Abstract
Superconductor–insulator–normal metal–insulator–superconductor (SINIS) detectors are developed with promising applications in two scheduled instruments of the space project of the Millimetron radio telescope, as well as ground-based high-altitude BTA (Big Telescope Alt-Azimuthal) and Suffa telescopes. For the multipixel imaging array, two matrix versions are developed: half-wave and electrically small antennas with series and parallel connection of elements in each pixel. In the former case, readout is performed using field-effect transistors; in the latter case, readout is performed using superconducting quantum interferometers (SQUIDs). For multipixel applications, a structure with frequency multiplexing of channels, in which each pixel represents a coplanar resonator connected to a common coplanar line and read using a cryogenic microwave amplifier is developed and fabricated for the first time. As such an amplifier, a prototype of the Josephson traveling-wave parametric amplifier (JTWPA) based on aluminum SIS junctions is developed and fabricated for the first time. Such a design provides fast readout of hundreds of channels over one coaxial line, noise removal with spectrum 1/f in the readout channel due to an increase in the readout frequency to several gigahertz, as well as reduction of the heat load on a sorption refrigerator due to a decrease in the number of lead wires from several hundred to one coaxial cable.
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Funding
This study was supported by the Russian Foundation for Basic Research–BRICS, project no. 19-52-80023, and within the State contract of the Kotelnikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow, project no. ААА-А19-119041990058-5.
The development and fabrication of experimental setup elements were supported by the Russian Science Foundation, project no. 19-19-00499, and within the State contract of the Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod. The experimental study of samples was supported within the State contract of the Kapitza Institute for Physical Problems, Russian Academy of Sciences, Moscow, and the Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz.
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Translated by A. Kazantsev
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Tarasov, M.A., Gunbina, A.A., Lemzyakov, S.A. et al. Matrices of SINIS Detectors for Terahertz Radioastronomy. Bull. Lebedev Phys. Inst. 48, 262–267 (2021). https://doi.org/10.3103/S1068335621090086
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DOI: https://doi.org/10.3103/S1068335621090086