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1. Geographical variability of bacterial communities of cryoconite holes of Andean glaciers

Author: F. Pittino, R. Ambrosini, M. Seeger, R. S. Azzoni, G. Diolaiuti, P. Alviz Gazitua, and A. Franzetti
Subjects: Medicine, Science
Abstract: Abstract Cryoconite holes, ponds full of melting water with sediment on the bottom, are hotspots of biodiversity on glacier surfaces and host dynamic micro-ecosystems. They have been extensively investigated in different areas of the world (e.g., the Arctic, Antarctic, Alps, and Himalaya), but so far no study has described the bacterial communities of the glaciers in the Andes, the world’s longest mountain range. In this study, we describe the bacterial communities of three small ( 85 km2) glaciers of the Patagonian Andes (Exploradores and Perito Moreno glaciers) whose ablation tongues reach low altitude (
Published: 2023
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2. Tensor-to-scalar ratio forecasts for extended LiteBIRD frequency configurations

Author: U. Fuskeland, J. Aumont, R. Aurlien, C. Baccigalupi, A. J. Banday, H. K. Eriksen, J. Errard, R. T. Génova-Santos, T. Hasebe, J. Hubmayr, H. Imada, N. Krachmalnicof, L. Lamagna, G. Pisano, D. Poletti, M. Remazeilles, K. L. Thompson, L. Vache, I. K. Wehus, S. Azzoni, M. Ballardini, R. B. Barreiro, N. Bartolo, A. Basyrov, D. Beck, M. Bersanelli, M. Bortolami, M. Brilenkov, E. Calabrese, A. Carones, F. J. Casas, K. Cheung, J. Chluba, S. E. Clark, L. Clermont, and E.J. Wollack
Subjects: Space Sciences (General)
Abstract: LiteBIRD is a planned JAXA-led cosmic microwave background (CMB) B-mode satellite experiment aiming for launch in the late 2020s, with a primary goal of detecting the imprint of primordial inflationary gravitational waves. Its current baseline focal-plane configuration includes 15 frequency bands between 40 and 402 GHz, fulfilling the mission requirements to detect the amplitude of gravitational waves with the total uncertainty on the tensor-to-scalar ratio, δr, down to δr < 0.001. A key aspect of this performance is accurate astrophysical component separation, and the ability to remove polarized thermal dust emission is particularly important. In this paper we note that the CMB frequency spectrum falls off nearly exponentially above 300 GHz relative to the thermal dust spectral energy distribution, and a relatively minor high frequency extension can therefore result in even lower uncertainties and better model reconstructions. Specifically, we compared the baseline design with five extended configurations, while varying the underlying dust modeling, in each of which the High-Frequency Telescope (HFT) frequency range was shifted logarithmically toward higher frequencies, with an upper cutoff ranging between 400 and 600 GHz. In each case, we measured the tensor-to-scalar ratio r uncertainty and bias using both parametric and minimum-variance component-separation algorithms. When the thermal dust sky model includes a spatially varying spectral index and temperature, we find that the statistical uncertainty on r after foreground cleaning may be reduced by as much as 30–50% by extending the upper limit of the frequency range from 400 to 600 GHz, with most of the improvement already gained at 500 GHz. We also note that a broader frequency range leads to higher residuals when fitting an incorrect dust model, but also it is easier to discriminate between models through higher χ2 sensitivity. Even in the case in which the fitting procedure does not correspond to the underlying dust model in the sky, and when the highest frequency data cannot be modeled with sufficient fidelity and must be excluded from the analysis, the uncertainty on r increases by only about 5% for a 500 GHz configuration compared to the baseline.
Published: 2023
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3. Glacier shrinkage in the Alps continues unabated as revealed by a new glacier inventory from Sentinel-2

Author: F. Paul, P. Rastner, R. S. Azzoni, G. Diolaiuti, D. Fugazza, R. Le Bris, J. Nemec, A. Rabatel, M. Ramusovic, G. Schwaizer, and C. Smiraglia
Subjects: Environmental sciences, GE1-350, Geology, QE1-996.5
Abstract: The ongoing glacier shrinkage in the Alps requires frequent updates of glacier outlines to provide an accurate database for monitoring, modelling purposes (e.g. determination of run-off, mass balance, or future glacier extent), and other applications. With the launch of the first Sentinel-2 (S2) satellite in 2015, it became possible to create a consistent, Alpine-wide glacier inventory with an unprecedented spatial resolution of 10 m. The first S2 images from August 2015 already provided excellent mapping conditions for most glacierized regions in the Alps and were used as a base for the compilation of a new Alpine-wide glacier inventory in a collaborative team effort. In all countries, glacier outlines from the latest national inventories have been used as a guide to compile an update consistent with the respective previous interpretation. The automated mapping of clean glacier ice was straightforward using the band ratio method, but the numerous debris-covered glaciers required intense manual editing. Cloud cover over many glaciers in Italy required also including S2 scenes from 2016. The outline uncertainty was determined with digitizing of 14 glaciers several times by all participants. Topographic information for all glaciers was obtained from the ALOS AW3D30 digital elevation model (DEM). Overall, we derived a total glacier area of 1806±60 km2 when considering 4395 glaciers >0.01 km2. This is 14 % (−1.2 % a−1) less than the 2100 km2 derived from Landsat in 2003 and indicates an unabated continuation of glacier shrinkage in the Alps since the mid-1980s. It is a lower-bound estimate, as due to the higher spatial resolution of S2 many small glaciers were additionally mapped or increased in size compared to 2003. Median elevations peak around 3000 m a.s.l., with a high variability that depends on location and aspect. The uncertainty assessment revealed locally strong differences in interpretation of debris-covered glaciers, resulting in limitations for change assessment when using glacier extents digitized by different analysts. The inventory is available at https://doi.org/10.1594/PANGAEA.909133 (Paul et al., 2019).
Published: 2020
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4. Cryoconite: an efficient accumulator of radioactive fallout in glacial environments

Author: G. Baccolo, E. Łokas, P. Gaca, D. Massabò, R. Ambrosini, R. S. Azzoni, C. Clason, B. Di Mauro, A. Franzetti, M. Nastasi, M. Prata, P. Prati, E. Previtali, B. Delmonte, and V. Maggi
Subjects: Environmental sciences, GE1-350, Geology, QE1-996.5
Abstract: Cryoconite is rich in natural and artificial radioactivity, but a discussion about its ability to accumulate radionuclides is lacking. A characterization of cryoconite from two Alpine glaciers is presented here. Results confirm that cryoconite is significantly more radioactive than the matrices usually adopted for the environmental monitoring of radioactivity, such as lichens and mosses, with activity concentrations exceeding 10 000 Bq kg−1 for single radionuclides. This makes cryoconite an ideal matrix to investigate the deposition and occurrence of radioactive species in glacial environments. In addition, cryoconite can be used to track environmental radioactivity sources. We have exploited atomic and activity ratios of artificial radionuclides to identify the sources of the anthropogenic radioactivity accumulated in our samples. The signature of cryoconite from different Alpine glaciers is compatible with the stratospheric global fallout and Chernobyl accident products. Differences are found when considering other geographic contexts. A comparison with data from literature shows that Alpine cryoconite is strongly influenced by the Chernobyl fallout, while cryoconite from other regions is more impacted by events such as nuclear test explosions and satellite reentries. To explain the accumulation of radionuclides in cryoconite, the glacial environment as a whole must be considered, and particularly the interaction between ice, meltwater, cryoconite and atmospheric deposition. We hypothesize that the impurities originally preserved into ice and mobilized with meltwater during summer, including radionuclides, are accumulated in cryoconite because of their affinity for organic matter, which is abundant in cryoconite. In relation to these processes, we have explored the possibility of exploiting radioactivity to date cryoconite.
Published: 2020
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5. MONITORING ALPINE GLACIERS FROM CLOSE-RANGE TO SATELLITE SENSORS

Author: V. Yordanov, D. Fugazza, R. S. Azzoni, M. Cernuschi, M. Scaioni, and G. A. Diolaiuti
Subjects: Technology, Engineering (General). Civil engineering (General), TA1-2040, Applied optics. Photonics, TA1501-1820
Abstract: In this paper the use of different types of remote-sensing techniques for monitoring topographic changes of Alpine glaciers is presented and discussed. Close range photogrammetry based on Structure-from-Motion approach is adopted to process images recorded from ground-based and drone-based stations in order to output dense point clouds. These are then directly compared to detect local changes by mean of M3C2 algorithm, while digital elevation models are interpolated to find global ice thinning and retreat. Medium-resolution satellite imagery can be exploited to monitor the glacier evolution at lower resolution but including the development and collapse of large crevasses. A case study concerning the Forni Glacier in the Raethian Alps (Italy) is presented to demonstrate the feasibility of the proposed approach by adopting data sets collected from 2016 to 2018.
Published: 2019
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6. Estimating the snow water equivalent on a glacierized high elevation site (Forni Glacier, Italy)

Author: A. Senese, M. Maugeri, E. Meraldi, G. P. Verza, R. S. Azzoni, C. Compostella, and G. Diolaiuti
Subjects: Environmental sciences, GE1-350, Geology, QE1-996.5
Abstract: We present and compare 11 years of snow data (snow depth and snow water equivalent, SWE) measured by an automatic weather station (AWS) and corroborated by data from field campaigns on the Forni Glacier in Italy. The aim of the analysis is to estimate the SWE of new snowfall and the annual SWE peak based on the average density of the new snow at the site (corresponding to the snowfall during the standard observation period of 24 h) and automated snow depth measurements. The results indicate that the daily SR50 sonic ranger measurements and the available snow pit data can be used to estimate the mean new snow density value at the site, with an error of ±6 kg m−3. Once the new snow density is known, the sonic ranger makes it possible to derive SWE values with an RMSE of 45 mm water equivalent (if compared with snow pillow measurements), which turns out to be about 8 % of the total SWE yearly average. Therefore, the methodology we present is interesting for remote locations such as glaciers or high alpine regions, as it makes it possible to estimate the total SWE using a relatively inexpensive, low-power, low-maintenance, and reliable instrument such as the sonic ranger.
Published: 2018
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7. Combination of UAV and terrestrial photogrammetry to assess rapid glacier evolution and map glacier hazards

Author: D. Fugazza, M. Scaioni, M. Corti, C. D'Agata, R. S. Azzoni, M. Cernuschi, C. Smiraglia, and G. A. Diolaiuti
Subjects: Environmental technology. Sanitary engineering, TD1-1066, Geography. Anthropology. Recreation, Environmental sciences, GE1-350, Geology, QE1-996.5
Abstract: Tourists and hikers visiting glaciers all year round face hazards such as sudden terminus collapses, typical of such a dynamically evolving environment. In this study, we analyzed the potential of different survey techniques to analyze hazards of the Forni Glacier, an important geosite located in Stelvio Park (Italian Alps). We carried out surveys in the 2016 ablation season and compared point clouds generated from an unmanned aerial vehicle (UAV) survey, close-range photogrammetry and terrestrial laser scanning (TLS). To investigate the evolution of glacier hazards and evaluate the glacier thinning rate, we also used UAV data collected in 2014 and a digital elevation model (DEM) created from an aerial photogrammetric survey of 2007. We found that the integration between terrestrial and UAV photogrammetry is ideal for mapping hazards related to the glacier collapse, while TLS is affected by occlusions and is logistically complex in glacial terrain. Photogrammetric techniques can therefore replace TLS for glacier studies and UAV-based DEMs hold potential for becoming a standard tool in the investigation of glacier thickness changes. Based on our data sets, an increase in the size of collapses was found over the study period, and the glacier thinning rates went from 4.55 ± 0.24 m a−1 between 2007 and 2014 to 5.20 ± 1.11 m a−1 between 2014 and 2016.
Published: 2018
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8. Functional and Taxonomic Diversity of Anaerobes in Supraglacial Microbial Communities

Author: Francesca Pittino, Krzysztof Zawierucha, Ewa Poniecka, Jakub Buda, Asia Rosatelli, Simone Zordan, Roberto S. Azzoni, Guglielmina Diolaiuti, Roberto Ambrosini, and Andrea Franzetti
Subjects: Microbiology (medical), Infectious Diseases, General Immunology and Microbiology, Ecology, Physiology, Genetics, Cell Biology
Abstract: Recent evidence disclosed the presence of a potential niche for anaerobic microorganisms and anaerobic processes in supraglacial sediments (cryoconite), but a detailed description of the structure and functions of the anaerobic population is still lacking. This work used rRNA and mRNA sequencing and demonstrated that anaerobes are very active in these environments and represent a relevant albeit neglected part of the ecosystem functions in these environments.
Published: 2023

9. Estimating ice albedo from fine debris cover quantified by a semi-automatic method: the case study of Forni Glacier, Italian Alps

Author: R. S. Azzoni, A. Senese, A. Zerboni, M. Maugeri, C. Smiraglia, and G. A. Diolaiuti
Subjects: Environmental sciences, GE1-350, Geology, QE1-996.5
Abstract: In spite of the quite abundant literature focusing on fine debris deposition over glacier accumulation areas, less attention has been paid to the glacier melting surface. Accordingly, we proposed a novel method based on semi-automatic image analysis to estimate ice albedo from fine debris coverage (d). Our procedure was tested on the surface of a wide Alpine valley glacier (the Forni Glacier, Italy), in summer 2011, 2012 and 2013, acquiring parallel data sets of in situ measurements of ice albedo and high-resolution surface images. Analysis of 51 images yielded d values ranging from 0.01 to 0.63 and albedo was found to vary from 0.06 to 0.32. The estimated d values are in a linear relation with the natural logarithm of measured ice albedo (R = −0.84). The robustness of our approach in evaluating d was analyzed through five sensitivity tests, and we found that it is largely replicable. On the Forni Glacier, we also quantified a mean debris coverage rate (Cr) equal to 6 g m−2 per day during the ablation season of 2013, thus supporting previous studies that describe ongoing darkening phenomena at Alpine debris-free glaciers surface. In addition to debris coverage, we also considered the impact of water (both from melt and rainfall) as a factor that tunes albedo: meltwater occurs during the central hours of the day, decreasing the albedo due to its lower reflectivity; instead, rainfall causes a subsequent mean daily albedo increase slightly higher than 20 %, although it is short-lasting (from 1 to 4 days).
Published: 2016
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10. QUBIC VII: The feedhorn-switch system of the technological demonstrator

Author: F. Cavaliere, A. Mennella, M. Zannoni, P. Battaglia, E. S. Battistelli, D. Burke, G. D’Alessandro, P. de Bernardis, M. De Petris, C. Franceschet, L. Grandsire, J. -Ch. Hamilton, B. Maffei, E. Manzan, S. Marnieros, 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, B. Bélier, A. Baù, S. Banfi, D. Bennett, L. Bergé, 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. Gómez Berisso, 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. 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, 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, E. Pagana, A. Paiella, F. Pajot, H. Pastoriza, A. Pelosi, C. Perbost, M. Perciballi, F. Piacentini, 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, J. -P. Thermeau, P. Timbie, M. Tomasi, G. Tucker, C. Tucker, N. Vittorio, F. Wicek, M. Wright, and A. Zullo, Cavaliere, F, Mennella, A, Zannoni, M, Battaglia, P, Battistelli, E, De Bernardis, P, Burke, D, D'Alessandro, G, De Petris, M, Franceschet, C, Grandsire, L, Hamilton, J, Maffei, B, Manzan, B, Marnieros, S, Masi, S, O'Sullivan, C, Passerini, A, Pezzotta, F, Piat, M, Tartari, A, Torchinsky, S, Viganò, D, Voisin, F, Ade, P, Alberro, J, Almela, A, Amico, G, Arnaldi, L, Auguste, D, Aumont, J, Azzoni, S, Banfi, S, Baù, A, Bélier, B, Bennett, D, Bergé, L, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bonaparte, J, Bonis, J, Bunn, E, Buzi, D, Chanial, P, Chapron, C, Charlassier, R, Cobos Cerutti, A, Columbro, F, Coppolecchia, A, De Gasperis, G, De Leo, M, Dheilly, S, Duca, C, Dumoulin, L, Etchegoyen, A, Fasciszewski, A, Ferreyro, L, Fracchia, D, Gamboa Lerena, M, Ganga, K, García, B, García Redondo, M, Gaspard, M, Gayer, D, Gervasi, M, Giard, M, Gilles, V, Giraud-Heraud, Y, Gómez Berisso, M, González, M, Gradziel, M, Hampel, M, 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, Murphy, J, Nati, F, Olivieri, E, Oriol, C, Paiella, A, Pajot, F, Pastoriza, H, Pelosi, A, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Observatoire de Paris - Site de Paris (OP), Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), QUBIC, D’Alessandro, G, de Bernardis, P, Manzan, E, O’Sullivan, C, Pagana, E, 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, Salum, J, Scóccola, C, Schillaci, A, Scully, S, Spinelli, S, Stankowiak, G, Stolpovskiy, M, Supanitsky, A, Thermeau, J, Timbie, P, Tomasi, M, Tucker, G, Tucker, C, Vittorio, N, Wicek, F, Wright, M, and Zullo, A
Subjects: CMBR polarisation, Physics - Instrumentation and Detectors, Manchester Cancer Research Centre, Settore FIS/05, ResearchInstitutes_Networks_Beacons/mcrc, FOS: Physical sciences, Astronomy and Astrophysics, Instrumentation and Detectors (physics.ins-det), CMBR detectors, CMBR experiments, gravitational waves and CMBR polarization, FIS/05 - ASTRONOMIA E ASTROFISICA, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], CMBR experiment, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), CMBR detector
Abstract: 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 is constituted of 64 back-to-back dual-band (150\,GHz and 220\,GHz) corrugated feed-horns interspersed 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 wave-guide between the back-to-back horns and are operated by miniaturized electromagnets. 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., 30 pages, 28 figures. Accepted for submission to JCAP
Published: 2022

11. Optical Characterization of OMT-Coupled TES Bolometers for LiteBIRD

Author: J. Hubmayr, P. A. R. Ade, A. Adler, E. Allys, D. Alonso, K. Arnold, D. Auguste, J. Aumont, R. Aurlien, J. E. Austermann, S. Azzoni, C. Baccigalupi, A. J. Banday, R. Banerji, R. B. Barreiro, N. Bartolo, S. Basak, E. Battistelli, L. Bautista, J. A. Beall, D. Beck, S. Beckman, K. Benabed, J. Bermejo-Ballesteros, M. Bersanelli, J. Bonis, J. Borrill, F. Bouchet, F. Boulanger, S. Bounissou, M. Brilenkov, M. L. Brown, M. Bucher, E. Calabrese, M. Calvo, P. Campeti, A. Carones, F. J. Casas, A. Catalano, A. Challinor, V. Chan, K. Cheung, Y. Chinone, C. Chiocchetta, S. E. Clark, L. Clermont, S. Clesse, J. Cliche, F. Columbro, J. A. Connors, A. Coppolecchia, W. Coulton, J. Cubas, A. Cukierman, D. Curtis, F. Cuttaia, G. D’Alessandro, K. Dachlythra, P. de Bernardis, T. de Haan, E. de la Hoz, M. De Petris, S. Della Torre, J. J. Daz Garca, C. Dickinson, P. Diego-Palazuelos, M. Dobbs, T. Dotani, D. Douillet, E. Doumayrou, L. Duband, A. Ducout, S. M. Duff, J. M. Duval, K. Ebisawa, T. Elleflot, H. K. Eriksen, J. Errard, T. Essinger-Hileman, S. Farrens, F. Finelli, R. Flauger, K. Fleury-Frenette, C. Franceschet, U. Fuskeland, L. Galli, S. Galli, M. Galloway, K. Ganga, J. R. Gao, R. T. Genova-Santos, M. Georges, M. Gerbino, M. Gervasi, T. Ghigna, S. Giardiello, E. Gjerlw, R. Gonzlez Gonzles, M. L. Gradziel, J. Grain, L. Grandsire, F. Grupp, A. Gruppuso, J. E. Gudmundsson, N. W. Halverson, J. Hamilton, P. Hargrave, T. Hasebe, M. Hasegawa, M. Hattori, M. Hazumi, S. Henrot-Versill, B. Hensley, D. Herman, D. Herranz, G. C. Hilton, E. Hivon, R. A. Hlozek, D. Hoang, A. L. Hornsby, Y. Hoshino, K. Ichiki, T. Iida, T. Ikemoto, H. Imada, K. Ishimura, H. Ishino, G. Jaehnig, M. Jones, T. Kaga, S. Kashima, N. Katayama, A. Kato, T. Kawasaki, R. Keskitalo, C. Kintziger, 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. V. Lanen, G. Laquaniello, M. Lattanzi, A. T. Lee, C. Leloup, F. Levrier, E. Linder, M. J. Link, A. I. Lonappan, T. Louis, G. Luzzi, J. Macias-Perez, T. Maciaszek, B. Maffei, D. Maino, M. Maki, S. Mandelli, M. Maris, B. Marquet, E. Martnez-Gonzlez, F. A. Martire, S. Masi, M. Massa, M. Masuzawa, S. Matarrese, F. T. Matsuda, T. Matsumura, L. Mele, A. Mennella, M. Migliaccio, Y. Minami, K. Mitsuda, A. Moggi, M. Monelli, A. Monfardini, J. Montgomery, L. Montier, G. Morgante, B. Mot, Y. Murata, J. A. Murphy, M. Nagai, Y. Nagano, T. Nagasaki, R. Nagata, S. Nakamura, R. Nakano, T. Namikawa, F. Nati, P. Natoli, S. Nerval, N. Neto Godry Farias, T. Nishibori, H. Nishino, F. Noviello, G. C. O’Neil, C. O’Sullivan, K. Odagiri, H. Ochi, H. Ogawa, S. Oguri, H. Ohsaki, I. S. Ohta, N. Okada, L. Pagano, A. Paiella, D. Paoletti, G. Pascual Cisneros, A. Passerini, G. Patanchon, V. Pelgrim, J. Peloton, V. Pettorino, F. Piacentini, M. Piat, G. Piccirilli, F. Pinsard, G. Pisano, J. Plesseria, G. Polenta, D. Poletti, T. Prouv, G. Puglisi, D. Rambaud, C. Raum, S. Realini, M. Reinecke, C. D. Reintsema, M. Remazeilles, A. Ritacco, P. Rosier, 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, A. Shitvov, G. Signorelli, G. Smecher, F. Spinella, J. Starck, S. Stever, R. Stompor, R. Sudiwala, S. Sugiyama, R. Sullivan, A. Suzuki, J. Suzuki, T. Suzuki, T. L. Svalheim, E. Switzer, R. Takaku, H. Takakura, S. Takakura, Y. Takase, Y. Takeda, A. Tartari, D. Tavagnacco, A. Taylor, E. Taylor, Y. Terao, L. Terenzi, J. Thermeau, H. Thommesen, K. L. Thompson, B. Thorne, T. Toda, M. Tomasi, M. Tominaga, N. Trappe, M. Tristram, M. Tsuji, M. Tsujimoto, C. Tucker, R. Ueki, J. N. Ullom, K. Umemori, L. Vacher, J. Van Lanen, G. Vermeulen, P. Vielva, F. Villa, M. R. Vissers, N. Vittorio, B. Wandelt, W. Wang, I. K. Wehus, J. Weller, B. Westbrook, G. Weymann-Despres, J. Wilms, B. Winter, E. J. Wollack, N. Y. Yamasaki, T. Yoshida, J. Yumoto, K. Watanuki, A. Zacchei, M. Zannoni, A. Zonca, Hubmayr, J, Ade, P, Adler, A, Allys, E, Alonso, D, Arnold, K, Auguste, D, Aumont, J, Aurlien, R, Austermann, J, Azzoni, S, Baccigalupi, C, Banday, A, Banerji, R, Barreiro, R, Bartolo, N, Basak, S, Battistelli, E, Bautista, L, Beall, J, Beck, D, Beckman, S, Benabed, K, Bermejo-Ballesteros, J, Bersanelli, M, Bonis, J, Borrill, J, Bouchet, F, Boulanger, F, Bounissou, S, Brilenkov, M, Brown, M, Bucher, M, Calabrese, E, Calvo, M, Campeti, P, Carones, A, Casas, F, Catalano, A, Challinor, A, Chan, V, Cheung, K, Chinone, Y, Chiocchetta, C, Clark, S, Clermont, L, Clesse, S, Cliche, J, Columbro, F, Connors, J, Coppolecchia, A, Coulton, W, Cubas, J, Cukierman, A, Curtis, D, Cuttaia, F, D’Alessandro, G, Dachlythra, K, de Bernardis, P, de Haan, T, de la Hoz, E, De Petris, M, Della Torre, S, Daz Garca, J, Dickinson, C, Diego-Palazuelos, P, Dobbs, M, Dotani, T, Douillet, D, Doumayrou, E, Duband, L, Ducout, A, Duff, S, Duval, J, Ebisawa, K, Elleflot, T, Eriksen, H, Errard, J, Essinger-Hileman, T, Farrens, S, Finelli, F, Flauger, R, Fleury-Frenette, K, Franceschet, C, Fuskeland, U, Galli, L, Galli, S, Galloway, M, Ganga, K, Gao, J, Genova-Santos, R, Georges, M, Gerbino, M, Gervasi, M, Ghigna, T, Giardiello, S, Gjerlw, E, Gonzles, R, Gradziel, M, Grain, J, Grandsire, L, Grupp, F, Gruppuso, A, Gudmundsson, J, Halverson, N, Hamilton, J, Hargrave, P, Hasebe, T, Hasegawa, M, Hattori, M, Hazumi, M, Henrot-Versill, S, Hensley, B, Herman, D, Herranz, D, Hilton, G, Hivon, E, Hlozek, R, Hoang, D, Hornsby, A, Hoshino, Y, Ichiki, K, Iida, T, Ikemoto, T, Imada, H, Ishimura, K, Ishino, H, Jaehnig, G, Jones, M, Kaga, T, Kashima, S, Katayama, N, Kato, A, Kawasaki, T, Keskitalo, R, Kintziger, C, Kisner, T, Kobayashi, Y, Kogiso, N, Kogut, A, Kohri, K, Komatsu, E, Komatsu, K, Konishi, K, Krachmalnicoff, N, Kreykenbohm, I, Kuo, C, Kushino, A, Lamagna, L, Lanen, J, Laquaniello, G, Lattanzi, M, Lee, A, Leloup, C, Levrier, F, Linder, E, Link, M, Lonappan, A, Louis, T, Luzzi, G, Macias-Perez, J, Maciaszek, T, Maffei, B, Maino, D, Maki, M, Mandelli, S, Maris, M, Marquet, B, Martnez-Gonzlez, E, Martire, F, Masi, S, Massa, M, Masuzawa, M, Matarrese, S, Matsuda, F, Matsumura, T, Mele, L, Mennella, A, Migliaccio, M, Minami, Y, Mitsuda, K, Moggi, A, Monelli, M, Monfardini, A, Montgomery, J, Montier, L, Morgante, G, Mot, B, Murata, Y, Murphy, J, Nagai, M, Nagano, Y, Nagasaki, T, Nagata, R, Nakamura, S, Nakano, R, Namikawa, T, Nati, F, Natoli, P, Nerval, S, Neto Godry Farias, N, Nishibori, T, Nishino, H, Noviello, F, O’Neil, G, O’Sullivan, C, Odagiri, K, Ochi, H, Ogawa, H, Oguri, S, Ohsaki, H, Ohta, I, Okada, N, Pagano, L, Paiella, A, Paoletti, D, Pascual Cisneros, G, Passerini, A, Patanchon, G, Pelgrim, V, Peloton, J, Pettorino, V, Piacentini, F, Piat, M, Piccirilli, G, Pinsard, F, Pisano, G, Plesseria, J, Polenta, G, Poletti, D, Prouv, T, Puglisi, G, Rambaud, D, Raum, C, Realini, S, Reinecke, M, Reintsema, C, Remazeilles, M, Ritacco, A, Rosier, P, Roudil, G, Rubino-Martin, J, Russell, M, Sakurai, H, Sakurai, Y, Sandri, M, Sasaki, M, Savini, G, Scott, D, Seibert, J, Sekimoto, Y, Sherwin, B, Shinozaki, K, Shiraishi, M, Shirron, P, Shitvov, A, Signorelli, G, Smecher, G, Spinella, F, Starck, J, Stever, S, Stompor, R, Sudiwala, R, Sugiyama, S, Sullivan, R, Suzuki, A, Suzuki, J, Suzuki, T, Svalheim, T, Switzer, E, Takaku, R, Takakura, H, Takakura, S, Takase, Y, Takeda, Y, Tartari, A, Tavagnacco, D, Taylor, A, Taylor, E, Terao, Y, Terenzi, L, Thermeau, J, Thommesen, H, Thompson, K, Thorne, B, Toda, T, Tomasi, M, Tominaga, M, Trappe, N, Tristram, M, Tsuji, M, Tsujimoto, M, Tucker, C, Ueki, R, Ullom, J, Umemori, K, Vacher, L, Van Lanen, J, Vermeulen, G, Vielva, P, Villa, F, Vissers, M, Vittorio, N, Wandelt, B, Wang, W, Wehus, I, Weller, J, Westbrook, B, Weymann-Despres, G, Wilms, J, Winter, B, Wollack, E, Yamasaki, N, Yoshida, T, Yumoto, J, Watanuki, K, Zacchei, A, Zannoni, M, Zonca, A, and National Aeronautics and Space Administration (US)
Subjects: CMB, TES, OMT, Low temperature detector, Bolometer, FIS/05 - ASTRONOMIA E ASTROFISICA, Settore FIS/05 - Astronomia e Astrofisica, General Materials Science, Condensed Matter Physics, CMB, TES, OMT, Low temperature detector, Bolometer, Atomic and Molecular Physics, and Optics
Abstract: et al., Feedhorn- and orthomode transducer- (OMT) coupled transition edge sensor (TES) bolometers have been designed and micro-fabricated to meet the optical specifications of the LiteBIRD high frequency telescope (HFT) focal plane. We discuss the design and optical characterization of two LiteBIRD HFT detector types: dual-polarization, dual-frequency-band pixels with 195/280 GHz and 235/337 GHz band centers. Results show well-matched passbands between orthogonal polarization channels and frequency centers within 3% of the design values. The optical efficiency of each frequency channel is conservatively reported to be within the range 0.64−0.72, determined from the response to a cryogenic, temperature-controlled thermal source. These values are in good agreement with expectations and either exceed or are within 10% of the values used in the LiteBIRD sensitivity forecast. Lastly, we report a measurement of loss in Nb/SiNx/Nb microstrip at 100 mK and over the frequency range 200–350 GHz, which is comparable to values previously reported in the literature., This work is supported by NASA under grant no. 80NSSC18K0132.
Published: 2022

12. QUBIC Experiment Toward the First Light

Author: G. D’Alessandro, E. S. Battistelli, P. de Bernardis, M. De Petris, M. M. Gamboa Lerena, L. Grandsire, J.-Ch. Hamilton, S. Marnieros, S. Masi, A. Mennella, L. Mousset, C. O’Sullivan, M. Piat, A. Tartari, 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.-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, 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. 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, D. Prêle, G. Presta, R. Puddu, D. Rambaud, E. Rasztocky, P. Ringegni, G. E. Romero, J. M. Salum, A. Schillaci, C. G. Scóccola, S. Scully, S. Spinelli, G. Stankowiak, M. Stolpovskiy, A. D. Supanitsky, J.-P. Thermeau, P. Timbie, M. Tomasi, G. Tucker, C. Tucker, D. Viganò, N. Vittorio, F. Wicek, M. Wright, A. Zullo, D’Alessandro, G, Battistelli, E, de Bernardis, P, De Petris, M, Gamboa Lerena, M, Grandsire, L, Hamilton, J, Marnieros, S, Masi, S, Mennella, A, Mousset, L, O’Sullivan, C, Piat, M, Tartari, A, Torchinsky, S, Voisin, F, Zannoni, M, Ade, P, Alberro, J, Almela, A, Amico, G, Arnaldi, L, Auguste, D, Aumont, J, Azzoni, S, Banfi, S, Baù, A, Bélier, B, Bennett, D, Bergé, L, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bonaparte, J, Bonis, J, Bunn, E, Burke, D, Buzi, D, Cavaliere, F, Chanial, P, Chapron, C, Charlassier, R, Cobos Cerutti, A, Columbro, F, Coppolecchia, A, De Gasperis, G, De Leo, M, Dheilly, S, Duca, C, Dumoulin, L, Etchegoyen, A, Fasciszewski, A, Ferreyro, L, Fracchia, D, Franceschet, C, Ganga, K, García, B, García Redondo, M, Gaspard, M, Gayer, D, Gervasi, M, Giard, M, Gilles, V, Giraud-Heraud, Y, Gómez Berisso, M, González, M, Gradziel, M, Hampel, M, 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, Murphy, J, 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, Prêle, D, Presta, G, Puddu, R, Rambaud, D, Rasztocky, E, Ringegni, P, Romero, G, Salum, J, Schillaci, A, Scóccola, C, Scully, S, Spinelli, S, Stankowiak, G, Stolpovskiy, M, Supanitsky, A, Thermeau, J, Timbie, P, Tomasi, M, Tucker, G, Tucker, C, Viganò, D, Vittorio, N, Wicek, F, Wright, M, Zullo, A, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Observatoire de Paris - Site de Paris (OP), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), and QUBIC
Subjects: Instruments, mm-wave, Applications, astrophysics and cosmology, Settore FIS/05, Applications: astrophysics and cosmology, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, FIS/05 - ASTRONOMIA E ASTROFISICA, FIS/01 - FISICA SPERIMENTALE, Settore FIS/05 - Astronomia e Astrofisica, Instruments: mm-wave, Instruments: mm-wave · Applications: astrophysics and cosmology, General Materials Science, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract: International audience; The Q & U Bolometric Interferometer for Cosmology (QUBIC) is a cosmology experiment that aims to measure the B-mode polarization of the cosmic microwave background (CMB). Measurements of the primordial B-mode pattern of the CMB polarization are in fact among the most exciting goals in cosmology as it would allow testing of the inflationary paradigm. Many experiments are attempting to measure the B-modes, from the ground and the stratosphere, using imaging Stokes polarimeters. The QUBIC collaboration developed an innovative concept to measure CMB polarization using bolometric interferometry. This approach mixes the high sensitivity of bolometric detectors with the accurate control of systematics due to the interferometric layout of the instrument. We present the calibration results for the Technological Demonstrator, before its commissioning in the Argentinian observing site and preparation for first light.
Published: 2022

13. Post-Depositional Biodegradation Processes of Pollutants on Glacier Surfaces

Author: Francesca Pittino, Roberto Ambrosini, Roberto S. Azzoni, Guglielmina A. Diolaiuti, Sara Villa, Isabella Gandolfi, and Andrea Franzetti
Subjects: cryoconite, POPs, microbiology, long-range transport, cryosphere, contaminants, bacteria, Physics, QC1-999
Abstract: Glaciers are important fresh-water reservoirs for our planet. Although they are often located at high elevations or in remote areas, glacial ecosystems are not pristine, as many pollutants can undergo long-range atmospheric transport and be deposited on glacier surface, where they can be stored for long periods of time, and then be released into the down-valley ecosystems. Understanding the dynamics of these pollutants in glaciers is therefore important for assessing their environmental fate. To this aim, it is important to study cryoconite holes, small ponds filled with water and with a layer of sediment, the cryoconite, at the bottom, which occur on the surface of most glaciers. Indeed, these environments are hotspots of biodiversity on glacier surface as they host metabolically active bacterial communities that include generalist taxa able to degrade pollutants. In this work, we aim to review the studies that have already investigated pollutant (e.g., chlorpyrifos and polychlorinated-biphenyls (PCBs)) degradation in cryoconite holes and other supraglacial environmental matrices. These studies have revealed that bacteria play a significant role in pollutant degradation in these habitats and can be positively selected in contaminated environments. We will also provide indication for future research in this field.
Published: 2018
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14. The QUBIC instrument for CMB polarization measurements

Author: A. Bottani, E. Jules, A. Zullo, Federico Nati, V. Gilles, A. Baù, L. Mousset, Giampaolo Pisano, C. Perbost, C. Oriol, Damien Rambaud, G. Amico, D. Buzi, Emory F. Bunn, M. Tomasi, L. H. Arnaldi, A. Etchegoyen, S. Azzoni, F. Wicek, Marco Bersanelli, Mark McCulloch, Alejandro Almela, Mario Zannoni, M. Perciballi, Peter A. R. Ade, A. Pelosi, Maria Salatino, D. Auguste, S. Scully, M. Gómez Berisso, F. Piacentini, Andrea Tartari, M. Platino, Martin Giard, P. Chanial, Jonathan Aumont, C. Scóccola, M.-A. Bigot-Sazy, Alessandro Paiella, Lucio Piccirillo, C. Kristukat, Federico Pezzotta, Carole Tucker, A. Passerini, Sophie Henrot-Versille, J.-Ch. Hamilton, Nicola Vittorio, M. De Leo, M. Tristram, J. G. Alberro, G. D' Alessandro, L. M. Mundo, Cristian Franceschet, Massimo Gervasi, B. Maffei, L. Grandsire, M. De Petris, K. Ganga, Francesco Cavaliere, S. Marnieros, S. Loucatos, Michel Piat, D. Fracchia, J. Bonaparte, Créidhe O'Sullivan, Laurent Bergé, N. Bleurvacq, A. Mattei, J. Bonis, Gianluca Polenta, L. Mele, J.-P. Bernard, W. Marty, E. Olivieri, H. Pastoriza, Peter Timbie, D. Harari, A. Mennella, D. L. Burke, F. Columbro, Steve Torchinsky, S. Melhuish, Bruce Rafael Mellado Garcia, L.P. Ferreyro, M. Stolpovskiy, Gustavo E. Romero, M. M. Gamboa Lerena, D. T. Hoang, R. Puddu, F. Incardona, D. Bennett, Alessandro Coppolecchia, M. González, S. Spinelli, T. Louis, C. Chapron, P. de Bernardis, P. Ringegni, Marcin Gradziel, François Pajot, A. Fasciszewski, G. Stankowiak, D. Viganò, Luca Lamagna, Alessandro Schillaci, R. Charlassier, L. Dumoulin, J.-P. Thermeau, Andrew May, G. de Gasperis, S. Banfi, Y. Giraud-Heraud, Silvia Masi, J. Kaplan, M. E. García Redondo, J.D. Murphy, B. Bélier, J.M. Salum, S. Dheilly, J. A. Murphy, M. Gaspard, L. A. Montier, Elia S. Battistelli, D. Gayer, F. Voisin, D. Prêle, Gregory S. Tucker, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Université Fédérale Toulouse Midi-Pyrénées-Centre National d'Études Spatiales [Toulouse] (CNES)-Météo France-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Université Fédérale Toulouse Midi-Pyrénées-Centre National d'Études Spatiales [Toulouse] (CNES)-Météo France-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS), Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Centre de Nanosciences et de Nanotechnologies (C2N), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Mele, L, Ade, P, Alberro, J, Almela, A, Amico, G, Arnaldi, L, Auguste, D, Aumont, J, Azzoni, S, Banfi, S, Battistelli, E, Ba, A, B lier, B, Bennett, D, Berge, L, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bleurvacq, N, Bonaparte, J, Bonis, J, Bottani, A, Bunn, E, Burke, D, Buzi, D, Cavaliere, F, Chanial, P, Chapron, C, Charlassier, R, Columbro, F, Coppolecchia, A, D'Alessandro, G, Bernardis, P, Gasperis, G, Leo, M, Petris, M, Dheilly, S, Dumoulin, L, Etchegoyen, A, Fasciszewski, A, Ferreyro, L, Fracchia, D, Franceschet, C, Lerena, M, Ganga, K, Garcia, B, Redondo, M, Gaspard, M, Gayer, D, Gervasi, M, Giard, M, Gilles, V, Giraud-Heraud, Y, Gomez Berisso, M, Gonzalez, M, Gradziel, M, Grandsire, L, Hamilton, J, Harari, D, Henrot-Versille, S, Hoang, D, Incardona, F, Jules, E, Kaplan, J, Kristukat, C, Lamagna, L, Loucatos, S, Louis, T, Maffei, B, Marnieros, S, Marty, W, Masi, S, Mattei, A, May, A, Mcculloch, M, Melhuish, S, Mennella, A, Montier, L, Mousset, L, Mundo, L, Murphy, J, Nati, F, Olivieri, E, Oriol, C, O'Sullivan, C, Paiella, A, Pajot, F, Passerini, A, Pastoriza, H, Pelosi, A, Perbost, C, Perciballi, M, Pezzotta, F, Piacentini, F, Piat, M, Piccirillo, L, Pisano, G, Platino, M, Polenta, G, Pr le, D, Puddu, R, Rambaud, D, Ringegni, P, Romero, G, Salatino, M, Salum, J, Schillaci, A, Scoccola, C, Scully, S, Spinelli, S, Stankowiak, G, Stolpovskiy, M, Tartari, A, Thermeau, J, Timbie, P, Tomasi, M, Torchinsky, S, Tristram, M, Tucker, G, Tucker, C, Vigan, D, Vittorio, N, Voisin, F, Wicek, F, Zannoni, M, and Zullo, A
Subjects: History, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], interferometer, Cosmic microwave background, Polarimetry, cosmic background radiation: polarization, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Cosmology, Education, law.invention, qubic, polarimetry, bolometric interferometry, cmb, b modes, FIS/05 - ASTRONOMIA E ASTROFISICA, Optics, bolometer, law, 0103 physical sciences, Astronomical interferometer, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, 010303 astronomy & astrophysics, detector: design, ComputingMilieux_MISCELLANEOUS, Physics, polarization, business.industry, Gravitational wave, Bolometer, Astrophysics::Instrumentation and Methods for Astrophysics, Polarization (waves), calibration, polarization: monitoring, Computer Science Applications, Bolometers, Cosmology, Interferometers, Inflation, Cosmic microwave background, Polarization, Interferometry, modulation, business, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], performance
Abstract: Measurements of cosmic microwave background (CMB) polarization may reveal the presence of a background of gravitational waves produced during cosmic inflation, providing thus a test of inflationary models. The Q&U Bolometric Interferometer for Cosmology (QUBIC) is an experiment designed to measure the CMB polarization. It is based on the novel concept of bolometric interferometry, which combines the sensitivity of bolometric detectors with the properties of beam synthesis and control of calibration offered by interferometers. To modulate and extract the input polarized signal of the CMB, QUBIC exploits Stokes polarimetry based on a rotating half-wave plate (HWP). In this work, we illustrate the design of the QUBIC instrument, focusing on the polarization modulation system, and we present preliminary results of beam calibrations and the performance of the HWP rotator at 300 K.
Published: 2021

15. Calibration of QUBIC: The Q and U bolometric interferometer for cosmology (Erratum)

Author: Andrea Tartari, L. Montier, H. Pastoriza, D. Bennett, M. Wright, Bruno Maffei, Mark McCulloch, S. Marnieros, E. Rasztocky, M. Perciballi, G. S. Tucker, J. Aumont, D. Melo, J. Bonaparte, E. Olivieri, A. Pelosi, D. Auguste, M. Giard, Diego D. Harari, J. P. Bernard, B. García, D. Burke, A. Fasciszewski, L. Piccirillo, C. Kristukat, C. Tucker, J. D. Murphy, Andrew May, J. Bonis, A. Mattei, L. Bergé, D. Rambaud, V. Gilles, F. Wicek, M. R. Hampel, Benoit Belier, M. González, S. Azzoni, Sophie Henrot-Versille, F. Pajot, Giampaolo Pisano, E. Jules, C. Oriol, L. H. Arnaldi, W. Marty, L. Dumoulin, M. Gaspard, M. Gomez Berisso, and P. A. R. Ade
Subjects: Physics, Interferometry, Optics, business.industry, law, Optical engineering, Bolometer, Calibration, business, Cosmology, law.invention
Published: 2021

16. Detection chain and electronic readout of the QUBIC instrument

Author: L. M. Mundo, S. Marnieros, D. Fracchia, A. Mattei, R. Puddu, S. Spinelli, A. Passerini, Federico Nati, V. Gilles, K. Ganga, B. García, Giuseppe D'Alessandro, F. Wicek, P. A. R. Ade, Diego Harari, J. Bonaparte, F. Pezzotta, Massimo Gervasi, F. Incardona, M. E. García Redondo, M. Platino, L. Grandsire, J. D. Murphy, Damien Rambaud, E. Jules, M. Wright, C. Kristukat, L. Dumoulin, E. Olivieri, B. Maffei, Alessandro Paiella, J. Bonis, J.-P. Thermeau, D. Prêle, H. Pastoriza, Michel Piat, M. Gómez Berisso, M. Perciballi, F. Piacentini, D. Burke, Mark McCulloch, A. Zullo, L. H. Arnaldi, Giampaolo Pisano, A. Baù, L.P. Ferreyro, C. Perbost, C. Duca, C. Franceschet, L. Mousset, J. A. Murphy, D. Viganò, Gustavo E. Romero, Martin Giard, Emory F. Bunn, Alessandro Schillaci, Gregory S. Tucker, P. Chanial, L. A. Montier, M.-A. Bigot-Sazy, Alejandro Almela, A. Etchegoyen, Marco Bersanelli, E. Rasztocky, M. Gaspard, Nicola Vittorio, Mario Zannoni, A. Pelosi, S. Azzoni, P. de Bernardis, T. D. Hoang, S. Banfi, W. Marty, A. Mennella, S. Scully, M. M. Gamboa Lerena, Elia S. Battistelli, Andrea Tartari, J.G. Alberro, D. Gayer, Alessandro Coppolecchia, C. Oriol, J.M. Salum, J. Aumont, D. Bennett, S. Loucatos, Silvia Masi, Marcin Gradziel, S. Dheilly, François Pajot, A.C. Cobos Cerutti, C. Chapron, A. Fasciszewski, J.-Ch. Hamilton, M. González, M. Tomasi, Créidhe O'Sullivan, Laurent Bergé, G. Amico, D. Buzi, A.D. Supanitsky, D. Auguste, Gianluca Polenta, Francesco Cavaliere, P. Ringegni, G. Stankowiak, Luca Lamagna, Steve Torchinsky, L. Mele, Andrew May, Peter Timbie, F. Columbro, F. Voisin, C. Tucker, J. Kaplan, B. Bélier, R. Charlassier, M. R. Hampel, G. de Gasperis, C. Scóccola, Lucio Piccirillo, Thibaut Louis, Sophie Henrot-Versille, D. Melo, J.-Ph. Bernard, M. Stolpovskiy, Y. Giraud-Héraud, M. De Leo, M. De Petris, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Observatoire de Paris - Site de Paris (OP), Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Zmuidzinas, Jonas, Gao, Jian-Rong, Stankowiak, G, Piat, M, Battistelli, E, D'Alessandro, G, de Bernardis, P, De Petris, M, González, M, Grandsire, L, Hamilton, J, Hoang, T, Masi, S, Marnieros, S, Mennella, A, Mousset, L, O'Sullivan, C, Prêle, D, Tartari, A, Thermeau, J, Torchinsky, S, Voisin, F, Zannoni, M, Ade, P, Alberro, J, Almela, A, Amico, G, Arnaldi, L, Auguste, D, Aumont, J, Azzoni, S, Banfi, S, Bélier, B, Baù, A, Bennett, D, Bergé, L, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bonaparte, J, Bonis, J, Bunn, E, Burke, D, Buzi, D, Cavaliere, F, Chanial, P, Chapron, C, Charlassier, R, Cobos Cerutti, A, Columbro, F, Coppolecchia, A, de Gasperis, G, De Leo, M, Dheilly, S, Duca, C, Dumoulin, L, Etchegoyen, A, Fasciszewski, A, Ferreyro, L, Fracchia, D, Franceschet, C, Gamboa Lerena, M, Ganga, K, García, B, García Redondo, M, Gaspard, M, Gayer, D, Gervasi, M, Giard, M, Gilles, V, Giraud-Héraud, Y, Gómez Berisso, M, Gradziel, M, Hampel, M, 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, Murphy, J, 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, Ringegni, P, Romero, G, Rasztocky, E, Salum, J, Schillaci, A, Scóccola, C, Scully, S, Spinelli, S, Stolpovskiy, M, Supanitsky, A, Timbie, P, Tomasi, M, Tucker, G, Tucker, C, Viganò, D, Vittorio, N, Wicek, F, Wright, M, and Zullo, A
Subjects: QUBIC, Cosmic microwave background, 02 engineering and technology, CMB, SQUID, 7. Clean energy, Superconducting QUantum Interference Device, 030218 nuclear medicine & medical imaging, law.invention, TDM, FIS/05 - ASTRONOMIA E ASTROFISICA, 03 medical and health sciences, 020210 optoelectronics & photonics, 0302 clinical medicine, Optics, Application-specific integrated circuit, law, Cosmic Microwave Background, B-modes, 0202 electrical engineering, electronic engineering, information engineering, Noise-equivalent power, [PHYS]Physics [physics], Physics, TES, business.industry, Bolometer, Time constant, CMB instrumentation, bolometric interferometry, Transition Edge Sensor, Interferometry, Transition edge sensor, business
Abstract: International audience; The Q and U Bolometric Interferometer for Cosmology (QUBIC) Technical Demonstrator (TD) aiming to shows the feasibility of the combination of interferometry and bolometric detection. The electronic readout system is based on an array of 128 NbSi Transition Edge Sensors cooled at 350mK readout with 128 SQUIDs at 1K controlled and amplified by an Application Specific Integrated Circuit at 40K. This readout design allows a 128:1 Time Domain Multiplexing. We report the design and the performance of the detection chain in this paper. The technological demonstrator unwent a campaign of test in the lab. Evaluation of the QUBIC bolometers and readout electronics includes the measurement of I-V curves, time constant and the Noise Equivalent Power. Currently the mean Noise Equivalent Power is ~ 2 x 10-16W= p √Hz
Published: 2020

17. A minimal power-spectrum-based moment expansion for CMB B-mode searches

Author: T. Matsumura, S. Azzoni, David Alonso, Maximilian H. Abitbol, A. Gough, and Nobuhiko Katayama
Subjects: Physics, Spectral index, Cosmology and Nongalactic Astrophysics (astro-ph.CO), 010308 nuclear & particles physics, Computer Science::Information Retrieval, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Spectral density, Astronomy and Astrophysics, Scale (descriptive set theory), Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Upper and lower bounds, Small set, Standard deviation, 0103 physical sciences, Statistical physics, Decorrelation, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: The characterization and modeling of polarized foregrounds has become a critical issue in the quest for primordial B-modes. A typical method to proceed is to factorize and parametrize the spectral properties of foregrounds and their scale dependence (i.e. assuming that foreground spectra are well described everywhere by their sky average). Since in reality foreground properties vary across the Galaxy, this assumption leads to inaccuracies in the model that manifest themselves as biases in the final cosmological parameters (in this case the tensor-to-scalar ratio r). This is particularly relevant for surveys over large fractions of the sky, such as the Simons Observatory (SO), where the spectra should be modeled over a distribution of parameter values. Here we propose a method based on the existing “moment expansion” approach to address this issue in a power-spectrum-based analysis that is directly applicable in ground-based multi-frequency data. Additionally, the method uses only a small set of parameters with simple physical interpretation, minimizing the impact of foreground uncertainties on the final B-mode constraints. We validate the method using SO-like simulated observations, recovering an unbiased estimate of the tensor-to-scalar ratio r with standard deviation σ(r) ≃ 0.003, compatible with official forecasts. When applying the method to the public BICEP2/Keck data, we find an upper bound r < 0.06 (95% C.L.), compatible with the result found by BICEP2/Keck when parametrizing spectral index variations through a scale-independent frequency decorrelation parameter. We also discuss the formal similarities between the power spectrum-based moment expansion and methods used in the analysis of CMB lensing.
Published: 2020

18. TES Bolometer Arrays for the QUBIC B-Mode CMB Experiment

Author: F. Piacentini, S. Loucatos, A. Zullo, C. Oriol, J.-Ch. Hamilton, Silvia Masi, Peter Timbie, F. Columbro, P. A. R. Ade, Francesco Cavaliere, S. Azzoni, M. Gómez Berisso, G. Amico, J. G. Alberro, D. Buzi, A. Bottani, A. Passerini, J. Bonis, Steve Torchinsky, V. Gilles, A. Pelosi, J. Aumont, Nicola Vittorio, B. Maffei, C. Chapron, Michel Piat, J. Bonaparte, Bruce Rafael Mellado Garcia, E. Olivieri, Alessandro Coppolecchia, Giampaolo Pisano, François Pajot, A. Fasciszewski, Luca Lamagna, Emory F. Bunn, Alejandro Almela, M. E. García Redondo, M. Platino, L. M. Mundo, W. Marty, R. Charlassier, J.-P. Thermeau, C. Kristukat, Federico Pezzotta, S. Marnieros, J. Kaplan, D. Fracchia, Andrea Tartari, A. Mattei, G. de Gasperis, M. De Leo, D. T. Hoang, Y. Giraud-Heraud, B. Bélier, P. Ringegni, M. De Petris, N. Bleurvacq, Massimo Gervasi, Cristian Franceschet, G. Stankowiak, E. Jules, Andrew May, Gustavo E. Romero, F. Incardona, Marcin Gradziel, J.M. Salum, S. Dheilly, L. Mele, P. de Bernardis, H. Pastoriza, D. Harari, F. Voisin, P. Battaglia, Alessandro Schillaci, S. Spinelli, L.P. Ferreyro, M. Gaspard, M. Tomasi, A. Etchegoyen, Marco Bersanelli, D. Viganò, Mario Zannoni, D. Prêle, S. Scully, A. Mennella, M. M. Gamboa Lerena, Créidhe O'Sullivan, Laurent Bergé, Gianluca Polenta, D. Bennett, J. D. Murphy, M. González, Alessandro Paiella, Damien Rambaud, F. Wicek, Mark McCulloch, Lucio Piccirillo, Thibaut Louis, Sophie Henrot-Versille, J.-Ph. Bernard, M. Stolpovskiy, D. Burke, C. Perbost, J. A. Murphy, P. Chanial, L. A. Montier, Roberto Puddu, Elia S. Battistelli, D. Gayer, S. Banfi, Gregory S. Tucker, L. Grandsire, Giuseppe D'Alessandro, Martin Giard, M.-A. Bigot-Sazy, Federico Nati, M. Perciballi, L. Dumoulin, L. H. Arnaldi, Simon J. Melhuish, A. Baù, L. Mousset, Maria Salatino, D. Auguste, C. Scóccola, Carole Tucker, K. Ganga, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Marnieros, S, Ade, P, Alberro, J, Almela, A, Amico, G, Arnaldi, L, Auguste, D, Aumont, J, Azzoni, S, Banfi, S, Battaglia, P, Battistelli, E, Bau, A, Belier, B, Bennett, D, Berge, L, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bleurvacq, N, Bonaparte, J, Bonis, J, Bottani, A, Bunn, E, Burke, D, Buzi, D, Cavaliere, F, Chanial, P, Chapron, C, Charlassier, R, Columbro, F, Coppolecchia, A, D'Alessandro, G, de Bernardis, P, De Gasperis, G, De Leo, M, De Petris, M, Dheilly, S, Dumoulin, L, Etchegoyen, A, Fasciszewski, A, Ferreyro, L, Fracchia, D, Franceschet, C, Gamboa Lerena, M, Ganga, K, Garcia, B, Garcia Redondo, M, Gaspard, M, Gayer, D, Gervasi, M, Giard, M, Gilles, V, Giraud-Heraud, Y, Gomez Berisso, M, Gonzalez, M, Gradziel, M, Grandsire, L, Hamilton, J, Harari, D, Henrot-Versille, S, Hoang, D, Incardona, F, Jules, E, Kaplan, J, Kristukat, C, Lamagna, L, Loucatos, S, Louis, T, Maffei, B, Marty, W, Masi, S, Mattei, A, May, A, Mcculloch, M, Mele, L, Melhuish, S, Mennella, A, Montier, L, Mousset, L, Mundo, L, Murphy, J, Nati, F, Olivieri, E, Oriol, C, O'Sullivan, C, Paiella, A, Pajot, F, Passerini, A, Pastoriza, H, Pelosi, A, Perbost, C, Perciballi, M, Pezzotta, F, Piacentini, F, Piat, M, Piccirillo, L, Pisano, G, Platino, M, Polenta, G, Prele, D, Puddu, R, Rambaud, D, Ringegni, P, Romero, G, Salatino, M, Salum, J, Schillaci, A, Scoccola, C, Scully, S, Spinelli, S, Stankowiak, G, Stolpovskiy, M, Tartari, A, Thermeau, J, Timbie, P, Tomasi, M, Torchinsky, S, Tucker, G, Tucker, C, Vigano, D, Vittorio, N, Voisin, F, Wicek, F, Zannoni, M, and Zullo, A
Subjects: Fabrication, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Cosmic microwave background, Cryogenic detector, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, 010305 fluids & plasmas, law.invention, FIS/05 - ASTRONOMIA E ASTROFISICA, Optics, law, 0103 physical sciences, General Materials Science, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, ComputingMilieux_MISCELLANEOUS, Physics, business.industry, Settore FIS/05, Transition edge sensors, Bolometer, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Condensed Matter Physics, Polarization (waves), Atomic and Molecular Physics, and Optics, Interferometry, Cryogenic detectors, business
Abstract: International audience; QUBIC is a ground-based experiment aiming to measure the B-mode polarization of the cosmic microwave background. The developed instrument is an innovative two-frequency band bolometric interferometer that will operate at 300 mK with NbSi TES arrays. In this paper, we describe the fabrication process of the detectors.
Published: 2020

19. A Closed-Cycle Miniature Dilution Refrigerator for a Fast-Cooldown 100 mK Detector Wafer Test Cryostat

Author: S. T. Chase, J. Wenninger, S. Azzoni, Lucio Piccirillo, Andrew May, L. C. Kenny, A. Suzuki, Simon J. Melhuish, Gabriele Coppi, Azzoni, S, May, A, Chase, S, Coppi, G, Kenny, L, Melhuish, S, Piccirillo, L, Suzuki, A, and Wenninger, J
Subjects: Cryostat, cosmic microwave background, Materials science, 010308 nuclear & particles physics, Nuclear engineering, Cryogenic, Detector, Refrigerator car, Cryogenics, Large format, Dilution, Condensed Matter Physics, dilution, 01 natural sciences, Atomic and Molecular Physics, and Optics, Cosmic microwave background, cryogenics, 0103 physical sciences, Cooling power, General Materials Science, Wafer, Dilution refrigerator, 010306 general physics, Instrumentation
Abstract: The forthcoming generation of cosmic microwave background polarization observatories is developing large format detector arrays which will operate at 100 mK. Given the volume of detector wafers that will be required, fast-cooldown 100 mK test cryostats are increasingly needed. A miniature dilution refrigerator (MDR) has been developed for this purpose and is reported. The MDR is precooled by a double-stage $${^3}\mathrm{He}$$3He–$${^4}\mathrm{He}$$4He Chase Research Cryogenics sorption refrigerator. The test cryostat based on this MDR will enable fast cooldown to 100 mK to support rapid feedback testing of detector wafers fabricated for the Simons Observatory. The MDR has been designed to provide a 100 mK stage to be retrocompatible with existing CRC10 sorption coolers, reducing the base temperature from 250 mK for the new generation of detectors. Other 250 mK cryostats can be retrofitted in the same way. This configuration will meet the cryogenic requirements for single-wafer testing, providing 5–10 $$\upmu \mathrm{W}$$μW of cooling power at 100 mk for over 8 h. The system operates in a closed cycle, thereby avoiding external gas connections and cold o-rings. No moving parts are required, with the system operated entirely by heaters.
Published: 2020

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

Author: D. Melo, Peter T. Timbie, G. Polenta, L. Mele, S. Loucatos, K. Ganga, Alejandro Almela, Luca Lamagna, W. Marty, Gustavo E. Romero, Giuseppe D'Alessandro, D. Burke, Emory F. Bunn, H. Pastoriza, D. Harari, L. Montier, E. Rasztocky, F. Piacentini, C. Duca, L.P. Ferreyro, L. M. Mundo, D. Prêle, Andrew May, C. Perbost, J.-Ph. Bernard, M. Stolpovskiy, P. de Bernardis, Francesco Cavaliere, J. A. Murphy, P. A. R. Ade, M. Platino, Federico Nati, Créidhe O'Sullivan, M. Wright, Cristian Franceschet, M. Gómez Berisso, M. Giard, M. Gaspard, P. Chanial, E. Olivieri, Alessandro Schillaci, D. Fracchia, C. Kristukat, Y. Giraud-Héraud, A. Baù, L. Mousset, J. Kaplan, C. Oriol, A. Mattei, F. Columbro, J. Bonaparte, M. E. García Redondo, B. Bélier, Nicola Vittorio, L. Grandsire, Silvia Masi, J. Bonis, C. Tucker, G. Amico, Federico Pezzotta, M. Piat, J.-P. Thermeau, F. Incardona, D. Buzi, A. Mennella, Marcin Gradziel, A.D. Supanitsky, J. D. Murphy, Gregory S. Tucker, E. Jules, A. Passerini, V. Gilles, J.M. Salum, S. Dheilly, M. Perciballi, M. M. Gamboa Lerena, F. Voisin, S. A. Torchinsky, Alessandro Paiella, Damien Rambaud, Bruno Maffei, J.G. Alberro, A.C. Cobos Cerutti, C. Chapron, L. Bergé, Mark McCulloch, S. Marnieros, S. Azzoni, D. Auguste, Giampaolo Pisano, F. Pajot, F. Wicek, R. Puddu, Elia S. Battistelli, D. Gayer, S. Banfi, L. H. Arnaldi, J. Aumont, Massimo Gervasi, M. De Leo, D. Bennett, A. Zullo, S. Spinelli, M. Tomasi, Lucio Piccirillo, C. Scóccola, M. De Petris, A. Etchegoyen, Thibaut Louis, Marco Bersanelli, Sophie Henrot-Versille, Mario Zannoni, M.-A. Bigot-Sazy, M. González, A. Pelosi, S. Scully, P. Ringegni, G. Stankowiak, J.-Ch. Hamilton, L. Dumoulin, A. Tartari, D. Viganò, R. Charlassier, M. R. Hampel, G. de Gasperis, Bruce Rafael Mellado Garcia, Alessandro Coppolecchia, A. Fasciszewski, Zmuidzinas, Jonas, Murphy, J, Burke, D, Gamboa Lerena, M, Hamilton, J, Mousset, L, De Petris, M, O'Sullivan, C, Torchinsky, S, Ade, P, Alberro, J, Almela, A, Amico, G, Arnaldi, L, Auguste, D, Aumont, J, Azzoni, S, Banfi, S, Bélier, B, Battistelli, E, Baù, A, Bennett, D, Bergé, L, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bonaparte, J, Bonis, J, Bunn, E, Buzi, D, Cavaliere, F, Chanial, P, Chapron, C, Charlassier, R, Cobos Cerutti, A, Columbro, F, Coppolecchia, A, D'Alessandro, G, De Gasperis, G, De Leo, M, Dheilly, S, Duca, C, Dumoulin, L, Etchegoyen, A, Fasciszewski, A, Ferreyro, L, Fracchia, D, Franceschet, C, Ganga, K, García, B, García Redondo, M, Gaspard, M, Gayer, D, Gervasi, M, Giard, M, Gilles, V, Giraud-Heraud, Y, Grandsire, L, Gómez Berisso, M, González, M, Gradziel, M, Hampel, M, 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, Mennella, A, Montier, L, Mundo, L, 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, Prêle, D, Puddu, R, Rambaud, D, Rasztocky, E, Ringegni, P, Romero, G, Salum, J, Scóccola, C, Schillaci, A, Scully, S, Spinelli, S, Stankowiak, G, Stolpovskiy, M, Supanitsky, A, Tartari, A, Thermeau, J, Timbie, P, Tomasi, M, Tucker, G, Tucker, C, Viganò, D, Vittorio, N, Voisin, F, Wicek, F, Wright, M, Zannoni, M, Zullo, A, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Observatoire de Paris - Site de Paris (OP), Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), and Gao, Jian-Rong
Subjects: QUBIC, Instrumentation, interferometer, Cosmic microwave background, measurement methods, CDM, cosmic background radiation: polarization, 02 engineering and technology, Astrophysics::Cosmology and Extragalactic Astrophysics, CMB, 7. Clean energy, 01 natural sciences, Cosmology, law.invention, 010309 optics, FIS/05 - ASTRONOMIA E ASTROFISICA, Optics, bolometer, B-mode polarisation, law, 0103 physical sciences, Cosmic Microwave Background, Calibration, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], measure: spectral, detector: design, data-analysis, Physics, instrumentation, calibration, TES, business.industry, Instrument Data, Bolometer, transition edge sensor, Astrophysics::Instrumentation and Methods for Astrophysics, 021001 nanoscience & nanotechnology, sensitivity, Interferometry, B-mode, Transition edge sensor, 0210 nano-technology, business
Abstract: International audience; QUBIC (a Q and U Bolometric Interferometer for Cosmology) is a next generation cosmology experiment designed to detect the B-mode polarisation of the Cosmic Microwave Background (CMB). A B-mode detection is hard evidence of Inflation in the ΛCDM model. QUBIC aims to accomplish this by combining novel technologies to achieve the sensitivity required to detect the faint B-mode signal. QUBIC uses technologies such as a rotating half-wave plate, cryogenics, interferometric horns with self-calibration switches and transition edge sensor bolometers. A Technical Demonstrator (TD) is currently being calibrated in APC in Paris before observations in Argentina in 2021. As part of the calibration campaign, the spectral response of the TD is measured to test and validate QUBIC's spectro-imaging capability. This poster gives an overview of the methods used to measure the spectral response and a comparison of the instrument data with theoretical predictions and optical simulations.
Published: 2020

21. The Simons Observatory: gain, bandpass and polarization-angle calibration requirements for B-mode searches

Author: Valentina Fanfani, Mario Zannoni, Mark J. Devlin, J. Colin Hill, Josquin Errard, Aritoki Suzuki, Gabriele Coppi, Edward J. Wollack, Julien Carron, Adrian T. Lee, Thibaut Louis, Davide Poletti, Mathew S. Madhavacheril, Michael L. Brown, Baptiste Jost, Brian Keating, Federico Nati, P. Daniel Meerburg, S. Azzoni, Maximilian H. Abitbol, Haruki Nishino, Sara M. Simon, Michael J. Randall, Jacob Spisak, Lyman A. Page, Bradley R. Johnson, Jo Dunkley, Yuji Chinone, Aamir Ali, David Alonso, Grant Teply, Jeff McMahon, Carlo Baccigalupi, Clara Vergès, Jens Chluba, Aditya Rotti, Giuseppe Puglisi, Nicholas Galitzki, Kevin D. Crowley, Martina Gerbino, Zhilei Xu, Jack Lashner, Erminia Calabrese, Kevin T. Crowley, Darcy Barron, Akito Kusaka, Nicoletta Krachmalnicoff, Heather McCarrick, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Van Swinderen Institute for Particle Physics and G, High-Energy Frontier, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), APC - Cosmologie, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), ANR-17-CE31-0022,BxB,Champs B interstellaires et modes B de l'inflation(2017), ANR-17-CE23-0002,B3DCMB,Big Bang à partir de Big Data (du fond diffus cosmologique)(2017), Abitbol, M, Alonso, D, Simon, S, Lashner, J, Crowley, K, Ali, A, Azzoni, S, Baccigalupi, C, Barron, D, Brown, M, Calabrese, E, Carron, J, Chinone, Y, Chluba, J, Coppi, G, Devlin, M, Dunkley, J, Errard, J, Fanfani, V, Galitzki, N, Gerbino, M, Colin Hill, J, Johnson, B, Jost, B, Keating, B, Krachmalnicoff, N, Kusaka, A, Lee, A, Louis, T, Madhavacheril, M, Mccarrick, H, Mcmahon, J, Daniel Meerburg, P, Nati, F, Nishino, H, Page, L, Poletti, D, Puglisi, G, Randall, M, Rotti, A, Spisak, J, Suzuki, A, Teply, G, Vergès, C, Wollack, E, Xu, Z, and Zannoni, M
Subjects: CMBR polarisation, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Calibration (statistics), Cosmic microwave background, FOS: Physical sciences, Parameter space, Residual, Atomic, 01 natural sciences, Particle and Plasma Physics, Settore FIS/05 - Astronomia e Astrofisica, Band-pass filter, Observatory, 0103 physical sciences, CMBR experiments, Nuclear, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Instrumentation and Methods for Astrophysics (astro-ph.IM), 010303 astronomy & astrophysics, CMBR polarization, Physics, Settore FIS/05, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, cosmological parameters from CMBR, Molecular, Astronomy and Astrophysics, Polarization (waves), Nuclear & Particles Physics, gravitational waves and CMBR polarization, Computational physics, astro-ph.CO, CMBR experiment, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Instrumentation and Methods for Astrophysics, Focus (optics), Astronomical and Space Sciences, astro-ph.IM, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We quantify the calibration requirements for systematic uncertainties for next-generation ground-based observatories targeting the large-angle $B$-mode polarization of the Cosmic Microwave Background, with a focus on the Simons Observatory (SO). We explore uncertainties on gain calibration, bandpass center frequencies, and polarization angles, including the frequency variation of the latter across the bandpass. We find that gain calibration and bandpass center frequencies must be known to percent levels or less to avoid biases on the tensor-to-scalar ratio $r$ on the order of $\Delta r\sim10^{-3}$, in line with previous findings. Polarization angles must be calibrated to the level of a few tenths of a degree, while their frequency variation between the edges of the band must be known to ${\cal O}(10)$ degrees. Given the tightness of these calibration requirements, we explore the level to which residual uncertainties on these systematics would affect the final constraints on $r$ if included in the data model and marginalized over. We find that the additional parameter freedom does not degrade the final constraints on $r$ significantly, broadening the error bar by ${\cal O}(10\%)$ at most. We validate these results by reanalyzing the latest publicly available data from the BICEP2/Keck collaboration within an extended parameter space covering both cosmological, foreground and systematic parameters. Finally, our results are discussed in light of the instrument design and calibration studies carried out within SO., Comment: 41 pages, 18 figures
Published: 2021

22. Supplementary material to 'Cryoconite as an efficient monitor for the deposition of radioactive fallout in glacial environments'

Author: Giovanni Baccolo, Edyta Łokas, Paweł Gaca, Dario Massabò, Roberto Ambrosini, Roberto S. Azzoni, Caroline Clason, Biagio Di Mauro, Andrea Franzetti, Massimiliano Nastasi, Michele Prata, Paolo Prati, Ezio Previtali, Barbara Delmonte, and Valter Maggi
Published: 2019

23. QUBIC: the Q \& U Bolometric Interferometer for Cosmology

Author: E. S. Battistelli, P. Ade, J. G. Alberro, A. Almela, G. Amico, L. H. Arnaldi, D. Auguste, J. Aumont, S. Azzoni, S. Banfi, P. Battaglia, A. Baù, B. Bélier, D. Bennett, L. Bergé, J.-Ph. Bernard, M. Bersanelli, M.-A. Bigot-Sazy, N. Bleurvacq, J. Bonaparte, J. Bonis, A. Bottani, E. Bunn, D. Burke, D. Buzi, A. Buzzelli, F. Cavaliere, P. Chanial, C. Chapron, R. Charlassier, F. Columbro, G. Coppi, A. Coppolecchia, G. D’Alessandro, P. de Bernardis, G. De Gasperis, M. De Leo, M. De Petris, S. Dheilly, A. Di Donato, 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, A. Gault, D. Gayer, M. Gervasi, M. Giard, V. Gilles, Y. Giraud-Heraud, M. Gómez Berisso, M. González, M. Gradziel, L. Grandsire, 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, R. Luterstein, B. Maffei, S. Marnieros, W. Marty, S. Masi, A. Mattei, A. May, M. McCulloch, M. C. Medina, L. Mele, S. Melhuish, A. Mennella, L. Montier, L. Mousset, L. M. Mundo, J. A. Murphy, J. D. Murphy, F. Nati, E. Olivieri, C. Oriol, C. O’Sullivan, 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, P. Ringegni, G. E. Romero, M. Salatino, J. M. Salum, A. Schillaci, C. Scóccola, S. Scully, S. Spinelli, G. Stankowiak, M. Stolpovskiy, F. Suarez, A. Tartari, J.-P. Thermeau, P. Timbie, M. Tomasi, S. Torchinsky, M. Tristram, C. Tucker, G. Tucker, S. Vanneste, D. Viganò, N. Vittorio, F. Voisin, B. Watson, F. Wicek, M. Zannoni, A. Zullo, Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), QUBIC, Battistelli, E, Ade, P, Alberro, J, Almela, A, Amico, G, Arnaldi, L, Auguste, D, Aumont, J, Azzoni, S, Banfi, S, Battaglia, P, Bau, A, Bélier, B, Bennett, D, Bergé, L, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bleurvacq, N, Bonaparte, J, Bonis, J, Bottani, A, Bunn, E, Burke, D, Buzi, D, Buzzelli, A, Cavaliere, F, Chanial, P, Chapron, C, Charlassier, R, Columbro, F, Coppi, G, Coppolecchia, A, D’Alessandro, G, de Bernardis, P, De Gasperis, G, De Leo, M, De Petris, M, Dheilly, S, Di Donato, A, Dumoulin, L, Etchegoyen, A, Fasciszewski, A, Ferreyro, L, Fracchia, D, Franceschet, C, Lerena, M, Ganga, K, García, B, Redondo, M, Gaspard, M, Gault, A, Gayer, D, Gervasi, M, Giard, M, Gilles, V, Giraud-Heraud, Y, Berisso, M, González, M, Gradziel, M, Grandsire, L, Hamilton, J, Harari, D, Haynes, V, Henrot-Versillé, S, Hoang, D, Incardona, F, Jules, E, Kaplan, J, Korotkov, A, Kristukat, C, Lamagna, L, Loucatos, S, Louis, T, Luterstein, R, Maffei, B, Marnieros, S, Marty, W, Masi, S, Mattei, A, May, A, Mcculloch, M, Medina, M, Mele, L, Melhuish, S, Mennella, A, Montier, L, Mousset, L, Mundo, L, Murphy, J, Nati, F, Olivieri, E, Oriol, C, O’Sullivan, C, Paiella, A, Pajot, F, Passerini, A, Pastoriza, H, Pelosi, A, Perbost, C, Perciballi, M, Pezzotta, F, Piacentini, F, Piat, M, Piccirillo, L, Pisano, G, Platino, M, Polenta, G, Prêle, D, Puddu, R, Rambaud, D, Ringegni, P, Romero, G, Salatino, M, Salum, J, Schillaci, A, Scóccola, C, Scully, S, Spinelli, S, Stankowiak, G, Stolpovskiy, M, Suarez, F, Tartari, A, Thermeau, J, Timbie, P, Tomasi, M, Torchinsky, S, Tristram, M, Tucker, C, Tucker, G, Vanneste, S, Viganò, D, Vittorio, N, Voisin, F, Watson, B, Wicek, F, Zannoni, M, Zullo, A, Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay, Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Observatoire de Paris - Site de Paris (OP), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Centre de Nanosciences et de Nanotechnologies (C2N), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Zmuidzinas, J, Gao, JR, De Bernardis, P, Dalessandro, G, Hoang, T, Osullivan, C, Prele, D, Belier, B, Berge, L, Cobos Cerutti, A, Duca, C, Gamboa Lerena, M, Garcia, B, Garcia Redondo, M, Gomez Berisso, M, Gonzalez, M, Hampel, M, Henrot-Versille, S, Melo, D, Olivicri, E, Rasztocky, E, Scoccola, C, Supanitsky, A, Vigano, D, Wright, M, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), and Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES)
Subjects: cosmological model, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Ciencias Físicas, electormagnetics, cosmic background radiation: polarization, cosmic background radiation, Cosmic microwave background, cosmology, gravitational waves, polarization, bolometric interferometer, stokes polarimeter, transition-edge sensors, 01 natural sciences, Stokes polarimeter, purl.org/becyt/ford/1 [https], SPIE Proceeding, Polarization, propagation, ultraviolet, optical, site, General Materials Science, 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS, Microwave measurement, Settore FIS/05, Astrophysics::Instrumentation and Methods for Astrophysics, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Cosmology, physical optics, Optical interferometry, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], Cosmic Microwave Background, Polarization, Cosmology, Experimental, Astrophysics - Instrumentation and Methods for Astrophysics, CIENCIAS NATURALES Y EXACTAS, signature, Manuscript format, Astrophysics - Cosmology and Nongalactic Astrophysics, Transition-edge sensors, Cosmology and Nongalactic Astrophysics (astro-ph.CO), detector: cryogenics, LaTeX, interferometer, FOS: Physical sciences, anisotropy, Astrophysics::Cosmology and Extragalactic Astrophysics, microwaves, Gravitational waves, FIS/05 - ASTRONOMIA E ASTROFISICA, bolometer, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], inflation, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Ultraviolet sources, Q measurement, beam propagation, Template, Bolometric interferometer, purl.org/becyt/ford/1.3 [https], Optical propagation, sensitivity, optics, Optical polarization, Astronomía, Instruments, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract: The Q & U Bolometric Interferometer for Cosmology, QUBIC, is an innovative experiment designed to measure the polarization of the Cosmic Microwave Background and in particular the signature left therein by the inflationary expansion of the Universe. The expected signal is extremely faint, thus extreme sensitivity and systematic control are necessary in order to attempt this measurement. QUBIC addresses these requirements using an innovative approach combining the sensitivity of Transition Edge Sensor cryogenic bolometers, with the deep control of systematics characteristic of interferometers. This makes QUBIC unique with respect to others classical imagers experiments devoted to the CMB polarization. In this contribution we report a description of the QUBIC instrument including recent achievements and the demonstration of the bolometric interferometry performed in lab. QUBIC will be deployed at the observation site in Alto Chorrillos, in Argentina at the end of 2019., Accepted for publication in the Journal of Low Temperature Physics
Published: 2019

24. Atmospheric nitrogen deposition in a highly human impacted area in northern Italy

Author: S. Stevenazzi, M. Masetti, C. Camera, M. Tiepolo, E. S. Ferrari, R. S. Azzoni, L. Alberti, T. Bonomi, M. Masetti, M. Faggioli, S. Stevenazzi, Stevenazzi, S., Masetti, M., Camera, C., Tiepolo, M., Ferrari, E. S., and Azzoni, R. S.
Subjects: ammonium, nitrate, air pollution, precipitation
Abstract: Nitrogen can enter the water cycle through atmospheric depositions on ground and water surfaces, leakages from point and diffuse sources (i.e., sewage treatment plants or sewage systems, fertilizer and manure applications), and erosion processes affecting nitrogen rich soils (EEA, 2005). However, integrating all nitrogen forms, processes and scales is still a major challenge for the understanding and the management of the nitrogen cycle.
Published: 2019

25. QUBIC: using NbSi TESs with a bolometric interferometer to characterize the polarisation of the CMB

Author: Alejandro Almela, L. H. Arnaldi, W. Marty, S. Loucatos, Andrea Tartari, A. Pelosi, J. Aumont, Massimo Gervasi, K. Ganga, Emory F. Bunn, L. Grandsire, Giuseppe D'Alessandro, L. M. Mundo, E. Jules, Victor Haynes, S. Marnieros, C. Chapron, L. Mele, M. Platino, C. Kristukat, D. Fracchia, M. C. Medina, F. Piacentini, A. Gault, D. Prêle, D. T. Hoang, Andrei Korotkov, A. Mattei, M. Gaspard, Damien Rambaud, P. A. R. Ade, Gustavo E. Romero, M. Tomasi, Federico Pezzotta, Y. Giraud-Heraud, S. Vanneste, S. Banfi, J. Bonaparte, A. Etchegoyen, Martin Giard, Marco Bersanelli, Elia S. Battistelli, J.-Ph. Bernard, M. Stolpovskiy, D. Gayer, P. de Bernardis, Marcin Gradziel, F. Wicek, J. Kaplan, M. Gómez Berisso, R. Charlassier, J.G. Alberro, Mark McCulloch, F. Incardona, Asdrúbal Enrique Bottani, Mario Zannoni, Peter Timbie, B. Bélier, V. Gilles, F. Columbro, Luca Lamagna, M. E. García Redondo, M.-A. Bigot-Sazy, A. Zullo, Giampaolo Pisano, S. Scully, Nicola Vittorio, N. Bleurvacq, J.M. Salum, S. Dheilly, Lucio Piccirillo, D. Burke, F. Suarez, A. Passerini, J. Bonis, G. de Gasperis, Maria Salatino, D. Auguste, R. Luterstein, Thibaut Louis, Sophie Henrot-Versille, J. D. Murphy, Gregory S. Tucker, C. Perbost, J. A. Murphy, B. Maffei, P. Chanial, L. A. Montier, Michel Piat, F. Voisin, Alessandro Schillaci, Alessandro Paiella, Roberto Puddu, E. Olivieri, C. Scóccola, Carole Tucker, Andrew May, Bruce Rafael Mellado Garcia, Alessandro Coppolecchia, H. Pastoriza, D. Harari, L. Dumoulin, G. Amico, J.-P. Thermeau, D. Buzi, François Pajot, C. Oriol, M. De Leo, L.P. Ferreyro, Cristian Franceschet, A. Fasciszewski, Alessandro Buzzelli, M. De Petris, S. Spinelli, J.-Ch. Hamilton, Federico Nati, B. Watson, Francesco Cavaliere, M. Perciballi, S. Azzoni, Silvia Masi, A. Di Donato, Créidhe O'Sullivan, Laurent Bergé, D. Viganò, Gabriele Coppi, Steve Torchinsky, Gianluca Polenta, Simon J. Melhuish, A. Baù, L. Mousset, P. Ringegni, G. Stankowiak, A. Mennella, M. M. Gamboa Lerena, D. Bennett, M. González, P. Battaglia, Piat, M, Bélier, B, Bergé, L, Bleurvacq, N, Chapron, C, Dheilly, S, Dumoulin, L, González, M, Grandsire, L, Hamilton, J, Henrot-Versillé, S, Hoang, D, Marnieros, S, Marty, W, Montier, L, Olivieri, E, Oriol, C, Perbost, C, Prêle, D, Rambaud, D, Salatino, M, Stankowiak, G, Thermeau, J, Torchinsky, S, Voisin, F, Ade, P, Alberro, J, Almela, A, Amico, G, Arnaldi, L, Auguste, D, Aumont, J, Azzoni, S, Banfi, S, Battaglia, P, Battistelli, E, Baù, A, Bennett, D, Bernard, J, Bersanelli, M, Bigot-Sazy, M, Bonaparte, J, Bonis, J, Bottani, A, Bunn, E, Burke, D, Buzi, D, Buzzelli, A, Cavaliere, F, Chanial, P, Charlassier, R, Columbro, F, Coppi, G, Coppolecchia, A, D’Alessandro, G, de Bernardis, P, De Gasperis, G, De Leo, M, De Petris, M, Di Donato, A, Etchegoyen, A, Fasciszewski, A, Ferreyro, L, Fracchia, D, Franceschet, C, Gamboa Lerena, M, Ganga, K, García, B, García Redondo, M, Gaspard, M, Gault, A, Gayer, D, Gervasi, M, Giard, M, Gilles, V, Giraud-Heraud, Y, Gómez Berisso, M, Gradziel, M, Harari, D, Haynes, V, Incardona, F, Jules, E, Kaplan, J, Korotkov, A, Kristukat, C, Lamagna, L, Loucatos, S, Louis, T, Luterstein, R, Maffei, B, Masi, S, Mattei, A, May, A, Mcculloch, M, Medina, M, Mele, L, Melhuish, S, Mennella, A, Mousset, L, Mundo, L, Murphy, J, Nati, F, O’Sullivan, C, Paiella, A, Pajot, F, Passerini, A, Pastoriza, H, Pelosi, A, Perciballi, M, Pezzotta, F, Piacentini, F, Piccirillo, L, Pisano, G, Platino, M, Polenta, G, Puddu, R, Ringegni, P, Romero, G, Salum, J, Schillaci, A, Scóccola, C, Scully, S, Spinelli, S, Stolpovskiy, M, Suarez, F, Tartari, A, Timbie, P, Tomasi, M, Tucker, C, Tucker, G, Vanneste, S, Viganò, D, Vittorio, N, Watson, B, Wicek, F, Zannoni, M, Zullo, A, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay, Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, and PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)
Subjects: Cosmology and Nongalactic Astrophysics (astro-ph.CO), TESs, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Physics::Instrumentation and Detectors, Cosmic microwave background, FOS: Physical sciences, Integrated circuit, CMB, TDM, 01 natural sciences, Multiplexing, Cosmology, 010305 fluids & plasmas, law.invention, FIS/05 - ASTRONOMIA E ASTROFISICA, Optics, law, 0103 physical sciences, General Materials Science, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), ComputingMilieux_MISCELLANEOUS, [PHYS]Physics [physics], Physics, business.industry, Cosmology, Instrumentation, Polarization, Cosmic Microwave Background, Cryogenics, Bolometers, Detector, Bolometer, Astrophysics::Instrumentation and Methods for Astrophysics, Condensed Matter Physics, Polarization (waves), Atomic and Molecular Physics, and Optics, Interferometry, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Instrumentation and Methods for Astrophysics, business, TES, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: QUBIC (Q \& U Bolometric Interferometer for Cosmology) is an international ground-based experiment dedicated in the measurement of the polarized fluctuations of the Cosmic Microwave Background (CMB). It is based on bolometric interferometry, an original detection technique which combine the immunity to systematic effects of an interferometer with the sensitivity of low temperature incoherent detectors. QUBIC will be deployed in Argentina, at the Alto Chorrillos mountain site near San Antonio de los Cobres, in the Salta province. The QUBIC detection chain consists in 2048 NbSi Transition Edge Sensors (TESs) cooled to 350mK.The voltage-biased TESs are read out with Time Domain Multiplexing based on Superconducting QUantum Interference Devices (SQUIDs) at 1 K and a novel SiGe Application-Specific Integrated Circuit (ASIC) at 60 K allowing to reach an unprecedented multiplexing (MUX) factor equal to 128. The QUBIC experiment is currently being characterized in the lab with a reduced number of detectors before upgrading to the full instrument. I will present the last results of this characterization phase with a focus on the detectors and readout system., Conference proceedings submitted to the Journal of Low Temperature Physics for LTD18
Published: 2019
Full Text: View/download PDF

26. Development of a sorption-cooled continuous miniature dilution refrigerator for 100 mK detector testing

Author: Gabriele Coppi, Andrew May, Simon J. Melhuish, S. Azzoni, Lucio Piccirillo, D. Banys, J. Wenninger, Mark McCulloch, Victor Haynes, May, A, Azzoni, S, Banys, D, Coppi, G, Haynes, V, Mcculloch, M, Melhuish, S, Piccirillo, L, and Wenninger, J
Subjects: Cryostat, Materials science, Nuclear engineering, Detector, Condensation, Sorption, Cryogenics, Large format, cryogenics, dilution refrigerator, Materials Science(all), Heat exchanger, Dilution refrigerator, Engineering(all)
Abstract: As the forthcoming generation of Cosmic Microwave Background observatories move towards the use of large format detector arrays operating at ∼100 mK, the need for test cryostats capable of operating in this temperature regime is becoming more pronounced. This has strongly driven the development of several related systems, including the continuous miniature dilution refrigerator (MDR) reported here. The MDR is comprised of a thermally separated mixing chamber, step heat exchangers, twin stills and twin condensation pumps. The pumps are alternately cooled to ∼300 mK by a pair of single-shot 1He sorption coolers (cycled in anti-phase) to circulate 3He in the system. The system is therefore closed-cycle, with the circulation of 3He, both in the MDR and sorption coolers, contained to the cold stage. As a result, the reliability of the system is improved through a mechanically simple design and the absence of external connections, gas handling systems, and cold o-rings.
Published: 2019

27. Atmospheric nitrogen depositions in a highly human impacted area

Author: S. Stevenazzi, M. Masetti, C. Camera, M. Tiepolo, E. S. Ferrari, R. S. Azzoni, Stevenazzi, S., Masetti, M., Camera, C., Tiepolo, M., Ferrari, E. S., and Azzoni, R. S.
Published: 2019

28. Comparison of bacterial communities of cryoconite holes of different glaciers in the Stelvio National Park

Author: F. Pittino, R. Ambrosini, R. S. Azzoni, G. Diolaiuti, A. Franzetti, Pittino, F, Ambrosini, R, Azzoni, R, Diolaiuti, G, and Franzetti, A
Subjects: cryoconite, bacterial communities, supraglacial sediment, alpine glaciers
Published: 2019

29. A mathematical formula to allow comparison of biochemical data from different laboratories for hepatological research

Author: S. Azzoni, M.S. Bassoni, N. Carulli, P. Loria, and Marco Bertolotti
Subjects: Hepatology, Applied mathematics, Mathematical formula, Mathematics
Published: 1998

30. Development of a sorption-cooled continuous miniature dilution refrigerator for 100 mK detector testing.

Author: AJ May, S Azzoni, D Banys, G Coppi, V Haynes, MA McCulloch, SJ Melhuish, L Piccirillo, and J Wenninger
Published: 2019
Full Text: View/download PDF

31. A GIS – minimal glacier model on the Rutor glaciers (western Italian Alps)

Author: MORETTI, MASSIMILIANO, MATTAVELLI, MATTEO, STRIGARO, DANIELE, FRIGERIO, IVAN, MAGGI, VALTER, DE AMICIS, MATTIA GIOVANNI MARIA, Provenzale, A., Roberto S. Azzoni, Claudio Smiraglia, Antonella Senese and Guglielmina Diolaiuti, Moretti, M, Mattavelli, M, Strigaro, D, Frigerio, I, Maggi, V, DE AMICIS, M, and Provenzale, A
Subjects: GIS, Rutor, Minimal Glacier Model, Webgis
Published: 2015

32. Effects of polar substituents on the biological activity of thiosemicarbazone metal complexes.

Author: Bisceglie F, Tavone M, Mussi F, Azzoni S, Montalbano S, Franzoni S, Tarasconi P, Buschini A, and Pelosi G
Subjects: Antineoplastic Agents chemical synthesis, Antineoplastic Agents chemistry, Cell Line, Tumor, Coordination Complexes chemical synthesis, Coordination Complexes chemistry, Copper chemistry, Humans, Ligands, Molecular Structure, Nickel chemistry, Thiosemicarbazones chemical synthesis, Thiosemicarbazones chemistry, Antineoplastic Agents pharmacology, Coordination Complexes pharmacology, Thiosemicarbazones pharmacology
Abstract: In this paper, citronellal, vanillin and pyridoxal thiosemicarbazones were modified with polar substituents, namely ethylmorpholine and glucose, to increase their polarity and compare the effects of these moieties on their biological activity. Altogether, nine ligands were synthesized and for each of them also their copper(II) and nickel(II) complexes were prepared and used for the biological tests. Eventually, assays on proliferation inhibition were conducted using leukemic cell line U937, already used as a model for previous citronellal thiosemicarbazone tests. Biological tests were also performed on solid tumor cell line HT29. From the first screenings, two of the metal complexes showed remarkable interesting properties, and, therefore, were also tested for histosensitivity., (Copyright © 2017 Elsevier Inc. All rights reserved.)
Published: 2018
Full Text: View/download PDF

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32 results on '"S. Azzoni"'

1. Geographical variability of bacterial communities of cryoconite holes of Andean glaciers

2. Tensor-to-scalar ratio forecasts for extended LiteBIRD frequency configurations

3. Glacier shrinkage in the Alps continues unabated as revealed by a new glacier inventory from Sentinel-2

4. Cryoconite: an efficient accumulator of radioactive fallout in glacial environments

5. MONITORING ALPINE GLACIERS FROM CLOSE-RANGE TO SATELLITE SENSORS

6. Estimating the snow water equivalent on a glacierized high elevation site (Forni Glacier, Italy)

7. Combination of UAV and terrestrial photogrammetry to assess rapid glacier evolution and map glacier hazards

8. Functional and Taxonomic Diversity of Anaerobes in Supraglacial Microbial Communities

9. Estimating ice albedo from fine debris cover quantified by a semi-automatic method: the case study of Forni Glacier, Italian Alps

10. QUBIC VII: The feedhorn-switch system of the technological demonstrator

11. Optical Characterization of OMT-Coupled TES Bolometers for LiteBIRD

12. QUBIC Experiment Toward the First Light

13. Post-Depositional Biodegradation Processes of Pollutants on Glacier Surfaces

14. The QUBIC instrument for CMB polarization measurements

15. Calibration of QUBIC: The Q and U bolometric interferometer for cosmology (Erratum)

16. Detection chain and electronic readout of the QUBIC instrument

17. A minimal power-spectrum-based moment expansion for CMB B-mode searches

18. TES Bolometer Arrays for the QUBIC B-Mode CMB Experiment

19. A Closed-Cycle Miniature Dilution Refrigerator for a Fast-Cooldown 100 mK Detector Wafer Test Cryostat

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

21. The Simons Observatory: gain, bandpass and polarization-angle calibration requirements for B-mode searches

22. Supplementary material to 'Cryoconite as an efficient monitor for the deposition of radioactive fallout in glacial environments'

23. QUBIC: the Q \& U Bolometric Interferometer for Cosmology

24. Atmospheric nitrogen deposition in a highly human impacted area in northern Italy

25. QUBIC: using NbSi TESs with a bolometric interferometer to characterize the polarisation of the CMB

26. Development of a sorption-cooled continuous miniature dilution refrigerator for 100 mK detector testing

27. Atmospheric nitrogen depositions in a highly human impacted area

28. Comparison of bacterial communities of cryoconite holes of different glaciers in the Stelvio National Park

29. A mathematical formula to allow comparison of biochemical data from different laboratories for hepatological research

30. Development of a sorption-cooled continuous miniature dilution refrigerator for 100 mK detector testing.

31. A GIS – minimal glacier model on the Rutor glaciers (western Italian Alps)

32. Effects of polar substituents on the biological activity of thiosemicarbazone metal complexes.

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32 results on '"S. Azzoni"'

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