Searching for dark matter with plasma haloscopes

Millar, Alexander J.; Anlage, Steven M.; Balafendiev, Rustam; Belov, Pavel A.; Bibber, K. van; Conrad, J.; Demarteau, M.; Droster, Alexander; Dunne, Katherine Elaine; Rosso, A. Gallo; Gudmundsson, J. E.; Jackson, H. J.; Kaur, Gagandeep; Klaesson, Tove; Kowitt, Nolan; Lawson, Matthew; Leder, A.; Miyazaki, Akira; Morampudi, Sid; Peiris, Hiranya V.; Røising, Henrik S.; Singh, Gaganpreet; Sun, Daniel; Thomas, Jacob H.; Wilczek, Frank; Withington, S.; Wooten, Mackenzie; Dilling, J.; Febbraro, M.; Knirck, Stefan; Marvinney, Claire E.

doi:10.1103/physrevd.107.055013

Cited by 23 publications

(12 citation statements)

References 133 publications

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“…When n − m a d = π, the in-medium wavelength of the magnon-polariton mode matches the slab's thickness, so that cot(n − m a d/2) vanishes, leading to a greatly enhanced form factor. This phenomenon is familiar from other axion searches using quasiparticle resonances [132][133][134][135][136] and remains approximately true even at finite Q.…”

Section: Jhep05(2024)314mentioning

confidence: 71%

“…Note that this implies the thickness of a single slab is much greater than the spacing between slabs, so that L is approximately the total length of the multilayer setup. In this regime, the experiment most closely resembles axion searches using tunable quasiparticle resonances, such as TOORAD [131,135] and ALPHA [132][133][134].…”

Section: Experimental Sensitivitymentioning

confidence: 99%

“…[91]; in particular, it shows that for large ε, which occurs in conductors with σ ≫ m a , the axion-induced current is significantly screened. On the other hand, it was not previously realized that the current can be resonantly enhanced when ε approaches zero, which occurs when the axion mass matches that of a quasiparticle that mixes with the photon, such as a plasmon or phonon [61,123,[131][132][133][134][135][136]. However, the frequencies of such resonances are often not easily tunable.…”

Section: Axioelectric Polarization Currentsmentioning

confidence: 99%

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Physical signatures of fermion-coupled axion dark matter

Berlin,

Millar,

Trickle

et al. 2024

J. High Energ. Phys.

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In the presence of axion dark matter, fermion spins experience an “axion wind” torque and an “axioelectric” force. We investigate new experimental probes of these effects and find that magnetized analogs of multilayer dielectric haloscopes can explore orders of magnitude of new parameter space for the axion-electron coupling. We also revisit the calculation of axion absorption into in-medium excitations, showing that axioelectric absorption is screened in spin-polarized targets, and axion wind absorption can be characterized in terms of a magnetic energy loss function. Finally, our detailed theoretical treatment allows us to critically examine recent claims in the literature. We find that axioelectric corrections to electronic energy levels are smaller than previously estimated and that the purported electron electric dipole moment due to a constant axion field is entirely spurious.

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Section: Jhep05(2024)314mentioning

confidence: 71%

Section: Experimental Sensitivitymentioning

confidence: 99%

Section: Axioelectric Polarization Currentsmentioning

confidence: 99%

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Physical signatures of fermion-coupled axion dark matter

Berlin,

Millar,

Trickle

et al. 2024

J. High Energ. Phys.

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“…The wire metamaterial was simulated using a 10 × 10 array of 2 mm-thick copper wires following the same structure as in Ref. [51], which gives the resonant frequency of 11.42 GHz. On the other hand, the photonic crystal was designed using a 6 × 6 array of 7.45 mmthick dielectric rods with ϵ = 9.7 to produce a similar resonant frequency.…”

Section: Photonic Crystal Cavitymentioning

confidence: 99%

Development of axion haloscopes for high-mass search at CAPP

Youn,

Jeong,

Semertzidis

2024

Front. Phys.

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The axion offers a well-motivated solution to two fundamental questions in modern physics: the strong CP problem and the dark matter mystery. Cavity haloscopes, exploiting resonant enhancement of photon signals, provide the most sensitive searches for axion dark matter in the microwave region. However, current experimental sensitivities are limited to the O(100)μeV range, while recent theoretical predictions for the axion mass favor up to O(102)μeV, suggesting the need of new experimental approaches that are suitable for higher mass regions. CAPP has developed/proposed several haloscopes effective for high-mass axion searches based on new cavity concepts and practical tuning mechanisms. They are characterized by large detection volumes and/or high quality factors at high frequencies, achieved by partitioning a single cavity into multiple cells, exploiting higher-order resonant modes, and constructing dielectric photonic crystal structures. Improving on the dish antenna haloscope scheme, a horn antenna array has also been proposed for volume-efficient broadband search in the THz region. We review these haloscope designs for sensitive search in the high-mass regions and discuss their impacts on future experiments.

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“…Recent years have seen an increased interest to design experiments to cover the post‐inflationary scenario, and collaborations like ADMX and CAPP have drafted their experimental campaigns as a slow increase in mass from the sweet‐spot for cavity haloscopes, ≈

\umu

eV toward the 10 −4 eV range. Many new experiments such as MADMAX, [ 20 ] ALPHA, [ 21 ] ORGAN, [ 22 ] CADEx, [ 23 ] or BREAD [ 24 ] aim directly at higher masses, motivated in the context of post‐inflationary predictions, with a standard radiation dominated early Universe.…”

Section: Introductionmentioning

confidence: 99%

A Proposal for a Low‐Frequency Axion Search in the 1–2 μ$\umu$ eV Range and Below with the BabyIAXO Magnet

Ahyoune,

Álvarez Melcón,

Arguedas Cuendis

et al. 2023

Annalen der Physik

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In the near future BabyIAXO will be the most powerful axion helioscope, relying on a custom‐made magnet of two bores of 70 cm diameter and 10 m long, with a total available magnetic volume of more than 7 m3. In this document, it proposes and describe the implementation of low‐frequency axion haloscope setups suitable for operation inside the BabyIAXO magnet. The RADES proposal has a potential sensitivity to the axion‐photon coupling down to values corresponding to the KSVZ model, in the (currently unexplored) mass range between 1 and 2 eV, after a total effective exposure of 440 days. This mass range is covered by the use of four differently dimensioned 5‐meter‐long cavities, equipped with a tuning mechanism based on inner turning plates. A setup like the one proposed will also allow an exploration of the same mass range for hidden photons coupled to photons. An additional complementary apparatus is proposed using LC circuits and exploring the low energy range ( eV). The setup includes a cryostat and cooling system to cool down the BabyIAXO bore down to about 5 K, as well as an appropriate low‐noise signal amplification and detection chain.

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Searching for dark matter with plasma haloscopes

Cited by 23 publications

References 133 publications

Physical signatures of fermion-coupled axion dark matter

Physical signatures of fermion-coupled axion dark matter

Development of axion haloscopes for high-mass search at CAPP

A Proposal for a Low‐Frequency Axion Search in the 1–2 μ$\umu$ eV Range and Below with the BabyIAXO Magnet

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