Dr. François P. Pajot Profile

Dr. François P. Pajot

Researcher at Institut de Recherche en Astrophysique et Planétologie

SPIE Involvement:

Author

Publications (42)

Proceedings Article | 31 August 2022 Poster + Paper

Poster + Paper

QUBIC: the Q and U bolometric interferometer for cosmology

M. Piat, E. Battistelli, P. de Bernardis, G. D'Alessandro, M. De Petris, L. Grandsire, J.-Ch. Hamilton, T. D. Hoang, S. Marnieros, S. Masi, A. Mennella, L. Mousset, C. O'Sullivan, D. Prêle, G. Stankowiak, A. Tartari, J.-P. Thermeau, S. A. Torchinsky, F. Voisin, M. Zannoni, P. Ade, J. G. Alberro, A. Almela, G. Amico, L. H. Arnaldi, D. Auguste, J. Aumont, S. Azzoni, S. Banfi, B. Bélier, A. Baù, D. Bennett, L. Bergé, J.-Ph. Bernard, M. Bersanelli, M.-A. Bigot-Sazy, J. Bonaparte, J. Bonis, E. Bunn, D. Burke, D. Buzi, F. Cavaliere, P. Chanial, C. Chapron, R. Charlassier, A. C. Cobos Cerutti, F. Columbro, A. Coppolecchia, G. De Gasperis, M. De Leo, S. Dheilly, C. Duca, L. Dumoulin, A. Etchegoyen, A. Fasciszewski, L. P. Ferreyro, D. Fracchia, C. Franceschet, M. M. Gamboa Lerena, K. M. Ganga, B. García, M. E. García Redondo, M. Gaspard, D. Gayer, M. Gervasi, M. Giard, V. Gilles, Y. Giraud-Heraud, M. Gómez Berisso, M. González, M. Gradziel, M. R. Hampel, D. Harari, S. Henrot-Versillé, F. Incardona, E. Jules, J. Kaplan, C. Kristukat, L. Lamagna, S. Loucatos, T. Louis, B. Maffei, W. Marty, A. Mattei, A. May, M. McCulloch, L. Mele, D. Melo, L. Montier, L. M. Mundo, J. A. Murphy, J. D. Murphy, F. Nati, E. Olivicri, C. Oriol, A. Paiella, F. Pajot, A. Passerini, H. Pastoriza, A. Pelosi, C. Perbost, M. Perciballi, F. Pezzotta, F. Piacentini, L. Piccirillo, G. Pisano, M. Platino, G. Polenta, R. Puddu, D. Rambaud, E. Rasztocky, P. Ringegni, G. E. Romero, J. Salum, A. Schillaci, C. G. Scóccola, S. Scully, S. Spinelli, M. Stolpovskiy, A. D. Supanitsky, P. Timbie, M. Tomasi, C. Tucker, G. Tucker, D. Viganò, N. Vittorio, F. Wicek, M. Wright, A. Zullo

Proceedings Volume 12190, 121902T (2022) https://doi.org/10.1117/12.2642114

KEYWORDS: Sensors, Calibration, Multiplexing, Interferometers, Cryogenics, Computer aided design, Amplifiers, Polarization, Interferometry

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Proceedings Article | 31 August 2022 Poster + Paper

Poster + Paper

A 50 mK test bench for demonstration of the readout chain of Athena/X-IFU

Florent Castellani, Sophie Beaumont, François Pajot, Gilles Roudil, Joseph Adams, Simon Bandler, James Chervenak, Christophe Daniel, Edward Denison, W. Bertrand Doriese, Michel Dupieux, Malcolm Durkin, Hervé Geoffray, Gene Hilton, David Murat, Yann Parot, Philippe Peille, Damien Prêle, Laurent Ravera, Carl Reintsema, Kazuhiro Sakai, Robert Stevens, Joel Ullom, Leila Vale, Nicholas Wakeham

Proceedings Volume 12181, 1218144 (2022) https://doi.org/10.1117/12.2630323

KEYWORDS: Electronics, Time division multiplexing, X-rays, Prototyping, Photons, Multiplexing, Linear filtering

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Proceedings Article | 24 June 2021 Poster + Paper

Poster + Paper

A test platform for the detection and readout chain for the Athena X-IFU

Gabriele Betancourt-Martinez, François Pajot, Gilles Roudil, Joseph Adams, Simon Bandler, Sophie Beaumont, Bernard Bertrand, Florent Castellani, Edoardo Cucchetti, Michel Dupieux, Hervé Geoffray, Philippe Peille, Laurent Ravera, Doreen Wernicke, Aurélien Ledot

Proceedings Volume 11444, 1144444 (2021) https://doi.org/10.1117/12.2561281

KEYWORDS: Staring arrays, Sensors, Magnetism, Fused deposition modeling, Electronics, Magnetic sensors, X-rays, Time division multiplexing, Superconductors, Temperature metrology

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Proceedings Article | 13 December 2020 Poster + Presentation + Paper

Poster + Presentation + Paper

Calibration of QUBIC: The Q and U bolometric interferometer for cosmology

J. Murphy, D. Burke, M. M. Gamboa Lerena, J.-Ch. Hamilton, L. Mousset, M. De Petris, C. O'Sullivan, S. Torchinsky, P. Ade, J. G. Alberro, A. Almela, G. Amico, L. H. Arnaldi, D. Auguste, J. Aumont, S. Azzoni, S. Banfi, B. Bélier, E. Battistelli, A. Baù, D. Bennett, L. Bergé, P. de Bernardis, J.-Ph. Bernard, M. Bersanelli, M.-A. Bigot-Sazy, J. Bonaparte, J. Bonis, E. Bunn, D. Buzi, F. Cavaliere, P. Chanial, C. Chapron, R. Charlassier, A. C. Cobos Cerutti, F. Columbro, A. Coppolecchia, G. D'Alessandro, G. De Gasperis, M. De Leo, S. Dheilly, C. Duca, L. Dumoulin, A. Etchegoyen, A. Fasciszewski, L. P. Ferreyro, D. Fracchia, C. Franceschet, K. Ganga, B. García, M. E. García Redondo, M. Gaspard, D. Gayer, M. Gervasi, M. Giard, V. Gilles, Y. Giraud-Heraud, L. Grandsire, M. Gómez Berisso, M. González, M. Gradziel, M. Hampel, D. Harari, S. Henrot-Versillé, F. Incardona, E. Jules, J. Kaplan, C. Kristukat, L. Lamagna, S. Loucatos, T. Louis, B. Maffei, S. Marnieros, W. Marty, A. Mattei, A. May, M. McCulloch, L. Mele, S. Masi, D. Melo, A. Mennella, L. Montier, L. M. Mundo, J. A. Murphy, F. Nati, E. Olivieri, C. Oriol, A. Paiella, F. Pajot, A. Passerini, H. Pastoriza, A. Pelosi, C. Perbost, M. Perciballi, F. Pezzotta, F. Piacentini, M. Piat, L. Piccirillo, G. Pisano, M. Platino, G. Polenta, D. Prêle, R. Puddu, D. Rambaud, E. Rasztocky, P. Ringegni, G. E. Romero, J. M. Salum, C. Scóccola, A. Schillaci, S. Scully, S. Spinelli, G. Stankowiak, M. Stolpovskiy, A. D. Supanitsky, A. Tartari, J.-P. Thermeau, P. Timbie, M. Tomasi, G. Tucker, C. Tucker, D. Viganò, N. Vittorio, F. Voisin, F. Wicek, M. Wright, M. Zannoni, A. Zullo

Proceedings Volume 11453, 114532G (2020) https://doi.org/10.1117/12.2560172

KEYWORDS: Calibration, Interferometers, Polarization, Bolometers, Data modeling, Microwave radiation, Code division multiplexing, Signal detection, Modulation, Sensors

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Detection chain and electronic readout of the QUBIC instrument

G. Stankowiak, M. Piat, E. Battistelli, G. D'Alessandro, P. de Bernardis, M. De Petris, M. González, L. Grandsire, J.-Ch. Hamilton, T. Hoang, S. Masi, S. Marnieros, A. Mennella, L. Mousset, C. O'Sullivan, D. Prêle, A. Tartari, J.-P. Thermeau, S. Torchinsky, F. Voisin, M. Zannoni, P. Ade, J. G. Alberro, A. Almela, G. Amico, L. H. Arnaldi, D. Auguste, J. Aumont, S. Azzoni, S. Banfi, B. Bélier, A. Baù, D. Bennett, L. Bergé, J.-Ph. Bernard, M. Bersanelli, M.-A. Bigot-Sazy, J. Bonaparte, J. Bonis, E. Bunn, D. Burke, D. Buzi, F. Cavaliere, P. Chanial, C. Chapron, R. Charlassier, A. C. Cobos Cerutti, F. Columbro, A. Coppolecchia, G. de Gasperis, M. De Leo, S. Dheilly, C. Duca, L. Dumoulin, A. Etchegoyen, A. Fasciszewski, L. P. Ferreyro, D. Fracchia, C. Franceschet, M. M. Gamboa Lerena, K. Ganga, B. García, M. E. García Redondo, M. Gaspard, D. Gayer, M. Gervasi, M. Giard, V. Gilles, Y. Giraud-Héraud, M. Gómez Berisso, M. Gradziel, M. Hampel, Diego Harari, S. Henrot-Versillé, F. Incardona, E. Jules, J. Kaplan, C. Kristukat, L. Lamagna, S. Loucatos, T. Louis, B. Maffei, W. Marty, A. Mattei, A. May, M. McCulloch, L. Mele, D. Melo, L. Montier, L. Mundo, J. A. Murphy, J. D. Murphy, F. Nati, E. Olivieri, C. Oriol, A. Paiella, F. Pajot, A. Passerini, H. Pastoriza, A. Pelosi, C. Perbost, M. Perciballi, F. Pezzotta, F. Piacentini, L. Piccirillo, G. Pisano, M. Platino, G. Polenta, R. Puddu, D. Rambaud, P. Ringegni, G. E. Romero, E. Rasztocky, J. M. Salum, A. Schillaci, C. Scóccola, S. Scully, S. Spinelli, M. Stolpovskiy, A. D. Supanitsky, P. Timbie, M. Tomasi, G. Tucker, C. Tucker, D. Viganò, N. Vittorio, F. Wicek, M. Wright, A. Zullo

Proceedings Volume 11453, 1145328 (2020) https://doi.org/10.1117/12.2561567

KEYWORDS: Sensors, Interferometers, Superconductors, Interferometry, Bolometers, Control systems, Polarization, Microwave radiation, Staring arrays, Superconducting detectors

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Proceedings Article | 12 July 2019 Open Access

Open Access

Paper

PILOT optical alignment

B. Mot, G. Roudil, Y. Longval, P. Ade, Y. André, J. Aumont, L. Baustista, J. -P. Bernard, N. Bray, P. de Bernardis, O. Boulade, F. Bousquet, M. Bouzit, V. Buttice, A. Caillat, M. Charra, M. Chaigneau, B. Crane, J. -P. Crussaire, F. Douchin, E. Doumayrou, J. -P. Dubois, C. Engel, P. Etcheto, P. Gélot, M. Griffin, G. Foenard, S. Grabarnik, P. Hargrave, A. Hughes, R. Laureijs, Y. Lepennec, B. Leriche, S. Maestre, B. Maffei, J. Martignac, C. Marty, W. Marty, S. Masi, F. Mirc, R. Misawa, J. Montel, L. Montier, J. Narbonne, J. -P. Nicot, F. Pajot, G. Parot, E. Pérot, J. Pimentao, G. Pisano, N. Ponthieu, I. Ristorcelli, L. Rodriguez, M. Salatino, G. Savini, O. Simonella, M. Saccoccio, P. Tapie, J. Tauber, J. -P. Torre, C. Tucker

Proceedings Volume 11180, 111806Z (2019) https://doi.org/10.1117/12.2536170

KEYWORDS: Mirrors, Optical alignment, Telescopes, Thermal modeling, Galactic astronomy, Polarization, Off axis mirrors, Image quality, Photometry, Point spread functions

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Proceedings Article | 31 July 2018 Presentation + Paper

Presentation + Paper

The ATHENA X-ray Integral Field Unit (X-IFU)

Didier Barret, Thien Lam Trong, Jan-Willem den Herder, Luigi Piro, Massimo Cappi, Juhani Houvelin, Richard Kelley, J. Miguel Mas-Hesse, Kazuhisa Mitsuda, Stéphane Paltani, Gregor Rauw, Agata Rozanska, Joern Wilms, Simon Bandler, Marco Barbera, Xavier Barcons, Enrico Bozzo, Maria Teresa Ceballos, Ivan Charles, Elisa Costantini, Anne Decourchelle, Roland den Hartog, Lionel Duband, Jean-Marc Duval, Fabrizio Fiore, Flavio Gatti, Andrea Goldwurm, Brian Jackson, Peter Jonker, Caroline Kilbourne, Claudio Macculi, Mariano Mendez, Silvano Molendi, Piotr Orleanski, François Pajot, Etienne Pointecouteau, Frederick Porter, Gabriel Pratt, Damien Prêle, Laurent Ravera, Kosuke Sato, Joop Schaye, Keisuke Shinozaki, Tanguy Thibert, Luca Valenziano, Véronique Valette, Jacco Vink, Natalie Webb, Michael Wise, Noriko Yamasaki, Françoise Douchin, Jean-Michel Mesnager, Bernard Pontet, Alice Pradines, Graziella Branduardi-Raymont, Esra Bulbul, Mauro Dadina, Stefano Ettori, Alexis Finoguenov, Yasushi Fukazawa, Agnieszka Janiuk, Jelle Kaastra, Pasquale Mazzotta, Jon Miller, Giovanni Miniutti, Yael Naze, Fabrizio Nicastro, Salavtore Scioritino, Aurora Simonescu, Jose Miguel Torrejon, Benoit Frezouls, Hervé Geoffray, Philippe Peille, Corinne Aicardi, Jérôme André, Christophe Daniel, Antoine Clénet, Christophe Etcheverry, Emilie Gloaguen, Gilles Hervet, Antoine Jolly, Aurélien Ledot, Irwin Paillet, Roseline Schmisser, Bruno Vella, Jean-Charles Damery, Kevin Boyce, Mike Dipirro, Simone Lotti, Denis Schwander, Stephen Smith, Bert-Joost Van Leeuwen, Henk van Weers, Nicolas Clerc, Beatriz Cobo, Thomas Dauser, Christian Kirsch, Edoardo Cucchetti, Megan Eckart, Philippe Ferrando, Lorenzo Natalucci

Proceedings Volume 10699, 106991G (2018) https://doi.org/10.1117/12.2312409

KEYWORDS: Spectral resolution, X-rays, Sensors, Cryogenics, Optical filters, Wind energy, Electronics, X-ray astronomy, Mirrors, X-ray sources

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Proceedings Article | 9 July 2018 Paper

Paper

Thermal architecture for the QUBIC cryogenic receiver

A. J. May, C. Chapron, G. Coppi, G. D'Alessandro, P. de Bernardis, S. Masi, S. Melhuish, M. Piat, L. Piccirillo, A. Schillaci, J.-P. Thermeau, P. Ade, G. Amico, D. Auguste, J. Aumont, S. Banfi, G. Barbarán, P. Battaglia, E. Battistelli, A. Baù, B. Bélier, D. Bennett, L. Bergé, J.-Ph. Bernard, M. Bersanelli, M.-A. Bigot-Sazy, N. Bleurvacq, J. Bonaparte, J. Bonis, G. Bordier, E. Bréelle, E. Bunn, D. Burke, D. Buzi, A. Buzzelli, F. Cavaliere, P. Chanial, R. Charlassier, F. Columbro, A. Coppolecchia, F. Couchot, R. D'Agostino, G. De Gasperis, M. De Leo, M. De Petris, A. Di Donato, L. Dumoulin, A. Etchegoyen, A. Fasciszewski, C. Franceschet, M. M. Gamboa Lerena, B. García, X. Garrido, M. Gaspard, A. Gault, D. Gayer, M. Gervasi, M. Giard, Y. Giraud-Héraud, M. Gómez Berisso, M. González, M. Gradziel, L. Grandsire, E. Guerrard, J.-Ch. Hamilton, D. Harari, V. Haynes, S. Henrot-Versillé, D. T. Hoang, F. Incardona, E. Jules, J. Kaplan, A. Korotkov, C. Kristukat, L. Lamagna, S. Loucatos, T. Louis, A. Lowitz, V. Lukovic, R. Luterstein, B. Maffei, S. Marnieros, A. Mattei, M. McCulloch, M. C. Medina, L. Mele, A. Mennella, L. Montier, L. M. Mundo, J. A. Murphy, J. D. Murphy, C. O'Sullivan, E. Olivieri, A. Paiella, F. Pajot, A. Passerini, H. Pastoriza, A. Pelosi, C. Perbost, O. Perdereau, F. Pezzotta, F. Piacentini, G. Pisano, G. Polenta, D. Prêle, R. Puddu, D. Rambaud, P. Ringegni, G. E. Romero, M. Salatino, C. G. Scóccola, S. Scully, S. Spinelli, M. Stolpovskiy, F. Suarez, A. Tartari, P. Timbie, S. A. Torchinsky, M. Tristram, V. Truongcanh, C. Tucker, G. Tucker, S. Vanneste, D. Viganó, N. Vittorio, F. Voisin, B. Watson, F. Wicek, M. Zannoni, A. Zullo

Proceedings Volume 10708, 107083V (2018) https://doi.org/10.1117/12.2312085

KEYWORDS: Switches, Receivers, Cryogenics, Polarization, Sensors, Computer aided design, Temperature metrology, Copper, Signal detection, Optical components

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Proceedings Article | 9 July 2018 Paper

Paper

Performance of NbSi transition-edge sensors readout with a 128 MUX factor for the QUBIC experiment

M. Salatino, B. Bélier, C. Chapron, D. T. Hoang, S. Maestre, S. Marnieros, W. Marty, L. Montier, M. Piat, D. Prêle, D. Rambaud, J. P. Thermeau, S. A. Torchinsky, S. Henrot-Versillé, F. Voisin, P. Ade, G. Amico, D. Auguste, J. Aumont, S. Banfi, G. Barbarán, P. Battaglia, E. Battistelli, A. Baù, D. Bennett, L. Bergé, J.-Ph. Bernard, M. Bersanelli, M.-A. Bigot-Sazy, N. Bleurvacq, J. Bonaparte, J. Bonis, G. Bordier, E. Bréelle, E. Bunn, D. Burke, D. Buzi, A. Buzzelli, F. Cavaliere, P. Chanial, R. Charlassier, F. Columbro, G. Coppi, A. Coppolecchia, F. Couchot, R. D'Agostino, G. D’Alessandro, P. de Bernardis, G. De Gasperis, M. De Leo, M. De Petris, A. Di Donato, L. Dumoulin, A. Etchegoyen, A. Fasciszewski, C. Franceschet, M. Gamboa Lerena, B. García, X. Garrido, M. Gaspard, A. Gault, D. Gayer, M. Gervasi, M. Giard, Y. Giraud-Héraud, M. Gómez Berisso, M. González, M. Gradziel, L. Grandsire, E. Guerrard, J.-Ch. Hamilton, D. Harari, V. Haynes, F. Incardona, E. Jules, J. Kaplan, A. Korotkov, C. Kristukat, L. Lamagna, S. Loucatos, T. Louis, A. Lowitz, V. Lukovic, R. Luterstein, B. Maffei, S. Masi, A. Mattei, A. J. May, M. A. McCulloch, M. C. Medina, L. Mele, S. Melhuish, A. Mennella, L. M. Mundo, J. A. Murphy, J. D. Murphy, C. O'Sullivan, E. Olivieri, A. Paiella, F. Pajot, A. Passerini, H. Pastoriza, A. Pelosi, C. Perbost, O. Perdereau, F. Pezzotta, F. Piacentini, L. Piccirillo, G. Pisano, G. Polenta, R. Puddu, P. Ringegni, G. E. Romero, A. Schillaci, C. G. Scóccola, S. Scully, S. Spinelli, M. Stolpovskiy, F. Suarez, A. Tartari, P. Timbie, M. Tristram, V. Truongcanh, C. Tucker, G. Tucker, S. Vanneste, D. Viganò, N. Vittorio, B. Watson, F. Wicek, M. Zannoni, A. Zullo

Proceedings Volume 10708, 1070845 (2018) https://doi.org/10.1117/12.2312080

KEYWORDS: Tellurium, Particles, Detection and tracking algorithms, Interferometers

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Proceedings Article | 9 July 2018 Paper

Paper

QUBIC: the Q and U bolometric interferometer for cosmology

C. O'Sullivan, P. Ade, G. Amico, D. Auguste, J. Aumont, S. Banfi, G. Barbarán, P. Battaglia, E. Battistelli, A. Baù, B. Bélier, D. Bennett, L. Bergé, J.-Ph. Bernard, M. Bersanelli, M.-A. Bigot-Sazy, N. Bleurvacq, J. Bonaparte, J. Bonis, G. Bordier, E. Bréelle, E. Bunn, D. Burke, D. Buzi, A. Buzzelli, F. Cavaliere, P. Chanial, C. Chapron, R. Charlassier, F. Columbro, G. Coppi, A. Coppolecchia, F. Couchot, R. D'Agostino, G. D’Alessandro, P. de Bernardis, G. de Gasperis, M. De Leo, M. De Petris, A. Di Donato, L. Dumoulin, A. Etchegoyen, A. Fasciszewski, C. Franceschet, M. M. Gamboa Lerena, B. García, X. Garrido, M. Gaspard, A. Gault, D. Gayer, M. Gervasi, M. Giard, Y. Giraud-Héraud, M. Gómez Berisso, M. González, M. Gradziel, L. Grandsire, E. Guerrard, J.-Ch. Hamilton, D. Harari, V. Haynes, S. Henrot-Versillé, D. T. Hoang, F. Incardona, E. Jules, J. Kaplan, A. Korotkov, C. Kristukat, L. Lamagna, S. Loucatos, T. Louis, A. Lowitz, V. Lukovic, R. Luterstein, B. Maffei, S. Marnieros, S. Masi, A. Mattei, A. May, M. McCulloch, M. C. Medina, L. Mele, S. Melhuish, A. Mennella, L. Montier, L. M. Mundo, J. A. Murphy, J. D. Murphy, E. Olivieri, A. Paiella, F. Pajot, A. Passerini, H. Pastoriza, A. Pelosi, C. Perbost, O. Perdereau, F. Pezzotta, F. Piacentini, M. Piat, L. Piccirillo, G. Pisano, G. Polenta, D. Prêle, R. Puddu, D. Rambaud, P. Ringegni, G. E. Romero, M. Salatino, A. Schillaci, C. G. Scóccola, S. Scully, S. Spinelli, M. Stolpovskiy, F. Suarez, A. Tartari, J.-P. Thermeau, P. Timbie, S. A. Torchinsky, M. Tristram, V. Truongcanh, C. Tucker, G. Tucker, S. Vanneste, D. Viganò, N. Vittorio, F. Voisin, B. Watson, F. Wicek, M. Zannoni, A. Zullo

Proceedings Volume 10708, 107082B (2018) https://doi.org/10.1117/12.2313332

KEYWORDS: Polarization, Sensors, Calibration, Switches, Mirrors, Optical filters, Fringe analysis, Manufacturing, Interferometers, Anisotropy

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QUBIC, the Q & U Bolometric Interferometer for Cosmology, is a novel ground-based instrument that has been designed to measure the extremely faint B-mode polarisation anisotropy of the cosmic microwave background at intermediate angular scales (multipoles of 𝑙 = 30 − 200). Primordial B-modes are a key prediction of Inflation as they can only be produced by gravitational waves in the very early universe. To achieve this goal, QUBIC will use bolometric interferometry, a technique that combines the sensitivity of an imager with the systematic error control of an interferometer. It will directly observe the sky through an array of 400 back-to-back entry horns whose signals will be superimposed using a quasi-optical beam combiner. The resulting interference fringes will be imaged at 150 and 220 GHz on two focal planes, each tiled with NbSi Transition Edge Sensors, cooled to 320 mK and read out with time-domain multiplexing. A dichroic filter placed between the optical combiner and the focal planes will select the two frequency bands. A very large receiver cryostat will cool the optical and detector stages to 40 K, 4 K, 1 K and 320 mK using two pulse tube coolers, a novel 4He sorption cooler and a double-stage 3He/4He sorption cooler. Polarisation modulation and selection will be achieved using a cold stepped half-wave plate (HWP) and polariser, respectively, in front of the sky-facing horns. A key feature of QUBIC’s ability to control systematic effects is its ‘self-calibration’ mode where fringe patterns from individual equivalent baselines can be compared. When observing, however, all the horns will be open simultaneously and we will recover a synthetic image of the sky in the I, Q and U Stokes’ parameters. The synthesised beam pattern has a central peak of approximately 0.5 degrees in width, with secondary peaks further out that are damped by the 13-degree primary beam of the horns. This is Module 1 of QUBIC which will be installed in Argentina, near the city of San Antonio de los Cobres, at the Alto Chorrillos site (4869 m a.s.l.), Salta Province. Simulations have shown that this first module could constrain the tensor-to-scalar ratio down to σ(r) = 0.01 after a two-year survey. We aim to add further modules in the future to increase the angular sensitivity and resolution of the instrument. The QUBIC project is proceeding through a sequence of steps. After an initial successful characterisation of the detection chain, a technological demonstrator is being assembled to validate the full instrument design and to test it electrically, thermally and optically.

The technical demonstrator is a scaled-down version of Module 1 in terms of the number of detectors, input horns and pulse tubes and a reduction in the diameter of the combiner mirrors and filters, but is otherwise similar. The demonstrator will be upgraded to the full module in 2019. In this paper we give an overview of the QUBIC project and instrument.

Proceedings Article | 9 July 2018 Paper

Paper

Simulations and performance of the QUBIC optical beam combiner

C. O'Sullivan, D. Burke, D. Gayer, J. D. Murphy, S. Scully, M. De Leo, M. De Petris, A. Mattei, A. Zullo, A. Mennella, M. Zannoni, N. Bleurvacq, C. Chapron, J.-Ch. Hamilton, M. Piat, P. Ade, G. Amico, D. Auguste, J. Aumont, S. Banfi, G. Barbarán, P. Battaglia, E. Battistelli, A. Baù, B. Bélier, D. Bennett, L. Bergé, J.-Ph. Bernard, M. Bersanelli, M.-A. Bigot-Sazy, J. Bonaparte, J. Bonis, G. Bordier, E. Bréelle, E. Bunn, D. Buzi, A. Buzzelli, F. Cavaliere, P. Chanial, R. Charlassier, F. Columbro, G. Coppi, A. Coppolecchia, F. Couchot, R. D'Agostino, G. D’Alessandro, P. de Bernardis, G. De Gasperis, A. Di Donato, L. Dumoulin, A. Etchegoyen, A. Fasciszewski, C. Franceschet, M. M. Gamboa Lerena, B. García, X. Garrido, M. Gaspard, A. Gault, M. Gervasi, M. Giard, Y. Giraud-Héraud, M. Gómez Berisso, M. González, M. Gradziel, L. Grandsire, E. Guerrard, D. Harari, V. Haynes, S. Henrot-Versillé, D. T. Hoang, F. Incardona, E. Jules, J. Kaplan, A. Korotkov, C. Kristukat, L. Lamagna, S. Loucatos, T. Louis, A. Lowitz, V. Lukovic, R. Luterstein, B. Maffei, S. Marnieros, S. Masi, A. May, M. McCulloch, M. C. Medina, L. Mele, S. Melhuish, L. Montier, L. Mundo, J. A. Murphy, E. Olivieri, A. Paiella, F. Pajot, A. Passerini, H. Pastoriza, A. Pelosi, C. Perbost, O. Perdereau, F. Pezzotta, F. Piacentini, L. Piccirillo, G. Pisano, G. Polenta, D. Prêle, R. Puddu, D. Rambaud, P. Ringegni, G. E. Romero, M. Salatino, A. Schillaci, C. Scóccola, S. Spinelli, M. Stolpovskiy, F. Suarez, A. Tartari, J.-P. Thermeau, P. Timbie, S. Torchinsky, M. Tristram, V. Truongcanh, C. Tucker, G. Tucker, S. Vanneste, D. Viganò, N. Vittorio, F. Voisin, B. Watson, F. Wicek

Proceedings Volume 10708, 107082I (2018) https://doi.org/10.1117/12.2313256

KEYWORDS: Mirrors, Imaging systems, Optical simulations, Sensors, Bolometers, Staring arrays, Fringe analysis, Polarization, 3D modeling, Zemax

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QUBIC, the Q & U Bolometric Interferometer for Cosmology, is a novel ground-based instrument that aims to measure the extremely faint B-mode polarisation anisotropy of the cosmic microwave background at intermediate angular scales (multipoles of 𝑙 = 30 − 200). Primordial B-modes are a key prediction of Inflation as they can only be produced by gravitational waves in the very early universe. To achieve this goal, QUBIC will use bolometric interferometry, a technique that combines the sensitivity of an imager with the immunity to systematic effects of an interferometer. It will directly observe the sky through an array of back-to-back entry horns whose beams will be superimposed using a cooled quasioptical beam combiner. Images of the resulting interference fringes will be formed on two focal planes, each tiled with transition-edge sensors, cooled down to 320 mK. A dichroic filter placed between the optical combiner and the focal planes will select two frequency bands (centred at 150 GHz and 220 GHz), one frequency per focal plane. Polarization modulation will be achieved using a cold stepped half-wave plate (HWP) and polariser in front of the sky-facing horns.

The full QUBIC instrument is described elsewhere^1,2,3,4; in this paper we will concentrate in particular on simulations of the optical combiner (an off-axis Gregorian imager) and the feedhorn array. We model the optical performance of both the QUBIC full module and a scaled-down technological demonstrator which will be used to validate the full instrument design. Optical modelling is carried out using full vector physical optics with a combination of commercial and in-house software. In the high-frequency channel we must be careful to consider the higher-order modes that can be transmitted by the horn array. The instrument window function is used as a measure of performance and we investigate the effect of, for example, alignment and manufacturing tolerances, truncation by optical components and off-axis aberrations. We also report on laboratory tests carried on the QUBIC technological demonstrator in advance of deployment to the observing site in Argentina.

Proceedings Article | 6 July 2018 Paper

Paper

The performance of the ATHENA X-ray Integral Field Unit

Philippe Peille, Roland den Hartog, Claudio Macculi, Marco Barbera, Simone Lotti, Edoardo Cucchetti, Christian Kirsch, Thomas Dauser, Joern Wilms, Simon Bandler, Stephen Smith, Brian Jackson, Hervé Geoffray, Jean-Michel Mesnager, François Pajot, Didier Barret, Thien Lam-Trong, Jan-Willem den Herder, Luigi Piro

Proceedings Volume 10699, 106994K (2018) https://doi.org/10.1117/12.2313720

KEYWORDS: X-rays, Sensors, Quantum efficiency, Mirrors, Optical filters, Image resolution, Contamination, Electronics, Device simulation, Performance modeling

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Proceedings Article | 6 July 2018 Paper

Paper

Testing the X-IFU calibration requirements: an example for quantum efficiency and energy resolution

Edoardo Cucchetti, François Pajot, Etienne Pointecouteau, Philippe Peille, Gabriele Betancourt-Martinez, Stephen Smith, Marco Barbera, Megan Eckart, Simon Bandler, Caroline Kilbourne, Massimo Cappi, Didier Barret

Proceedings Volume 10699, 106994O (2018) https://doi.org/10.1117/12.2312188

KEYWORDS: Quantum efficiency, Calibration, Sensors, Error analysis, X-rays

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Proceedings Article | 6 July 2018 Paper

Paper

Simulating x-ray observations of galaxy clusters with the x-ray integral field unit onboard the ATHENA mission

Edoardo Cucchetti, Etienne Pointecouteau, Philippe Peille, Nicolas Clerc, Elena Rasia, Veronica Biffi, Stefano Borgani, Klaus Dolag, Jörn Wilms, François Pajot, Didier Barret

Proceedings Volume 10699, 106994L (2018) https://doi.org/10.1117/12.2311957

KEYWORDS: X-rays, Galaxy groups and clusters, Computer simulations, Device simulation, Chemical elements

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Proceedings Article | 6 July 2018 Paper

Paper

Energy scale calibration and drift correction of the X-IFU

Edoardo Cucchetti, Megan Eckart, Philippe Peille, Cor de Vries, François Pajot, Etienne Pointecouteau, Maurice Leutenegger, Caroline Kilbourne, Frederick Porter

Proceedings Volume 10699, 106994M (2018) https://doi.org/10.1117/12.2312170

KEYWORDS: Calibration, Error analysis, X-rays

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Proceedings Article | 6 July 2018 Paper

Paper

Reproducibility and monitoring of the instrumental particle background for the x-ray integral field unit

E. Cucchetti, E. Pointecouteau, D. Barret, S. Lotti, C. Macculi, S. Molendi, F. Pajot, P. Peille, L. Piro, G. Pratt

Proceedings Volume 10699, 106994N (2018) https://doi.org/10.1117/12.2312179

KEYWORDS: Error analysis, Particles, X-rays, Sensors

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Proceedings Article | 6 July 2018 Paper

Paper

Numerical simulation and validation of ATHENA/X-IFU/digital readout electronics

Paul Gumuchian, François Pajot, Laurent Ravera, Etienne Pointecouteau, Antoine Clénet, Bertrand Bernard, Christophe Oziol

Proceedings Volume 10699, 106994W (2018) https://doi.org/10.1117/12.2313536

KEYWORDS: Monte Carlo methods, Signal detection, Electronics, Sensors, Device simulation, Signal to noise ratio, Computer architecture, Electronic filtering, Modulation, Interference (communication)

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Proceedings Article | 3 April 2018 Open Access

Open Access

Paper

The PRONAOS telescope

G. Serra, C. Sirmain, J. Lamarre, F. Buisson, I. Ristorcelli, J. Dins, M. Giard, F. Pajor

Proceedings Volume 10570, 1057012 (2018) https://doi.org/10.1117/12.2326476

KEYWORDS: Telescopes, Radon, Space telescopes, Information operations, Scanning probe microscopy, Mirrors, Stars, Neon, Photometry, Rutherfordium

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Proceedings Article | 23 February 2018 Paper

Paper

Optical modelling and analysis of the Q and U bolometric interferometer for cosmology

D. Burke, D. Gayer, E. Kalinauskaite, C. O'Sullivan, J. Murphy, S. Scully, M. De Petris, M. De Leo, A. Mennella, S. Torchinsky, M. Zannoni, G. Amico, D. Auguste, J. Aumont, S. Banfi, G. Barbarán, P. Battaglia, E. Battistelli, A. Baù, B. Bélier, D. Bennett, L. Bergé, J.-Ph. Bernard, M. Bersanelli, M.-A. Bigot-Sazy, N. Bleurvac, J. Bonaparte, J. Bonis, G. Bordier, E. Bréelle, E. Bunn, D. Buzi, A. Buzzelli, F. Cavaliere, P. Chanial, C. Chapron, R. Charlassier, F. Columbro, G. Coppi, A. Coppolecchia, F. Couchot, G. D’Alessandro, R. D'Agostino, P. de Bernardis, G. De Gasperis, A. Di Donato, A.-A. Drilien, Louis Dumoulin, A. Etchegoyen, A. Fasciszewski, C. Franceschet, M. Gamboa-Lerena, B. García, X. Garrido, M. Gaspard, A. Gault, M. Gervasi, M. Giard, Y. Giraud-Héraud, M. Gómez Berisso, M. González, M. Gradziel, L. Grandsire, E. Guerrard, J.-Ch. Hamilton, D. Harari, V. Haynes, S. Henrot-Versillé, D. T. Hoang, N. Holtzer, F. Incardona, E. Jules, J. Kaplan, A. Korotkov, C. Kristukat, L. Lamagna, J. Lande, S. Loucatos, T. Louis, A. Lowitz, V. Lukovic, R. Luterstein, Bruno Maffei, S. Marnieros, S. Masi, A. Mattei, A. May, M. McCulloch, M. Medina, L. Mele, S. Melhuish, L. Mundo, L. Montier, J. A. Murphy, D. Néel, E. Olivieri, A. Paiella, F. Pajot, A. Passerini, H. Pastoriza, A. Pelosi, C. Perbost, O. Perdereau, F. Pezzotta, F. Piacentini, M. Piat, L. Piccirillo, G. Pisano, G. Polenta, D. Prêle, R. Puddu, D. Rambaud, O. Rigaut, P. Ringegni, G. Romero, M. Salatino, A. Schillaci, C. Scóccola, S. Spinelli, M. Stolpovskiy, F. Suarez, A. Tartari, J.-P. Thermeau, P. Timbie, M. Tristram, V. Truongcanh, G. Tucker, C. Tucker, D. Viganò, N. Vittorio, F. Voisin, B. Watson, F. Wicek, A. Zullo

Proceedings Volume 10531, 105310G (2018) https://doi.org/10.1117/12.2287158

KEYWORDS: Calibration, Mirrors, Modeling, Polarization, Tolerancing, Optical simulations, Near field optics, Interferometers, Point spread functions

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Proceedings Article | 20 November 2017 Open Access

Open Access

Paper

Pilot, a balloon borne experiment underground tests

C. Engel, C. Marty, B. Mot, J.-Ph. Bernard, I. Ristorcelli, G. Otrio, B. Leriche, Y. Longval, F. Pajot, G. Roudil, A. Caillat, J. Dubois, M. Bouzit, V. Buttice, T. Camus

Proceedings Volume 10565, 1056506 (2017) https://doi.org/10.1117/12.2309168

KEYWORDS: Mirrors, Photometry, Image quality, 3D metrology, Polarizers, Polarization, Temperature metrology, Collimation, Astronomical imaging, Wave plates

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Proceedings Article | 17 November 2017 Open Access

Open Access

Paper

PILOT: optical performance and end-to-end characterisation

Y. Longval, R. Misawa, P. Ade, Y. André, P. de Bernardis, F. Bousquet, M. Bouzit, V. Buttice, M. Charra, B. Crane, J. Dubois, C. Engel, M. Griffin, P. Hargrave, B. Leriche, S. Maestre, C. Marty, W. Marty, S. Masi, B. Mot, J. Narbonne, F. Pajot, G. Pisano, N. Ponthieu, I. Ristorcelli, L. Rodriguez, G. Roudil, O. Simonella, M. Salatino, G. Savini, C. Tucker, J.-P. Bernard

Proceedings Volume 10563, 105635X (2017) https://doi.org/10.1117/12.2304278

KEYWORDS: Point spread functions, Polarization, Mirrors, Photometry, Polarizers, Collimators, Sensors, Optical testing, Space telescopes, Telescopes

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PILOT (Polarized Instrument for the Long-wavelength Observations of the Tenuous ISM), is a balloon-borne astronomy experiment dedicated to study the polarization of dust emission from the diffuse ISM in our Galaxy [1]. The observations of PILOT have two major scientific objectives. Firstly, they will allow us to constrain the large-scale geometry of the magnetic field in our Galaxy and to study in details the alignment properties of dust grains with respect to the magnetic field. In this domain, the measurements of PILOT will complement those of the Planck satellite at longer wavelengths. In particular, they will bring information at a better angular resolution, which is critical in crowded regions such as the Galactic plane. They will allow us to better understand how the magnetic field is shaping the ISM material on large scale in molecular clouds, and the role it plays in the gravitational collapse leading to star formation. Secondly, the PILOT observations will allow us to measure for the first time the polarized dust emission towards the most diffuse regions of the sky, where the measurements are the most easily interpreted in terms of the physics of dust. In this particular domain, PILOT will play a role for future CMB missions similar to that played by the Archeops experiment for Planck. The results of PILOT will allow us to gain knowledge about the magnetic properties of dust grains and about the structure of the magnetic field in the diffuse ISM that is necessary to a precise foreground subtraction in future polarized CMB measurements. The PILOT measurements, combined with those of Planck at longer wavelengths, will therefore allow us to further constrain the dust models. The outcome of such studies will likely impact the instrumental and technical choices for the future space missions dedicated to CMB polarization.

The PILOT instrument will allow observations in two photometric channels at wavelengths 240 μm and 550 μm, with an angular resolution of a few arcminutes. We will make use of large format bolometer arrays, developed for the PACS instrument on board the Herschel satellite. With 1024 detectors per photometric channel and photometric band optimized for the measurement of dust emission, PILOT is likely to become the most sensitive experiment for this type of measurements. The PILOT experiment will take advantage of the large gain in sensitivity allowed by the use of large format, filled bolometer arrays at frequencies more favorable to the detection of dust emission.

This paper presents the optical design, optical characterization and its performance. We begin with a presentation of the instrument and the optical system and then we summarise the main optical tests performed. In section III, we present preliminary end-to-end test results.

Proceedings Article | 25 September 2017 Open Access

Open Access

Paper

Pilot optical alignment and its in flight performances

B. Mot, Y. Longval, P. Ade, Y. André, J. Aumont, L. Baustista, J.-Ph. Bernard, N. Bray, P. de Bernardis, O. Boulade, F. Bousquet, M. Bouzit, V. Buttice, A Caillat, M. Charra, M. Chaigneau, C. Coudournac, B. Crane, J.-P. Crussaire, F. Douchin, E. Doumayrou, J. Dubois, C. Engel, P. Etcheto, P. Gélot, M. Griffin, G. Foenard, S. Grabarnik, P. Hargrave, A. Hughes, R. Laureijs, Y. Lepennec, B Leriche, S. Maestre, B. Maffei, J. Martignac, C. Marty, W. Marty, S. Masi, F. Mirc, R. Misawa, J. Montel, L. Montier, J. Narbonne, J.-M. Nicot, F. Pajot, G. Parot, E. Pérot, J. Pimentao, G. Pisano, N. Ponthieu, I. Ristorcelli, L. Rodriguez, G. Roudil, M. Salatino, G. Savini, O. Simonella, M. Saccoccio, P. Tapie, J. Tauber, J.-P. Torre, C. Tucker, G. Versepuech

Proceedings Volume 10562, 105624C (2017) https://doi.org/10.1117/12.2297590

KEYWORDS: Mirrors, Telescopes, Space telescopes, Optical alignment, Photometry, Astronomical imaging, Point spread functions, Thermography, Image quality, Thermal modeling

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Proceedings Article | 17 August 2016 Paper

Paper

The Athena X-ray Integral Field Unit (X-IFU)

Didier Barret, Thien Lam Trong, Jan-Willem den Herder, Luigi Piro, Xavier Barcons, Juhani Huovelin, Richard Kelley, J. Miguel Mas-Hesse, Kazuhisa Mitsuda, Stéphane Paltani, Gregor Rauw, Agata Rożanska, Joern Wilms, Marco Barbera, Enrico Bozzo, Maria Teresa Ceballos, Ivan Charles, Anne Decourchelle, Roland den Hartog, Jean-Marc Duval, Fabrizio Fiore, Flavio Gatti, Andrea Goldwurm, Brian Jackson, Peter Jonker, Caroline Kilbourne, Claudio Macculi, Mariano Mendez, Silvano Molendi, Piotr Orleanski, François Pajot, Etienne Pointecouteau, Frederick Porter, Gabriel Pratt, Damien Prêle, Laurent Ravera, Etienne Renotte, Joop Schaye, Keisuke Shinozaki, Luca Valenziano, Jacco Vink, Natalie Webb, Noriko Yamasaki, Françoise Delcelier-Douchin, Michel Le Du, Jean-Michel Mesnager, Alice Pradines, Graziella Branduardi-Raymont, Mauro Dadina, Alexis Finoguenov, Yasushi Fukazawa, Agnieszka Janiuk, Jon Miller, Yaël Nazé, Fabrizio Nicastro, Salvatore Sciortino, Jose Miguel Torrejon, Hervé Geoffray, Isabelle Hernandez, Laure Luno, Philippe Peille, Jérôme André, Christophe Daniel, Christophe Etcheverry, Emilie Gloaguen, Jérémie Hassin, Gilles Hervet, Irwin Maussang, Jérôme Moueza, Alexis Paillet, Bruno Vella, Gonzalo Campos Garrido, Jean-Charles Damery, Chantal Panem, Johan Panh, Simon Bandler, Jean-Marc Biffi, Kevin Boyce, Antoine Clénet, Michael DiPirro, Pierre Jamotton, Simone Lotti, Denis Schwander, Stephen Smith, Bert-Joost van Leeuwen, Henk van Weers, Thorsten Brand, Beatriz Cobo, Thomas Dauser, Jelle de Plaa, Edoardo Cucchetti

Proceedings Volume 9905, 99052F (2016) https://doi.org/10.1117/12.2232432

KEYWORDS: X-rays, Sensors, Spectral resolution, Stars, Electronics, Galactic astronomy, Iron, Calibration, Signal to noise ratio, Staring arrays

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Proceedings Article | 29 July 2016 Paper

Paper

PILOT optical alignment

Y. Longval, B. Mot, P. Ade, Y. André, J. Aumont, L. Baustista, J.-Ph. Bernard, N. Bray, P. de Bernardis, O. Boulade, F. Bousquet, M. Bouzit, V. Buttice, A. Caillat, M. Charra, M. Chaigneau, B. Crane, J.-P. Crussaire, F. Douchin, E. Doumayrou, J.-P. Dubois, C. Engel, P. Etcheto, P. Gélot, M. Griffin, G. Foenard, S. Grabarnik, P.. Hargrave, A. Hughes, R. Laureijs, Y. Lepennec, B. Leriche, S. Maestre, B. Maffei, J. Martignac, C. Marty, W. Marty, S. Masi, F. Mirc, R. Misawa, J. Montel, L. Montier, J. Narbonne, J-M. Nicot, F. Pajot, G. Parot, E. Pérot, J. Pimentao, G. Pisano, N. Ponthieu, I. Ristorcelli, L. Rodriguez, G. Roudil, M. Salatino, G. Savini, O. Simonella, M. Saccoccio, P. Tapie, J. Tauber, J.-P. Torre, C. Tucker

Proceedings Volume 9904, 990458 (2016) https://doi.org/10.1117/12.2232892

KEYWORDS: Optical alignment, 3D metrology, Space telescopes, Mirrors, Photometry, Telescopes, Thermography, Spherical lenses, Thermal modeling, Point spread functions

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Proceedings Article | 19 July 2016 Paper

Paper

Inflight performance of the PILOT balloon-borne experiment

J.-Ph. Bernard, P. Ade, Y. André, J. Aumont, L. Bautista, N. Bray, P. de Bernardis, O. Boulade, F. Bousquet, M. Bouzit, V. Buttice, A. Caillat, M. Charra, M. Chaigneau, B. Crane, J.-P. Crussaire, F. Douchin, E. Doumayrou, J. Dubois, C. Engel, P. Etcheto, P. Gélot, M. Griffin, G. Foenard, S. Grabarnik, P. Hargrave, A. Hughes, R. Laureijs, Y. Lepennec, B. Leriche, Y. Longval, S. Maestre, B. Maffei, J. Martignac, C. Marty, W. Marty, S. Masi, F. Mirc, R. Misawa, J. Montel, L. Montier, B. Mot, J. Narbonne, J-M. Nicot, F. Pajot, G. Parot, E. Pérot, J. Pimentao, G. Pisano, N. Ponthieu, I. Ristorcelli, L. Rodriguez, G. Roudil, M. Salatino, G. Savini, O. Simonella, M. Saccoccio, P. Tapie, J. Tauber, J.-P. Torre, C. Tucker

Proceedings Volume 9914, 99140W (2016) https://doi.org/10.1117/12.2231872

KEYWORDS: Polarization, Astronomy, Sensors, Calibration, Staring arrays, Point spread functions, Bolometers, Saturn, Sun, Signal detection

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Proceedings Article | 19 July 2016 Paper

Paper

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

S. Scully, D. Burke, C. O'Sullivan, D. Gayer, M. Gradziel, J. A. Murphy, M. De Petris, D. Buzi, M. Zannoni, A Mennella, M. Gervasi, A. Tartari, B. Maffei, J. Aumont, S. Banfi, P. Battaglia, E. Battistelli, A. Baù, B. Bélier, D. Bennet, L. Bergé, J.-Ph. Bernard, M. Bersanelli, M.-A. Bigot-Sazy, N. Bleurvacq, G. Bordier, J. Brossard, E. Bunn, D. Cammileri, F. Cavaliere, P. Chanial, C. Chapron, A. Coppolecchia, F. Couchot, G. D'Alessandro, P. De Bernardis, T. Decourcelle, F. Del Torto, L. Dumoulin, C. Franceschet, A. Gault, A. Ghribi, M. Giard, Y. Giraud-Héraud, L. Grandsire, J. Hamilton, V. Haynes, S. Henrot-Versillé, N. Holtzer, J. Kaplan, A. Korotkov, J. Lande, A. Lowitz, S. Marnieros, J. Martino, S. Masi, Mark McCulloch, Simon Melhuish, L. Montier, D. Néel, M. Ng, F. Pajot, A. Passerini, C. Perbost, O. Perdereau, F. Piacentini, M. Piat, L. Piccirillo, G. Pisano, D. Prêle, R. Puddu, D. Rambaud, O. Rigaut, M. Salatino, A. Schillaci, M. Stolpovskiy, P. Timbie, M. Tristram, G. Tucker, D. Viganò, F. Voisin, B. Watson

Proceedings Volume 9914, 99142S (2016) https://doi.org/10.1117/12.2231717

KEYWORDS: Modeling, Modeling, Polarization, Anisotropy, Optical design, Point spread functions, Mirrors, Staring arrays, Bolometers, Off axis mirrors, Sensors

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Proceedings Article | 24 July 2014 Paper

Paper

The X-ray Integral Field Unit (X-IFU) for Athena

Laurent Ravera, Didier Barret, Jan Willem den Herder, Luigi Piro, Rodolphe Clédassou, Etienne Pointecouteau, Philippe Peille, Francois Pajot, Monique Arnaud, Claude Pigot, Lionel Duband, Christophe Cara, Roland den Hartog, Luciano Gottardi, Hiroki Akamatsu, Jan van der Kuur, Henk van Weers, Jelle de Plaa, Claudia Macculi, Simone Lotti, Guido Torrioli, Flavio Gatti, Luca Valenziano, Marco Barbera, Xavier Barcons, María Teresa Ceballos, Lourdes Fàbrega, José Miguel Mas-Hesse, Mathew Page, Phillip Guttridge, Richard Willingale, Stéphane Paltani, Ludovic Genolet, Enrico Bozzo, Gregor Rauw, Etienne Renotte, Jörn Wilms, Christian Schmid

Proceedings Volume 9144, 91442L (2014) https://doi.org/10.1117/12.2055884

KEYWORDS: Sensors, X-rays, Electronics, Particles, Electroluminescent displays, Spectral resolution, Image resolution, X-ray detectors, Photons, Digital electronics

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Proceedings Article | 23 July 2014 Paper

Paper

PILOT: a balloon-borne experiment to measure the polarized FIR emission of dust grains in the interstellar medium

R. Misawa, J-Ph. Bernard, P. Ade, Y. André, P. de Bernardis, M. Bouzit, M. Charra, B. Crane, J. Dubois, C. Engel, M. Griffin, P. Hargrave, B. Leriche, Y. Longval, S. Maes, C. Marty, W. Marty, S. Masi, B. Mot, J. Narbonne, F. Pajot, G. Pisano, N. Ponthieu, I. Ristorcelli, L. Rodriguez, G. Roudil, M. Salatino, G. Savini, C. Tucker

Proceedings Volume 9153, 91531H (2014) https://doi.org/10.1117/12.2055506

KEYWORDS: Polarization, Point spread functions, Bolometers, Sensors, Polarizers, Magnetism, Mirrors, Collimators, Photometry, Galactic astronomy

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Proceedings Article | 23 July 2014 Paper

Paper

The NIKA 2013-2014 observation campaigns: control of systematic effects and results

A. Catalano, R. Adam, A. Adane, P. Ade, P. André, A. Beelen, B. Belier, A. Benoît, A. Bideaud, N. Billot, N. Boudou, O. Bourrion, M. Calvo, G. Coiffard, B. Comis, A. D'Addabbo, F.-X. Désert, S. Doyle, J. Goupy, C. Kramer, S. Leclercq, J.-F. Macías-Pérez, J. Martino, P. Mauskopf, F. Mayet, A. Monfardini, F. Pajot, E. Pascale, L. Perotto, E. Pointecouteau, N. Ponthieu, V. Revéret, A. Ritacco, L. Rodriguez, G. Savini, K. Schuster, A. Sievers, C. Tucker, R. Zylka

Proceedings Volume 9153, 915302 (2014) https://doi.org/10.1117/12.2055403

KEYWORDS: Sensors, Polarization, Calibration, Telescopes, Cameras, Control systems, Modulation, Galaxy groups and clusters, Field programmable gate arrays, Opacity

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Proceedings Article | 27 September 2012 Paper

Paper

The PILOT experiment for the measurement of interstellar dust polarization : the camera ground calibration

V. Buttice, F. Pajot, J.-P. Bernard, M. Bouzit, A. Caillat, B. Crane, M. Chaigneau, J.-P. Dubois, B. Leriche, Y. Longval, C. Marty

Proceedings Volume 8452, 84520U (2012) https://doi.org/10.1117/12.925187

KEYWORDS: Cameras, Polarization, Sensors, Calibration, Spectral calibration, Mirrors, Telescopes, Bolometers, Optical benches, Optical filters

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Proceedings Article | 5 November 2010 Paper

Paper

Large submillimeter and millimeter detector arrays for astronomy: development of NbSi superconducting bolometers

F. Pajot, D. Prele, J. Zhong, Y. Atik, B. Bélier, L. Bergé, G. Bordier, E. Bréelle, L. Dumoulin, C. Evesque, F. Gadot, B. Leriche, S. Marnieros, J. Martino, M. Piat, S.-C. Shi, F. Voisin

Proceedings Volume 7854, 78540U (2010) https://doi.org/10.1117/12.870328

KEYWORDS: Antennas, Bolometers, Sensors, Astronomy, Cryogenics, Integrated circuits, Capacitors, Multiplexing, Detector development, Multiplexers

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Proceedings Article | 18 July 2008 Paper

Paper

Bolometer arrays development in the DCMB French collaboration

Michel Piat, Y. Atik, B. Bélier, A. Benoit, L. Bergé, A. Bounab, E. Bréelle, P. Camus, S. Collin, F. X. Désert, L. Dumoulin, C. Evesque, H. Geoffray, M. Giard, C. Hoffmann, Y. Jin, G. Klisnick, S. Marnieros, A. Monfardini, F. Pajot, D. Prêle, M. Redon, D. Santos, D. Stanescu, G. Sou, F. Voisin

Proceedings Volume 7020, 70200G (2008) https://doi.org/10.1117/12.789703

KEYWORDS: Bolometers, Superconductors, Multiplexing, Niobium, Cryogenics, Sensors, Amplifiers, Microfabrication, Antennas, Standards development

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Proceedings Article | 18 July 2008 Paper

Paper

Characterization of NbSi films for TES bolometers

Y. Atik, F. Pajot, C. Evesque, B. Leriche, B. Bélier, L. Dumoulin, L. Bergé, M. Piat, E. Bréelle, D. Prêle, F. Voisin

Proceedings Volume 7020, 70202A (2008) https://doi.org/10.1117/12.790332

KEYWORDS: Bolometers, Sensors, Niobium, Resistance, Superconductors, Technetium, Multiplexing, Thin films, Bridges, Temperature metrology

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Proceedings Article | 6 July 2006 Paper

Paper

First astronomical images with a multiplexed superconducting bolometer array

Dominic Benford, Johannes Staguhn, Troy Ames, Christine Allen, James Chervenak, Catherine Kennedy, Sebastien Lefranc, Stephen Maher, S. Harvey Moseley, François Pajot, Cyrille Rioux, Richard Shafer, George Voellmer

Proceedings Volume 6275, 62751C (2006) https://doi.org/10.1117/12.672365

KEYWORDS: Bolometers, Fabry–Perot interferometers, Sensors, Superconductors, Multiplexing, Calibration, Astronomy, Data acquisition, Spectral resolution, Detector arrays

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Proceedings Article | 6 July 2006 Paper

Paper

ArTeMiS: filled bolometer arrays for next-generation sub-mm telescopes

M. Talvard, P. André, L. Rodriguez, V. Minier, A. Benoit, B. Leriche, F. Pajot, L. Vigroux, P. Agnèse, O. Boulade, E. Doumayrou, D. Dubreuil, G. Durand, P. Gallais, B. Horeau, P. Lagage, J. Le-Pennec, M. Lortholary, J. Martignac, V. Revéret, N. Schneider, J. Stutzki, C. Veyssière, C. Walter

Proceedings Volume 6275, 627503 (2006) https://doi.org/10.1117/12.671133

KEYWORDS: Bolometers, Telescopes, Space telescopes, Cameras, Control systems, Stars, Galactic astronomy, Cryogenics, Detector arrays, Spatial resolution

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Proceedings Article | 10 June 2006 Paper

Paper

Performances of the Planck-HFI cryogenic thermal control system

Christophe Leroy, Antoine Arondel, Jean-Philippe Bernard, Hervé Carfantan, Cydalise Dumesnil, Jean-Jacques Fourmond, Guy Guyot, Jean-Michel Lamarre, François Pajot, Michel Piat, Jean-Loup Puget, Jean-Francois Trouilhet, Sylvain Varesi

Proceedings Volume 6265, 62650H (2006) https://doi.org/10.1117/12.670845

KEYWORDS: Cryogenics, Control systems, Bolometers, Temperature metrology, Satellites, Space telescopes, Sensors, Thermography, Electronic filtering, Anisotropy

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Proceedings Article | 8 October 2004 Paper

Paper

FIBRE: a broadband submillimeter spectrometer using superconducting bolometer arrays

Johannes Staguhn, Dominic Benford, Francois Pajot, Troy Ames, Christine Allen, James Chervenak, Sebastien Lefranc, Steven Maher, S. Moseley, Thomas Phillips, Cyrille Rioux, Richard Shafer, George Voellmer

Proceedings Volume 5498, (2004) https://doi.org/10.1117/12.552128

KEYWORDS: Sensors, Bolometers, Fabry–Perot interferometers, Spectroscopy, Spectral resolution, Astronomy, Superconductors, Multiplexers, Observatories, Galactic astronomy

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Proceedings Article | 15 October 2003 Paper

Paper

Design and performances of a cryogenic Fabry-Perot for submillimeter astronomy

Francois Pajot, Bruno Maffei, Dominic Benford, Dale Fixsen, Sebastien Lefranc, S. Moseley, Cyrille Rioux, Rick Shafer, Gaurav Shah, Johannes Staguhn

Proceedings Volume 5172, (2003) https://doi.org/10.1117/12.506858

KEYWORDS: Fabry–Perot interferometers, Sensors, Spectroscopy, Spectral resolution, Control systems, Astronomy, Electronics, Servomechanisms, Superconductors, Actuators

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Proceedings Article | 17 February 2003 Paper

Paper

Astronomical demonstration of superconducting bolometer arrays

Johannes Staguhn, Dominic Benford, Francois Pajot, Troy Ames, James Chervenak, Erich Grossman, Kent Irwin, Bruno Maffei, S. Moseley, Thomas Phillips, Carl Reintsema, Cyrille Rioux, Richard Shafer, George Voellmer

Proceedings Volume 4855, (2003) https://doi.org/10.1117/12.459377

KEYWORDS: Sensors, Bolometers, Fabry–Perot interferometers, Astronomy, Superconductors, Spectral resolution, Spectroscopy, Multiplexing, Multiplexers, Observatories

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Proceedings Article | 20 June 2000 Paper

Paper

Submillimeter and far-infrared experiment (SAFIRE): a PI class instrument for SOFIA

Richard Shafer, Samuel Moseley, Peter Ade, Dominic Benford, G. Bjoraker, Eli Dwek, David Neufeld, Francois Pajot, Thomas Phillips, Gordon Stacey

Proceedings Volume 4014, (2000) https://doi.org/10.1117/12.389126

KEYWORDS: Sensors, Bolometers, Spectral resolution, Telescopes, Mirrors, Detector arrays, Superconductors, Silicon, Clouds, Cryogenics

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Proceedings Article | 5 January 1993 Paper

Paper

Design of a far-infrared Fabry-Perot spectrometer for astronomy

Michel Josse, Francois Pajot, Bruno Maffei

Proceedings Volume 1762, (1993) https://doi.org/10.1117/12.138987

KEYWORDS: Spectroscopy, Infrared technology, Capacitors, Astronomy, Sensors, Gold, Quartz, Space telescopes, Telescopes, Infrared spectroscopy

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Proceedings Article | 1 November 1990 Paper

Paper

French activity in infrared astronomy from stratospheric balloons

Jean-Michel Lamarre, Guy Serra, Francois Pajot, Martin Giard, P. Encrenaz

Proceedings Volume 1341, (1990) https://doi.org/10.1117/12.23090

KEYWORDS: Astronomy, Infrared astronomy, Telescopes, Satellites, Infrared radiation, Space telescopes, Molecules, Photometry, Heterodyning, Spectroscopy

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Showing 5 of 42 publications

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