@article{b9b9aec1da114c78816bb72a13aebec2,
title = "An active convective 4He heat switch",
abstract = "The design and experimental demonstration are reported of an active convective heat switch suitable for use at cryogenic temperatures. The switch is mechanically simple, relatively inexpensive, and requires no moving parts, instead being operated entirely using heaters. The working gas used is 4He in a closed cycle and, as such, the switch requires no external gas connections. Closed conductances on the order of 50 mW/K have been demonstrated with residual open conductances on the order of 0.4 mW/K. Novel modelling is presented which shows excellent agreement with the experimental data and significant improvement over existing models.",
keywords = "He, Active switch, Convection, Heat switch, Thermal switch",
author = "May, {Andrew J.} and Susanna Azzoni and Simon Melhuish and Lucio Piccirillo and Daniel Seal and Thomas Sweetnam and Joseph Winnicki",
note = "Funding Information: The authors would like to thank the staff in the School of Physics and Astronomy Machine Shop at the University of Manchester for their exceptionally skilled machining of many of the parts described in this paper. This work was supported by Science and Technology Facilities Council grant ST/L000768/1. The authors would also like to thank Prof. H.J.M. ter Brake for helpful discussions on the various flow models described herein. Funding Information: This work was supported by Science and Technology Facilities Council grant ST/L000768/1. Publisher Copyright: {\textcopyright} 2022 The Author(s)",
year = "2022",
month = dec,
day = "1",
doi = "10.1016/j.cryogenics.2022.103585",
language = "English",
volume = "128",
journal = "Cryogenics",
issn = "0011-2275",
publisher = "Elsevier BV",
}