Laboratory (SLAC), Stanford University, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], Physics::Accelerator Physics
Abstract: TUPC087; International audience; Emittance measurements performed in the diagnostic section of the ATF extraction line since 1998 lead to ver- tical emittances three times larger than the expected ones, with a strong dependence on intensity. An experimental program is pursued to investigate potential sources of emit- tance growth and ﬁnd possible remedies. This requires ef- ﬁcient and reliable emittance measurement techniques. In the past, several phase-space reconstruction methods devel- oped at SLAC and KEK have been used to estimate the ver- tical emittance, based on multiple location beam size mea- surements and dedicated quadrupole scans. These methods have been shown to be very sensitive to measurement er- rors and other ﬂuctuations in the beam conditions. In this context new emittance measurements have been performed revisiting these methods and newly developed ones with a systematic approach to compare and characterise their per- formance in the ATF extraction line.
Published: 2008

31. Design of the beam delivery system for the international linear collider

Author: Andrei Seryi, Liling Xiao, J. Brossard, Andrew Marone, Stephen Molloy, Graeme Burt, Yoshihisa Iwashita, M. del Carmen Alabau, Yusuke Suetsugu, Valery I. Telnov, V.S. Kashikhin, Eric Doyle, Thomas W. Lackowski, Christopher Clarke, Thomas W. Markiewicz, G.A. Blair, T. Peterson, Ilya Agapov, D. Warner, J. Gronberg, Philip Burrows, L. Fernandez-Hernando, V. Kuchler, A. Fasso, C. Saunders, Robert Appleby, J. Tompkins, Deepa Angal-Kalinin, J. K. Jones, Philip Bambade, Karl Bane, Wolfgang Lohmann, P. Tenenbaum, E. Torrence, O. Delferriere, Anthony Hartin, Alexandr Drozhdin, Stewart Boogert, Sergei Striganov, Mark Woodley, D. Uriot, N. Nakao, Olivier Napoly, M.C. Ross, K. Buesser, N.V. Mokhov, O. Dadoun, Alexey Kalinin, Brett Parker, P. A. McIntosh, J. Greenhalgh, Amos Dexter, Hitoshi Yamamoto, C. Beard, Glen White, Toshiya Sanami, C. Swinson, F. Asiri, K. Jonghoon, J. Carwardine, K. Ko, P. Goudket, John Amann, S. Seletskiy, A. Ferrari, S. Smith, R. Arnold, Colin Perry, Glenn Christian, H. Dabiri Khah, N. Phinney, Daniel Schulte, Tor Raubenheimer, T. Sanuki, K.C. Moffeit, Jean-Luc Baldy, N. K. Watson, J. Payet, T. Maruyama, L. Keller, Toshiaki Tauchi, J. Carter, C. Densham, T. Okugi, Michael Anerella, P. Bellomo, Dieter Walz, A. Jain, M. Wendt, Frank Jackson, B. D. Constance, Atsushi Enomoto, Yuri Nosochkov, C.M. Spencer, L. Bellantoni, X. Yang, T. S. Mattison, Lili Ma, M. Woods, Zenghai Li, and S. Kuroda
Subjects: Physics, Interaction point, International Linear Collider, Physics::Instrumentation and Detectors, Reference design, Detector, Particle accelerator, Superconducting magnet, Linear particle accelerator, law.invention, Nuclear physics, law, Electronic engineering, Physics::Accelerator Physics, Collider
Abstract: The beam delivery system for the linear collider focuses beams to nanometer sizes at its interaction point, collimates the beam halo to provide acceptable background in the detector and has a provision for state-of-the art beam instrumentation in order to reach the ILCs physics goals. This paper describes the design details and status of the baseline configuration considered for the reference design and also lists alternatives. ©2007 IEEE.
Published: 2007

32. Evaluation of luminosity reduction in the ILC head-on scheme from parasitic collisions

Author: J. Brossard, Philip Bambade, Thibault J.-Y. Derrien, Deepa Angal-Kalinin, M. Alabau, Olivier Napoly, and J. Payet
Subjects: DIMAD program, detector analysis, Acceleration, Jitter, Kink instability, electrostatic separators, kink instability, Linear particle accelerator, bunch distributions, luminosity reduction, Colliding beam accelerators, Particle separators, Apertures, Electrostatics, Linear accelerators, multibeam kink instability, long-range beam-beam forces, physics analysis, Analytical models, beam manipulations, post collision beam line, Physics, Luminosity (scattering theory), Interaction point, linear colliders, Detector, Performance analysis, interaction point, particle beam bunching, spent beam extraction, Computational physics, Bunches, particle beam extraction, ILC, Physics::Accelerator Physics, Atomic physics, particle beam stability, Beam (structure), Guinea-Pig program
Abstract: 759371 3 pp. (2007)., An interaction region with head-on collisions is being developed for the ILC as an alternative to the base line 14 mrad crossing angle design, motivated by simpler beam manipulations upstream of the interaction point (IP) and a more favourable configuration for the detector and physics analysis. The design of the post-collision beam line in this scheme involves however a number of technological challenges, one of which is the strength requirement for the electrostatic separators (ES) placed immediately after the final doublet to extract the spent beam. In this paper, we examine in detail the main mechanism behind this requirement, the multi-beam kink instability, which results from the long-range beam-beam forces at the parasitic crossings after the bunches have been extracted. Our analysis uses realistic bunch distributions, the Guinea-Pig program to treat beam-beam effects at the interaction point and the DIMAD program to track the disrupted beam distributions in the post- collision beam line.
Published: 2007

33. Technical challenges for head-on collisions and extraction at the ILC

Author: Deepa Angal-Kalinin, Yoshihisa Iwashita, M. Durante, D. Uriot, G. Sabbi, L. Keller, Philip Bambade, M.d. del Alabau, C. Rimbault, R. Appleby, J. Payet, Brennan Goddard, C. Rippon, J. Borburgh, Frank Jackson, S. Kuroda, J. Brossard, O. Dadoun, O. Delferriere, Stephan I. Tzenov, Bruno Balhan, Olivier Napoly, Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), European Organization for Nuclear Research (CERN), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), ILC, and Starita, Sabine
Subjects: Magnetic separation, Mechanical engineering, Optical collimators, Superconducting magnet, Optical beams, Collimated light, law.invention, 3D magnetic integration, Nuclear magnetic resonance, law, electrostatic separator, Electrostatics, Electrical equipment, beam extraction, Superconducting magnets, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Physics, superconducting final doublet magnets, Design engineering, linear colliders, head-on collisions, Detector, Optical design, Particle accelerator, solenoids, Integrated optics, extraction quadrupoles, Boring, particle beam extraction, ILC, [PHYS.PHYS.PHYS-INS-DET] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Magnet, Physics::Accelerator Physics, particle optics, beam separation optics, Beam (structure), accelerator magnets, final focus optics design
Abstract: 759367 3 pp. (2007)., An interaction region with head-on collisions is considered as an alternative to the baseline ILC configuration. Progress in the final focus optics design includes engineered large bore superconducting final doublet magnets and their 3D magnetic integration in the detector solenoids. Progress on the beam separation optics is based on technical designs of electrostatic separator and special extraction quadrupoles. The spent beam extraction is realized by a staged collimation scheme relying on realistic collimators.
Published: 2007

34. Corrugated waveguide band edge filters for CMB experiments in the far infrared

Author: G. Cahill, Evan N. Kirby, Créidhe O'Sullivan, E. Cartwright, Sarah E. Church, Bruno Maffei, J. A. Murphy, J. Hinderks, Emily Gleeson, W. Lanigan, and J. Brossard
Subjects: Physics, Waveguide filter, Experimental Physics, business.industry, Bandwidth (signal processing), Cosmic microwave background, Physics::Optics, Condensed Matter Physics, Waveguide (optics), Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Optics, Far infrared, Optical filter, business, High-pass filter, Microwave
Abstract: Millimetre wave corrugated waveguide-horn structures are used as both single-moded and multi-moded bolometer feeds in a number of cosmic microwave background (CMB) experiments (e.g. PLANCK, Archeops, QUaD). Such horns tend to be employed over a relatively wide bandwidth and for single-moded horns the waveguide acts as the high pass filter. In this paper we report on our investigation on how the waveguide details determine the exact location of the low frequency band edge of such corrugated horns. A sharp step-like band edge, below which there is negligible propagation, is ideally required. Furthermore any leakage below the expected cut-off, possible in corrugated guides, could lead to non-idealised cross-polar effects. Typically deeper corrugations are required in the waveguide filter than at the horn aperture for wide bandwidth operation, thus necessitating a transition section over which the corrugation depth smoothly varies. An electromagnetic mode matching technique and a surface impedance hybrid mode model are used to compute the horn transmission characteristics. We have also undertaken laboratory measurements of the band edge of prototype corrugated horns in order to test the models.
Published: 2005

35. Coastal chalk cliff erosion: experimental investigation on the role of marine factors

Author: Anne Duperret, J. Brossard, Laboratoire Ondes et Milieux Complexes (LOMC), Centre National de la Recherche Scientifique (CNRS)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU), Geological Society of London, and Duperret, Anne
Subjects: Shore, geography, geography.geographical_feature_category, 010504 meteorology & atmospheric sciences, [SDU.STU]Sciences of the Universe [physics]/Earth Sciences, 010502 geochemistry & geophysics, Geotechnical Engineering and Engineering Geology, 01 natural sciences, Wave-cut platform, Coastal erosion, Flume, [SDU.STU.AG] Sciences of the Universe [physics]/Earth Sciences/Applied geology, [SDU.STU] Sciences of the Universe [physics]/Earth Sciences, Erosion, Cliff, Fracture (geology), Geotechnical engineering, [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology, Geomorphology, [SDU.STU.AG]Sciences of the Universe [physics]/Earth Sciences/Applied geology, Geology, Channel (geography), ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences
Abstract: International audience; In this paper the marine factors of erosion contributing to the chalk cliffs located on either side of the English Channel are examined. From an analysis of the literature, the main physical phenomena determining the marine erosion of the shore platform and the foot of the cliff are considered. Field observations of the coastal chalk cliff show that the vertical erosion of the shore platform does not appear to be the main cause of cliff erosion, which is mainly governed by cliff collapse processes. To estimate the impact of waves on the base of the cliff, experiments were carried out in a wave flume. The pressure due to the waves and the dissipation of waves were measured for three simple configurations of the boundary conditions between the cliff and the sea. The pressure never exceeded the compressive strength of chalk rock. Nevertheless, pressure fluctuations due to periodic waves can induce a fatigue process within the fracture structures. The experimental results showed that the shingle by itself has a low effect on wave energy dissipation. The main effect of shingle is to reduce the water depth at the toe of the cliff. Furthermore, it is demonstrated that a lower water depth leads to a lower impact of the waves on the cliff.
Published: 2004

36. Infrared thermography study of heat transfer in an array of round jets

Author: J.-M. Buchlin, J. Brossard, and J.-B. Gouriet
Published: 2004

37. Planck-HFI focal plane concept

Author: Andrew E. Lange, John Anthony Murphy, Bruno Maffei, V. Yurchenko, Peter A. R. Ade, R. V. Sudiwala, J. Brossard, Y. Longval, Giampaolo Pisano, Jean-Loup Puget, James J. Bock, Emily Gleeson, Jean-Michel Lamarre, I. Ristorcelli, and Mather, John C.
Subjects: Physics, Corrugated feedhorns, Archeops, Bolometers, CMB experiments, Cold optics, business.industry, Detector, Cosmic microwave background, Bolometer, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Polarization (waves), law.invention, symbols.namesake, Optics, Cardinal point, law, Frequency domain, Physics::Space Physics, symbols, Planck, business
Abstract: The future ESA space mission Planck Surveyor mission will measure the Cosmic Microwave Background temperature and polarisation anisotropies in a frequency domain comprised between 30GHz and 1THz. On board two instruments, LFI based on HEMT technology and HFI using bolometric detectors. We present the optical solutions adopted for this mission, in particular the focal plane design of HFI, concept which has been applied already to other instruments such as the balloon borne experiment Archeops.
Published: 2004

38. Critical tube diameter for detonation transmission and critical initiation energy of spherical detonation

Author: Isabelle Sochet, C. Vaglio, J. Brossard, R. Cayzac, T. Lamy, Laboratoire pluridisciplinaire de recherche en ingénierie des systèmes, mécanique et énergétique (PRISME), Université d'Orléans (UO)-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), and Nexter Munitions
Subjects: Deflagration to detonation transition, Shock wave, Diffraction, Physics, 020301 aerospace & aeronautics, Astrophysics::High Energy Astrophysical Phenomena, Mechanical Engineering, [SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment, Detonation, General Physics and Astronomy, 02 engineering and technology, Mechanics, 01 natural sciences, Moving shock, 010305 fluids & plasmas, Classical mechanics, 0203 mechanical engineering, 0103 physical sciences, Critical radius, Blast wave, ComputingMilieux_MISCELLANEOUS, Dimensionless quantity
Abstract: Two experimental setups are used to study propagation and attenuation of blast waves. In the first one, the blast wave is generated by a spherical detonation, and in the second one, the blast wave is created by the diffraction of a planar detonation propagating in a tube. The similarity of these phenomena appears clearly by means of dimensionless space-time and pressure-space diagrams of shock wave propagation. Dimensionless variables are expressed as a function of the supplied energy. Two energy formulations are proposed: a piston model and a bulk energy model. The established diagrams cover a wide range of industrial applications. Under critical conditions, the energy released by a planar detonation is correlated to the ignition source energy supply and a relationship which links the critical radius of detonation to the critical tube diameter.
Published: 1999

39. Detonability of fuel-oxygen and fuel-air mixtures

Author: Isabelle Sochet, M. Aminallah, J. Brossard, Laboratoire pluridisciplinaire de recherche en ingénierie des systèmes, mécanique et énergétique (PRISME), Université d'Orléans (UO)-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Laboratoire de l'Accélérateur Linéaire (LAL), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
Subjects: 020301 aerospace & aeronautics, Materials science, Mechanical Engineering, [SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment, Theoretical models, Detonation, General Physics and Astronomy, Thermodynamics, chemistry.chemical_element, 02 engineering and technology, 01 natural sciences, Oxygen, Methane, 010305 fluids & plasmas, Shock (mechanics), [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph], chemistry.chemical_compound, 0203 mechanical engineering, chemistry, Acetylene, Propane, Critical energy, 0103 physical sciences, ComputingMilieux_MISCELLANEOUS
Abstract: An analysis of theoretical models and experimental investigations of the detonability of unconfined detonation in uniform gaseous mixtures shows a disparity in results. The present study is limited to propane, acetylene and methane diluted with oxygen or air in variable proportions and initial pressures at ambient temperature conditions. Because of the disparity in results, a simple and general formulation of critical initiation energy for gaseous detonations has been investigated. The problem has been formulated using the conservation equation of total energy enclosed by the shock. From this, a simple form for the critical energy has been deduced. This approach leads to a good simulation in uniform mixtures, regardless of initiation conditions. Some applications are presented in this paper.
Published: 1997

40. Critical radius of explosive gaseous mixtures with initial concentration gradients

Author: Isabelle Sochet, J. Brossard, Laboratoire pluridisciplinaire de recherche en ingénierie des systèmes, mécanique et énergétique (PRISME), Université d'Orléans (UO)-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Laboratoire de l'Accélérateur Linéaire (LAL), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
Subjects: Deflagration to detonation transition, Materials science, Explosive material, Shock (fluid dynamics), Scale (ratio), Astrophysics::High Energy Astrophysical Phenomena, 020209 energy, Mechanical Engineering, [SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment, Detonation, General Physics and Astronomy, Thermodynamics, 02 engineering and technology, 01 natural sciences, 010305 fluids & plasmas, chemistry.chemical_compound, chemistry, Propane, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Critical radius, [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph], Concentration gradient, ComputingMilieux_MISCELLANEOUS
Abstract: A synthetic review of works concerning detonation of non-uniform explosive mixtures allows to retain a criterion of detonation onset. This criterion is due to Zel'dovich and then Makhviladze. The present study proposes to adapt Makhviladze's criterion to define the formation point of a quasi-stationary detonation in spatially non-uniform, non-stationary and non-preheated gaseous mixtures. The temperature increase of gaseous mixture is due to the travelling shock. This point is compared to the critical radius defining the distance for which the Chapman-Jouguet conditions are attained. The detonability of a non-uniform medium (propane/oxygen mixtures) is characterized by a small scale experimental investigation and by application of a simple advection-diffusion model.
Published: 1997

41. PHIL photoinjector test line

Author: Vincent Chaumat, Eric Jules, Christelle Bruni, E. Mandag, J. Collin, Didier Auguste, O Vitez, C. Arnault, A. Toutain, I. Falleau, V. Soskov, R. Roux, M. Joré, J. Brossard, J.P. Dugal, M. Demarest, C. Prevost, Alessandro Variola, S. Cavalier, H. Monard, J.C. Marrucho, J.N. Cayla, F. Letellier, M. Alves, F. Blot, B. Leluan, P. Lepercq, Eric Mistretta, J.L. Babigeon, Bruno Mercier, Alexandre Gonnin, M. Elkhaldi, M. Dehamme, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), PHIL, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Accelerator Physics (physics.acc-ph), Accelerator physics, Physics, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], FOS: Physical sciences, Photoinjector, Instrumentation and Detectors (physics.ins-det), 01 natural sciences, Test line, Optics, Low energy, Beamline, Magnet, 0103 physical sciences, Cathode ray, Physics - Accelerator Physics, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, business, Instrumentation, Mathematical Physics, Beam (structure)
Abstract: LAL is now equiped with its own platform for photoinjectors tests and Research and Developement, named PHIL (PHotoInjectors at LAL). This facility has two main purposes: push the limits of the photoinjectors performances working on both the design and the associated technology and provide a low energy (MeV) short pulses (ps) electron beam for the interested users. Another very important goal of this machine will be to provide an opportunity to form accelerator physics students, working in a high technology environment. To achieve this goal a test line was realised equipped with an RF source, magnets and beam diagnostics. In this article we will describe the PHIL beamline and its characteristics together with the description of the first two photoinjector realised in LAL and tested: the ALPHAX and the PHIN RF Guns.
Published: 2013

42. Screening for neuroblastoma in North America. Preliminary results of a pathology review from the Quebec Project

Author: L A, Takeuchi, Y, Hachitanda, W G, Woods, M, Tuchman, B, Lemieux, L, Brisson, M, Bernstein, J, Brossard, J M, Leclerc, and T D, Byrne
Subjects: Male, Age Factors, Infant, Newborn, Quebec, Infant, Homovanillic Acid, Prognosis, Los Angeles, Disease-Free Survival, Cohort Studies, Survival Rate, Neuroblastoma, Vanilmandelic Acid, Treatment Outcome, North America, Humans, Mass Screening, Female, Neoplasm Recurrence, Local, Follow-Up Studies, Neoplasm Staging
Abstract: The Quebec Neuroblastoma Screening Project was initiated to assess clinical and biologic aspects of neuroblastomas detected by screening infants born in the province of Quebec from May 1, 1989, to April 30, 1994.Infants were screened for preclinical detection of neuroblastoma by determination of catecholamine metabolites, vanillylmandelic acid (VMA), and homovanillic acid (HVA). Patients with tumors discovered through this screening as well as patients in the same birth cohort with clinically detected tumors were referred to Quebec Oncology Centers for further investigation, diagnosis, and treatment. Pathology specimens were submitted to Childrens Hospital Los Angeles for central review. Tumors were histopathologically classified according to the Shimada system.As of August, 1993, 340,000 infants were screened at 3 weeks and 245,000 of them were retested at 6 months of age. Thirty-one tumors were detected through this screening and removed. Histologic material was available for 27 cases: 14 were detected at 3 weeks of age and 13 at 6 months of age. Twenty-six patients had tumors with favorable histology (FH), and one patient had a Stage I tumor with unfavorable histology (UH). At the time of this writing, all mass screening patients are alive, including one child with relapsed disease. During this period, 48 tumors were detected clinically in the same birth cohort, 40 of which were evaluated histologically. Of these 40 cases, 28 of 29 tumors diagnosed in patients up to age 12 months indicated an FH, whereas 9 of 11 tumors diagnosed in patients older than age 12 months indicated a UH. All patients with FH tumors are alive including a child with relapsed disease. The single patient with UH diagnosed before age 12 months died of disease. Of the nine patients with UH diagnosed after age 12 months, four died of disease, one relapsed, and four are alive (including one treated with bone marrow transplantation) after variable follow-up periods.The tumors detected by mass screening, similar to those tumors detected through clinical examination before age 12 months, were predominantly FH with good prognosis. However, those tumors that were missed by screening and were detected clinically after the patient was 12 months of age were predominantly UH, with serious clinical problems. This subgroup of patients not detectable by the current screening system presents an immediate and important clinical challenge that should be addressed in future studies.
Published: 1995

43. Pressure Loads on a Plane Surface Submitted to an Explosion

Author: C. Desrosier, J. Renard, J. Brossard, and Heru Purnomo
Subjects: Physics::Fluid Dynamics, Surface (mathematics), Soap bubble, Materials science, Plane (geometry), Astrophysics::High Energy Astrophysical Phenomena, Physics::Medical Physics, Detonation, Mechanics, Physics::Geophysics, Overpressure
Abstract: Research investigations of overpressure interactions with large surfaces were carried out with a series of small scale experiments. In this study, the overpressure is created by the detonation simulated by means of a soap bubble confining an explosible gaseous mixture.
Published: 1995

44. 3d Telomere Signatures of Hodgkin-Cells at Diagnosis Identify Patients with Poor Response to Conventional Chemotherapy

Author: Z. Lichtensztejn, H. Knecht, S. Mai, Bassem Sawan, É. Turcotte, S. Prévost, J. Brossard, Daniel Lichtensztejn, and N. Kongruttanachok
Subjects: business.industry, Q-FISH, Hematology, Disease, medicine.disease, Telomere organization, Lymphoma, Telomere, Oncology, Refractory, hemic and lymphatic diseases, medicine, Cancer research, Conventional chemotherapy, business
Abstract: In classical Hodgkin's lymphoma (HL) the malignant mononuclear Hodgkin (H) and multinuclear Reed-Sternberg (RS) cells are characterized by a distinct 3D nuclear telomere organization with shortening of the telomere length and the formation of telomeric aggregates. We asked if the severity of these telomere changes correlates with clinical behaviour of the disease. We evaluated (mainly prospectively) the 3D telomere organization by quantitative fluorescent in situ hybridization (Q-FISH) on diagnostic biopsies from 20 patients who were good responders and compared them with 20 diagnostic biopsies of 11 patients with refractory or relapsing HL (11 initial biopsies, five confirming progressions and four confirming relapses). The H-cells from patients with refractory/relapsing disease contained a significantly higher percentage of very small telomeres (p Disclosure All authors have declared no conflicts of interest.
Published: 2012

45. Maternal malignancy involving the products of conception: a report of malignant melanoma and medulloblastoma

Author: J, Brossard, S, Abish, M L, Bernstein, S, Baruchel, L, Kovacs, and R, Pollack
Subjects: Adult, Placenta Diseases, Pregnancy, Infant, Newborn, Humans, Female, Cerebellar Neoplasms, Melanoma, Pregnancy Complications, Neoplastic, Medulloblastoma
Abstract: Cancer in pregnancy is not uncommon, but cases of maternal malignancy involving the placenta or the fetus are much more rare. We report two additional cases.We report one case of malignant melanoma discovered during pregnancy and found to have metastasized to the placenta. We also describe a case of maternal medulloblastoma involving the placenta at delivery.Although maternal malignancy during pregnancy occurs in as many as one in 1,000 pregnancies, involvement of the products of conception is rare. Subsequent malignancy in the fetus is even more rare. We report two cases, one of melanoma and another of medulloblastoma (the first such case described). Both infants are alive and well.
Published: 1994

46. Screening for neuroblastoma (NB) in North America: the Quebec Project

Author: W G, Woods, B, Lemieux, J M, Leclerc, M L, Bernstein, L, Brisson, J, Brossard, G M, Brodeur, A T, Look, L L, Robison, and J J, Shuster
Subjects: Neuroblastoma, Vanilmandelic Acid, Infant, Newborn, Quebec, Humans, Infant, Mass Screening, Homovanillic Acid, Chromatography, Thin Layer, False Negative Reactions, Gas Chromatography-Mass Spectrometry, Neoplasm Staging
Published: 1994

47. Absence of p53 gene mutations in primary neuroblastomas

Author: K, Vogan, M, Bernstein, J M, Leclerc, L, Brisson, J, Brossard, G M, Brodeur, J, Pelletier, and P, Gros
Subjects: Chromosome Aberrations, Polymorphism, Genetic, Base Sequence, Molecular Sequence Data, Trisomy, Exons, Genes, p53, Polymerase Chain Reaction, Neuroblastoma, Mutation, Humans, Cloning, Molecular, Child, Codon, Chromosomes, Human, Pair 17, DNA Primers, Neoplasm Staging
Abstract: Neuroblastoma is a common childhood malignancy of the sympathetic nervous system. Mutations in p53, a tumor suppressor gene located on the short arm of chromosome 17, are one of the most common genetic lesions in human cancers. The evidence for trisomies of 17q with loss of 17p in some cases of neuroblastoma led us to consider whether p53 mutations might contribute to the onset and progression of this malignancy. In this study, primary tumors from 38 neuroblastoma patients were screened for mutations within the coding exons of the p53 gene by single-strand conformation polymorphism analysis, and potential mutations were further analyzed by nucleotide sequence analysis. Previously described sequence variations were detected in many of the tumors, including a silent polymorphism at codon 213 (CGA to CGG) and the nontransforming Pro to Arg substitution at codon 72 (CCC to CGC). However, no other sequence variations were detected within the coding portions of the p53 gene. This finding suggests that p53 mutations do not contribute to the etiology of neuroblastoma and that the chromosome 17 alterations observed in neuroblastoma involve genes which are distinct from the p53 locus.
Published: 1993

48. Spatiotemporal properties of solitons excited on the surface of shallow water in a hydrodynamic resonator

Author: F. Marin, O. E. Polukhina, J. Brossard, I. Mutabazi, A. B. Ezersky, Morphodynamique Continentale et Côtière (M2C), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS), Institute of Applied Physics of RAS, Russian Academy of Sciences [Moscow] (RAS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Ondes et Milieux Complexes (LOMC), Centre National de la Recherche Scientifique (CNRS)-Université Le Havre Normandie (ULH), and Normandie Université (NU)-Normandie Université (NU)
Subjects: [PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn], Fluid Flow and Transfer Processes, Physics, Period-doubling bifurcation, Mechanical Engineering, Computational Mechanics, [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph], Dissipation, Condensed Matter Physics, 01 natural sciences, [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph], 010305 fluids & plasmas, Nonlinear system, Resonator, Amplitude, Classical mechanics, Mechanics of Materials, Quantum electrodynamics, 0103 physical sciences, Phenomenological model, Soliton, 010306 general physics, Nonlinear Sciences::Pattern Formation and Solitons, Multistability
Abstract: International audience; We have investigated the spatiotemporal properties of solitons generated on the shallow water surface over a background of a large-scale mode in a hydrodynamic resonator when it is forced near the second frequency mode. We have used the space-time diagrams to highlight the spatiotemporal dynamics of nonlinear fields for two solitons colliding in a resonator and compared them to those of solitons occurring in an unbounded system. A state diagram of experimentally observed modes for different values of the excitation parameters has been obtained. In particular, we have evidenced period doubling and the multistability of nonlinear waves excited in the resonator. For a theoretical description of these experimental results, we have developed a phenomenological model, which leads to amplitude and phase equations of a soliton propagating over the background of a harmonic wave. To reproduce experimental results on the multistability, we have supplemented our analysis with a numerical simulation of a modified system of Boussinesq equations for shallow water, taking into account the dissipation effect
Published: 2006

49. Epidemiological survey of central nervous system germ cell tumors in Canadian children.

Author: D. Keene, D. Johnston, D. Strother, C. Fryer, A. Carret, B. Crooks, D. Eisenstat, A. Moghrabi, B. Wilson, J. Brossard, C. Mpofu, I. Odame, S. Zelcer, M. Silva, Y. Samson, J. Hand, and E. Bouffet
Abstract: Abstract ObjectivesÂ Â To determine the incidence and characteristics of pediatric patients with central nervous system (CNS) germ cell tumors (GCT) in Canada. MethodÂ Â A national retrospective review of hospital charts was done on all patients with CNS GCT diagnosed between 1990 and 2004. Patients had to be under age 18Â years at the time of diagnosis of a CNS germ cell tumor and be a resident of Canada. Information extracted included age and year of diagnosis, pathological diagnosis, location of tumor, evidence of disseminated disease at time of diagnosis and biological markers. ResultsÂ Â One hundred and twenty-one cases were identified (83 germinoma; 38 non-germinoma germ cell tumor). The mean annual incidence of CNS GCT was 1.06 per million children (0.7 per million for germinoma; 0.3 per million for NGGCT). Though yearly incidences varied, there was no clear trend to increased incidence. Male predominance was noted (2.4:1 for germinoma; 11:1 for NGGCT). The primary locations were the pineal and suprasellar regions. At the time of diagnosis, disseminated disease was not uncommon (22% germinoma; 32% NGGCT). Î² human gonadotrophin was elevated in the serum, cerebrospinal fluid (CSF) or both in 7% of patients with germinoma and 36% of patients with NGGCT. Elevation of Î±-fetoprotein in serum, CSF or both was seen in 34% of patients with NGGCT. ConclusionÂ Â The incidence of CNS germ cell tumors in Canadian children is similar to that observed in other Western countries. [ABSTRACT FROM AUTHOR]
Published: 2007
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50. Célérité de la détonation sphérique divergente en fonction du rayon

Author: D. Desbordes, J. Brossard, and N Manson
Subjects: Physics, Aerospace Engineering, Physical chemistry
Abstract: Sont presentes de nouveaux resultats experimentaux concernant la propagation de detonations spheriques divergentes sur de grands rayons ( R ⩽ 500 mm). Les mesures ont ete effectuees avec divers melanges gazeux (oxygene-propane-azote, oxygene-acetylene-azote ou helium ou argon, melanges isometriques de methane-oxygene stoechiometrique) tous dans les memes conditions initiales (1 bar, 293°K) et amorces avec le meme apport d'energie par fil explosif. Le parametre de l'etude etait soit la dilution en inerte soit la composition du combustible dans le cas des melanges isometriques. De l'analyse des enregistrements de la frequence Doppler obtenue a l'aide d'un dispositif micro-ondes, la variation de la celerite locale D S ( R ) a ete deduite en fonction de l'abscisse radiale R . Pour les grandes valeurs de R la celerite D S ∞ asymptotiquement atteinte a ete mesuree et la celerite moyenne D deduite du temps de transit entre le centre et la peripherie de la bombe. Une correlation a ete etablie entre le signe et l'amplitude du coefficient δ = (D S∞ − D ) D S∞ et les limites de detonabilite du melange considere. De l'analyse des diagrammes D S ( R ) et la comparaison avec D S ∞ il est apparu que la detonation pouvait etre obtenue immediatement ( D S ( R ) > D S ∞ ) ou bien une zone de predetonation etait observee ( D S ( R ) D S ∞ ).
Published: 1974

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