المؤلفون: C. O'Sullivan, M. De Petris, G. Amico, E. S. Battistelli, D. Burke, D. Buzi, C. Chapron, L. Conversi, G. D'Alessandro, P. de Bernardis, M. De Leo, D. Gayer, L. Grandsire, J. -Ch. Hamilton, S. Marnieros, S. Masi, A. Mattei, A. Mennella, L. Mousset, J. D. Murphy, A. Pelosi, M. Perciballi, M. Piat, S. Scully, A. Tartari, S. A. Torchinsky, F. Voisin, M. Zannoni, A. Zullo, P. Ade, J. G. Alberro, A. Almela, L. H. Arnaldi, D. Auguste, J. Aumont, S. Azzoni, S. Banfi, B. Bélier, A. Bau, D. Bennett, L. Berge, J. -Ph. Bernard, M. Bersanelli, M. -A. Bigot-Sazy, J. Bonaparte, J. Bonis, E. Bunn, F. Cavaliere, P. Chanial, R. Charlassier, A. C. Cobos Cerutti, F. Columbro, A. Coppolecchia, G. De Gasperis, 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, M. Gervasi, M. Giard, V. Gilles, Y. Giraud-Heraud, M. GomezBerisso, M. Gonzalez, M. Gradziel, M. R. Hampel, D. Harari, S. Henrot-Versille, F. Incardona, E. Jules, J. Kaplan, C. Kristukat, L. Lamagna, S. Loucatos, T. Louis, B. Maffei, W. Marty, A. May, M. McCulloch, L. Mele, D. Melo, L. Montier, L. M. Mundo, J. A. Murphy, F. Nati, E. Olivieri, C. Oriol, A. Paiella, F. Pajot, A. Passerini, H. Pastoriza, C. Perbost, F. Pezzotta, F. Piacentini, L. Piccirillo, G. Pisano, M. Platino, G. Polenta, D. Prele, R. Puddu, D. Rambaud, P. Ringegni, G. E. Romero, E. Rasztocky, J. M. Salum, A. Schillaci, C. Scoccola, S. Spinelli, G. Stankowiak, M. Stolpovskiy, A. D. Supanitsky, J. -P. Thermeau, P. Timbie, M. Tomasi, G. Tucker, C. Tucker, D. Vigano, N. Vittorio, F. Wicek, M. Wright

المساهمون: C. O'Sullivan, M.D. Petri, G. Amico, E.S. Battistelli, D. Burke, D. Buzi, C. Chapron, L. Conversi, G. D'Alessandro, P.D. Bernardi, M.D. Leo, D. Gayer, L. Grandsire, J.-. Hamilton, S. Marniero, S. Masi, A. Mattei, A. Mennella, L. Mousset, J.D. Murphy, A. Pelosi, M. Perciballi, M. Piat, S. Scully, A. Tartari, S.A. Torchinsky, F. Voisin, M. Zannoni, A. Zullo, P. Ade, J.G. Alberro, A. Almela, L.H. Arnaldi, D. Auguste, J. Aumont, S. Azzoni, S. Banfi, B. Bélier, A. Bau, D. Bennett, L. Berge, J.-. Bernard, M. Bersanelli, M.-. Bigot-Sazy, J. Bonaparte, J. Boni, E. Bunn, F. Cavaliere, P. Chanial, R. Charlassier, A.C.C. Cerutti, F. Columbro, A. Coppolecchia, G.D. Gasperi, S. Dheilly, C. Duca, L. Dumoulin, A. Etchegoyen, A. Fasciszewski, L.P. Ferreyro, D. Fracchia, C. Franceschet, M.M.G. Lerena, K.M. Ganga, B. García, M.E.G. Redondo, M. Gaspard, M. Gervasi, M. Giard, V. Gille, Y. Giraud-Heraud, M. Gomezberisso, M. Gonzalez, M. Gradziel, M.R. Hampel, D. Harari, S. Henrot-Versille, F. Incardona, E. Jule, J. Kaplan, C. Kristukat, L. Lamagna, S. Loucato, T. Loui, B. Maffei, W. Marty, A. May, M. Mcculloch, L. Mele, D. Melo, L. Montier, L.M. Mundo, J.A. Murphy, F. Nati, E. Olivieri, C. Oriol, A. Paiella, F. Pajot, A. Passerini, H. Pastoriza

مصطلحات موضوعية: CMBR detector, CMBR experiment, CMBR polarisation, gravitational waves and CMBR polarization, Settore FIS/05 - Astronomia e Astrofisica

الوصف: The Q and U Bolometric Interferometer for Cosmology (QUBIC) is a ground-based experiment that aims to detect B-mode polarization anisotropies [1] in the CMB at angular scales around the l similar or equal to 100 recombination peak. Systematic errors make ground-based observations of B modes at millimetre wavelengths very challenging and QUBIC mitigates these problems in a somewhat complementary way to other existing or planned experiments using the novel technique of bolometric interferometry. This technique takes advantage of the sensitivity of an imager and the systematic error control of an interferometer. A cold reflective optical combiner superimposes the re-emitted beams from 400 aperture feedhorns on two focal planes. A shielding system composed of a fixed groundshield, and a forebaffle that moves with the instrument, limits the impact of local contaminants. The modelling, design, manufacturing and preliminary measurements of the optical components are described in this paper.

العلاقة: info:eu-repo/semantics/altIdentifier/wos/WOS:000795606100001; volume:2022; issue:4; firstpage:1; lastpage:30; numberofpages:30; journal:JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS; http://hdl.handle.net/2434/918074Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85129874687

الإتاحة: https://doi.org/10.1088/1475-7516/2022/04/041Test
http://hdl.handle.net/2434/918074Test

المؤلفون: S. A. Torchinsky, J. -Ch. Hamilton, M. Piat, E. S. Battistelli, C. Chapron, G. D'Alessandro, P. de Bernardis, M. De Petris, M. M. Gamboa Lerena, M. González, L. Grandsire, S. Masi, S. Marnieros, A. Mennella, L. Mousset, J. D. Murphy, D. Prêle, G. Stankowiak, C. O'Sullivan, A. Tartari, J. -P. Thermeau, 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, 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, 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. 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, 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

المساهمون: S.A. Torchinsky, J.-. Hamilton, M. Piat, E.S. Battistelli, C. Chapron, G. D'Alessandro, P. de Bernardi, M. De Petri, M.M. Gamboa Lerena, M. González, L. Grandsire, S. Masi, S. Marniero, A. Mennella, L. Mousset, J.D. Murphy, D. Prêle, G. Stankowiak, C. O'Sullivan, A. Tartari, J.-. Thermeau, 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.-. Bernard, M. Bersanelli, M.-. Bigot-Sazy, J. Bonaparte, J. Boni, E. Bunn, D. Burke, D. Buzi, F. Cavaliere, P. Chanial, R. Charlassier, A.C. Cobos Cerutti, F. Columbro, A. Coppolecchia, G. De Gasperi, M. De Leo, S. Dheilly, C. Duca, L. Dumoulin, A. Etchegoyen, A. Fasciszewski, L.P. Ferreyro, D. Fracchia, C. Franceschet, K.M. Ganga, B. García, M.E. García Redondo, M. Gaspard, D. Gayer, M. Gervasi, M. Giard, V. Gille, Y. Giraud-Heraud, M. Gómez Berisso, M. Gradziel, M.R. Hampel, D. Harari, S. Henrot-Versillé, F. Incardona, E. Jule, J. Kaplan, C. Kristukat, L. Lamagna, S. Loucato, T. Loui, B. Maffei, W. Marty, A. Mattei, A. May, M. Mcculloch, L. Mele, D. Melo, 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

مصطلحات موضوعية: CMBR detector, CMBR experiment, CMBR polarisation, gravitational waves and CMBR polarization, Settore FIS/05 - Astronomia e Astrofisica

الوصف: We report on an extensive test campaign of a prototype version of the QUBIC (Q & U Bolometric Interferometer for Cosmology) instrument, carried out at Astroparticle Physics and Cosmology (APC) in Paris. Exploiting the novel concept called bolometric interferometry, QUBIC is designed to measure the CMB polarization at 150 and 220 GHz from a high altitude site at Alto Chorillo, Argentina. The prototype model called QUBIC Technological Demonstrator (QUBIC-TD) operates in a single frequency band (150 GHz) and with a reduced number of baselines, but it contains all the elements of the QUBIC instrument in its final configuration. The test campaign included measurements of the synthesized beam and of the polarization performance, as well as a verification of the interference fringe pattern. A modulated, frequency-tunable millimetre-wave source was placed in the telescope far-field and was used to simulate a point source. The QUBIC-TD field of view was scanned across the source to produce beam maps. Our measurements confirm the frequency-dependent behaviour of the beam profile, which gives QUBIC the possibility to do spectral imaging. The measured polarization performance indicates a cross-polarization leakage less than 0.6%. We also successfully tested the polarization modulation system, which is provided by a rotating half wave plate. We demonstrate the full mapmaking pipeline using data from this measurement campaign, effectively giving an end-to-end checkout of the entire QUBIC system, including all hardware subsystems, their interfaces, and the software to operate the whole system and run the analysis. Our results confirm the viability of bolometric interferometry for measurements of the CMB polarization.

العلاقة: info:eu-repo/semantics/altIdentifier/wos/WOS:000795599000001; volume:2022; issue:4; firstpage:1; lastpage:25; numberofpages:25; journal:JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS; http://hdl.handle.net/2434/918062Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85129622118

الإتاحة: https://doi.org/10.1088/1475-7516/2022/04/036Test
http://hdl.handle.net/2434/918062Test

المؤلفون: F. Cavaliere, A. Mennella, M. Zannoni, P. Battaglia, E. S. Battistelli, P. de Bernardis, D. Burke, G. D'Alessandro, M. De Petris, C. Franceschet, L. Grandsire, J. -Ch. Hamilton, B. Maffei, B. Manzan, S. Marnieros, S. Masi, C. O'Sullivan, A. Passerini, F. Pezzotta, M. Piat, A. Tartari, S. A. Torchinsky, D. Vigan?, F. Voisin, P. Ade, J. G. Alberro, A. Almela, G. Amico, L. H. Arnaldi, D. Auguste, J. Aumont, S. Azzoni, S. Banfi, A. Ba?, B. B??lier, D. Bennett, L. Berg?, J. -Ph. Bernard, M. Bersanelli, M. -A. Bigot-Sazy, J. Bonaparte, J. Bonis, E. Bunn, D. Buzi, 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, M. M. Gamboa Lerena, K. M. Ganga, B. Garc??a, M. E. Garc??a Redondo, M. Gaspard, D. Gayer, M. Gervasi, M. Giard, V. Gilles, Y. Giraud-Heraud, M. G??mez Berisso, M. Gonz??lez, M. Gradziel, M. R. Hampel, D. Harari, S. Henrot-Versill?, F. Incardona, E. Jules, J. Kaplan, C. Kristukat, L. Lamagna, S. Loucatos, T. Louis, W. Marty, A. Mattei, A. May, M. McCulloch, L. Mele, D. Melo, L. Montier, L. Mousset, L. M. Mundo, J. A. Murphy, J. D. Murphy, F. Nati, E. Olivieri, C. Oriol, A. Paiella, F. Pajot, H. Pastoriza, A. Pelosi, C. Perbost, M. Perciballi, F. Piacentini, L. Piccirillo, G. Pisano, M. Platino, G. Polenta, D. Pr??le, R. Puddu, D. Rambaud, E. Rasztocky, P. Ringegni, G. E. Romero, J. M. Salum, A. Schillaci, C. G. Sc??ccola, S. Scully, S. Spinelli, G. Stankowiak, M. Stolpovskiy, A. D. Supanitsky, J. -P. Thermeau, P. Timbie, M. Tomasi, C. Tucker, G. Tucker, N. Vittorio, F. Wicek, M. Wright, A. Zullo

المساهمون: Cavaliere, F., Mennella, A., Zannoni, M., Battaglia, P., Battistelli, E. S., de Bernardis, P., Burke, D., D'Alessandro, G., De Petris, M., Franceschet, C., Grandsire, L., Hamilton, J. -Ch., Maffei, B., Manzan, B., Marnieros, S., Masi, S., O'Sullivan, C., Passerini, A., Pezzotta, F., Piat, M., Tartari, A., Torchinsky, S. A., Vigan??, D., Voisin, F., Ade, P., Alberro, J. G., Almela, A., Amico, G., Arnaldi, L. H., Auguste, D., Aumont, J., Azzoni, S., Banfi, S., Ba??, A., B??lier, B., Bennett, D., Berg??, L., Bernard, J. -Ph., Bersanelli, M., Bigot-Sazy, M. -A., Bonaparte, J., Bonis, J., Bunn, E., Buzi, D., Chanial, P., Chapron, C., Charlassier, R., Cobos Cerutti, A. C., Columbro, F., Coppolecchia, A., De Gasperis, G., De Leo, M., Dheilly, S., Duca, C., Dumoulin, L., Etchegoyen, A., Fasciszewski, A., Ferreyro, L. P., Fracchia, D., Gamboa Lerena, M. M., Ganga, K. M., Garc??a, B., Garc??a Redondo, M. E., Gaspard, M., Gayer, D., Gervasi, M., Giard, M., Gilles, V., Giraud-Heraud, Y., G??mez Berisso, M., Gonz??lez, M., Gradziel, M., Hampel, M. R., Harari, D., Henrot-Versill??, S., Incardona, F., Jules, E., Kaplan, J., Kristukat, C., Lamagna, L., Loucatos, S., Louis, T., Marty, W., Mattei, A., May, A., Mcculloch, M., Mele, L., Melo, D., Montier, L., Mousset, L., Mundo, L. M., Murphy, J. A., Murphy, J. D., Nati, F., Olivieri, E., Oriol, C., Paiella, A., Pajot, F., Pastoriza, H., Pelosi, A.

مصطلحات موضوعية: CMBR detector, CMBR experiment, CMBR polarisation, gravitational waves and CMBR polarization

الوصف: We present the design, manufacturing and performance of the horn-switch system developed for the technological demonstrator of QUBIC (the Q&U Bolometric Interferometer for Cosmology). This system consists of 64 back-to-back dual-band (150 GHz and 220 GHz) corrugated feed-horns interposed with mechanical switches used to select desired baselines during the instrument self-calibration. We manufactured the horns in aluminum platelets milled by photo-chemical etching and mechanically tightened with screws. The switches are based on steel blades that open and close the waveguide between the back-to-back horns and are operated by miniaturized electromagnets. The measured electromagnetic performance of the feedhorns agrees with simulations. In particular we obtained a return loss around -20 dB up to 230 GHz and beam patterns in agreement with single-mode simulations down to -30 dB. The switches for this prototype were designed and built for the 150 GHz band. In this frequency range we find return and insertion losses consistent with expectations (< -25 dB and ∼-0.1 dB, respectively) and an isolation larger than 70 dB. In this paper we also show the current development status of the feedhorn-switch system for the QUBIC full instrument, based on an array of 400 horn-switch assemblies.

العلاقة: info:eu-repo/semantics/altIdentifier/wos/WOS:000795606100004; volume:2022; issue:4; firstpage:040; journal:JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS; http://hdl.handle.net/11573/1652366Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85129871715

الإتاحة: https://doi.org/10.1088/1475-7516/2022/04/040Test
http://hdl.handle.net/11573/1652366Test

المؤلفون: S. Masi, E. S. Battistelli, P. de Bernardis, C. Chapron, F. Columbro, A. Coppolecchia, G. D'Alessandro, M. De Petris, L. Grandsire, J. -Ch. Hamilton, L. Lamagna, S. Marnieros, A. May, L. Mele, A. Mennella, C. O'Sullivan, A. Paiella, F. Piacentini, M. Piat, L. Piccirillo, G. Presta, A. Schillaci, 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, A. Ba?, B. B??lier, D. Bennett, L. Berg?, J. -Ph. Bernard, M. Bersanelli, M. -A. Bigot-Sazy, J. Bonaparte, J. Bonis, E. Bunn, D. Burke, D. Buzi, F. Cavaliere, P. Chanial, R. Charlassier, A. C. Cobos Cerutti, 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. Garc??a, M. E. Garc??a Redondo, M. Gaspard, D. Gayer, M. Gervasi, M. Giard, V. Gilles, Y. Giraud-Heraud, M. G??mez Berisso, M. Gonz??lez, M. Gradziel, M. R. Hampel, D. Harari, S. Henrot-Versill?, F. Incardona, E. Jules, J. Kaplan, C. Kristukat, S. Loucatos, T. Louis, B. Maffei, W. Marty, A. Mattei, M. McCulloch, D. Melo, L. Montier, L. Mousset, L. M. Mundo, J. A. Murphy, J. D. Murphy, F. Nati, E. Olivieri, C. Oriol, F. Pajot, A. Passerini, H. Pastoriza, A. Pelosi, C. Perbost, M. Perciballi, F. Pezzotta, G. Pisano, M. Platino, G. Polenta, D. Pr??le, R. Puddu, D. Rambaud, E. Rasztocky, P. Ringegni, G. E. Romero, J. M. Salum, C. G. Sc??ccola, S. Scully, S. Spinelli, G. Stankowiak, M. Stolpovskiy, A. D. Supanitsky, P. Timbie, M. Tomasi, C. Tucker, G. Tucker, D. Vigan?, N. Vittorio, F. Wicek, M. Wright, A. Zullo

المساهمون: Masi, S., Battistelli, E. S., de Bernardis, P., Chapron, C., Columbro, F., Coppolecchia, A., D'Alessandro, G., De Petris, M., Grandsire, L., Hamilton, J. -Ch., Lamagna, L., Marnieros, S., May, A., Mele, L., Mennella, A., O'Sullivan, C., Paiella, A., Piacentini, F., Piat, M., Piccirillo, L., Presta, G., Schillaci, A., Tartari, A., Thermeau, J. -P., Torchinsky, S. A., Voisin, F., Zannoni, M., Ade, P., Alberro, J. G., Almela, A., Amico, G., Arnaldi, L. H., Auguste, D., Aumont, J., Azzoni, S., Banfi, S., Ba??, A., B??lier, B., Bennett, D., Berg??, L., Bernard, J. -Ph., Bersanelli, M., Bigot-Sazy, M. -A., Bonaparte, J., Bonis, J., Bunn, E., Burke, D., Buzi, D., Cavaliere, F., Chanial, P., Charlassier, R., Cobos Cerutti, A. C., De Gasperis, G., De Leo, M., Dheilly, S., Duca, C., Dumoulin, L., Etchegoyen, A., Fasciszewski, A., Ferreyro, L. P., Fracchia, D., Franceschet, C., Gamboa Lerena, M. M., Ganga, K. M., Garc??a, B., Garc??a Redondo, M. E., Gaspard, M., Gayer, D., Gervasi, M., Giard, M., Gilles, V., Giraud-Heraud, Y., G??mez Berisso, M., Gonz??lez, M., Gradziel, M., Hampel, M. R., Harari, D., Henrot-Versill??, S., Incardona, F., Jules, E., Kaplan, J., Kristukat, C., Loucatos, S., Louis, T., Maffei, B., Marty, W., Mattei, A., Mcculloch, M., Melo, D., Montier, L., Mousset, L., Mundo, L. M., Murphy, J. A., Murphy, J. D., Nati, F., Olivieri, E., Oriol, C., Pajot, F., Passerini, A., Pastoriza, H.

مصطلحات موضوعية: CMBR detector, CMBR experiment, CMBR polarisation, gravitational waves and CMBR polarization

الوصف: Current experiments aimed at measuring the polarization of the Cosmic Microwave Background (CMB) use cryogenic detector arrays with cold optical systems to boost their mapping speed. For this reason, large volume cryogenic systems with large optical windows, working continuously for years, are needed. The cryogenic system of the QUBIC (Q & U Bolometric Interferometer for Cosmology) experiment solves a combination of simultaneous requirements: very large optical throughput (1/440 cm2sr), large volume (1/41 m3) and large mass (1/4165 kg) of the cryogenic instrument. Here we describe its design, fabrication, experimental optimization and validation in the Technological Demonstrator configuration. The QUBIC cryogenic system is based on a large volume cryostat that uses two pulse-tube refrigerators to cool the instrument to 1/43 K. The instrument includes the cryogenic polarization modulator, the corrugated feedhorn array, and the lower temperature stages: a 4He evaporator cooling the interferometer beam combiner to 1/41 K and a 3He evaporator cooling the focal-plane detector arrays to 1/40.3 K. The cryogenic system has been tested and validated for more than 6 months of continuous operation. The detector arrays have reached a stable operating temperature of 0.33 K, while the polarization modulator has operated at a 1/410 K base temperature. The system has been tilted to cover the boresight elevation range 20°-90° without significant temperature variations. The instrument is now ready for deployment to the high Argentinean Andes.

العلاقة: info:eu-repo/semantics/altIdentifier/wos/WOS:000795597300003; volume:2022; issue:4; firstpage:038; journal:JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS; http://hdl.handle.net/11573/1652365Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85129871071

الإتاحة: https://doi.org/10.1088/1475-7516/2022/04/038Test
http://hdl.handle.net/11573/1652365Test

المؤلفون: M. Piat, G. Stankowiak, E. S. 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. Pr??le, 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, A. Ba?, B. B??lier, D. Bennett, L. Berg?, 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. Garc??a, M. E. Garc??a Redondo, M. Gaspard, D. Gayer, M. Gervasi, M. Giard, V. Gilles, Y. Giraud-Heraud, M. G??mez Berisso, M. Gonz??lez, M. Gradziel, M. R. Hampel, D. Harari, S. Henrot-Versill?, 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. 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, E. Rasztocky, P. Ringegni, G. E. Romero, J. M. Salum, A. Schillaci, C. G. Sc??ccola, S. Scully, S. Spinelli, M. Stolpovskiy, A. D. Supanitsky, P. Timbie, M. Tomasi, C. Tucker, G. Tucker, D. Vigan?, N. Vittorio, F. Wicek, M. Wright, A. Zullo

المساهمون: Piat, M., Stankowiak, G., Battistelli, E. S., de Bernardis, P., D'Alessandro, G., De Petris, M., Grandsire, L., Hamilton, J. -Ch., Hoang, T. D., Marnieros, S., Masi, S., Mennella, A., Mousset, L., O'Sullivan, C., Pr??le, D., Tartari, A., Thermeau, J. -P., Torchinsky, S. A., Voisin, F., Zannoni, M., Ade, P., Alberro, J. G., Almela, A., Amico, G., Arnaldi, L. H., Auguste, D., Aumont, J., Azzoni, S., Banfi, S., Ba??, A., B??lier, B., Bennett, D., Berg??, L., Bernard, J. -Ph., Bersanelli, M., Bigot-Sazy, M. -A., Bonaparte, J., Bonis, J., Bunn, E., Burke, D., Buzi, D., Cavaliere, F., Chanial, P., Chapron, C., Charlassier, R., Cobos Cerutti, A. C., Columbro, F., Coppolecchia, A., De Gasperis, G., De Leo, M., Dheilly, S., Duca, C., Dumoulin, L., Etchegoyen, A., Fasciszewski, A., Ferreyro, L. P., Fracchia, D., Franceschet, C., Gamboa Lerena, M. M., Ganga, K. M., Garc??a, B., Garc??a Redondo, M. E., Gaspard, M., Gayer, D., Gervasi, M., Giard, M., Gilles, V., Giraud-Heraud, Y., G??mez Berisso, M., Gonz??lez, M., Gradziel, M., Hampel, M. R., Harari, D., Henrot-Versill??, S., Incardona, F., Jules, E., Kaplan, J., Kristukat, C., Lamagna, L., Loucatos, S., Louis, T., Maffei, B., Marty, W., Mattei, A., May, A., Mcculloch, M., Mele, L., Melo, D., Montier, L., Mundo, L. M., Murphy, J. A., Murphy, J. D., Nati, F., Olivieri, E., Oriol, C., Paiella, A., Pajot, F., Passerini, A., Pastoriza, H., Pelosi, A.

مصطلحات موضوعية: CMBR detector, CMBR experiment, CMBR polarisation, cosmological parameters from CMBR

الوصف: A prototype version of the Q & U bolometric interferometer for cosmology (QUBIC) underwent a campaign of testing in the laboratory at Astroparticle Physics and Cosmology laboratory in Paris (APC). The detection chain is currently made of 256 NbSi transition edge sensors (TES) cooled to 320 mK. The readout system is a 128:1 time domain multiplexing scheme based on 128 SQUIDs cooled at 1 K that are controlled and amplified by a SiGe application specific integrated circuit at 40 K. We report the performance of this readout chain and the characterization of the TES. The readout system has been functionally tested and characterized in the lab and in QUBIC. The low noise amplifier demonstrated a white noise level of 0.3 nV/√Hz. Characterizations of the QUBIC detectors and readout electronics includes the measurement of I-V curves, time constant and the noise equivalent power. The QUBIC TES bolometer array has approximately 80% detectors within operational parameters. It demonstrated a thermal decoupling compatible with a phonon noise of about 5 × 10-17 W/√Hz at 410 mK critical temperature. While still limited by microphonics from the pulse tubes and noise aliasing from readout system, the instrument noise equivalent power is about 2 × 10-16 W/√Hz, enough for the demonstration of bolometric interferometry.

العلاقة: info:eu-repo/semantics/altIdentifier/wos/WOS:000795597300002; volume:2022; issue:4; firstpage:037; journal:JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS; http://hdl.handle.net/11573/1652364Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85129689365

الإتاحة: https://doi.org/10.1088/1475-7516/2022/04/037Test
http://hdl.handle.net/11573/1652364Test

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

المساهمون: F. Cavaliere, A. Mennella, M. Zannoni, P. Battaglia, E.S. Battistelli, P. de Bernardi, D. Burke, G. D'Alessandro, M. De Petri, C. Franceschet, L. Grandsire, J.-. Hamilton, B. Maffei, E. Manzan, S. Marniero, S. Masi, C. O'Sullivan, A. Passerini, F. Pezzotta, M. Piat, A. Tartari, S.A. Torchinsky, D. Viganò, F. Voisin, P. Ade, J.G. Alberro, A. Almela, G. Amico, L.H. Arnaldi, D. Auguste, J. Aumont, S. Azzoni, S. Banfi, A. Baù, B. Bélier, D. Bennett, L. Bergé, J.-. Bernard, M. Bersanelli, M.-. Bigot-Sazy, J. Bonaparte, J. Boni, E. Bunn, D. Buzi, P. Chanial, C. Chapron, R. Charlassier, A.C. Cobos Cerutti, F. Columbro, A. Coppolecchia, G. De Gasperi, M. De Leo, S. Dheilly, C. Duca, L. Dumoulin, A. Etchegoyen, A. Fasciszewski, L.P. Ferreyro, D. Fracchia, M.M. Gamboa Lerena, K.M. Ganga, B. García, M.E. García Redondo, M. Gaspard, D. Gayer, M. Gervasi, M. Giard, V. Gille, Y. Giraud-Heraud, M. Gómez Berisso, M. González, M. Gradziel, M.R. Hampel, D. Harari, S. Henrot-Versillé, F. Incardona, E. Jule, J. Kaplan, C. Kristukat, L. Lamagna, S. Loucato, T. Loui, W. Marty, A. Mattei, A. May, M. Mcculloch, L. Mele, D. Melo, L. Montier, L. Mousset, L.M. Mundo, J.A. Murphy, J.D. Murphy, F. Nati, E. Olivieri, C. Oriol, A. Paiella, F. Pajot, H. Pastoriza, A. Pelosi

مصطلحات موضوعية: CMBR detector, CMBR experiment, CMBR polarisation, gravitational waves and CMBR polarization, Settore FIS/05 - Astronomia e Astrofisica

الوصف: We present the design, manufacturing and performance of the horn-switch system developed for the technological demonstrator of QUBIC (the Q&U Bolometric Interferometer for Cosmology). This system consists of 64 back-to-back dual-band (150 GHz and 220 GHz) corrugated feed-horns interposed with mechanical switches used to select desired baselines during the instrument self-calibration. We manufactured the horns in aluminum platelets milled by photo-chemical etching and mechanically tightened with screws. The switches are based on steel blades that open and close the waveguide between the back-to-back horns and are operated by miniaturized electromagnets. The measured electromagnetic performance of the feedhorns agrees with simulations. In particular we obtained a return loss around - 20 dB up to 230 GHz and beam patterns in agreement with single-mode simulations down to - 30 dB. The switches for this prototype were designed and built for the 150 GHz band. In this frequency range we find return and insertion losses consistent with expectations (< -25dB and similar to -0.1dB, respectively) and an isolation larger than 70dB. In this paper we also show the current development status of the feedhorn-switch system for the QUBIC full instrument, based on an array of 400 horn-switch assemblies.

العلاقة: info:eu-repo/semantics/altIdentifier/wos/WOS:000795606100004; volume:2022; issue:04; firstpage:1; lastpage:36; numberofpages:36; journal:JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS; http://hdl.handle.net/2434/924616Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85129871715

الإتاحة: https://doi.org/10.1088/1475-7516/2022/04/040Test
http://hdl.handle.net/2434/924616Test

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

المساهمون: M. Piat, G. Stankowiak, E.S. Battistelli, P. de Bernardi, G. D'Alessandro, M. De Petri, L. Grandsire, J.-. Hamilton, T.D. Hoang, S. Marniero, S. Masi, A. Mennella, L. Mousset, C. O'Sullivan, D. Prêle, A. Tartari, J.-. 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, A. Baù, B. Bélier, D. Bennett, L. Bergé, J.-. Bernard, M. Bersanelli, M.-. Bigot-Sazy, J. Bonaparte, J. Boni, E. Bunn, D. Burke, D. Buzi, F. Cavaliere, P. Chanial, C. Chapron, R. Charlassier, A.C. Cobos Cerutti, F. Columbro, A. Coppolecchia, G. De Gasperi, 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. Gille, Y. Giraud-Heraud, M. Gómez Berisso, M. González, M. Gradziel, M.R. Hampel, D. Harari, S. Henrot-Versillé, F. Incardona, E. Jule, J. Kaplan, C. Kristukat, L. Lamagna, S. Loucato, T. Loui, 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. Olivieri, C. Oriol, A. Paiella, F. Pajot, A. Passerini, H. Pastoriza, A. Pelosi

مصطلحات موضوعية: CMBR detector, CMBR experiment, CMBR polarisation, cosmological parameters from CMBR, Settore FIS/05 - Astronomia e Astrofisica

الوصف: A prototype version of the Q & U bolometric interferometer for cosmology (QUBIC) underwent a campaign of testing in the laboratory at Astroparticle Physics and Cosmology laboratory in Paris (APC). The detection chain is currently made of 256 NbSi transition edge sensors (TES) cooled to 320 mK. The readout system is a 128:1 time domain multiplexing scheme based on 128 SQUIDs cooled at 1K that are controlled and amplified by a SiGe application specific integrated circuit at 40 K. We report the performance of this readout chain and the characterization of the TES. The readout system has been functionally tested and characterized in the lab and in QUBIC. The low noise amplifier demonstrated a white noise level of 0.3 nV/root Hz. Characterizations of the QUBIC detectors and readout electronics includes the measurement of I-V curves, time constant and the noise equivalent power. The QUBIC TES bolometer array has approximately 80% detectors within operational parameters. It demonstrated a thermal decoupling compatible with a phonon noise of about 5 x 10(-1)7 W/root Hz at 410 mK critical temperature. While still limited by microphonics from the pulse tubes and noise aliasing from readout system, the instrument noise equivalent power is about 2 x 10(-16) W/root Hz, enough for the demonstration of bolometric interferometry.

العلاقة: info:eu-repo/semantics/altIdentifier/wos/WOS:000795597300002; volume:2022; issue:4; firstpage:1; lastpage:28; numberofpages:28; journal:JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS; http://hdl.handle.net/2434/924630Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85129689365

الإتاحة: https://doi.org/10.1088/1475-7516/2022/04/037Test
http://hdl.handle.net/2434/924630Test

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

المساهمون: S. Masi, E.S. Battistelli, P. de Bernardi, C. Chapron, F. Columbro, A. Coppolecchia, G. D'Alessandro, M. De Petri, L. Grandsire, J.-. Hamilton, L. Lamagna, S. Marniero, A. May, L. Mele, A. Mennella, C. O'Sullivan, A. Paiella, F. Piacentini, M. Piat, L. Piccirillo, G. Presta, A. Schillaci, A. Tartari, J.-. 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, A. Baù, B. Bélier, D. Bennett, L. Bergé, J.-. Bernard, M. Bersanelli, M.-. Bigot-Sazy, J. Bonaparte, J. Boni, E. Bunn, D. Burke, D. Buzi, F. Cavaliere, P. Chanial, R. Charlassier, A.C. Cobos Cerutti, G. De Gasperi, 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. Gille, Y. Giraud-Heraud, M. Gómez Berisso, M. González, M. Gradziel, M.R. Hampel, D. Harari, S. Henrot-Versillé, F. Incardona, E. Jule, J. Kaplan, C. Kristukat, S. Loucato, T. Loui, B. Maffei, W. Marty, A. Mattei, M. Mcculloch, D. Melo, L. Montier, L. Mousset, L.M. Mundo, J.A. Murphy, J.D. Murphy, F. Nati, E. Olivieri, C. Oriol, F. Pajot, A. Passerini, H. Pastoriza

مصطلحات موضوعية: CMBR detector, CMBR experiment, CMBR polarisation, gravitational waves and CMBR polarization, Settore FIS/05 - Astronomia e Astrofisica

الوصف: Current experiments aimed at measuring the polarization of the Cosmic Microwave Background (CMB) use cryogenic detector arrays with cold optical systems to boost their mapping speed. For this reason, large volume cryogenic systems with large optical windows, working continuously for years, are needed. The cryogenic system of the QUBIC (Q & U Bolometric Interferometer for Cosmology) experiment solves a combination of simultaneous requirements: very large optical throughput (similar to 40 cm(2)sr), large volume (similar to 4 m(3)) and large mass (similar to 165 kg) of the cryogenic instrument. Here we describe its design, fabrication, experimental optimization and validation in the Technological Demonstrator configuration. The QUBIC cryogenic system is based on a large volume cryostat that uses two pulse-tube refrigerators to cool the instrument to similar to 3K. The instrument includes the cryogenic polarization modulator, the corrugated feedhorn array, and the lower temperature stages: a He-4 evaporator cooling the interferometer beam combiner to -1K and a He-3 evaporator cooling the focal-plane detector arrays to similar to 0.3K. The cryogenic system has been tested and validated for more than 6 months of continuous operation. The detector arrays have reached a stable operating temperature of 0.33 K, while the polarization modulator has operated at a similar to 10K base temperature. The system has been tilted to cover the boresight elevation range 20 degrees-90 degrees without significant temperature variations. The instrument is now ready for deployment to the high Argentinean Andes.

العلاقة: info:eu-repo/semantics/altIdentifier/wos/WOS:000795597300003; volume:2022; issue:4; firstpage:1; lastpage:27; numberofpages:27; journal:JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS; http://hdl.handle.net/2434/924612Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85129871071

الإتاحة: https://doi.org/10.1088/1475-7516/2022/04/038Test
http://hdl.handle.net/2434/924612Test

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

المساهمون: G. D'Alessandro, L. Mele, F. Columbro, G. Amico, E.S. Battistelli, P. de Bernardi, A. Coppolecchia, M. De Petri, L. Grandsire, J.-. Hamilton, L. Lamagna, S. Marniero, S. Masi, A. Mennella, C. O'Sullivan, A. Paiella, F. Piacentini, M. Piat, G. Pisano, G. Presta, A. Tartari, S.A. Torchinsky, F. Voisin, M. Zannoni, P. Ade, J.G. Alberro, A. Almela, L.H. Arnaldi, D. Auguste, J. Aumont, S. Azzoni, S. Banfi, A. Baù, B. Bélier, D. Bennett, L. Bergé, J.-. Bernard, M. Bersanelli, M.-. Bigot-Sazy, J. Bonaparte, J. Boni, E. Bunn, D. Burke, D. Buzi, F. Cavaliere, P. Chanial, C. Chapron, R. Charlassier, A.C. Cobos Cerutti, G. De Gasperi, 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. Gille, Y. Giraud-Heraud, M. Gómez Berisso, M. González, M. Gradziel, M.R. Hampel, D. Harari, S. Henrot-Versillé, F. Incardona, E. Jule, J. Kaplan, C. Kristukat, S. Loucato, T. Loui, B. Maffei, W. Marty, A. Mattei, A. May, M. Mcculloch, D. Melo, L. Montier, L. Mousset, L.M. Mundo, J.A. Murphy, J.D. Murphy, F. Nati, E. Olivieri, C. Oriol, F. Pajot, A. Passerini, H. Pastoriza, A. Pelosi, C. Perbost

مصطلحات موضوعية: CMBR detector, CMBR experiment, CMBR polarisation, gravitational waves and CMBR polarization, Settore FIS/05 - Astronomia e Astrofisica

الوصف: Setting an upper limit or detection of B-mode polarization imprinted by gravitational waves from Inflation is one goal of modern large angular scale cosmic microwave background (CMB) experiments around the world. A great effort is being made in the deployment of many ground-based, balloon-borne and satellite experiments, using different methods to separate this faint polarized component from the incoming radiation. QUBIC exploits one of the most widely-used techniques to extract the input Stokes parameters, consisting in a rotating half-wave plate (HWP) and a linear polarizer to separate and modulate polarization components. QUBIC uses a step-by-step rotating HWP, with 15 degrees steps, combined with a 0.4 degrees s(-1) azimuth sky scan speed. The rotation is driven by a stepper motor mounted on the cryostat outer shell to avoid heat load at internal cryogenic stages. The design of this optical element is an engineering challenge due to its large 370 mm diameter and the 8K operation temperature that are unique features of the QUBIC experiment. We present the design for a modulator mechanism for up to 370 mm, and the first optical tests by using the prototype of QUBIC HWP (180 mm diameter). The tests and results presented in this work show that the QUBIC HWP rotator can achieve a precision of 0.15 degrees in position by using the stepper motor and custom-made optical encoder. The rotation induces < 5.0 mW (95% C.L) of power load on the 4K stage, resulting in no thermal issues on this stage during measurements. We measure a temperature settle-down characteristic time of 28 s after a rotation through a 15 degrees step, compatible with the scanning strategy, and we estimate a maximum temperature gradient within the HWP of <= 10 mK. This was calculated by setting up finite element thermal simulations that include the temperature profiles measured during the rotator operations. We report polarization modulation measurements performed at 150 GHz, showing a polarization efficiency > 99% (68% C.L.) and a median ...

العلاقة: info:eu-repo/semantics/altIdentifier/wos/WOS:000795597300001; volume:2022; issue:4; firstpage:1; lastpage:26; numberofpages:26; journal:JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS; http://hdl.handle.net/2434/924627Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85129823977

الإتاحة: https://doi.org/10.1088/1475-7516/2022/04/039Test
http://hdl.handle.net/2434/924627Test