First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector

Agnese, R.; Aralis, T.; Aramaki, T.; Arnquist, I. J.; Azadbakht, E.; Baker, William K.; Banik, S.; Barker, D.; Bauer, D. A.; Binder, Tobias; Bowles, M. A.; Brink, P. L.; Bunker, R.; Cabrera, B.; Calkins, R.; Cartaro, C.; Cerdeño, David G.; Chang, Yen-Yung; Cooley, J.; Cornell, B.; Cushman, P.; Stefano, P. C. F. Di; Doughty, T.; Fascione, E.; Figueroa‐Feliciano, E.; Fink, C. W.; Fritts, M.; Gerbier, G.; Germond, R.; Ghaith, M.; Golwala, S. R.; Harris, H. R.; Hong, Z.; Hoppe, E. W.; Hsu, L.; Huber, M. E.; Iyer, V.; Jardin, D.; Jena, C.; Kelsey, M.; Kennedy, A.; Kubik, A.; Kurinsky, Noah; Lawrence, R. E.; Leyva, J. V.; Loer, B.; Asamar, E. Lopez; Lukens, P.; Macdonell, Danika Marina; Mahapatra, R.; Mandic, V.; Mast, N.; Miller, E. H.; Mirabolfathi, N.; Mohanty, B.; Mendoza, J. D. Morales; Nelson, J. K.; Orrell, J. L.; Oser, S. M.; Page, W. A.; Partridge, R.; Pepin, M.; Phipps, A.; Ponce, F.; Poudel, S. S.; Pyle, M.; Qiu, H.; Rau, W.; Reisetter, A.; Reynolds, T. N.; Roberts, A.; Robinson, Alan; Rogers, H. E.; Romani, R. K.; Saab, T.; Sadoulet, B.; Sander, J.; Scarff, A.; Schnee, R. W.; Scorza, S.; Senapati, Kartik; Serfass, B.; So, J. H.; Speller, D.; Stanford, C.; Stein, M.; Street, J. C.; Tanaka, Hirohisa; Toback, D.; Underwood, R.; Villano, A. N.; Krosigk, B. von; Watkins, S. L.; Wilson, J. S.; Wilson, M. J.; Winchell, J.; Wright, D. H.; Yellin, S.; Young, B. A.; Zhang, X.; Zhao, X.

doi:10.1103/physrevlett.121.051301

Cited by 261 publications

(221 citation statements)

References 40 publications

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“…A quadratic calibration of the form ax(1 + bx) was performed using the centroids from Gaussian fits to the 1, 2, and 3 e − h + pair peaks. The non-linearity, b, was on the order of 3%, which was consistent with prior measurements using more peaks at higher intensity [10]. Figure 1 (top) shows the scatter plot of calibrated timeshifting OF amplitudes versus relative arrival times for the +140 V bias high-intensity data.…”

supporting

confidence: 84%

Measuring the impact ionization and charge trapping probabilities in SuperCDMS HVeV phonon sensing detectors

et al. 2020

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A 0.93 gram 1×1×0.4 cm 3 SuperCDMS silicon HVeV detector operated at 30 mK was illuminated by 1.91 eV photons using a room temperature pulsed laser coupled to the cryostat via fiber optic. The detector's response under a variety of specific operating conditions was used to study the detector leakage current, charge trapping and impact ionization in the high-purity Si substrate. The measured probabilities for a charge carrier in the detector to undergo charge trapping (0.713 ± 0.093%) or cause impact ionization (1.576 ± 0.110%) were found to be nearly independent of bias polarity and charge-carrier type (electron or hole) for substrate biases of ± 140 V.

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supporting

confidence: 84%

Measuring the impact ionization and charge trapping probabilities in SuperCDMS HVeV phonon sensing detectors

et al. 2020

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“…Indeed, nanowires that exhibit sensitivity to 5 µm wavelength photons, corresponding to an energy threshold of ∼ 250 meV, have been demonstrated [23], and it is likely that further technology developments could push the energy sensitivity to 10 µm or even beyond. As we will show, the reach of the SNSPDs into the sub-MeV DM mass range is substantial, and can provide excellent results even with very small target masses, which can be constructed on rela- [34] (shaded red) and SENSEI [35] (shaded purple), as well as the projected reach for a kg-yr exposure of a silicon target [36] (dotted green) and superconducting bulk aluminum with a 10 meV threshold [9,10] (dotted gray). For clarity, 177 µg corresponds to a 10 by 10 cm 2 area of NbN at 4 nm thickness and a 50% fill factor, and 248 (124) meV threshold corresponds to a 5 (10) µm wavelength.…”

Section: Conceptmentioning

confidence: 92%

“…projected reach, corresponding to 3 signal events, for SNSPDs with various amounts of exposures and thresholds, assuming a dynamic range of 3 orders of magnitude. We also show the projected reach for a kg-year exposure of a silicon target with singleelectron sensitivity [36] and of an aluminum target with a 10 meV threshold TES [9,10], along with constraints from the Xenon10 [2], SENSEI [35] and SuperCDMS [34] experiments.…”

Section: Reachmentioning

confidence: 99%

Detecting Sub-GeV Dark Matter with Superconducting Nanowires

et al. 2019

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We propose the use of superconducting nanowires as both target and sensor for direct detection of sub-GeV dark matter. With excellent sensitivity to small energy deposits on electrons, and demonstrated low dark counts, such devices could be used to probe electron recoils from dark matter scattering and absorption processes. We demonstrate the feasibility of this idea using measurements of an existing fabricated tungsten-silicide nanowire prototype with 0.8-eV energy threshold and 4.3 nanograms with 10 thousand seconds of exposure, which showed no dark counts. The results from this device already place meaningful bounds on dark matter-electron interactions, including the strongest terrestrial bounds on sub-eV dark photon absorption to date. Future expected fabrication on larger scales and with lower thresholds should enable probing new territory in the direct detection landscape, establishing the complementarity of this approach to other existing proposals.

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“…Other lesssensitive limits are found in Ref. [24]. Note that for a high enough DM-e − cross section the DM flux at SNO-LAB would be drastically reduced by interactions in the rock overburden [19].…”

mentioning

confidence: 99%

Constraints on Light Dark Matter Particles Interacting with Electrons from DAMIC at SNOLAB

Aguilar-Arevalo¹,

Amidei²,

Baxter³

et al. 2019

Phys. Rev. Lett.

235

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We report direct-detection constraints on light dark matter particles interacting with electrons. The results are based on a method that exploits the extremely low levels of leakage current of the DAMIC detector at SNOLAB of 2-6×10 −22 A cm −2 . We evaluate the charge distribution of pixels that collect < 10 e − for contributions beyond the leakage current that may be attributed to dark matter interactions. Constraints are placed on so-far unexplored parameter space for dark matter masses between 0.6 and 100 MeV c −2 . We also present new constraints on hidden-photon dark matter with masses in the range 1.2-30 eV c −2 .There is overwhelming astrophysical and cosmological evidence for Dark Matter (DM) as a major constituent of the universe. Still, its nature remains elusive. The compelling Weakly Interacting Massive Particle (WIMP) dark matter paradigm [1] -implying DM is made of hitherto unknown particles with mass in the GeV-TeV scale -has been intensely scrutinized during the last two decades by detectors up to the tonne-scale looking for nuclear recoils induced by coherent scattering of WIMPs. Despite the impressive improvements in sensitivity, notably by noble liquid experiments [2], WIMPs have so far escaped detection. Other viable candidates include DM particles from a hidden-sector [3], which couple weakly with ordinary matter through, for example, mixing of a hidden-photon with an ordinary photon [4]. A phenomenological consequence is that hiddensector DM particles also interact with electrons, with sufficiently large energy transfers to be detectable down to DM masses of ≈ MeV [5]. Also, eV-mass hidden-photon DM particles can be probed through absorption by electrons in detection targets [The DAMIC (Dark Matter in CCDs) experiment [7] is well-suited for a sensitive search of this class of DM candidates. DAMIC detects ionization events induced in the bulk silicon of thick, fully depleted Charge Coupled Devices (CCDs). By exploiting the charge resolution of the CCDs (≈ 2 e − ) and their extremely low leakage current (≈ 4 e − mm −2 d −1 ), DAMIC has already placed constraints on hidden-photon DM with masses in the range 1.2-30 eV c −2 [8] with data collected during the experiment's commissioning phase. In this Letter we apply a similar approach to explore DM-e − interactions with high-quality data from the DAMIC science run at the SNOLAB underground laboratory. We also present improved limits on hidden-photon DM particles.To model DM-e − interactions we follow Ref.[9] where the bound nature of the electrons and crystalline band structure of the target are properly taken into account. The differential event rate in the detector for a DM mass m χ , with transferred energy E e , and momentum q is parametrized as dR dE e ∝σ e dq q 2 η(m χ , q, E e )|F DM (q)| 2 |f c (q, E e )| 2 , (1) whereσ e is a reference cross section for free electron arXiv:1907.12628v1 [astro-ph.CO]

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First Dark Matter Constraints from a SuperCDMS Single-Charge Sensitive Detector

Cited by 261 publications

References 40 publications

Measuring the impact ionization and charge trapping probabilities in SuperCDMS HVeV phonon sensing detectors

Measuring the impact ionization and charge trapping probabilities in SuperCDMS HVeV phonon sensing detectors

Detecting Sub-GeV Dark Matter with Superconducting Nanowires

Constraints on Light Dark Matter Particles Interacting with Electrons from DAMIC at SNOLAB

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