The Athena X-ray Integral Field Unit: a consolidated design for the system requirement review of the preliminary definition phase
Creators: name: Barret, Didier
name: Albouys, Vincent
name: Herder, Jan-Willem den
name: Piro, Luigi
name: Cappi, Massimo
name: Huovelin, Juhani
name: Kelley, Richard
name: Mas-Hesse, J. Miguel
name: Paltani, Stéphane
name: Rauw, Gregor
name: Rozanska, Agata
name: Svoboda, Jiri
name: Wilms, Joern
name: Yamasaki, Noriko
name: Audard, Marc
name: Bandler, Simon
name: Barbera, Marco
name: Barcons, Xavier
name: Bozzo, Enrico
name: Ceballos, Maria Teresa
name: Charles, Ivan
name: Costantini, Elisa
name: Dauser, Thomas
name: Decourchelle, Anne
name: Duband, Lionel
name: Duval, Jean-Marc
name: Fiore, Fabrizio
name: Gatti, Flavio
name: Goldwurm, Andrea
name: Hartog, Roland den
name: Jackson, Brian
name: Jonker, Peter
name: Kilbourne, Caroline
name: Korpela, Seppo
name: Macculi, Claudio
name: Mendez, Mariano
name: Mitsuda, Kazuhisa
name: Molendi, Silvano
name: Pajot, François
name: Pointecouteau, Etienne
name: Porter, Frederick
name: Pratt, Gabriel W.
name: Prêle, Damien
name: Ravera, Laurent
name: Sato, Kosuke
name: Schaye, Joop
name: Shinozaki, Keisuke
name: Skup, Konrad
name: Soucek, Jan
name: Thibert, Tanguy
name: Vink, Jacco
name: Webb, Natalie
name: Chaoul, Laurence
name: Raulin, Desi
name: Simionescu, Aurora
name: Torrejon, Jose Miguel
name: Acero, Fabio
name: Branduardi-Raymont, Graziella
name: Ettori, Stefano
name: Finoguenov, Alexis
name: Grosso, Nicolas
name: Kaastra, Jelle
name: Mazzotta, Pasquale
name: Miller, Jon
name: Miniutti, Giovanni
name: Nicastro, Fabrizio
name: Sciortino, Salvatore
name: Yamaguchi, Hiroya
name: Beaumont, Sophie
name: Cucchetti, Edoardo
name: D'Andrea, Matteo
name: Eckart, Megan
name: Ferrando, Philippe
name: Kammoun, Elias
name: Lotti, Simone
name: Mesnager, Jean-Michel
name: Natalucci, Lorenzo
name: Peille, Philippe
name: de Plaa, Jelle
name: Ardellier, Florence
name: Argan, Andrea
name: Bellouard, Elise
name: Carron, Jérôme
name: Cavazzuti, Elisabetta
name: Fiorini, Mauro
name: Khosropanah, Pourya
name: Martin, Sylvain
name: Perry, James
name: Pinsard, Frederic
name: Pradines, Alice
name: Rigano, Manuela
name: Roelfsema, Peter
name: Schwander, Denis
name: Torrioli, Guido
name: Ullom, Joel
name: Vera, Isabel
name: Villegas, Eduardo Medinaceli
name: Zuchniak, Monika
name: Brachet, Frank
name: Cicero, Ugo Lo
name: Doriese, William
name: Durkin, Malcom
name: Fioretti, Valentina
name: Geoffray, Hervé
name: Jacques, Lionel
name: Kirsch, Christian
name: Smith, Stephen
name: Adams, Joseph
name: Gloaguen, Emilie
name: Hoogeveen, Ruud
name: van der Hulst, Paul
name: Kiviranta, Mikko
name: van der Kuur, Jan
name: Ledot, Aurélien
name: van Leeuwen, Bert-Joost
name: van Loon, Dennis
name: Lyautey, Bertrand
name: Parot, Yann
name: Sakai, Kazuhiro
name: van Weers, Henk
name: Abdoelkariem, Shariefa
name: Adam, Thomas
name: Adami, Christophe
name: Aicardi, Corinne
name: Akamatsu, Hiroki
name: Alonso, Pablo Eleazar Merino
name: Amato, Roberta
name: André, Jérôme
name: Angelinelli, Matteo
name: Anon-Cancela, Manuel
name: Anvar, Shebli
name: Atienza, Ricardo
name: Attard, Anthony
name: Auricchio, Natalia
name: Balado, Ana
name: Bancel, Florian
name: Barusso, Lorenzo Ferrari
name: Bernard, Vivian
name: Berrocal, Alicia
name: Blin, Sylvie
name: Bonino, Donata
name: Bonnet, François
name: Bonny, Patrick
name: Boorman, Peter
name: Boreux, Charles
name: Bounab, Ayoub
name: Boutelier, Martin
name: Boyce, Kevin
name: Brienza, Daniele
name: Bruijn, Marcel
name: Bulgarelli, Andrea
name: Calarco, Simona
name: Callanan, Paul
name: Camus, Thierry
name: Canourgues, Florent
name: Capobianco, Vito
name: Cardiel, Nicolas
name: Castellani, Florent
name: Cheatom, Oscar
name: Chervenak, James
name: Chiarello, Fabio
name: Clerc, Nicolas
name: Clerc, Laurent
name: Cobo, Beatriz
name: Coeur-Joly, Odile
name: Coleiro, Alexis
name: Colonges, Stéphane
name: Corcione, Leonardo
name: Coriat, Mickael
name: Coynel, Alexandre
name: Cuttaia, Francesco
name: D'Ai, Antonino
name: D'anca, Fabio
name: Dadina, Mauro
name: Daniel, Christophe
name: DeNigris, Natalie
name: Dercksen, Johannes
name: DiPirro, Michael
name: Doumayrou, Eric
name: Dubbeldam, Luc
name: Dupieux, Michel
name: Dupourqué, Simon
name: Durand, Jean Louis
name: Eckert, Dominique
name: Eiriz, Valvanera
name: Ercolani, Eric
name: Etcheverry, Christophe
name: Finkbeiner, Fred
name: Fiocchi, Mariateresa
name: Fossecave, Hervé
name: Franssen, Philippe
name: Frericks, Martin
name: Gabici, Stefano
name: Gant, Florent
name: Gao, Jian-Rong
name: Gastaldello, Fabio
name: Genolet, Ludovic
name: Ghizzardi, Simona
name: Gil, M Angeles Alcacera
name: Giovannini, Elisa
name: Godet, Olivier
name: Gomez-Elvira, Javier
name: Gonzalez, Manuel
name: Gonzalez, Raoul
name: Gottardi, Luciano
name: Granat, Dolorès
name: Gros, Michel
name: Guignard, Nicolas
name: Hieltjes, Paul
name: Hurtado, Adolfo Jesus
name: Irwin, Kent
name: Jacquey, Christian
name: Janiuk, Agnieszka
name: Jaubert, Jean
name: Jiménez, Maria
name: Jolly, Antoine
name: Jourdan, Thierry
name: Julien, Sabine
name: Kedziora, Bartosz
name: Korb, Andrew
name: Kreykenbohm, Ingo
name: König, Ole
name: Langer, Mathieu
name: Laudet, Philippe
name: Laurent, Philippe
name: Laurenza, Monica
name: Lesrel, Jean
name: Ligori, Sebastiano
name: Lorenz, Maximilian
name: Luminari, Alfredo
name: Maffei, Bruno
name: Maisonnave, Océane
name: Marelli, Lorenzo
name: Massonet, Didier
name: Maussang, Irwin
name: Melchor, Alejandro Gonzalo
name: Mer, Isabelle Le
name: Michalski, Lea
name: Millerioux, Jean-Pierre
name: Mineo, Teresa
name: Minervini, Gabriele
name: Molin, Alexeï
name: Monestes, David
name: Montinaro, Nicola
name: Mot, Baptiste
name: Murat, David
name: Nagayoshi, Kenichiro
name: Nazé, Yaël
name: Noguès, Loïc
name: Pailot, Damien
name: Panessa, Francesca
name: Parodi, Luigi
name: Petit, Pascal
name: Piconcelli, Enrico
name: Pinto, Ciro
name: Plaza, Jose Miguel Encinas
name: Poyatos, David
name: Prouvé, Thomas
name: Ptak, Andy
name: Puccetti, Simonetta
name: Puccio, Elena
name: Ramon, Pascale
name: Reina, Manuel
name: Rioland, Guillaume
name: Rodriguez, Louis
name: Roig, Anton
name: Rollet, Bertrand
name: Roncarelli, Mauro
name: Roudil, Gilles
name: Rudnicki, Tomasz
name: Sanisidro, Julien
name: Sciortino, Luisa
name: Silva, Vitor
name: Sordet, Michael
name: Soto-Aguilar, Javier
name: Spizzi, Pierre
name: Surace, Christian
name: Sánchez, Miguel Fernández
name: Taralli, Emanuele
name: Terrasa, Guilhem
name: Terrier, Régis
name: Todaro, Michela
name: Ubertini, Pietro
name: Uslenghi, Michela
name: de Vaate, Jan Geralt Bij
name: Vaccaro, Davide
name: Varisco, Salvatore
name: Varnière, Peggy
name: Vibert, Laurent
name: Vidriales, María
name: Villa, Fabrizio
name: Vodopivec, Boris Martin
name: Volpe, Angela
name: de Vries, Cor
name: Wakeham, Nicholas
name: Walmsley, Gavin
name: Wise, Michael
name: de Wit, Martin
name: Woźniak, Grzegorz
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The Athena X-ray Integral Unit (X-IFU) is the high resolution X-ray spectrometer, studied since 2015 for flying in the mid-30s on the Athena space X-ray Observatory, a versatile observatory designed to address the Hot and Energetic Universe science theme, selected in November 2013 by the Survey Science Committee. Based on a large format array of Transition Edge Sensors (TES), it aims to provide spatially resolved X-ray spectroscopy, with a spectral resolution of 2.5 eV (up to 7 keV) over an hexagonal field of view of 5 arc minutes (equivalent diameter). The X-IFU entered its System Requirement Review (SRR) in June 2022, at about the same time when ESA called for an overall X-IFU redesign (including the X-IFU cryostat and the cooling chain), due to an unanticipated cost overrun of Athena. In this paper, after illustrating the breakthrough capabilities of the X-IFU, we describe the instrument as presented at its SRR, browsing through all the subsystems and associated requirements. We then show the instrument budgets, with a particular emphasis on the anticipated budgets of some of its key performance parameters. Finally we briefly discuss on the ongoing key technology demonstration activities, the calibration and the activities foreseen in the X-IFU Instrument Science Center, and touch on communication and outreach activities, the consortium organisation, and finally on the life cycle assessment of X-IFU aiming at minimising the environmental footprint, associated with the development of the instrument. Thanks to the studies conducted so far on X-IFU, it is expected that along the design-to-cost exercise requested by ESA, the X-IFU will maintain flagship capabilities in spatially resolved high resolution X-ray spectroscopy, enabling most of the original X-IFU related scientific objectives of the Athena mission to be retained. (abridged).
description: 48 pages, 29 figures, Accepted for publication in Experimental Astronomy with minor editing