TY - JOUR
T1 - Tunable Axion Plasma Haloscopes
AU - Lawson, Matthew
AU - Millar, Alexander J.
AU - Pancaldi, Matteo
AU - Vitagliano, Edoardo
AU - Wilczek, Frank
N1 - Publisher Copyright:
© 2019 authors. Published by the American Physical Society.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - We propose a new strategy for searching for dark matter axions using tunable cryogenic plasmas. Unlike current experiments, which repair the mismatch between axion and photon masses by breaking translational invariance (cavity and dielectric haloscopes), a plasma haloscope enables resonant conversion by matching the axion mass to a plasma frequency. A key advantage is that the plasma frequency is unrelated to the physical size of the device, allowing large conversion volumes. We identify wire metamaterials as a promising candidate plasma, wherein the plasma frequency can be tuned by varying the interwire spacing. For realistic experimental sizes, we estimate competitive sensitivity for axion masses of 35-400 μeV, at least.
AB - We propose a new strategy for searching for dark matter axions using tunable cryogenic plasmas. Unlike current experiments, which repair the mismatch between axion and photon masses by breaking translational invariance (cavity and dielectric haloscopes), a plasma haloscope enables resonant conversion by matching the axion mass to a plasma frequency. A key advantage is that the plasma frequency is unrelated to the physical size of the device, allowing large conversion volumes. We identify wire metamaterials as a promising candidate plasma, wherein the plasma frequency can be tuned by varying the interwire spacing. For realistic experimental sizes, we estimate competitive sensitivity for axion masses of 35-400 μeV, at least.
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U2 - 10.1103/PhysRevLett.123.141802
DO - 10.1103/PhysRevLett.123.141802
M3 - Article
C2 - 31702176
AN - SCOPUS:85073075914
SN - 0031-9007
VL - 123
JO - Physical Review Letters
JF - Physical Review Letters
IS - 14
M1 - 141802
ER -