Electromagnetic modeling and science reach of DMRadio-m$^3$

Collaboration, DMRadio; AlShirawi, A.; Bartram, C.; Benabou, J. N.; Brouwer, L.; Chaudhuri, S.; Cho, H. -M.; Corbin, J.; Craddock, W.; Droster, A.; Foster, J. W.; Fry, J. T.; Graham, P. W.; Henning, R.; Irwin, K. D.; Kadribasic, F.; Kahn, Y.; Keller, A.; Kolevatov, R.; Kuenstner, S.; Kurita, N.; Leder, A. F.; Li, D.; Ouellet, J. L.; Pappas, K. M. W.; Phipps, A.; Rapidis, N. M.; Safdi, B. R.; Salemi, C. P.; Simanovskaia, M.; Singh, J.; Assendelft, E. C. van; Bibber, K. van; Wells, K.; Winslow, L.; Wisniewski, W. J.; Young, B. A.

doi:10.48550/arxiv.2302.14084

Cited by 3 publications

(4 citation statements)

References 66 publications

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“…ADMX SLIC [11], BASE [12], DMRadio [13][14][15], SHAFT [16] and WISPLC [17] us a resonant LC circuit to search for tiny oscillating induced magnetic fields generated by a dark matter axion background in the presence of a strong external static magnetic field B 0 . From Eqs.…”

Section: Lc Circuit Resonatorsmentioning

confidence: 99%

Potential of Radio Telescopes as High-Frequency Gravitational Wave Detectors

Domcke

Garcia-Cely

2021

Phys. Rev. Lett.

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Ultra-high frequency gravitational waves in the MHz to THz regime promise a unique possibility to probe the very early universe, particle physics at very high energies and exotic astrophysical objects -but achieving the sensitivity required for detection is an immense challenge. This is a brief summary of recent progress in electromagnetic high-frequency gravitational wave searches, which are based on classical electromagnetism in a space-time perturbed by gravitational waves. A particular focus is given to synergies with axion searches and atomic precision measurements. This article was prepared as proceedings for Moriond EW 2023.

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Section: Lc Circuit Resonatorsmentioning

confidence: 99%

Potential of Radio Telescopes as High-Frequency Gravitational Wave Detectors

Domcke

Garcia-Cely

2021

Phys. Rev. Lett.

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“…Since the sensitivity of DMRadio is set by the sensitivity bandwidth of the experiment [37], and not on-resonance behavior, one can benefit from techniques that take advantage of the tradeoffs between the imprecision noise and backaction noise of quantum amplifiers to achieve a significant increase in scan rate. DMRadio-m 3 has sensitivity to DFSZ axions [38,39] at 100 neV < m a < 800 neV (30 MHz < ν a < 200 MHz) and KSVZ axions [40,41] at 40 neV < m a < 100 neV (10 MHz < ν a <30 MHz) as shown in Figure 1 [42,43]. This experiment is being built at SLAC National Lab.…”

Section: Dmradio-50lmentioning

confidence: 99%

“…As such, the optimal design for such a structure utilizes a solenoidal magnet -this magnet sustains a peak DC field of > 4 T. To couple the vertically oscillating axion current, a copper coaxial pickup structure is placed inside the magnetic field. Tuning of the resonance frequency is achieved by placing a tunable reactance across this coax [43].…”

Section: 3mentioning

confidence: 99%

Status of DMRadio-50L and DMRadio-m$^3$

Rapidis

2023

SciPost Phys. Proc.

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Recent theoretical advancements have made the QCD axion a stronger dark matter candidate, especially in the sub-\muμeV range. While cavity haloscopes have made significant progress in excluding QCD axions in the 1-100 \muμ eV region, the 1 peV- 1 \muμeV region remains unexplored. The DMRadio program consists of a series of experiments designed to probe low mass axions. DMRadio-50L uses a 1 T average field toroidal magnet and a high-Q LC-oscillator with target sensitivity to axions of g_{a\gamma\gamma} < 5 \times 10^{-15}\text{ GeV}^{-1}gaγγ<5×10−15 GeV−1between 5 kHz and 5 MHz. DMRadio-m^33 consists of a higher frequency LC-oscillator in a 4 T peak field solenoidal magnet with sensitivity to the DFSZ model of QCD axions between 30 MHz and 200 MHz. In this work, we present the status of DMRadio-50L and DMRadio-m^3.3.

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“…Across a broader range of m, note also many other ongoing searches for axion fields, including: microwavecavity-based haloscopes[82][83][84], experiments exploiting magnetic resonance[66,85,86], interferometry[87][88][89][90], precision magnetometers and LC circuits[91][92][93][94][95][96], atomic transitions[97,98], searches for an oscillating neutron electric dipole moment[99], and many others (a more complete list can be found in refs [100,101]. and references therein).…”

mentioning

confidence: 99%

A generic formation mechanism of ultralight dark matter solar halos

Budker,

Eby,

Gorghetto

et al. 2023

J. Cosmol. Astropart. Phys.

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As-yet undiscovered light bosons may constitute all or part of the dark matter (DM) of our Universe, and are expected to have (weak) self-interactions. We show that the quartic self-interactions generically induce the capture of dark matter from the surrounding halo by external gravitational potentials such as those of stars, including the Sun. This leads to the subsequent formation of dark matter bound states supported by such external potentials, resembling gravitational atoms (e.g. a solar halo around our own Sun). Their growth is governed by the ratio ξ foc ≡ λdB/R ⋆ between the de Broglie wavelength of the incoming DM waves, λdB, and the radius of the ground state R ⋆. For ξ foc ≲ 1, the gravitational atom grows to an (underdense) steady state that balances the capture of particles and the inverse (stripping) process. For ξ foc ≳ 1, a significant gravitational-focusing effect leads to exponential accumulation of mass from the galactic DM halo into the gravitational atom. For instance, a dark matter axion with mass of the order of 10-14 eV and decay constant between 107 and 108 GeV would form a dense halo around the Sun on a timescale comparable to the lifetime of the Solar System, leading to a local DM density at the position of the Earth 𝒪(104) times larger than that expected in the standard halo model. For attractive self-interactions, after its formation, the gravitational atom is destabilized at a large density, which leads to its collapse; this is likely to be accompanied by emission of relativistic bosons (a `Bosenova').

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Electromagnetic modeling and science reach of DMRadio-m$^3$

Cited by 3 publications

References 66 publications

Potential of Radio Telescopes as High-Frequency Gravitational Wave Detectors

Potential of Radio Telescopes as High-Frequency Gravitational Wave Detectors

Status of DMRadio-50L and DMRadio-m$^3$

A generic formation mechanism of ultralight dark matter solar halos

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