John March-Russell: Publications

QUEST-DMC superfluid 3 He detector for sub-GeV dark matter

The European Physical Journal C SpringerOpen 84:3 (2024) 248

Authors:

S Autti, A Casey, N Eng, N Darvishi, P Franchini, RP Haley, PJ Heikkinen, A Jennings, A Kemp, E Leason, LV Levitin, J Monroe, J March-Russel, MT Noble, JR Prance, X Rojas, T Salmon, J Saunders, R Smith, MD Thompson, V Tsepelin, SM West, L Whitehead, VV Zavjalov

Abstract:

The focus of dark matter searches to date has been on Weakly Interacting Massive Particles (WIMPs) in the GeV/c2-TeV/c2 mass range. The direct, indirect and collider searches in this mass range have been extensive but ultimately unsuccessful, providing a strong motivation for widening the search outside this range. Here we describe a new concept for a dark matter experiment, employing superfluid 3He as a detector for dark matter that is close to the mass of the proton, of order 1 GeV/c2. The QUEST-DMC detector concept is based on quasiparticle detection in a bolometer cell by a nanomechanical resonator. In this paper we develop the energy measurement methodology and detector response model, simulate candidate dark matter signals and expected background interactions, and calculate the sensitivity of such a detector. We project that such a detector can reach sub-eV nuclear recoil energy threshold, opening up new windows on the parameter space of both spin-dependent and spin-independent interactions of light dark matter candidates.

Chern-Simons bubbles: Lopsided false vacuum decay in axion electrodynamics

(2024)

Authors:

Saquib Hassan, John March-Russell, Georges Obied

QUEST-DMC: Background Modelling and Resulting Heat Deposit for a Superfluid Helium-3 Bolometer

(2024)

Authors:

S Autti, A Casey, N Eng, N Darvishi, P Franchini, RP Haley, PJ Heikkinen, A Kemp, E Leason, LV Levitin, J Monroe, J March-Russel, MT Noble, JR Prance, X Rojas, T Salmon, J Saunders, R Smith, MD Thompson, V Tsepelin, SM West, L Whitehead, K Zhang, DE Zmeev

QUEST-DMC superfluid $^3$He detector for sub-GeV dark matter

(2023)

Authors:

Searching for wave-like dark matter with QSHS

SciPost Physics Proceedings SciPost 12 (2023)

Authors:

Ian Bailey, Bhaswati Chakraborty, Gemma Chapman, Edward J Daw, John Gallop, Gianluca Gregori, Edward Hardy, Ling Hao, Edward Laird, Peter Leek, John March-Russell, Phil Meeson, Seaárbhan Ó Peatáin, Yuri Pashkin, Mitchell G Perry, Michele Piscitelli, Edward Romans, Subir Sarkar, Paul J Smith, Ningqiang Song, Mahesh Soni, Boon Kok Tan, Stephen West, Stafford Withington

Abstract:

In 2021 the Quantum Sensors for the Hidden Sector (QSHS) collaboration was founded in the UK and received funding to develop and demonstrate quantum devices with the potential to detect hidden sector particles in the μeV to 100 μeV mass window. The collaboration has been developing a range of devices. It is building a high-field, low-temperature facility at the University of Sheffield to characterise and test the devices in a haloscope geometry. This paper introduces the collaboration's motivation, aims, and progress.

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