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Compact 2.2 K Cooling System for Superconducting Nanowire Single Photon Detectors

Published

Author(s)

Vincent Y. Kotsubo, Ray Radebaugh, Sae Woo Nam, Joel N. Ullom, Brandon L. Wilson, Paul Hendershott, Micheal Bonczyski

Abstract

We are developing a compact, low power, closed cycle cooling system for Superconducting Nanowire Single Photon Detectors. The base temperature of the present prototype, which uses a helium-4 Joule-Thomson stage, is 2.2 K with over 1.2 mW of cooling. This stage is precooled to 10 K using a 3-stage linear compressor pulse tube cooler. A fully optimized system is projected to consume less than 250 W of wall power, and fit within a standard fan-cooled equipment rack enclosure. To-date, the pulse tube coldhead, pulse tube compressor, Joule-Thomson expansion stage, and Joule-Thomson counter-flow heat exchangers have been developed, and performance tests show that design goals have been met. Substituting helium-3 for helium-4 should result in temperatures approaching 1 K. Future work includes development of the Joule-Thomson compressor, drive and control electronics, and further optimization of the pulse tube and Joule-Thomson coldheads.
Proceedings Title
IEEE Transactions on Applied Superconductivity
Volume
27
Issue
4
Conference Dates
September 4-30, 2016
Conference Location
Denver, CO
Conference Title
Applied Superconductivity Conference

Keywords

Cryocoolers, Cryogenics, Joule-Thomson, Pulse Tube‎.
Created January 25, 2017, Updated January 17, 2018