The MISTRAL Instrument and the Characterization of Its Detector Array

Abstract The MIllimeter Sardinia radio Telescope Receiver based on Array of Lumped elements KIDs, MISTRAL, is a cryogenic LEKID camera, operating in the W band ( $${77}{-}{103\,\textrm{GHz}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>77</mml:mn> <mml:mo>-</mml:mo> <mml:mrow> <mml:mn>103</mml:mn> <mml:mspace/> <mml:mtext>GHz</mml:mtext> </mml:mrow> </mml:mrow> </mml:math> ) from the Gregorian focus of the 64-m aperture Sardinia Radio Telescope (SRT), in Italy. This instrument features a high angular resolution ( $$\sim {12\,\textrm{arcsec}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>∼</mml:mo> <mml:mrow> <mml:mn>12</mml:mn> <mml:mspace/> <mml:mtext>arcsec</mml:mtext> </mml:mrow> </mml:mrow> </mml:math> ) and a wide instantaneous field of view ( $$\sim {4\,\textrm{arcmin}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>∼</mml:mo> <mml:mrow> <mml:mn>4</mml:mn> <mml:mspace/> <mml:mtext>arcmin</mml:mtext> </mml:mrow> </mml:mrow> </mml:math> ), allowing continuum surveys of the mm-wave sky with many scientific targets, including observations of galaxy clusters via the Sunyaev–Zel’dovich effect. In May 2023, MISTRAL has been installed at SRT for the technical commissioning. In this contribution, we will describe the MISTRAL instrument focusing on the laboratory characterization of its focal plane: a $$\sim {400}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>∼</mml:mo> <mml:mn>400</mml:mn> </mml:mrow> </mml:math> -pixel LEKID array. We will show the optical performance of the detectors highlighting the procedure for the identification of the pixels on the focal plane, the measurements of the optical responsivity and NEP, and the estimation of the optical efficiency.

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Publication Details

Journal
Journal of Low Temperature Physics
Published
2024-09-16
DOI
https://doi.org/10.1007/s10909-024-03210-1
Citations
10
Primary Topic
Superconducting and THz Device Technology
Type
article
Field-Weighted Citation Impact
3.32
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article

The MISTRAL Instrument and the Characterization of Its Detector Array

Alessandro Carbone, E. S. Battistelli, A. Navarrini, Valentina Capalbo et al.
10 citations
Journal of Low Temperature Physics
Superconducting and THz Device Technology
3.32
article

The MISTRAL Instrument and the Characterization of Its Detector Array

Alessandro Carbone, E. S. Battistelli, A. Navarrini, Valentina Capalbo, A. Paiella, Eleonora Barbavara, I. Porceddu, Tonino Pisanu, A. Novelli, A. Occhiuzzi, F. Piacentini, E. Carretti, Giovanni Isopi, P. Marongiu, S. Masi, G. D’Alessandro, A. Orlati, M. De Petris, S. Poppi, M. R. Schirru, F. Govoni, A. Cruciani, F. Columbro, E. Molinari, Giorgio Pettinari, Gian Paolo Vargiu, P. de Bernardis, F. Cacciotti, Elisa Pappalardo, M. Murgia, A. Coppolecchia, E. Levati, A. Mascia, A. Ritacco, E. Ciccalotti, L. Lamagna
article en
10 citations

Abstract

Abstract The MIllimeter Sardinia radio Telescope Receiver based on Array of Lumped elements KIDs, MISTRAL, is a cryogenic LEKID camera, operating in the W band ( $${77}{-}{103\,\textrm{GHz}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>77</mml:mn> <mml:mo>-</mml:mo> <mml:mrow> <mml:mn>103</mml:mn> <mml:mspace/> <mml:mtext>GHz</mml:mtext> </mml:mrow> </mml:mrow> </mml:math> ) from the Gregorian focus of the 64-m aperture Sardinia Radio Telescope (SRT), in Italy. This instrument features a high angular resolution ( $$\sim {12\,\textrm{arcsec}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>∼</mml:mo> <mml:mrow> <mml:mn>12</mml:mn> <mml:mspace/> <mml:mtext>arcsec</mml:mtext> </mml:mrow> </mml:mrow> </mml:math> ) and a wide instantaneous field of view ( $$\sim {4\,\textrm{arcmin}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>∼</mml:mo> <mml:mrow> <mml:mn>4</mml:mn> <mml:mspace/> <mml:mtext>arcmin</mml:mtext> </mml:mrow> </mml:mrow> </mml:math> ), allowing continuum surveys of the mm-wave sky with many scientific targets, including observations of galaxy clusters via the Sunyaev–Zel’dovich effect. In May 2023, MISTRAL has been installed at SRT for the technical commissioning. In this contribution, we will describe the MISTRAL instrument focusing on the laboratory characterization of its focal plane: a $$\sim {400}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>∼</mml:mo> <mml:mn>400</mml:mn> </mml:mrow> </mml:math> -pixel LEKID array. We will show the optical performance of the detectors highlighting the procedure for the identification of the pixels on the focal plane, the measurements of the optical responsivity and NEP, and the estimation of the optical efficiency.

Journal of Low Temperature PhysicsVol. 217(3-4)
University of Rome Tor Vergata (IT), Istituto Nazionale di Fisica Nucleare (IT), Brera Astronomical Observatory (IT), Istituto di Radioastronomia di Bologna (IT), Istituto di Fotonica e Nanotecnologie (IT), Osservatorio Astronomico di Cagliari (IT), Sapienza University of Rome (IT), National Institute for Astrophysics (IT)
Openalex Percentile: Top 8%
Superconducting and THz Device Technology
3.32
DOIOpen Access PDFOpenAlex
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