학술논문
Superconducting Receivers for Space, Balloon, and Ground-Based Sub-Terahertz Radio Telescopes
Document Type
Original Paper
Author
Balega, Yu. Yu.; Baryshev, A. M.; Bubnov, G. M.; Vdovin, V. F.; Vdovichev, S. N.; Gunbina, A. A.; Dmitriev, P. N.; Dubrovich, V. K.; Zinchenko, I. I.; Koshelets, V. P.; Lemzyakov, S. A.; Nagirnaya, D. V.; Rudakov, K. I.; Smirnov, A. V.; Tarasov, M. A.; Filippenko, L. V.; Haikin, V. B.; Khudchenko, A. V.; Chekushkin, A. M.; Edelman, V. S.; Yusupov, R. A.; Yakopov, G. V.
Source
Radiophysics and Quantum Electronics. 63(7):479-500
Subject
Language
English
ISSN
0033-8443
1573-9120
1573-9120
Abstract
We give a review of both our own original scientific results of the development of superconducting receivers for sub-terahertz astronomy and the main leading concepts of the global instrumentation. The analysis of current astronomical problems, the results of microwave astroclimate research, and the development of equipment for sub-terahertz radio astronomy studies justify the need and feasibility of a major infrastructure project in Russia to create a sub-terahertz telescope, as well as to enhance the implementation of the ongoing Millimetron and Suffa projects. The following results are discussed: i) superconducting coherent receivers and broadband subterahertz detectors for space, balloon, and ground-based radio telescopes have been developed and tested; ii) ultrasensitive receiving systems based on tunnel structures such as superconductor—insulator—superconductor (SIS) and superconductor—insulator—normal metal—insulator—superconductor (SINIS) have been created, fabricated, and examined; iii) a receiving array based on SINIS detectors and microwave readout system for such structures has been implemented; iv) methods for manufacturing high-quality tunnel structures Nb/AlOx /Nb and Nb/AlN/NbN based on niobium films with a current density of up to 30 kA/cm2 have been developed. Receivers operated at 200 to 950 GHz and having a noise temperature only a factor of 2 to 5 higher than the quantum limit have been created and tested.