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312 results on '"Chaumont C"'

1. Design of Near Infrared and Visible Kinetic Inductance Detectors Using MIM Capacitors

Author

Beldi, S., Boussaha, F., Chaumont, C., Mignot, S., Reix, F., Tartari, A., Vacelet, T., Traini, A., Piat, M., and Bonifacio, P.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Applied Physics, Physics - Instrumentation and Detectors
Abstract

We are developing superconducting Microwave Kinetic Inductance Detectors to operate at near infrared and optical wavelengths for astronomy. In order to efficiently meet with the requirements of astronomical applications, we propose to replace the interdigitated capacitor by a metal, insulator, metal capacitor which has the advantage of presenting a larger capacitance value within a much smaller space. The pixel will occupy a space of typically 100 micrometers by 85 micrometers which is nine times less than a typical pixel size using the interdigitated capacitor operating at the same frequency, below 2 GHz.

Published
2019

16. Design of an on-chip integrated 230 GHz dual-polarization balanced SIS receiver for multi-pixel array applications

Author

Wenninger, J, Chaumont, C, Boussaha, F, and Tan, B-K

Abstract

We report the design of a 230 GHz dual-polarization (2-pol) balanced Superconductor-Insulator-Superconductor (SIS) receiver that can be easily extended for large array applications. We achieve this by integrating all of the required radio frequency (RF) and local oscillator (LO) components on-chip using planar superconducting circuit technology, therefore simplifying the architecture of the receiver block substantially. One major feature of our design is the planar LO injection scheme, which couples the LO with a single on-chip antenna and distributes the LO power via a series of microstrip couplers to the balanced mixers of each polarization of each pixel. In this paper, we describe in detail the design and layout of the individual planar circuit components of our receiver, as well as how they are integrated to form a full receiver. We then conclude the paper with the design of a 2-pixel array demonstrator, illustrating how the balanced SIS mixer and the LO distribution network can be extended to form an even larger array.

Published
2022

18. PSDR4 Brie’Eau - Vers une nouvelle construction de paysage agricole et écologique sur le territoire de la Brie : associer qualité de l’eau et biodiversité. Innovations Agronomiques 86, 137-149

Author

Seguin, L., Bouarfa, S., Chaumont, C., Lebrun, J., Bontoux, C., Berthomé, B., Letournel, G., Barataud, F., Arrighi, A., Guichard, L., Bonifazzi, M., Birmant, F., Roger, L., Royer, L., Hureau, D., Farinetti, A., Pages, C., Rougier, J.E., and Tournebize, J.

Published
2022
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23. Engineering the thin film characteristics for optimal performance of superconducting kinetic inductance amplifiers using a rigorous modelling technique

Author

Tan, B-K, Boussaha, F, Chaumont, C, Longden, J, and Navarro Montilla, J

Subjects
Bardeen-Cooper-Schrieffer (BCS) Theory, Parametric Amplifier, Transmission Lines, Kinetic Inductance, Travelling Waves, Superconducting Thin Films, Quantum-Limited Noise, Articles, General Medicine, Microwave, Research Article
Abstract

Background: Kinetic Inductance Travelling Wave Parametric Amplifiers (KITWPAs) are a new variant of superconducting amplifier that can potentially achieve high gain with quantum-limited noise performance over broad bandwidth, which is important for many ultra-sensitive experiments. In this paper, we present a novel modelling technique that can better capture the electromagnetic behaviour of a KITWPA without the translation symmetry assumption, allowing us to flexibly explore the use of more complex transmission line structures and better predict their performance. Methods: In order to design a KITWPA with optimal performance, we investigate the use of different superconducting thin film materials, and compare their pros and cons in forming a high-gain low-loss medium feasible for amplification. We establish that if the film thickness can be controlled precisely, the material used has less impact on the performance of the device, as long as it is topologically defect-free and operating within its superconducting regime. With this insight, we propose the use of Titanium Nitride (TiN) film for our KITWPA as its critical temperature can be easily altered to suit our applications. We further investigate the topological effect of different commonly used superconducting transmission line structures with the TiN film, including the effect of various non-conducting materials required to form the amplifier. Results: Both of these comprehensive studies led us to two configurations of the KITWPA: 1) A low-loss 100 nm thick TiN coplanar waveguide amplifier, and 2) A compact 50 nm TiN inverted microstrip amplifier. We utilise the novel modelling technique described in the first part of the paper to explore and investigate the optimal design and operational setup required to achieve high gain with the broadest bandwidth for both KITWPAs, including the effect of loss. Conclusions: Finally, we conclude the paper with the actual layout and the predicted gain-bandwidth product of our KITWPAs.

Published
2022

24. Prognostic value of right ventricular dilatation in patients with COVID-19: A multicentre study

Author

Fauvel, C., primary, Soulat-Dufour, L., additional, Weizman, O., additional, Barbe, T., additional, Pezel, T., additional, Mika, D., additional, Cellier, J., additional, Geneste, L., additional, Panagides, V., additional, Marsou, W., additional, Deney, A., additional, Attou, S., additional, Delmotte, T., additional, Ribeyrolles, S., additional, Chemaly, P., additional, Karsenty, C., additional, Giordano, G., additional, Gautier, A., additional, Duceau, B., additional, Sutter, W., additional, Chaumont, C., additional, Guilleminot, P., additional, Sagnard, A., additional, Pastier, J., additional, Trimaille, A., additional, Bonnet, G., additional, Canu, M., additional, Coisne, A., additional, and Cohen, A., additional

Published
2021
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29. Cardiovascular Comorbidities and Covid-19 in Women

Author

Weizman, O., primary, Mika, D., additional, Geneste, L., additional, Cellier, J., additional, Trimaille, A., additional, Pommier, T., additional, Panagides, V., additional, Chaumont, C., additional, Karsenty, C., additional, Duceau, B., additional, Sutter, W., additional, Fauvel, C., additional, Pezel, T., additional, Bonnet, G., additional, Cohen, A., additional, and Waldmann, V., additional

Published
2021
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31. COVID-19 in young patients: Less cardiovascular risk factors but more specific cardiovascular complications

Author

Trimaille, A., primary, Ribeyrolles, S., additional, Fauvel, C., additional, Chaumont, C., additional, Weizman, O., additional, Pommier, T., additional, Cellier, J., additional, Panagides, V., additional, Duceau, B., additional, Sutter, W., additional, Waldmann, V., additional, Mika, D., additional, Pezel, T., additional, Cohen, A., additional, Bonnet, G., additional, and Genest, L., additional

Published
2021
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32. Composantes hydrologiques des émissions terrestres du gaz à effet de serre N2O. Composantes hydrologiques des émissions terrestres

Author

Catherine Henault, Ansard, P., Ayzac, A., Azougui, A., Billen, G., Bosc, S., Bourennane, H., Chaumont, C., L Cottenot, Cousin, I., Giot, G., Grossel, A., Hénine, H., C Lelay, Martinez, A., Mercier, B., Pasquier, C., Poinçot, F., Silvestre, M., Tallec, G., Sylvain Théry, Tournebize, J., Garnier, J., EL Mjiyad, Noureddine, Agroécologie [Dijon], Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and l’ADEME

Subjects
[SHS] Humanities and Social Sciences, [SHS]Humanities and Social Sciences
Published
2020

33. Composantes hydrologiques des émissions terrestres du gaz à effet de serre N2O. Etude réalisée pour le compte de l’ADEME dans le cadre de la convention 1660C0003

Author

Catherine Henault, P Ansard, Ayzac, A., Azougui, A., Billen, G., Bosc, S., Bourennane, H., Chaumont, C., Cottenot, L., Cousin, I., Giot, G., Agnès Grossel, Hénine, H., Le Lay, C., Martinez, A., Mercier, B., Pasquier, C., Poinçot, E., Silvestre, M., Tallec, G., Sylvain Théry, Tournebize, J., Garnier, J., Agroécologie [Dijon], Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), ADEME, and EL Mjiyad, Noureddine

Subjects
[SDE] Environmental Sciences, [SDE]Environmental Sciences
Published
2020

36. His bundle pacing procedure with limited radiation exposure

Author

Chaumont, C., primary, Auquier, N., additional, Popescu, E., additional, Milhem, A., additional, Al Arnaout, A., additional, Viart, G., additional, Mirolo, A., additional, Savoure, A., additional, Godin, B., additional, Eltchaninoff, H., additional, and Anselme, F., additional

Published
2020
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43. A 230 GHz Finline SIS receiver with wide IF bandwidth

Author

John Garrett, Boussaha, F., Chaumont, C., Tan, B. -K, and Yassin, G.

Abstract

We have developed anSIS receiver with a wide intermediate-frequency (IF) bandwidth.This is important for reducing image integration time and simultaneously measuring multiple spectral lines. The receiver is a finline mixer-based design, which allows for ultra-wide radio-frequency (RF) bandwidth and has lower mechanical requirements compared to radial stub designs. Simulations of this receiver showed quantum limited noise in the RF frequency range of 140 to 260 GHzand from DC to 10GHz in the IF spectrum.We measured the noise temperature by comparing the receiver's response to hot and cold loads. The best noise temperature was 37.9 K at 231.0 GHz, and all of the results were below 100 K from 213 to 257 GHz (the bandwidth of our local-oscillator). We measured the IF bandwidth using a spectrum analyser, and found good results from around 3-10 GHz. The lower frequency was restricted by our IF amplifier's bandwidth but the higher frequency limit was lower than we expected from simulations. We believe that this discrepancywas due to the inductance of the bondwires that we used to connect the mixer chip to the IF board. We are currently investigating techniques to reduce and compensate for this inductance.

Published
2019

46. Composantes hydrologiques des émissions terrestres du gaz à effet de serre N2O

Author

Catherine Henault, Ansard, P., Ayzac, A., Azougui, A., Billen, G., Bosc, S., Bourennane, H., Chaumont, C., L Cottenot, Cousin, I., Giot, G., Grossel, A., Hénine, H., Le Lay, C., Martinez, A., Mercier, B., Pasquier, C., Poinçot, F., Silvestre, M., Tallec, G., Sylvain Théry, Tournebize, J., Garnier, J., EL Mjiyad, Noureddine, Agroécologie [Dijon], Université de Bourgogne (UB)-Institut National de la Recherche Agronomique (INRA)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, and l’ADEME

Subjects
[SHS] Humanities and Social Sciences, [SHS]Humanities and Social Sciences
Published
2018

49. A 220 GHz finline mixer with ultra-wide instantaneous bandwidth

Author

Tan, BK, Boussaha, F, Chaumont, C, and Yassin, G

Abstract

We describe the design and fabrication of a 220 GHz superconductor-insulator-superconductor (SIS) mixer with ultrawide IF bandwidth. The mixer is fabricated on a 100 µm thick quartz substrate, with planar circuit on-chip integration. The RF power is coupled to the tunnel junction via a unilateral finline taper and a slotline-to-microstrip transition. We used a double-stub tuning network to tune out the junction’s parasitic capacitance at a broad RF bandwidth, and matched the output impedance of the mixer to the input impedance of the IF amplifier (50 Ω) from 4–18 GHz using a 6-stage IF impedance-transformer. We have fabricated these devices and have measured good DC current-voltage (IV) characteristic curves. The heterodyne mixing performance of these devices is currently being measured, and we expect to present the results in the forthcoming ISSTT conference in March.

Published
2016

50. TRAnsfert de Polluants organiques et minéraux En Zone viticole : évaluation de l’Efficacité d’un bassin de rétention à réduire la contamination des eaux de surface (projet TRAPEZE)

Author

Caner-Chabran, Anne, Marin, Béatrice, DOUSSET, Sylvie, TOURNEBIZE, Julien, Chaumont, C., Jaunat, Jessy, Ponthieu, Marie, Cancès, Benjamin, Morvan, Xavier, BANAS, Damien, Huguenot, D., Groupe d'Étude sur les Géomatériaux et Environnements Naturels, Anthropiques et Archéologiques - EA 3795 (GEGENAA), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Maison des Sciences Humaines de Champagne-Ardenne (MSH-URCA), and Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)

Subjects
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2016

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