CONCERTO at APEX: installation and technical commissioning

Abstract

We describe the deployment and first tests on Sky of CONCERTO, a large field-of-view (18.6arc-min) spectral-imaging instrument. The instrument operates in the range 130-310GHz from the APEX 12-meters telescope located at 5100m a.s.l. on the Chajnantor plateau. Spectra with R=1-300 are obtained using a fast (2.5Hz mechanical frequency) Fourier Transform Spectrometer (FTS), coupled to a continuous dilution cryostat with a base temperature of 60mK. Two 2152-pixels arrays of Lumped Element Kinetic Inductance Detectors (LEKID) are installed in the cryostat that also contains the cold optics and the front-end electronics. CONCERTO, installed in April 2021, generates more than 20k spectra per second during observations. We describe the final development phases, the installation and the first results obtained on Sky.

Submitted to JLTP, Proceedings if the Low Temperature Detectors 19 conference, NIST, 2021

References in corpus (4)

• The Large APEX Bolometer Camera LABOCA
• The NIKA2 large field-of-view millimeter continuum camera for the 30-m IRAM telescope
• A wide field-of-view low-resolution spectrometer at APEX: instrument design and science forecast
• The KISS experiment

Cited by in corpus (7)

• CONCERTO: Readout and control electronics
• DESHIMA 2.0: Rapid redshift surveys and multi-line spectroscopy of dusty galaxies
• CONCERTO at APEX -- On-sky performance in continuum
• Continuum, CO and Water vapour maps of the Orion Nebula. First millimetre spectral imaging with Concerto
• The informativeness of [C II] line-intensity mapping as a probe of the H I content and metallicity of galaxies at the end of reionization
• CONCERTO: instrument and status
• CONCERTO: Characterization of analog readout electronics