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Development of Superfluid Helium-3 Bolometry Using Nanowire Resonators with SQUID Readout for the QUEST-DMC Experiment.

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Title: Development of Superfluid Helium-3 Bolometry Using Nanowire Resonators with SQUID Readout for the QUEST-DMC Experiment.
Authors: Leason, E.1,2 (AUTHOR) elizabeth.leason@physics.ox.ac.uk, Levitin, L. V.2 (AUTHOR), Autti, S.3 (AUTHOR), Bloomfield, E.1 (AUTHOR), Casey, A.2 (AUTHOR), Darvishi, N.2 (AUTHOR), Eng, N.2 (AUTHOR), Franchini, P.1 (AUTHOR), Haley, R. P.3 (AUTHOR), Heikkinen, P. J.2 (AUTHOR), Jennings, A.4 (AUTHOR), Kemp, A.5 (AUTHOR), March-Russell, J.1 (AUTHOR), Mayer, A.3 (AUTHOR), Monroe, J.1 (AUTHOR), Muenstermann, D.3 (AUTHOR), Noble, M. T.3 (AUTHOR), Prance, J. R.3 (AUTHOR), Rojas, X.2 (AUTHOR), Salmon, T.3 (AUTHOR)
Source: Journal of Low Temperature Physics. Apr2026, Vol. 222 Issue 2, p1-20. 20p.
Subjects: Dark matter, Superconducting quantum interference devices, Temperature measurements, Low temperature physics, Multiplexing, Resonators, Quantum fluids, Nanowire devices
Abstract: Superfluid helium-3 bolometers can be utilised for dark matter direct detection searches. The extremely low heat capacity of the B phase of the superfluid helium-3 at ultra-low temperatures offers the potential to reach world leading sensitivity to spin-dependent interactions of dark matter in the sub-GeV/c 2 mass range. Here, we describe the development of bolometry using both micron scale and sub-micron diameter vibrating wire resonators, with a SQUID amplifier-based readout scheme. Characterisation of the resonators and bolometer measurements are shown, including the use of nonlinear operation and the corresponding corrections. The bolometer contains two vibrating wire resonators, enabling heat injection calibration and simultaneous bolometer tracking measurements. Coincident events measured on both vibrating wire resonators verify their response. We also demonstrate proof of concept frequency multiplexed readout. Development of these measurement techniques lays the foundations for the use of superfluid helium-3 bolometers, instrumented with vibrating nanomechanical resonators, for future low-threshold dark matter searches. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Low Temperature Physics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Development of Superfluid Helium-3 Bolometry Using Nanowire Resonators with SQUID Readout for the QUEST-DMC Experiment.
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  Data: <searchLink fieldCode="AR" term="%22Leason%2C+E%2E%22">Leason, E.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> elizabeth.leason@physics.ox.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Levitin%2C+L%2E+V%2E%22">Levitin, L. V.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Autti%2C+S%2E%22">Autti, S.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bloomfield%2C+E%2E%22">Bloomfield, E.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Casey%2C+A%2E%22">Casey, A.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Darvishi%2C+N%2E%22">Darvishi, N.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Eng%2C+N%2E%22">Eng, N.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Franchini%2C+P%2E%22">Franchini, P.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Haley%2C+R%2E+P%2E%22">Haley, R. P.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Heikkinen%2C+P%2E+J%2E%22">Heikkinen, P. J.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jennings%2C+A%2E%22">Jennings, A.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kemp%2C+A%2E%22">Kemp, A.</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22March-Russell%2C+J%2E%22">March-Russell, J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mayer%2C+A%2E%22">Mayer, A.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Monroe%2C+J%2E%22">Monroe, J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Muenstermann%2C+D%2E%22">Muenstermann, D.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Noble%2C+M%2E+T%2E%22">Noble, M. T.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Prance%2C+J%2E+R%2E%22">Prance, J. R.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rojas%2C+X%2E%22">Rojas, X.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Salmon%2C+T%2E%22">Salmon, T.</searchLink><relatesTo>3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Low+Temperature+Physics%22">Journal of Low Temperature Physics</searchLink>. Apr2026, Vol. 222 Issue 2, p1-20. 20p.
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  Data: Superfluid helium-3 bolometers can be utilised for dark matter direct detection searches. The extremely low heat capacity of the B phase of the superfluid helium-3 at ultra-low temperatures offers the potential to reach world leading sensitivity to spin-dependent interactions of dark matter in the sub-GeV/c 2 mass range. Here, we describe the development of bolometry using both micron scale and sub-micron diameter vibrating wire resonators, with a SQUID amplifier-based readout scheme. Characterisation of the resonators and bolometer measurements are shown, including the use of nonlinear operation and the corresponding corrections. The bolometer contains two vibrating wire resonators, enabling heat injection calibration and simultaneous bolometer tracking measurements. Coincident events measured on both vibrating wire resonators verify their response. We also demonstrate proof of concept frequency multiplexed readout. Development of these measurement techniques lays the foundations for the use of superfluid helium-3 bolometers, instrumented with vibrating nanomechanical resonators, for future low-threshold dark matter searches. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Low Temperature Physics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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