Dr. Marcin L. Gradziel Profile

Dr. Marcin L. Gradziel

Lecturer at National Univ. of Ireland, Maynooth

SPIE Involvement:

Author

Publications (34)

Proceedings Article | 31 August 2022 Poster + Paper

Development of a Fourier transform spectrometer for the calibration of THz on-chip spectrometers

Dale Mercado, Serena Tramm, Ryan Wills, Michael Zemcov, Peter Barry, Elyssa Brooks, Jeffrey Filippini, Marcin Gradziel, Rong Nie, Erik Shirokoff, Neal Trappe

Proceedings Volume 12190, 121902D (2022) https://doi.org/10.1117/12.2630221

KEYWORDS: Fourier transforms, Spectroscopy, Cryogenics, Mirrors, Beam splitters, Calibration, Sensors, Far infrared, Waveguides, Terahertz radiation

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Proceedings Article | 31 August 2022 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 | 21 December 2020 Presentation + Paper

LiteBIRD satellite: JAXA's new strategic L-class mission for all-sky surveys of cosmic microwave background polarization

M. Hazumi, P.A.R. Ade, A. Adler, E. Allys, K. Arnold, D. Auguste, J. Aumont, R. Aurlien, J. Austermann, C. Baccigalupi, A. Banday, R. Banjeri, R. Barreiro, S. Basak, J. Beall, D. Beck, S. Beckman, J. Bermejo, P. de Bernardis, M. Bersanelli, J. Bonis, J. Borrill, F. Boulanger, S. Bounissou, M. Brilenkov, M. Brown, M. Bucher, E. Calabrese, P. Campeti, A. Carones, F. Casas, A. Challinor, V. Chan, K. Cheung, Y. Chinone, J. Cliche, L. Colombo, F. Columbro, J. Cubas, A. Cukierman, D. Curtis, G. D'Alessandro, N. Dachlythra, M. De Petris, C. Dickinson, P. Diego-Palazuelos, M. Dobbs, T. Dotani, L. Duband, S. Duff, J. Duval, K. Ebisawa, T. Elleflot, H. Eriksen, J. Errard, T. Essinger-Hileman, F. Finelli, R. Flauger, C. Franceschet, U. Fuskeland, M. Galloway, K. Ganga, J. Gao, R. Genova-Santos, M. Gerbino, M. Gervasi, T. Ghigna, E. Gjerløw, M. Gradziel, J. Grain, F. Grupp, A. Gruppuso, J. Gudmundsson, T. de Haan, N. Halverson, P. Hargrave, T. Hasebe, M. Hasegawa, M. Hattori, S. Henrot-Versillé, D. Herman, D. Herranz, C. Hill, G. Hilton, Y. Hirota, E. Hivon, R. Hlozek, Y. Hoshino, E. de la Hoz, J. Hubmayr, K. Ichiki, T. Iida, H. Imada, K. Ishimura, H. Ishino, G. Jaehnig, T. Kaga, S. Kashima, N. Katayama, A. Kato, T. Kawasaki, R. Keskitalo, T. Kisner, Y. Kobayashi, N. Kogiso, A. Kogut, K. Kohri, E. Komatsu, K. Komatsu, K. Konishi, N. Krachmalnicoff, I. Kreykenbohm, C. L. Kuo, A. Kushino, L. Lamagna, J. Lanen, M. Lattanzi, A. Lee, C. Leloup, F. Levrier, E. Linder, T. Louis, G. Luzzi, T. Maciaszek, B. Maffei, D. Maino, M. Maki, S. Mandelli, E. Martinez-Gonzalez, S. Masi, T. Matsumura, A. Mennella, M. Migliaccio, Y. Minami, K. Mitsuda, J. Montgomery, L. Montier, G. Morgante, B. Mot, Y. Murata, J. Murphy, M. Nagai, Y. Nagano, T. Nagasaki, R. Nagata, S. Nakamura, T. Namikawa, P. Natoli, S. Nerval, T. Nishibori, H. Nishino, F. Noviello, C. O'Sullivan, H. Ogawa, S. Oguri, H. Ohsaki, I. Ohta, N. Okada, L. Pagano, A. Paiella, D. Paoletti, G. Patanchon, J. Peloton, F. Piacentini, G. Pisano, G. Polenta, D. Poletti, T. Prouvé, G. Puglisi, D. Rambaud, C. Raum, S. Realini, M. Reinecke, M. Remazeilles, A. Ritacco, G. Roudil, J. Rubino-Martin, M. Russell, H. Sakurai, Y. Sakurai, M. Sandri, M. Sasaki, G. Savini, D. Scott, J. Seibert, Y. Sekimoto, B. Sherwin, K. Shinozaki, M. Shiraishi, P. Shirron, G. Signorelli, G. Smecher, S. Stever, R. Stompor, H. Sugai, S. Sugiyama, A. Suzuki, J. Suzuki, T. Svalheim, E. Switzer, R. Takaku, H. Takakura, S. Takakura, Y. Takase, Y. Takeda, A. Tartari, E. Taylor, Y. Terao, H. Thommesen, K. Thompson, B. Thorne, T. Toda, M. Tomasi, M. Tominaga, N. Trappe, M. Tristram, M. Tsuji, M. Tsujimoto, C. Tucker, J. Ullom, G. Vermeulen, P. Vielva, F. Villa, M. Vissers, N. Vittorio, I. Wehus, J. Weller, B. Westbrook, J. Wilms, B. Winter, E. Wollack, N. Yamasaki, T. Yoshida, J. Yumoto, M. Zannoni, A. Zonca

Proceedings Volume 11443, 114432F (2020) https://doi.org/10.1117/12.2563050

KEYWORDS: Polarization, Satellites, Microwave radiation, Telescopes, Algorithm development, Refractor telescopes, Rockets, Quantum physics, Astrophysics, Spatial resolution

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Proceedings Article | 16 December 2020 Presentation + Paper

Concept design of low frequency telescope for CMB B-mode polarization satellite LiteBIRD

Y. Sekimoto, P. A. Ade, A. Adler, E. Allys, K. Arnold, D. Auguste, J. Aumont, R. Aurlien, J. Austermann, C. Baccigalupi, A. Banday, R. Banerji, R. Barreiro, S. Basak, J. Beall, D. Beck, S. Beckman, J. Bermejo, P. de Bernardis, M. Bersanelli, J. Bonis, J. Borrill, F. Boulanger, S. Bounissou, M. Brilenkov, M. Brown, M. Bucher, E. Calabrese, P. Campeti, A. Carones, F. Casas, A. Challinor, V. Chan, K. Cheung, Y. Chinone, J. F. Cliche, L. Colombo, F. Columbro, J. Cubas, A. Cukierman, D. Curtis, G. D'Alessandro, N. Dachlythra, M. De Petris, C. Dickinson, P. Diego-Palazuelos, M. Dobbs, T. Dotani, L. Duband, S. Duff, J. M. Duval, K. Ebisawa, T. Elleflot, H. Eriksen, J. Errard, T. Essinger-Hileman, F. Finelli, R. Flauger, C. Franceschet, U. Fuskeland, M. Galloway, K. Ganga, J. R. Gao, R. Genova-Santos, M. Gerbino, M. Gervasi, T. Ghigna, E. Gjerløw, M. Gradziel, J. Grain, F. Grupp, A. Gruppuso, J. Gudmundsson, T. de Haan, N. Halverson, P. Hargrave, T. Hasebe, M. Hasegawa, M. Hattori, M. Hazumi, S. Henrot-Versillé, D. Herman, D. Herranz, C. Hill, G. Hilton, Y. Hirota, E. Hivon, R. Hlozek, Y. Hoshino, E. de la Hoz, J. Hubmayr, K. Ichiki, T. iida, H. Imada, K. Ishimura, H. Ishino, G. Jaehnig, T. Kaga, S. Kashima, N. Katayama, A. Kato, T. Kawasaki, R. Keskitalo, T. Kisner, Y. Kobayashi, N. Kogiso, A. Kogut, K. Kohri, E. Komatsu, K. Komatsu, K. Konishi, N. Krachmalnicoff, I. Kreykenbohm, C. L. Kuo, A. Kushino, L. Lamagna, J. Lanen, M. Lattanzi, A. Lee, C. Leloup, F. Levrier, E. Linder, T. Louis, G. Luzzi, T. Maciaszek, B. Maffei, D. Maino, M. Maki, S. Mandelli, E. Martinez-Gonzalez, S. Masi, T. Matsumura, A. Mennella, M. Migliaccio, Y. Minanmi, K. Mitsuda, J. Montgomery, L. Montier, G. Morgante, B. Mot, Y. Murata, J. A. Murphy, M. Nagai, Y. Nagano, T. Nagasaki, R. Nagata, S. Nakamura, T. Namikawa, P. Natoli, S. Nerval, T. Nishibori, H. Nishino, C. O'Sullivan, H. Ogawa, S. Oguri, H. Ohsaki, I. Ohta, N. Okada, L. Pagano, A. Paiella, D. Paoletti, G. Patanchon, J. Peloton, F. Piacentini, G. Pisano, G. Polenta, D. Poletti, T. Prouvé, G. Puglisi, D. Rambaud, C. Raum, S. Realini, M. Reinecke, M. Remazeilles, A. Ritacco, G. Roudil, J. A. Rubino-Martin, M. Russell, H. Sakurai, Y. Sakurai, M. Sandri, M. Sasaki, G. Savini, D. Scott, J. Seibert, B. Sherwin, K. Shinozaki, M. Shiraishi, P. Shirron, G. Signorelli, G. Smecher, S. Stever, R. Stompor, H. Sugai, S. Sugiyama, A. Suzuki, J. Suzuki, T. Svalheim, E. Switzer, R. Takaku, H. Takakura, S. Takakura, Y. Takase, Y. Takeda, A. Tartari, E. Taylor, Y. Terao, H. Thommesen, K. Thompson, B. Thorne, T. Toda, M. Tomasi, M. Tominaga, N. Trappe, M. Tristram, M. Tsuji, M. Tsujimoto, C. Tucker, J. Ullom, G. Vermeulen, P. Vielva, F. Villa, M. Vissers, N. Vittorio, I. Wehus, J. Weller, B. Westbrook, J. Wilms, B. Winter, E. Wollack, N. Yamasaki, T. Yoshida, J. Yumoto, M. Zannoni, A. Zonca

Proceedings Volume 11453, 1145310 (2020) https://doi.org/10.1117/12.2561841

KEYWORDS: Telescopes, Polarization, Optical instrument design, Satellites, Stray light, Antennas, Reflectors, Microwave radiation, Spatial resolution, Diffraction

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Proceedings Article | 15 December 2020 Presentation + Paper

Overview of the medium and high frequency telescopes of the LiteBIRD space mission

L. Montier, B. Mot, P. de Bernardis, B. Maffei, G. Pisano, F. Columbro, J. Gudmundsson, S. Henrot-Versillé, L. Lamagna, J. Montgomery, T. Prouvé, M. Russell, G. Savini, S. Stever, K. Thompson, M. Tsujimoto, C. Tucker, B. Westbrook, P. A. R. Ade, A. Adler, E. Allys, K. Arnold, D. Auguste, J. Aumont, R. Aurlien, J. Austermann, C. Baccigalupi, A. Banday, R. Banerji, R. Barreiro, S. Basak, J. Beall, D. Beck, S. Beckman, J. Bermejo, M. Bersanelli, J. Bonis, J. Borrill, F. Boulanger, S. Bounissou, M. Brilenkov, M. Brown, M. Bucher, E. Calabrese, P. Campeti, A. Carones, F. Casas, A. Challinor, V. Chan, K. Cheung, Y. Chinone, J. Cliche, L. Colombo, J. Cubas, A. Cukierman, D. Curtis, G. D'Alessandro, N. Dachlythra, M. De Petris, C. Dickinson, P. Diego-Palazuelos, M. Dobbs, T. Dotani, L. Duband, S. Duff, J. Duval, K. Ebisawa, T. Elleflot, H. Eriksen, J. Errard, T. Essinger-Hileman, F. Finelli, R. Flauger, C. Franceschet, U. Fuskeland, M. Galloway, K. Ganga, J. Gao, R. Genova-Santos, M. Gerbino, M. Gervasi, T. Ghigna, E. Gjerløw, M. Gradziel, J. Grain, F. Grupp, A. Gruppuso, T. de Haan, N. Halverson, P. Hargrave, T. Hasebe, M. Hasegawa, M. Hattori, M. Hazumi, D. Herman, D. Herranz, C. Hill, G. Hilton, Y. Hirota, E. Hivon, R. Hlozek, Y. Hoshino, E. de la Hoz, J. Hubmayr, K. Ichiki, T. Iida, H. Imada, K. Ishimura, H. Ishino, G. Jaehnig, T. Kaga, S. Kashima, N. Katayama, A. Kato, T. Kawasaki, R. Keskitalo, T. Kisner, Y. Kobayashi, N. Kogiso, A. Kogut, K. Kohri, E. Komatsu, K. Komatsu, K. Konishi, N. Krachmalnicoff, I. Kreykenbohm, C. Kuo, A. Kushino, J. Lanen, M. Lattanzi, A. Lee, C. Leloup, F. Levrier, E. Linder, T. Louis, G. Luzzi, T. Maciaszek, D. Maino, M. Maki, S. Mandelli, E. Martinez-Gonzalez, S. Masi, T. Matsumura, A. Mennella, M. Migliaccio, Y. Minami, K. Mitsuda, G. Morgante, Y. Murata, J. Murphy, M. Nagai, Y. Nagano, T. Nagasaki, R. Nagata, S. Nakamura, T. Namikawa, P. Natoli, S. Nerval, T. Nishibori, H. Nishino, C. O'Sullivan, H. Ogawa, S. Oguri, H. Ohsaki, I. Ohta, N. Okada, L. Pagano, A. Paiella, D. Paoletti, G. Patanchon, J. Peloton, F. Piacentini, G. Polenta, D. Poletti, G. Puglisi, D. Rambaud, C. Raum, S. Realini, M. Reinecke, M. Remazeilles, A. Ritacco, G. Roudil, J. Rubino-Martin, H. Sakurai, Y. Sakurai, M. Sandri, M. Sasaki, D. Scott, J. Seibert, Y. Sekimoto, B. Sherwin, K. Shinozaki, M. Shiraishi, P. Shirron, G. Signorelli, G. Smecher, R. Stompor, H. Sugai, S. Sugiyama, A. Suzuki, J. Suzuki, T. Svalheim, E. Switzer, R. Takaku, H. Takakura, S. Takakura, Y. Takase, Y. Takeda, A. Tartari, E. Taylor, Y. Terao, H. Thommesen, B. Thorne, T. Toda, M. Tomasi, M. Tominaga, N. Trappe, M. Tristram, M. Tsuji, J. Ullom, G. Vermeulen, P. Vielva, F. Villa, M. Vissers, N. Vittorio, I. Wehus, J. Weller, J. Wilms, B. Winter, E. Wollack, N. Yamasaki, T. Yoshida, J. Yumoto, M. Zannoni, A. Zonca

Proceedings Volume 11443, 114432G (2020) https://doi.org/10.1117/12.2562243

KEYWORDS: Telescopes, Space operations, Refractor telescopes, Sensors, Microwave radiation, Polarization, Cryogenics, Wave plates, Optical components, Lenses

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Proceedings Article | 13 December 2020 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

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 | 9 July 2018 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

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 | 9 July 2018 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

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

Next generation sub-millimetre wave focal plane array coupling concepts: an ESA TRP project to develop multichroic focal plane pixels for future CMB polarisation experiments

N. Trappe, M. Bucher, P. de Bernardis, J. Delabrouille, P. Deo, M. De Petris, S. Doherty, A. Ghribi, M. Gradziel, L. Kuzmin, B. Maffei, S. Masi, J. A. Murphy, F. Noviello, C. O'Sullivan, L. Pagano, F. Piacentini, M. Piat, G. Pisano, M. Robinson, R. Stompor, A. Tartari, A. Traini, M. van der Vorst, P. Verhoeve, C. Zhu

Proceedings Volume 10708, 107082H (2018) https://doi.org/10.1117/12.2313480

KEYWORDS: Antennas, Polarization, Sensors, Telescopes, Staring arrays, Manufacturing, Prototyping, Cryogenics, Bolometers, Optical filters

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Proceedings Article | 23 February 2018 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 | 24 February 2017 Paper

Radiation patterns of multimode feed-horn-coupled bolometers for FAR-IR space applications

Eimante Kalinauskaite, J. Anthony Murphy, Ian McAuley, Neal Trappe, Darragh McCarthy, Colm Bracken, Stephen Doherty, Marcin Gradziel, Créidhe O'Sullivan, Daniel Wilson, Tully Peacocke, Bruno Maffei, Jean-Michel Lamarre, Peter A. Ade, Giorgio Savini

Proceedings Volume 10103, 101030N (2017) https://doi.org/10.1117/12.2249869

KEYWORDS: Bolometers, Sensors, Waveguides, Extremely high frequency, Terahertz radiation, Beam controllers, Black bodies, Thin films, Computer simulations, Waveguide modes, Electronic filtering, Scattering, Matrices, Optical simulations, Thermal modeling, Free space

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Proceedings Article | 19 July 2016 Paper

Modeling multimode feed-horn coupled bolometers for millimeter-wave and terahertz astronomical instrumentation

Eimante Kalinauskaite, Anthony Murphy, Ian McAuley, Neil Trappe, Colm Bracken, Darragh McCarthy, Stephen Doherty, Marcin Gradziel, Creidhe O'Sullivan, Bruno Maffei, Jean-Michel Lamarre, Peter A. Ade, Giorgio Savini

Proceedings Volume 9914, 99142R (2016) https://doi.org/10.1117/12.2231444

KEYWORDS: Sensors, Bolometers, Waveguides, Scattering, Antennas, Matrices, Waveguide modes, Systems modeling, Resistance, Absorption

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Proceedings Article | 19 July 2016 Paper

Next generation sub-millimeter wave focal plane array coupling concepts: an ESA TRP project to develop multichroic focal plane pixels for future CMB polarization experiments

N. Trappe, M. Bucher, P. De Bernardis, J. Delabrouille, P. Deo, M. DePetris, S. Doherty, A. Ghribi, M. Gradziel, L. Kuzmin, B. Maffei, S. Mahashabde, S. Masi, J. Murphy, F. Noviello, C. O'Sullivan, L. Pagano, F. Piacentini, M. Piat, G. Pisano, M. Robinson, R. Stompor, A. Tartari, M. van der Vorst, P. Verhoeve

Proceedings Volume 9914, 991412 (2016) https://doi.org/10.1117/12.2231267

KEYWORDS: Sensors, Antennas, Staring arrays, Prototyping, Polarization, Signal detection, Manufacturing, Telescopes, Telescope design, Optics manufacturing

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Proceedings Article | 19 July 2016 Paper

Optical characterisation and analysis of multi-mode pixels for use in future far infrared telescopes

Darragh McCarthy, Neil Trappe, J. Anthony Murphy, Stephen Doherty, Marcin Gradziel, Créidhe O'Sullivan, Michael Audley, Gert de Lange, Maarten van der Vorst

Proceedings Volume 9914, 991413 (2016) https://doi.org/10.1117/12.2231710

KEYWORDS: Far infrared, Far infrared, Sensors, Free space, Waveguides, Waveguide modes, Matrices, Wave propagation, Scattering, Modeling, Systems modeling

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In this paper we present the development and verification of feed horn simulation code based on the mode- matching technique to simulate the electromagnetic performance of waveguide based structures of rectangular cross-section. This code is required to model multi-mode pyramidal horns which may be required for future far infrared (far IR) space missions where wavelengths in the range of 30 to 200 µm will be analysed. Multi-mode pyramidal horns can be used effectively to couple radiation to sensitive superconducting devices like Kinetic Inductance Detectors (KIDs) or Transition Edge Sensor (TES) detectors. These detectors could be placed in integrating cavities (to further increase the efficiency) with an absorbing layer used to couple to the radiation. The developed code is capable of modelling each of these elements, and so will allow full optical characterisation of such pixels and allow an optical efficiency to be calculated effectively. As the signals being measured at these short wavelengths are at an extremely low level, the throughput of the system must be maximised and so multi-mode systems are proposed. To this end, the focal planes of future far IR missions may consist of an array of multi-mode rectangular feed horns feeding an array of, for example, TES devices contained in individual integrating cavities. Such TES arrays have been fabricated by SRON Groningen and are currently undergoing comprehensive optical, electrical and thermal verification. In order to fully understand and validate the optical performance of the receiver system, it is necessary to develop comprehensive and robust optical models in parallel. We outline the development and verification of this optical modelling software by means of applying it to a representative multi-mode system operating at 150 GHz in order to obtain sufficiently short execution times so as to comprehensively test the code. SAFARI (SPICA FAR infrared Instrument) is a far infrared imaging grating spectrometer, to be proposed as an ESA M5 mission. It is planned for this mission to be launched on board the proposed SPICA (SPace Infrared telescope for Cosmology and Astrophysics) mission, in collaboration with JAXA. SAFARI is planned to operate in the 1.5-10 THz band, focussing on the formation and evolution of galaxies, stars and planetary systems. The pixel that drove the development of the techniques presented in this paper is typical of one option that could be implemented in the SAFARI focal plane, and so the ability to accurately understand and characterise such pixels is critical in the design phase of the next generation of far IR telescopes.

Proceedings Article | 19 July 2016 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 | 23 July 2014 Paper

Optical modelling of far-infrared astronomical instrumentation exploiting multimode horn antennas

Créidhe O'Sullivan, J. Anthony Murphy, Ian Mc Auley, Daniel Wilson, Marcin Gradziel, Neil Trappe, Fiachra Cahill, T. Peacocke, G. Savini, K. Ganga

Proceedings Volume 9153, 91532V (2014) https://doi.org/10.1117/12.2055853

KEYWORDS: Scattering, Waveguides, Telescopes, Antennas, Sensors, Waveguide modes, Modeling, Laser scattering, Bolometers, Astronomical imaging

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Proceedings Article | 23 July 2014 Paper

Efficient algorithms for optimising the optical performance of profiled smooth walled horns for future CMB and Far-IR missions

Darragh McCarthy, Neil Trappe, J. Anthony Murphy, Créidhe O'Sullivan, Marcin Gradziel, Stephen Doherty, Colm Bracken, Niall Tynan, Arturo Polegre, Peter Huggard

Proceedings Volume 9153, 915316 (2014) https://doi.org/10.1117/12.2056336

KEYWORDS: Phase measurement, Waveguides, Antennas, Scattering, Polarization, Sensors, Microwave radiation, Manufacturing, Bolometers, Throat

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Astronomical observations in the far-infrared are critical for investigation of cosmic microwave background (CMB) radiation and the formation and evolution of planets, stars and galaxies. In the case of space telescope receivers, a strong heritage exists for corrugated horn antenna feeds to couple the far-infrared signals to the detectors mounted in a waveguide or cavity structure. Such antenna feeds have been utilized, for example, in the Planck satellite in both single-mode channels for the observation of the CMB and the multi-mode channels optimized for the detection of foreground sources. Looking to the demands of the future space missions, it is clear that the development of new technology solutions for the optimization and simplification of horn antenna structures will be required for large arrays. Horn antennas will continue to offer excellent control of beam and polarization properties for CMB polarisation experiments satisfying stringent requirements on low sidelobe levels, symmetry, and low cross polarization in large arrays. Similarly for far infrared systems, multi-mode horn and waveguide cavity structures are proposed to enhance optical coupling of weak signals for cavity coupled bolometers. In this paper we present a computationally efficient approach for modelling and optimising horn character-istics. We investigate smooth-walled horns that have an equivalent optical performance to that of corrugated horns traditionally used for CMB measurements. We discuss the horn optimisation process and the algorithms available to maximise performance of a merit parameter such as low cross polarisation or high Gaussicity. A single moded horn resulting from this design process has been constructed and experimentally verified in the W band. The results of the measurement campaign are presented in this paper and compared to the simulated results, showing a high level of agreement in co and cross polarisation radiation patterns, with low levels of integrated cross polar power. For future Far IR receivers using waveguide bounded bolometers and absorbers, an optimisation of the waveg-uide structures and absorber location within the integrating cavity is critical to maximise coupling performance particularly for multimoded systems. We outline the benefit of using multi-moded horns in focal plane arrays and illustrate the increased optical sensitivity associated with a many-moded approach, which may be optimized for coupling to particular incident beams.

Proceedings Article | 23 July 2014 Paper

Refractive telescope systems for future cosmic microwave background polarimetry experiments

Peter Hargrave, Giorgio Savini, Marcin Gradziel, Neil Trappe, Niall Tynan, Massimo Candotti, Anthony Challinor, Stig Sørenson, Peter Ade, Rashmi Sudiwala, Maarten van der Vorst

Proceedings Volume 9153, 915314 (2014) https://doi.org/10.1117/12.2054634

KEYWORDS: Telescopes, Coating, Polarization, Space telescopes, Reflection, Polarimetry, Sensors, Refractor telescopes, Optical instrument design, Manufacturing

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Proceedings Article | 7 March 2014 Paper

Techniques for the modelling of QUBIC: a next-generation quasi-optical bolometric interferometer for cosmology

S. Scully, D. Gayer, D. Bennet, C. O'Sullivan, M. Gradziel

Proceedings Volume 8985, 898516 (2014) https://doi.org/10.1117/12.2036259

KEYWORDS: Polarization, Neodymium, Scattering, Terahertz radiation, Microwave radiation, Modeling, Interferometers, Optical simulations, Polarizers, Beam shaping

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Proceedings Article | 27 March 2013 Paper

Efficient horn antennas for next-generation terahertz and millimeter-wave space telescopes

Darragh McCarthy, Neil Trappe, Anthony Murphy, Colm Bracken, Stephen Doherty, Marcin Gradziel, Créidhe O'Sullivan

Proceedings Volume 8624, 862413 (2013) https://doi.org/10.1117/12.2001268

KEYWORDS: Scattering, Matrices, Waveguides, Antennas, Polarization, Space telescopes, Genetic algorithms, Wave propagation, Microwave radiation, Signal detection

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Proceedings Article | 15 July 2010 Paper

Efficient optical modelling for far-infrared astronomical instrumentation

Créidhe O'Sullivan, J. Anthony Murphy, Neil Trappe, Marcin Gradziel, Tully Peacocke, Stafford Withington

Proceedings Volume 7741, 77410R (2010) https://doi.org/10.1117/12.857243

KEYWORDS: Telescopes, Sensors, Scattering, Modeling, Antennas, Waveguides, Wave propagation, Systems modeling, Waveguide modes, Laser scattering

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Proceedings Article | 9 February 2009 Paper

Optical modelling using Gaussian beam modes for the terahertz band

Créidhe O'Sullivan, John Murphy, Marcin Gradziel, John Lavelle, Tully Peacocke, Neil Trappe, Gareth Curran, David White, Stafford Withington

Proceedings Volume 7215, 72150P (2009) https://doi.org/10.1117/12.810807

KEYWORDS: Gaussian beams, Mirrors, Modeling, Beam propagation method, Diffractive optical elements, Optical simulations, Scattering, Wave propagation, Modal analysis, Optical design

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Proceedings Article | 18 July 2008 Paper

Optical modeling for millimeter and submillimeter-wave systems

John Murphy, Marcin Gradziel, Creidhe O'Sullivan, Tully Peacocke, Neil Trappe, David White, Stafford Withington

Proceedings Volume 7020, 70200W (2008) https://doi.org/10.1117/12.788912

KEYWORDS: Scattering, Systems modeling, Matrices, Modal analysis, Gaussian beams, Wave propagation, Laser scattering, Beam analyzers, Beam propagation method, Radio propagation

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Proceedings Article | 18 July 2008 Paper

Modeling the quasi-optical performance of CMB astronomical interferometers

Gareth Curran, Marcin Gradziel, Créidhe O'Sullivan, J. Anthony Murphy, Andrei Korotkov, Siddharth Malu, Peter Timbie, Gregory Tucker

Proceedings Volume 7020, 70202O (2008) https://doi.org/10.1117/12.790500

KEYWORDS: Mirrors, Scattering, Interferometers, Systems modeling, Sensors, Antennas, Waveguides, Polarization, Telescopes, Wave propagation

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Proceedings Article | 14 February 2008 Paper

Gaussian beam mode analysis of phase gratings

Robert May, J. Anthony Murphy, Creidhe O'Sullivan, Marcin Gradziel, Neil Trappe

Proceedings Volume 6893, 68930G (2008) https://doi.org/10.1117/12.763624

KEYWORDS: Gaussian beams, Diffraction gratings, Mirrors, Beam analyzers, Optical design, Diffraction, Beam propagation method, Laser scattering, Scattering, Phase retrieval

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Proceedings Article | 1 February 2007 Paper

The quasi-optical performance of CMB astronomical telescopes

Créidhe O'Sullivan, J. Anthony Murphy, Vladimir Yurchenko, Gary Cahill, Gareth Curran, Marcin Gradziel, John Lavelle, Fabio Noviello

Proceedings Volume 6472, 647202 (2007) https://doi.org/10.1117/12.696551

KEYWORDS: Telescopes, Polarization, Mirrors, Lenses, Sensors, Zemax, Space telescopes, Radio propagation, Antennas, Anisotropy

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Proceedings Article | 1 February 2007 Paper

Analysis of millimeter-wave imaging and detection

W. Lanigan, E. Butler, E. Duffy, I. Mc Auley, L. Young, M. Gradziel, C. O'Sullivan, J. Murphy, R. May, N. Trappe

Proceedings Volume 6472, 64720C (2007) https://doi.org/10.1117/12.700409

KEYWORDS: Sensors, Reflection, Terahertz radiation, Waveguides, Absorption, Millimeter wave imaging, Near field optics, Mirrors, Phase measurement, Signal detection

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Proceedings Article | 1 February 2007 Paper

Modelling of the optical performance of millimeter-wave instruments in MODAL

Marcin Gradziel, Creidhe O'Sullivan, John Murphy, Gary Cahill, Gareth Curran, Clem Pryke, Walter Gear, Sarah Church

Proceedings Volume 6472, 64720D (2007) https://doi.org/10.1117/12.700680

KEYWORDS: Mirrors, Modeling, Lenses, Dielectrics, Telescopes, Distortion, Beam propagation method, Sensors, Wave propagation, Visualization

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Proceedings Article | 8 December 2004 Paper

Modeling of millimetre-wave and terahertz imaging systems

Marcin Gradziel, David White, Neal Trappe, Ronan Mahon, Timothy Finn, Stafford Withington, Anthony Murphy, Creidhe O'Sullivan

Proceedings Volume 5619, (2004) https://doi.org/10.1117/12.578674

KEYWORDS: Systems modeling, Modeling, Diffraction, Gaussian beams, Radio propagation, Terahertz radiation, Mirrors, Computer aided design, Telescopes, Millimeter wave imaging

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Proceedings Article | 8 October 2004 Paper

Developments in quasi-optical design for THz

Creidhe O'Sullivan, J. Anthony Murphy, Gary Cahill, Marcin Gradziel, Neil Trappe, David White, Vladimir Yurchenko, Stafford Withington, Willem Jellema

Proceedings Volume 5498, (2004) https://doi.org/10.1117/12.551660

KEYWORDS: Terahertz radiation, Radio propagation, Wave propagation, Systems modeling, Gaussian beams, Optical design, Computer aided design, Modeling, Diffraction, Mirrors

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Proceedings Article | 17 November 2003 Paper

Electron-photon coincidence measurements of polarization of radiation from cadmium atoms excited to 5¹P₁ state by electron impact

M. Piwinski, D. Dziczek, R. Srivastava, M. Gradziel, S. Chwirot

Proceedings Volume 5258, (2003) https://doi.org/10.1117/12.544412

KEYWORDS: Scattering, Polarization, Chemical species, Cadmium, Photon polarization, Polarizers, Radiation effects, Physics, Photon counting, Quartz

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Showing 5 of 34 publications

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