Euclid Near Infrared Spectrometer and Photometer instrument concept and first test results obtained for different breadboards models at the end of phase C

The Euclid mission objective is to understand why the expansion of the Universe is accelerating through by mapping the geometry of the dark Universe by investigating the distance-redshift relationship and tracing the evolution of cosmic structures. The Euclid project is part of ESA's Cosmic Vision program with its launch planned for 2020 (ref [1]). The NISP (Near Infrared Spectrometer and Photometer) is one of the two Euclid instruments and is operating in the near-IR spectral region (900- 2000nm) as a photometer and spectrometer. The instrument is composed of: - a cold (135K) optomechanical subsystem consisting of a Silicon carbide structure, an optical assembly (corrector and camera lens), a filter wheel mechanism, a grism wheel mechanism, a calibration unit and a thermal control system - a detection subsystem based on a mosaic of 16 HAWAII2RG cooled to 95K with their front-end readout electronic cooled to 140K, integrated on a mechanical focal plane structure made with molybdenum and aluminum. The detection subsystem is mounted on the optomechanical subsystem structure - a warm electronic subsystem (280K) composed of a data processing / detector control unit and of an instrument control unit that interfaces with the spacecraft via a 1553 bus for command and control and via Spacewire links for science data This presentation describes the architecture of the instrument at the end of the phase C (Detailed Design Review), the expected performance, the technological key challenges and preliminary test results obtained for different NISP subsystem breadboards and for the NISP Structural and Thermal model (STM)

Utilisation des applications mobiles médicales par les médecins généralistes du Languedoc-Roussillon

Introduction: De plus en plus de médecins utilisent des applications mobiles médicales sur smartphone et tablette tactile dans leur exercice professionne. Peu d'éléments existent dans la littérature sur leur utilisation par les médecins généralistes. Objectifs: Cette étude visait à répertorier les applications mobiles médicales les plus utilisées, leurs contextes et fréquence d'utilisation chez les médecins généralistes du Languedoc-Roussillon. Méthode : Une enquête par questionnaire en ligne a été réalisée auprès des médecins généralistes du LanguedocRoussillon. Résultats : 119 médecins ont répondu au questionnaire. 70% avaient un smartphone et 38% une tablette. 62% de ces répondants utilisaient une ou plusieurs apps médicales. Les utilisateurs possédaient en moyenne 3,8 apps médicales et les trouvaient majoritairement utiles à leur pratique. Les catégories d'apps les plus utilisées étaient les bases de données médicamenteuses (79,6 %), les calculateurs médicaux (42,6%) et les applications de prévention et de suivi du patient (25,9%). Les utilisateurs s'en servaient principalement au quotidien et pendant leur exercice professionnel. Les principaux atouts d'une application médicale étaient l'accessibilité en toute mobilité et la rapidité pour atteindre l'information. Conclusion : Les applications mobiles médicales s'avèrent être, pour les médecins généralistes, des outils de plus en plus utiles au quotidien sur le terrain, notamment en situation de mobilité. L'arrivée dans le champ médical de la génération Y qui a grandi avec l'informatique est de nature à accélérer le processus d'utilisation de ces nouveaux supports numériques dont le marché est en pleine expansionMONTPELLIER-BU Médecine UPM (341722108) / SudocMONTPELLIER-BU Médecine (341722104) / SudocSudocFranceF

NISP DPU FM01 Mechanical Integration Procedure: AS RUN

The purpose of this document is to present the mechanical integration procedure of the DPU FM01 box for the AIT activity in preparation for the NISP FM TV3 test inside the ERIOS vacuum chamber

Incoming inspection Report of the NI-DPU/DCU PFM

The purpose of this report is to provide the results of the incoming inspection performed on the DPU/DCU PFM (FM01) delivered by OHB-I, after shipping to the LAM laboratory on 8 July 2019. The inspection report contains the status of the unit after inspection and some pictures of the unpacking and the visual inspectio

Incoming inspection Report of the NI-DPU/DCU FM02

The purpose of this report is to provide the results of the incoming inspection performed on the DPU/DCU FM 02 delivered by OHB-I, after shipping to the LAM laboratory on 29 October 2019. The inspection report contains the status of the unit after inspection and some pictures of the unpacking and the visual inspection

Update of Single Event Effects Radiation Hardness Assurance of Readout Integrated Circuit of Infrared Image Sensors at Cryogenic Temperature

International audienceThis paper review presents Single Event Effects (SEE) irradiation tests under heavy ions of the test-chip of D-Flip-Flop (DFF) cells and complete readout integrated circuits (ROIC) as a function of temperature, down to 50 K. The analyses of the experimental data are completed using the SEE prediction tool MUSCA SEP3. The conclusions derived from the experimental measurements and related analyses allow to update the current SEE radiation hardness assurance (RHA) for readout integrated circuits of infrared image sensors used at cryogenic temperatures. The current RHA update is performed on SEE irradiation tests at room temperature, as opposed to the operational cryogenic temperature. These tests include SET (Single Event Transient), SEU (Single Event Upset) and SEFI (Single Event Functional Interrupt) irradiation tests. This update allows for reducing the cost of ROIC qualifications and the test setup complexity for each space mission

Dégradation induite par les radiations des senseurs optiques

International audienceSpace system undergo particularly hard natural radiation environment, but can also potentially be subject to the radiations injected in low earth orbit by the explosion of a nuclear weapons. The increasing use of optoelectronic components in space systems makes the risk assessment regarding the radiation effects of an increasing interest. This paper presents recent results about the degradation of optoelectronic devices in term of atomic displacements. This paper Most of this work has been developed under the EDA contract JIP-ICET2 A-1341-RT-GP within the CapTech Technologies for Components and Modules’ (TCM) in EDA

Comparison of Fe and Ni opacity calculations for a better understanding of pulsating stellar envelopes

International audienceOpacity is an important ingredient of the evolution of stars. The calculation of opacity coefficients is complicated by the fact that the plasma contains partially ionized heavy ions that contribute to opacity dominated by H and He. Up to now, the astrophysical community has greatly benefited from the work of the contributions of Los Alamos [1], Livermore [2] and the Opacity Project (OP) [3]. However unexplained differences of up to 50% in the radiative forces and Rosseland mean values for Fe have been noticed for conditions corresponding to stellar envelopes. Such uncertainty has a real impact on the understanding of pulsating stellar envelopes, on the excitation of modes, and on the identification of the mode frequencies. Temperature and density conditions equivalent to those found in stars can now be produced in laboratory experiments for various atomic species. Recently the photo-absorption spectra of nickel and iron plasmas have been measured during the LULI 2010 campaign, for temperatures between 15 and 40 eV and densities of ˜3 mg/cm3. A large theoretical collaboration, the "OPAC", has been formed to prepare these experiments. We present here the set of opacity calculations performed by eight different groups for conditions relevant to the LULI 2010 experiment and to astrophysical stellar envelope conditions