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تسجيل مستخدم جديدKinetic inductance detectors for millimeter and submillimeter astronomy / Detecteurs `a inductance cinetique pour lastronomie millimetrique et sub-millimetrique
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We present recent developments in Kinetic Inductance Detectors (KID) for large arrays of detectors. The main application is ground-based millimeter wave astronomy. We focus in particular, as a case study, on our own experiment: NIKA (Neel IRAM KID Arrays). NIKA is today the best in-the-field experiment using KID-based instruments, and consists of a dual-band imaging system designed for the IRAM 30 meter telescope at Pico Veleta. We describe in this article, after a general context introduction, the KID working principle and the readout electronics, crucial to take advantage of the intrinsic KID multiplexability. We conclude with a small subset of the astronomical sources observed simultaneously at 2 mm and 1.4 mm by NIKA during the last run, held in October 2010. Nous decrivons les recents developpements concernant les grandes matrices de detecteurs `a inductance cinetique (KID) dont lapplication principale est lastronomie millimetrique au sol. Nous detaillons en particulier notre propre camera : NIKA (Neel IRAM KID Arrays) qui est aujourdhui linstrument le plus abouti mettant en oeuvre des KIDs. NIKA est une camera bi-bande conc{c}ue pour le radiotelescope de 30 m`etres de lIRAM `a Pico Veleta. Apres avoir decrit le contexte instrumental dans lequel ils sinscrivent, nous expliquerons le principe de fonctionnement des KIDs et de leur electronique de lecture, cruciale pour pouvoir tirer parti de leur potentiel de muliplexage. Pour finir, nous presentons quelques exemples dobservations effectuees par NIKA dans les bandes de 2 mm et 1,4 mm au cours de la derni`ere campagne dobservation en octobre 2010.
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In Kinetic Inductance Detectors (KIDs) and other similar applications of superconducting microresonators, both the large and small-signal behaviour of the device may be affected by electrothermal feedback. Microwave power applied to read out the devi
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A substantial amount of important scientific information is contained within astronomical data at the submillimeter and far-infrared (FIR) wavelengths, including information regarding dusty galaxies, galaxy clusters, and star-forming regions; however
, these wavelengths are among the least-explored fields in astronomy because of the technological difficulties involved in such research. Over the past 20 years, considerable efforts have been devoted to developing submillimeter- and millimeter-wavelength astronomical instruments and telescopes. The number of detectors is an important property of such instruments and is the subject of the current study. Future telescopes will require as many as hundreds of thousands of detectors to meet the necessary requirements in terms of the field of view, scan speed, and resolution. A large pixel count is one benefit of the development of multiplexable detectors that use kinetic inductance detector (KID) technology. This paper presents the development of all aspects of the readout electronics for a KID-based instrument, which enabled one of the largest detector counts achieved to date in submillimeter-/millimeter-wavelength imaging arrays: a total of 2304 detectors. The work presented in this paper had been implemented in the MUltiwavelength Submillimeter Inductance Camera (MUSIC), a instrument for the Caltech Submillimeter Observatory (CSO) between 2013 and 2015.
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