Operation of a high-T-C SQUID gradiometer with a two-stage MEMS-based Joule-Thomson micro-cooler
Journal article, 2016
Practical applications of high-T-C superconducting quantum interference devices (SQUIDs) require cheap, simple in operation, and cryogen-free cooling. Mechanical cryo-coolers are generally not suitable for operation with SQUIDs due to their inherent magnetic and vibrational noise. In this work, we utilized a commercial Joule-Thomson microfluidic two-stage cooling system with base temperature of 75 K. We achieved successful operation of a bicrystal high-T-C SQUID gradiometer in shielded magnetic environment. The micro-cooler head contains neither moving nor magnetic parts, and thus does not affect magnetic flux noise of the SQUID even at low frequencies. Our results demonstrate that such a microfluidic cooling system is a promising technology for cooling of high-T-C SQUIDs in practical applications such as magnetic bioassays.
high-T-C planar SQUID gradiometers
applied physics letters
micro-coolers
noise
v64
1994
Physics
sensor
klich ah
cryocooler
system
superconducting quantum interference device
p3494
Author
Alexei Kalaboukhov
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
E. J. de Hoon
Kryoz Technologies B.V.
K. Kuit
Kryoz Technologies B.V.
Ppppm Lerou
Kryoz Technologies B.V.
Maxim Chukharkin Leonidovich
Chalmers University of Technology
Justin Schneiderman
Goteborgs Universitet
Sobhan Sepehri
Chalmers University of Technology
Anke Sanz-Velasco
IMT Masken und Teilungen AG
Aldo Jesorka
Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry
Dag Winkler
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Superconductor Science and Technology
0953-2048 (ISSN) 1361-6668 (eISSN)
Vol. 29 9Areas of Advance
Nanoscience and Nanotechnology
Subject Categories (SSIF 2011)
Electrical Engineering, Electronic Engineering, Information Engineering
Nano Technology
DOI
10.1088/0953-2048/29/9/095014