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The ATHENA X-ray Integral Field Unit (X-IFU)
Barret, Didier; Lam Trong, Thien; den Herder, Jan-Willem et al.
2018In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series
 

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Abstract :
[en] The X-ray Integral Field Unit (X-IFU) is the high resolution X-ray spectrometer of the ESA Athena X-ray observatory. Over a field of view of 5' equivalent diameter, it will deliver X-ray spectra from 0.2 to 12 keV with a spectral resolution of 2.5 eV up to 7 keV on ˜ 5" pixels. The X-IFU is based on a large format array of super-conducting molybdenum-gold Transition Edge Sensors cooled at ˜ 90 mK, each coupled with an absorber made of gold and bismuth with a pitch of 249 μm. A cryogenic anti-coincidence detector located underneath the prime TES array enables the non X-ray background to be reduced. A bath temperature of ˜ 50 mK is obtained by a series of mechanical coolers combining 15K Pulse Tubes, 4K and 2K Joule-Thomson coolers which pre-cool a sub Kelvin cooler made of a 3He sorption cooler coupled with an Adiabatic Demagnetization Refrigerator. Frequency domain multiplexing enables to read out 40 pixels in one single channel. A photon interacting with an absorber leads to a current pulse, amplified by the readout electronics and whose shape is reconstructed on board to recover its energy with high accuracy. The defocusing capability offered by the Athena movable mirror assembly enables the X-IFU to observe the brightest X-ray sources of the sky (up to Crab-like intensities) by spreading the telescope point spread function over hundreds of pixels. Thus the X-IFU delivers low pile-up, high throughput (< 50%), and typically 10 eV spectral resolution at 1 Crab intensities, i.e. a factor of 10 or more better than Silicon based X-ray detectors. In this paper, the current X-IFU baseline is presented, together with an assessment of its anticipated performance in terms of spectral resolution, background, and count rate capability. The X-IFU baseline configuration will be subject to a preliminary requirement review that is scheduled at the end of 2018.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Barret, Didier;  Institut de Recherche en Astrophysique et Planétologie (France)
Lam Trong, Thien;  Ctr. National d'Études Spatiales (France)
den Herder, Jan-Willem;  SRON Netherlands Institute for Space Research (Netherlands)
Piro, Luigi;  Istituto di Astrofisica e Planetologia Spaziali (Italy)
Cappi, Massimo;  l'Osservatorio di astrofisica e scienza dello spazio di Bologna (Italy)
Houvelin, Juhani;  Univ. of Helsinki (Finland)
Kelley, Richard;  NASA Goddard Space Flight Ctr. (United States)
Mas-Hesse, J. Miguel;  Ctr. de Astrobiologia, CSIC/INTA (Spain)
Mitsuda, Kazuhisa;  Institute of Space and Astronautical Science (Japan)
Paltani, Stéphane;  Univ. of Geneva (Switzerland)
Rauw, Grégor  ;  Université de Liège - ULiège > Groupe d'astrophysique des hautes énergies (GAPHE)
Rozanska, Agata;  Nicolaus Copernicus Astronomical Ctr. (Poland)
Wilms, Joern;  Univ. of Erlangen-Nüremberg (Germany)
Bandler, Simon;  NASA Goddard Space Flight Ctr. (United States)
Barbera, Marco;  Univ. degli Studi di Palermo (Italy)
Barcons, Xavier;  European Southern Observatory (Germany)
Bozzo, Enrico;  Univ. of Geneva (Switzerland)
Ceballos, Maria Teresa;  Univ. de Cantabria (Spain)
Charles, Ivan;  Univ. Grenoble Alpes (France)
Costantini, Elisa;  SRON Netherlands Institute for Space Research (Netherlands)
Decourchelle, Anne;  Univ. Paris Diderot, CEA/CNRS (France)
den Hartog, Roland;  SRON Netherlands Institute for Space Research (Netherlands)
Duband, Lionel;  CEA-Grenoble (France)
Duval, Jean-Marc;  Univ. Grenoble Alpes, CEA, INAC-SBT (France)
Fiore, Fabrizio;  INAF - Osservatorio Astronomico di Roma (Italy)
Gatti, Flavio;  Univ. degli Studi di Genova (Italy)
Goldwurm, Andrea;  Astroparticule et Cosmologie (France)
Jackson, Brian;  SRON Netherlands Institute for Space Research (Netherlands)
Jonker, Peter;  SRON Netherlands Institute for Space Research (Netherlands)
Kilbourne, Caroline;  NASA Goddard Space Flight Ctr. (United States)
Macculi, Claudio;  Istituto di Astrofisica e Planetologia Spaziali (Italy)
Mendez, Mariano;  Univ. Groningen (Netherlands)
Molendi, Silvano;  INAF - IASF Milano (Italy)
Orleanski, Piotr;  Ctr. Badan Kosmcznych (Poland)
Pajot, François;  Institut de Recherche en Astrophysique et Planétologie (France)
Pointecouteau, Etienne;  Institut de Recherche en Astrophysique et Planétologie (France)
Porter, Frederick;  NASA Goddard Space Flight Ctr. (United States)
Pratt, Gabriel W.;  Univ. Paris Diderot, CEA/CNRS (France)
Prêle, Damien;  Astroparticule et Cosmologie (France)
Ravera, Laurent;  Institut de Recherche en Astrophysique et Planétologie (France)
Sato, Kosuke;  Saitama Univ. (Japan)
Schaye, Joop;  Leiden Univ. (Netherlands)
Shinozaki, Keisuke;  Japan Aerospace Exploration Agency (Japan)
Thibert, Tanguy ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Valenziano, Luca;  l'Osservatorio di astrofisica e scienza dello spazio di Bologna (Italy)
Valette, Véronique;  Ctr. National d'Études Spatiales (France)
Vink, Jacco;  Univ. van Amsterdam (Netherlands)
Webb, Natalie;  Institut de Recherche en Astrophysique et Planétologie (France)
Wise, Michael;  ASTRON (Netherlands)
Yamasaki, Noriko;  Institute of Space and Astronautical Science (Japan)
Douchin, Françoise;  Ctr. National d'Études Spatiales (France)
Mesnager, Jean-Michel;  Ctr. National d'Études Spatiales (France)
Pontet, Bernard;  Ctr. National d'Études Spatiales (France)
Pradines, Alice;  Ctr. National d'Études Spatiales (France)
Branduardi-Raymont, Graziella;  Univ. College London (United Kingdom)
Bulbul, Esra;  Harvard-Smithsonian Ctr. for Astrophysics (United States)
Dadina, Mauro;  l'Osservatorio di astrofisica e scienza dello spazio di Bologna (Italy)
Ettori, Stefano;  INAF - IASF Bologna (Italy)
Finoguenov, Alexis;  Univ. of Helsinki (Finland)
Fukazawa, Yasushi;  Hiroshima Univ. (Japan)
Janiuk, Agnieszka;  Ctr. for Theoretical Physics (Poland)
Kaastra, Jelle;  SRON Netherlands Institute for Space Research (Netherlands)
Mazzotta, Pasquale;  Univ. degli Studi di Roma "Tor Vergata" (Italy)
Miller, Jon;  Univ. of Michigan (United States)
Miniutti, Giovanni;  Ctr. de Astrobiologia, CSIC/INTA (Spain)
Nazé, Yaël  ;  Université de Liège - ULiège > Groupe d'astrophysique des hautes énergies (GAPHE)
Nicastro, Fabrizio;  INAF - Osservatorio Astronomico di Roma (Italy)
Scioritino, Salavtore;  l'Osservatorio di astrofisica e scienza dello spazio di Palermo (Italy)
Simonescu, Aurora;  SRON Netherlands Institute for Space Research (Netherlands)
Torrejon, Jose Miguel;  Univ. de Alicante (Spain)
Frezouls, Benoit;  Ctr. National d'Études Spatiales (France)
Geoffray, Hervé;  Ctr. National d'Études Spatiales (France)
Peille, Philippe;  Ctr. National d'Études Spatiales (France)
Aicardi, Corinne;  Ctr. National d'Études Spatiales (France)
André, Jérôme;  Ctr. National d'Études Spatiales (France)
Daniel, Christophe;  Ctr. National d'Études Spatiales (France)
Clénet, Antoine;  Institut de Recherche en Astrophysique et Planétologie (France)
Etcheverry, Christophe;  Ctr. National d'Études Spatiales (France)
Gloaguen, Emilie;  Ctr. National d'Études Spatiales (France)
Hervet, Gilles;  Ctr. National d'Études Spatiales (France)
Jolly, Antoine;  Ctr. National d'Études Spatiales (France)
Ledot, Aurélien;  Ctr. National d'Études Spatiales (France)
Paillet, Irwin;  Ctr. National d'Études Spatiales (France)
Schmisser, Roseline;  Ctr. National d'Études Spatiales (France)
Vella, Bruno;  Ctr. National d'Études Spatiales (France)
Damery, Jean-Charles;  Ctr. National d'Études Spatiales (France)
Boyce, Kevin;  NASA Goddard Space Flight Ctr. (United States)
Dipirro, Mike;  NASA Goddard Space Flight Ctr. (United States)
Lotti, Simone;  INAF - Istituto di Astrofisica e Planetologia Spaziali - IAPS (Italy)
Schwander, Denis;  Ctr. National d'Études Spatiales (France)
Smith, Stephen;  NASA Goddard Space Flight Ctr. (United States)
Van Leeuwen, Bert-Joost;  SRON Netherlands Institute for Space Research (Netherlands)
van Weers, Henk;  SRON Netherlands Institute for Space Research (Netherlands)
Clerc, Nicolas;  Institut de Recherche en Astrophysique et Planétologie (France)
Cobo, Beatriz;  Instituto de Física de Cantabria (Spain)
Dauser, Thomas;  ECAP, Univ. of Erlangen-Nüremberg (Germany)
Kirsch, Christian;  ECAP, Univ. of Erlangen-Nüremberg (Germany)
Cucchetti, Edoardo;  Institut de Recherche en Astrophysique et Planétologie (France)
Eckart, Megan;  NASA Goddard Space Flight Ctr. (United States)
Ferrando, Philippe;  Univ. Paris Diderot, CEA/CNRS (France)
Natalucci, Lorenzo;  Istituto di Astrofisica e Planetologia Spaziali (Italy))
More authors (91 more) Less
Language :
English
Title :
The ATHENA X-ray Integral Field Unit (X-IFU)
Publication date :
01 July 2018
Event name :
SPIE Astronomical Telescopes and Instrumentation
Event date :
10 - 15 June 2018
Audience :
International
Main work title :
Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series
ISBN/EAN :
9781510619517
Pages :
1-15, id 106991G
Commentary :
ISBN: 0699
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since 28 August 2018

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