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CONCERTO at APEX: Installation and first phase of on-sky commissioning

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arxiv 2110.14984 v1 pith:YKNZSRBH submitted 2021-10-28 astro-ph.IM astro-ph.COastro-ph.GA

CONCERTO at APEX: Installation and first phase of on-sky commissioning

A. Catalano , P. Ade , M. Aravena , E. Barria , A. Beelen , A. Benoit , M. B\'ethermin , J. Bounmy
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O. Bourrion G. Bres C. De Breuck M. Calvo F.-X. D\'esert C.A Dur\`an G. Duvauchelle L. Eraud A. Fasano T. Fenouillet J. Garcia G. Garde J. Goupy C. Groppi C. Hoarau W. Hu G. Lagache J.-C. Lambert J.-P. Leggeri F. Levy-Bertrand J. Mac\`ias-P\'erez H. Mani J. Marpaud M. Marton P. Mauskopf A. Monfardini G. Pisano N. Ponthieu L. Prieur G. Raffin S. Roni S. Roudier D. Tourres C. Tucker L. Vivargent
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classification astro-ph.IM astro-ph.COastro-ph.GA
keywords concertowillapexaprilcommissioningfirstfluctuationsgalaxies
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CONCERTO (CarbON CII line in post-rEionisation and ReionisaTiOn) is a large field-of-view (FoV) spectro-imager that has been installed on the Cassegrain Cabin of Atacama Pathfinder EXperiment (APEX) telescope in April 2021. CONCERTO hosts 2 focal planes and a total number of 4000 Kinetic Inductance Detectors (KID), with an instantaneous FoV of 18.6 arcminutes in the range of 130-310 GHz. The spectral resolution can be easily tuned down to 1 GHz depending on the scientific target. The scientific program of CONCERTO has many objectives, with two main programs focused on mapping the fluctuations of the [CII] line intensity in the reionisation and post-reionisation epoch (4.5<z<8.5), and on studying galaxy clusters via the thermal and kinetic Sunyaev-Zel'dovich (SZ) effect. CONCERTO will also measure the dust and molecular gas contents of local and intermediate-redshift galaxies, it will study the Galactic star-forming clouds and finally it will observe the CO intensity fluctuations arising from 0.3<z<2 galaxies. The design of the instrument, installation at APEX and current status of the commissioning phase and science verification will be presented. Also we describe the deployment and first on-sky tests performed between April and June 2021.

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