Final published version
Licence: CC BY: Creative Commons Attribution 4.0 International License
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - QUEST-DMC
T2 - Background Modelling and Resulting Heat Deposit for a Superfluid Helium-3 Bolometer
AU - Autti, S.
AU - Casey, A.
AU - Eng, N.
AU - Darvishi, N.
AU - Franchini, P.
AU - Haley, R. P.
AU - Heikkinen, P. J.
AU - Kemp, A.
AU - Leason, E.
AU - Levitin, L. V.
AU - Monroe, J.
AU - March-Russel, J.
AU - Noble, M. T.
AU - Prance, J. R.
AU - Rojas, X.
AU - Salmon, T.
AU - Saunders, J.
AU - Smith, R.
AU - Thompson, M. D.
AU - Tsepelin, V.
AU - West, S. M.
AU - Whitehead, L.
AU - Zhang, K.
AU - Zmeev, D. E.
PY - 2024/6/30
Y1 - 2024/6/30
N2 - We report the results of radioactivity assays and heat leak calculations for a range of common cryogenic materials, considered for use in the QUEST-DMC superfluid 3He dark matter detector. The bolometer, instrumented with nanomechanical resonators, will be sensitive to energy deposits from dark matter interactions. Events from radioactive decays and cosmic rays constitute a significant background and must be precisely modelled, using a combination of material screening and Monte Carlo simulations. However, the results presented here are of wider interest for experiments and quantum devices sensitive to minute heat leaks and spurious events, thus we present heat leak per unit mass or surface area for every material studied. This can inform material choices for other experiments, especially if underground operation is considered – where the radiogenic backgrounds will dominate even at shallow depths.
AB - We report the results of radioactivity assays and heat leak calculations for a range of common cryogenic materials, considered for use in the QUEST-DMC superfluid 3He dark matter detector. The bolometer, instrumented with nanomechanical resonators, will be sensitive to energy deposits from dark matter interactions. Events from radioactive decays and cosmic rays constitute a significant background and must be precisely modelled, using a combination of material screening and Monte Carlo simulations. However, the results presented here are of wider interest for experiments and quantum devices sensitive to minute heat leaks and spurious events, thus we present heat leak per unit mass or surface area for every material studied. This can inform material choices for other experiments, especially if underground operation is considered – where the radiogenic backgrounds will dominate even at shallow depths.
KW - Background
KW - Bolometry
KW - Dark matter
KW - Superfluid helium
U2 - 10.1007/s10909-024-03142-w
DO - 10.1007/s10909-024-03142-w
M3 - Journal article
AN - SCOPUS:85182789083
VL - 215
SP - 465
EP - 476
JO - Journal of Low Temperature Physics
JF - Journal of Low Temperature Physics
SN - 0022-2291
IS - 5-6
ER -