An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Compact 1.7 K Cryocooler for Superconducting Nanowire Single-Photon Detectors
Published
Author(s)
Vincent Y. Kotsubo, Joel N. Ullom, Sae Woo Nam
Abstract
State-of-the-art superconductor-based cryogenic detector systems are being installed at numerous research facilities worldwide and are achieving world-record sensitivities in a variety of applications. Implementation has been greatly facilitated by closed-cycle refrigeration. However, in many cases, cooling capacities of the refrigerators exceed requirements, at times by orders of magnitude, resulting in excessively large and cumbersome systems. The availability of more compact and lower power consumption systems should greatly facilitate further user acceptance. Toward this end, we are developing a compact 1.7 K closed-cycle pulse tube/Joule-Thomson hybrid cryocooler for superconducting nanowire single-photon detectors. A laboratory prototype consisting of the pulse tube cooler and the Joule-Thomson coldhead has demonstrated over 1.4 mW of cooling at 1.7 K. The Joule-Thomson compressor is under development and remains the single largest risk item in terms of reliability. The system, designed for low manufacturing costs, is projected to consume on the order of 250 W total power, including power for cooling fans, thermometry, and detector electronics, and to be mountable within a standard equipment rack.
Kotsubo, V.
, Ullom, J.
and Nam, S.
(2020),
Compact 1.7 K Cryocooler for Superconducting Nanowire Single-Photon Detectors, Cryocoolers 20, Burlington, VT, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=926073
(Accessed December 22, 2024)