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Article Dans Une Revue Astronomy and Astrophysics - A&A Année : 2017

A kilo-pixel imaging system for future space based far-infrared observatories using microwave kinetic inductance detectors

J.J.A. Baselmans
  • Fonction : Auteur
J. Bueno
  • Fonction : Auteur
S.J.C. Yates
  • Fonction : Auteur
O. Yurduseven
  • Fonction : Auteur
N. Llombart
  • Fonction : Auteur
K. Karatsu
  • Fonction : Auteur
A.M. Baryshev
  • Fonction : Auteur
L. Ferrari
  • Fonction : Auteur
A. Endo
  • Fonction : Auteur
D.J. Thoen
  • Fonction : Auteur
P.J. de Visser
  • Fonction : Auteur
R.M.J. Janssen
  • Fonction : Auteur
V. Murugesan
  • Fonction : Auteur
J. Martin-Pintado
  • Fonction : Auteur
P. Hargrave
  • Fonction : Auteur
M. Griffin
  • Fonction : Auteur

Résumé

Aims. Future astrophysics and cosmic microwave background space missions operating in the far-infrared to millimetre part of the spectrum will require very large arrays of ultra-sensitive detectors in combination with high multiplexing factors and efficient low-noise and low-power readout systems. We have developed a demonstrator system suitable for such applications.Methods. The system combines a 961 pixel imaging array based upon Microwave Kinetic Inductance Detectors (MKIDs) with a readout system capable of reading out all pixels simultaneously with only one readout cable pair and a single cryogenic amplifier. We evaluate, in a representative environment, the system performance in terms of sensitivity, dynamic range, optical efficiency, cosmic ray rejection, pixel-pixel crosstalk and overall yield at an observation centre frequency of 850 GHz and 20% fractional bandwidth.Results. The overall system has an excellent sensitivity, with an average detector sensitivity measured using a thermal calibration source. At a loading power per pixel of 50 fW we demonstrate white, photon noise limited detector noise down to 300 mHz. The dynamic range would allow the detection of ~1 Jy bright sources within the field of view without tuning the readout of the detectors. The expected dead time due to cosmic ray interactions, when operated in an L2 or a similar far-Earth orbit, is found to be <4%. Additionally, the achieved pixel yield is 83% and the crosstalk between the pixels is <−30 dB.Conclusions. This demonstrates that MKID technology can provide multiplexing ratios on the order of a 1000 with state-of-the-art single pixel performance, and that the technology is now mature enough to be considered for future space based observatories and experiments.Key words: instrumentation: detectors / techniques: miscellaneous

Dates et versions

hal-01582373 , version 1 (06-09-2017)

Identifiants

Citer

J.J.A. Baselmans, J. Bueno, S.J.C. Yates, O. Yurduseven, N. Llombart, et al.. A kilo-pixel imaging system for future space based far-infrared observatories using microwave kinetic inductance detectors. Astronomy and Astrophysics - A&A, 2017, 601, pp.A89. ⟨10.1051/0004-6361/201629653⟩. ⟨hal-01582373⟩

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