Superconducting millimetre-wave cameras

Alessandro Monfardini

doi:10.1016/j.crhy.2017.05.002

Prix Gustave-Ribaud de l'Académie des sciences 2016

Superconducting millimetre-wave cameras
[Caméras supraconductrices millimétriques pour l'astronomie]

Alessandro Monfardini ¹

¹ Institut Néel, CNRS and Université Grenoble Alpes, 25, rue des Martyrs, 38042 Grenoble cedex 9, France

Comptes Rendus. Physique, Volume 18 (2017) no. 5-6, pp. 323-330.

Résumé
Abstract

J'expose les récents développements concernant les détecteurs à inductance cinétique (KID) appliqués à l'imagerie-polarimétrie millimétrique et THz. Ces développements s'inscrivent dans une collaboration grenobloise. J'insiste en particulier sur la description de notre caméra NIKA2 (Néel IRAM KID Arrays 2), qui est aujourd'hui la plus grande caméra millimétrique disponible pour des observations ouvertes à l'ensemble des astronomes. NIKA2 est un instrument double bande capable de séparer la polarisation du rayonnement incident. Il est installé sur le radiotélescope de 30 mètres de l'Iram (Institut de radio astronomie millimétrique) au Pico Veleta (Espagne). Après avoir décrit le contexte physique et instrumental dans lequel se situent ces études, je présente quelques exemples d'observations effectuées par NIKA2, et son prédécesseur NIKA.

I present a review of the developments in kinetic inductance detectors (KID) for mm-wave and THz imaging-polarimetry in the framework of the Grenoble collaboration. The main application that we have targeted so far is large field-of-view astronomy. I focus in particular on our own experiment: NIKA2 (Néel IRAM KID Arrays). NIKA2 is today the largest millimetre camera available to the astronomical community for general purpose observations. It consists of a dual-band, dual-polarisation, multi-thousands pixels system installed at the IRAM 30-m telescope at Pico Veleta (Spain). I start with a general introduction covering the underlying physics and the KID working principle. Then I describe briefly the instrument and the detectors, to conclude with examples of pictures taken on the Sky by NIKA2 and its predecessor, NIKA. Thanks to these results, together with the relative simplicity and low cost of the KID fabrication, industrial applications requiring passive millimetre-THz imaging have now become possible.

Publié le : 2017-05-01

DOI : 10.1016/j.crhy.2017.05.002

Keywords: Millimetre astronomy, Superconducting detectors, Kinetic inductance, Multiplexed electronics
Mot clés : Astronomie millimétrique, Détecteurs supraconducteurs, Inductance cinétique, Électronique multiplexée

Affiliations des auteurs :

Alessandro Monfardini ¹

¹ Institut Néel, CNRS and Université Grenoble Alpes, 25, rue des Martyrs, 38042 Grenoble cedex 9, France

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     title = {Superconducting millimetre-wave cameras},
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     pages = {323--330},
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Alessandro Monfardini. Superconducting millimetre-wave cameras. Comptes Rendus. Physique, Volume 18 (2017) no. 5-6, pp. 323-330. doi : 10.1016/j.crhy.2017.05.002. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2017.05.002/

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