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Hsiao, F. Z., Lin, M. C., Wang, C., Lee, D. S., Chen, J. R., Hilbert, B., et al. (2001). The liquid helium cryogenic system for the superconducting cavity in SRRC. In Proc. Particle Accelerator Conference (Vol. 2, pp. 1604–1606).
Abstract: A 500 MHz superconducting cavity will replace the current copper cavity and begin to operate in the beginning of the year 2003. A liquid helium cryogenic system provides the cavity at 4.5 K a cooling capacity of 255 W without LN2 pre-cooling and a liquefaction rate of 110 liter/hour with LN2 pre-cooling. A safety factor of 1.5 is used to estimate the heat load from the superconducting cavity and the heat loss from the transfer lines. With the LN2 pre-cooling, this cooling system provides a cooling capacity of up to 450 W to cool down the additional superconducting Landau cavity. The capacity of the system can be tuned using a frequency driver installed at the compressor station. The pressure fluctuations of the dewar and of the suction line are kept to the same stability requirement that of the cavity cryostat to minimize the influence in cavity operation. A shutdown period for maintenance of more than 8000 hours for the cryogenic system is expected without interfering with the continuous operation of the superconducting cavity.
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Fedorov, G. E., Stepanova, T. S., Gazaliev, A. S., Gaiduchenko, I. A., Kaurova, N. S., Voronov, B. M., et al. (2016). Asymmetric devices based on carbon nanotubes for terahertz-range radiation detection. Semicond., 50(12), 1600–1603.
Abstract: Various asymmetric detecting devices based on carbon nanotubes (CNTs) are studied. The asymmetry is understood as inhomogeneous properties along the conducting channel. In the first type of devices, an inhomogeneous morphology of the CNT grid is used. In the second type of devices, metals with highly varying work functions are used as the contact material. The relation between the sensitivity and detector configuration is analyzed. Based on the data obtained, approaches to the development of an efficient detector of terahertz radiation, based on carbon nanotubes are proposed.
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Gershenzon, E. M., Gol'tsman, G. N., Gogidze, I. G., Gusev, Y. P., Elantiev, A. I., Karasik, B. S., et al. (1990). Millimeter and submillimeter wave range mixer based on electronic heating of superconducting films in the resistive state. Sov. Supercond., 3(10), 1582–1597.
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Tong, C. Y. E., Blundell, R., Paine, S., Papa, D. C., Kawamura, J., Stern, J., et al. (1996). Design and characterization of a 250-350 GHz fixed-tuned superconductor-insulator-insulator receiver. IEEE Trans. Microw. Theory Techn., 44(9), 1548–1556.
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Shein, K. V., Zarudneva, A. A., Emel’yanova, V. O., Logunova, M. A., Chichkov, V. I., Sobolev, A. S., et al. (2020). Superconducting microstructures with high impedance. Phys. Solid State, 62(9), 1539–1542.
Abstract: The transport properties of two types of quasi-one-dimensional superconducting microstructures were investigated at ultra-low temperatures: the narrow channels close-packed in the shape of meander, and the chains of tunneling contacts “superconductor-insulator-superconductor.” Both types of the microstructures demonstrated high value of high-frequency impedance and-or the dynamic resistance. The study opens up potential for using of such structures as current stabilizing elements with zero dissipation.
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