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</div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.07790">arXiv:2403.07790</a> <span> [<a href="https://arxiv.org/pdf/2403.07790">pdf</a>, <a href="https://arxiv.org/format/2403.07790">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> RADES axion search results with a High-Temperature Superconducting cavity in an 11.7 T magnet </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Ahyoune%2C+S">S. Ahyoune</a>, <a href="/search/hep-ex?searchtype=author&query=Melc%C3%B3n%2C+A+%C3%81">A. 脕lvarez Melc贸n</a>, <a href="/search/hep-ex?searchtype=author&query=Cuendis%2C+S+A">S. Arguedas Cuendis</a>, <a href="/search/hep-ex?searchtype=author&query=Calatroni%2C+S">S. Calatroni</a>, <a href="/search/hep-ex?searchtype=author&query=Cogollos%2C+C">C. Cogollos</a>, <a href="/search/hep-ex?searchtype=author&query=D%C3%ADaz-Morcillo%2C+A">A. D铆az-Morcillo</a>, <a href="/search/hep-ex?searchtype=author&query=D%C3%B6brich%2C+B">B. D枚brich</a>, <a href="/search/hep-ex?searchtype=author&query=Gallego%2C+J+D">J. D. Gallego</a>, <a href="/search/hep-ex?searchtype=author&query=Garc%C3%ADa-Barcel%C3%B3%2C+J+M">J. M. Garc铆a-Barcel贸</a>, <a href="/search/hep-ex?searchtype=author&query=Gimeno%2C+B">B. Gimeno</a>, <a href="/search/hep-ex?searchtype=author&query=Golm%2C+J">J. Golm</a>, <a href="/search/hep-ex?searchtype=author&query=Granados%2C+X">X. Granados</a>, <a href="/search/hep-ex?searchtype=author&query=Gutierrez%2C+J">J. Gutierrez</a>, <a href="/search/hep-ex?searchtype=author&query=Herwig%2C+L">L. Herwig</a>, <a href="/search/hep-ex?searchtype=author&query=Irastorza%2C+I+G">I. G. Irastorza</a>, <a href="/search/hep-ex?searchtype=author&query=Lamas%2C+N">N. Lamas</a>, <a href="/search/hep-ex?searchtype=author&query=Lozano-Guerrero%2C+A">A. Lozano-Guerrero</a>, <a href="/search/hep-ex?searchtype=author&query=Millar%2C+W+L">W. L. Millar</a>, <a href="/search/hep-ex?searchtype=author&query=Malbrunot%2C+C">C. Malbrunot</a>, <a href="/search/hep-ex?searchtype=author&query=Miralda-Escud%C3%A9%2C+J">J. Miralda-Escud茅</a>, <a href="/search/hep-ex?searchtype=author&query=Navarro%2C+P">P. Navarro</a>, <a href="/search/hep-ex?searchtype=author&query=Navarro-Madrid%2C+J+R">J. R. Navarro-Madrid</a>, <a href="/search/hep-ex?searchtype=author&query=Puig%2C+T">T. Puig</a>, <a href="/search/hep-ex?searchtype=author&query=Siodlaczek%2C+M">M. Siodlaczek</a>, <a href="/search/hep-ex?searchtype=author&query=Telles%2C+G+T">G. T. Telles</a> , et al. (1 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2403.07790v1-abstract-short" style="display: inline;"> We describe the results of a haloscope axion search performed with an 11.7 T dipole magnet at CERN. The search used a custom-made radio-frequency cavity coated with high-temperature superconducting tape. A set of 27 h of data at a resonant frequency of around 8.84 GHz was analysed. In the range of axion mass 36.5676 $渭$eV to 36.5699 $渭$eV, corresponding to a width of 554 kHz, no signal excess hint… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.07790v1-abstract-full').style.display = 'inline'; document.getElementById('2403.07790v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.07790v1-abstract-full" style="display: none;"> We describe the results of a haloscope axion search performed with an 11.7 T dipole magnet at CERN. The search used a custom-made radio-frequency cavity coated with high-temperature superconducting tape. A set of 27 h of data at a resonant frequency of around 8.84 GHz was analysed. In the range of axion mass 36.5676 $渭$eV to 36.5699 $渭$eV, corresponding to a width of 554 kHz, no signal excess hinting at an axion-like particle was found. Correspondingly, in this mass range, a limit on the axion to photon coupling-strength was set in the range between g$_{a纬}\gtrsim$ 6.2e-13 GeV$^{-1}$ and g$_{a纬}\gtrsim$ 1.54e-13 GeV$^{-1}$ with a 95% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.07790v1-abstract-full').style.display = 'none'; document.getElementById('2403.07790v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">19 pages, 8 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2024-076, MPP-2024-55 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2206.02980">arXiv:2206.02980</a> <span> [<a href="https://arxiv.org/pdf/2206.02980">pdf</a>, <a href="https://arxiv.org/format/2206.02980">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1475-7516/2022/11/044">10.1088/1475-7516/2022/11/044 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Canfranc Axion Detection Experiment (CADEx): Search for axions at 90 GHz with Kinetic Inductance Detectors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Aja%2C+B">Beatriz Aja</a>, <a href="/search/hep-ex?searchtype=author&query=Cuendis%2C+S+A">Sergio Arguedas Cuendis</a>, <a href="/search/hep-ex?searchtype=author&query=Arregui%2C+I">Ivan Arregui</a>, <a href="/search/hep-ex?searchtype=author&query=Artal%2C+E">Eduardo Artal</a>, <a href="/search/hep-ex?searchtype=author&query=Barreiro%2C+R+B">R. Bel茅n Barreiro</a>, <a href="/search/hep-ex?searchtype=author&query=Casas%2C+F+J">Francisco J. Casas</a>, <a href="/search/hep-ex?searchtype=author&query=de+Ory%2C+M+C">Maria C. de Ory</a>, <a href="/search/hep-ex?searchtype=author&query=D%C3%ADaz-Morcillo%2C+A">Alejandro D铆az-Morcillo</a>, <a href="/search/hep-ex?searchtype=author&query=de+la+Fuente%2C+L">Luisa de la Fuente</a>, <a href="/search/hep-ex?searchtype=author&query=Gallego%2C+J+D">Juan Daniel Gallego</a>, <a href="/search/hep-ex?searchtype=author&query=Garc%C3%ADa-Barcel%C3%B3%2C+J+M">Jos茅 Mar铆a Garc铆a-Barcel贸</a>, <a href="/search/hep-ex?searchtype=author&query=Gimeno%2C+B">Benito Gimeno</a>, <a href="/search/hep-ex?searchtype=author&query=Gomez%2C+A">Alicia Gomez</a>, <a href="/search/hep-ex?searchtype=author&query=Granados%2C+D">Daniel Granados</a>, <a href="/search/hep-ex?searchtype=author&query=Kavanagh%2C+B+J">Bradley J. Kavanagh</a>, <a href="/search/hep-ex?searchtype=author&query=Laso%2C+M+A+G">Miguel A. G. Laso</a>, <a href="/search/hep-ex?searchtype=author&query=Lopetegi%2C+T">Txema Lopetegi</a>, <a href="/search/hep-ex?searchtype=author&query=Lozano-Guerrero%2C+A+J">Antonio Jos茅 Lozano-Guerrero</a>, <a href="/search/hep-ex?searchtype=author&query=Magaz%2C+M+T">Maria T. Magaz</a>, <a href="/search/hep-ex?searchtype=author&query=Mart%C3%ADn-Pintado%2C+J">Jes煤s Mart铆n-Pintado</a>, <a href="/search/hep-ex?searchtype=author&query=Mart%C3%ADnez-Gonz%C3%A1lez%2C+E">Enrique Mart铆nez-Gonz谩lez</a>, <a href="/search/hep-ex?searchtype=author&query=Miralda-Escud%C3%A9%2C+J">Jordi Miralda-Escud茅</a>, <a href="/search/hep-ex?searchtype=author&query=Monz%C3%B3-Cabrera%2C+J">Juan Monz贸-Cabrera</a>, <a href="/search/hep-ex?searchtype=author&query=Navarro-Madrid%2C+J+R">Jose R. Navarro-Madrid</a>, <a href="/search/hep-ex?searchtype=author&query=Chico%2C+A+B+N">Ana B. Nu帽ez Chico</a> , et al. (11 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2206.02980v1-abstract-short" style="display: inline;"> We propose a novel experiment, the Canfranc Axion Detection Experiment (CADEx), to probe dark matter axions with masses in the range 330-460 $渭$eV, within the W-band (80-110 GHz), an unexplored parameter space in the well-motivated dark matter window of Quantum ChromoDynamics (QCD) axions. The experimental design consists of a microwave resonant cavity haloscope in a high static magnetic field cou… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.02980v1-abstract-full').style.display = 'inline'; document.getElementById('2206.02980v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2206.02980v1-abstract-full" style="display: none;"> We propose a novel experiment, the Canfranc Axion Detection Experiment (CADEx), to probe dark matter axions with masses in the range 330-460 $渭$eV, within the W-band (80-110 GHz), an unexplored parameter space in the well-motivated dark matter window of Quantum ChromoDynamics (QCD) axions. The experimental design consists of a microwave resonant cavity haloscope in a high static magnetic field coupled to a highly sensitive detecting system based on Kinetic Inductance Detectors via optimized quasi-optics (horns and mirrors). The experiment is in preparation and will be installed in the dilution refrigerator of the Canfranc Underground Laboratory. Sensitivity forecasts for axion detection with CADEx, together with the potential of the experiment to search for dark photons, are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.02980v1-abstract-full').style.display = 'none'; document.getElementById('2206.02980v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">23 pages, 10 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2111.14510">arXiv:2111.14510</a> <span> [<a href="https://arxiv.org/pdf/2111.14510">pdf</a>, <a href="https://arxiv.org/format/2111.14510">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3390/universe8010005">10.3390/universe8010005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Design of new resonant haloscopes in the search for the darkmatter axion: a review of the first steps in the RADES collaboration </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=D%C3%ADaz-Morcillo%2C+A">A. D铆az-Morcillo</a>, <a href="/search/hep-ex?searchtype=author&query=Barcel%C3%B3%2C+J+M+G">J. M. Garc铆a Barcel贸</a>, <a href="/search/hep-ex?searchtype=author&query=Lozano-Guerrero%2C+A+J">A. J. Lozano-Guerrero</a>, <a href="/search/hep-ex?searchtype=author&query=Navarro%2C+P">P. Navarro</a>, <a href="/search/hep-ex?searchtype=author&query=Gimeno%2C+B">B. Gimeno</a>, <a href="/search/hep-ex?searchtype=author&query=Cuendis%2C+S+A">S. Arguedas Cuendis</a>, <a href="/search/hep-ex?searchtype=author&query=Melc%C3%B3n%2C+A+%C3%81">A. 脕lvarez Melc贸n</a>, <a href="/search/hep-ex?searchtype=author&query=Cogollos%2C+C">C. Cogollos</a>, <a href="/search/hep-ex?searchtype=author&query=Calatroni%2C+S">S. Calatroni</a>, <a href="/search/hep-ex?searchtype=author&query=D%C3%B6brich%2C+B">B. D枚brich</a>, <a href="/search/hep-ex?searchtype=author&query=Gallego%2C+J+D">J. D. Gallego</a>, <a href="/search/hep-ex?searchtype=author&query=Golm%2C+J">J. Golm</a>, <a href="/search/hep-ex?searchtype=author&query=Irastorza%2C+I+G">I. G. Irastorza</a>, <a href="/search/hep-ex?searchtype=author&query=Malbrunot%2C+C">C. Malbrunot</a>, <a href="/search/hep-ex?searchtype=author&query=Miralda-Escud%C3%A9%2C+J">Jordi Miralda-Escud茅</a>, <a href="/search/hep-ex?searchtype=author&query=Garay%2C+C+P">C. Pe帽a Garay</a>, <a href="/search/hep-ex?searchtype=author&query=Redondo%2C+J">J. Redondo</a>, <a href="/search/hep-ex?searchtype=author&query=Wuensch%2C+W">W. Wuensch</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2111.14510v2-abstract-short" style="display: inline;"> Within the increasing interest in the dark matter axion detection through haloscopes, in which different international groups are currently involved, the RADES group was established in 2016 with the goal of developing very sensitive detection systems to be operated in dipole magnets. This review deals with the work developed by this collaboration during its first five years, from the first designs… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.14510v2-abstract-full').style.display = 'inline'; document.getElementById('2111.14510v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.14510v2-abstract-full" style="display: none;"> Within the increasing interest in the dark matter axion detection through haloscopes, in which different international groups are currently involved, the RADES group was established in 2016 with the goal of developing very sensitive detection systems to be operated in dipole magnets. This review deals with the work developed by this collaboration during its first five years, from the first designs, based on the multi-cavity concept, aiming to increase the haloscope volume and, so, to improve its sensitivity, their evolution, the data acquisition design, and, finally, the first experimental run. Moreover, the envisaged work within RADES, for both dipole and solenoid magnets, in the short and medium term is also presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.14510v2-abstract-full').style.display = 'none'; document.getElementById('2111.14510v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 January, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Review paper, 24 pages, 18 figures, 57 references</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Universe 2022, 8, 5 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2110.01296">arXiv:2110.01296</a> <span> [<a href="https://arxiv.org/pdf/2110.01296">pdf</a>, <a href="https://arxiv.org/format/2110.01296">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1109/TASC.2022.3147741">10.1109/TASC.2022.3147741 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Thin Film (High Temperature) Superconducting Radiofrequency Cavities for the Search of Axion Dark Matter </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Golm%2C+J">J. Golm</a>, <a href="/search/hep-ex?searchtype=author&query=Cuendis%2C+S+A">S. Arguedas Cuendis</a>, <a href="/search/hep-ex?searchtype=author&query=Calatroni%2C+S">S. Calatroni</a>, <a href="/search/hep-ex?searchtype=author&query=Cogollos%2C+C">C. Cogollos</a>, <a href="/search/hep-ex?searchtype=author&query=D%C3%B6brich%2C+B">B. D枚brich</a>, <a href="/search/hep-ex?searchtype=author&query=Gallego%2C+J+D">J. D. Gallego</a>, <a href="/search/hep-ex?searchtype=author&query=Barcel%C3%B3%2C+J+M+G">J. M. Garc铆a Barcel贸</a>, <a href="/search/hep-ex?searchtype=author&query=Granados%2C+X">X. Granados</a>, <a href="/search/hep-ex?searchtype=author&query=Gutierrez%2C+J">J. Gutierrez</a>, <a href="/search/hep-ex?searchtype=author&query=Irastorza%2C+I+G">I. G. Irastorza</a>, <a href="/search/hep-ex?searchtype=author&query=Koettig%2C+T">T. Koettig</a>, <a href="/search/hep-ex?searchtype=author&query=Lamas%2C+N">N. Lamas</a>, <a href="/search/hep-ex?searchtype=author&query=Liberadzka-Porret%2C+J">J. Liberadzka-Porret</a>, <a href="/search/hep-ex?searchtype=author&query=Malbrunot%2C+C">C. Malbrunot</a>, <a href="/search/hep-ex?searchtype=author&query=Millar%2C+W+L">W. L. Millar</a>, <a href="/search/hep-ex?searchtype=author&query=Navarro%2C+P">P. Navarro</a>, <a href="/search/hep-ex?searchtype=author&query=Carlos%2C+C+P">C. Pereira Carlos</a>, <a href="/search/hep-ex?searchtype=author&query=Puig%2C+T">T. Puig</a>, <a href="/search/hep-ex?searchtype=author&query=Rosaz%2C+G+J">G. J. Rosaz</a>, <a href="/search/hep-ex?searchtype=author&query=Siodlaczek%2C+M">M. Siodlaczek</a>, <a href="/search/hep-ex?searchtype=author&query=Telles%2C+G">G. Telles</a>, <a href="/search/hep-ex?searchtype=author&query=Wuensch%2C+W">W. Wuensch</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2110.01296v2-abstract-short" style="display: inline;"> The axion is a hypothetical particle which is a candidate for cold dark matter. Haloscope experiments directly search for these particles in strong magnetic fields with RF cavities as detectors. The Relic Axion Detector Exploratory Setup (RADES) at CERN in particular is searching for axion dark matter in a mass range above 30 $渭$eV. The figure of merit of our detector depends linearly on the quali… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.01296v2-abstract-full').style.display = 'inline'; document.getElementById('2110.01296v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2110.01296v2-abstract-full" style="display: none;"> The axion is a hypothetical particle which is a candidate for cold dark matter. Haloscope experiments directly search for these particles in strong magnetic fields with RF cavities as detectors. The Relic Axion Detector Exploratory Setup (RADES) at CERN in particular is searching for axion dark matter in a mass range above 30 $渭$eV. The figure of merit of our detector depends linearly on the quality factor of the cavity and therefore we are researching the possibility of coating our cavities with different superconducting materials to increase the quality factor. Since the experiment operates in strong magnetic fields of 11 T and more, superconductors with high critical magnetic fields are necessary. Suitable materials for this application are for example REBa$_2$Cu$_3$O$_{7-x}$, Nb$_3$Sn or NbN. We designed a microwave cavity which resonates at around 9~GHz, with a geometry optimized to facilitate superconducting coating and designed to fit in the bore of available high-field accelerator magnets at CERN. Several prototypes of this cavity were coated with different superconducting materials, employing different coating techniques. These prototypes were characterized in strong magnetic fields at 4.2 K. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.01296v2-abstract-full').style.display = 'none'; document.getElementById('2110.01296v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 February, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 6 figures. v2: minor updates after referee comments, matches published version in IEEE</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> IEEE Transactions on Applied Superconductivity 2022 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2107.03137">arXiv:2107.03137</a> <span> [<a href="https://arxiv.org/pdf/2107.03137">pdf</a>, <a href="https://arxiv.org/format/2107.03137">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.dark.2022.101001">10.1016/j.dark.2022.101001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Wide-band full-wave electromagnetic modal analysis of the coupling between dark-matter axions and photons in microwave resonators </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Navarro%2C+P">P. Navarro</a>, <a href="/search/hep-ex?searchtype=author&query=Gimeno%2C+B">Benito Gimeno</a>, <a href="/search/hep-ex?searchtype=author&query=Melcon%2C+A+A">A. Alvarez Melcon</a>, <a href="/search/hep-ex?searchtype=author&query=Cuendis%2C+S+A">S. Arguedas Cuendis</a>, <a href="/search/hep-ex?searchtype=author&query=Cogollos%2C+C">C. Cogollos</a>, <a href="/search/hep-ex?searchtype=author&query=Diaz-Morcillo%2C+A">A. Diaz-Morcillo</a>, <a href="/search/hep-ex?searchtype=author&query=Gallego%2C+J+D">J. D. Gallego</a>, <a href="/search/hep-ex?searchtype=author&query=Barcelo%2C+J+M+G">J. M. Garcia Barcelo</a>, <a href="/search/hep-ex?searchtype=author&query=Golm%2C+J">J. Golm</a>, <a href="/search/hep-ex?searchtype=author&query=Irastorza%2C+I+G">I. G. Irastorza</a>, <a href="/search/hep-ex?searchtype=author&query=Guerrero%2C+A+J+L">A. J. Lozano Guerrero</a>, <a href="/search/hep-ex?searchtype=author&query=Garay%2C+C+P">C. Penya Garay</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2107.03137v4-abstract-short" style="display: inline;"> The electromagnetic coupling axion-photon in a microwave cavity is revisited with the Boundary Integral - Resonant Mode Expansion (BI-RME) 3D technique. Such full-wave modal technique has been applied for the rigorous analysis of the excitation of a microwave cavity with an axion field. In this scenario, the electromagnetic field generated by the axion-photon coupling can be assumed to be driven b… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.03137v4-abstract-full').style.display = 'inline'; document.getElementById('2107.03137v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2107.03137v4-abstract-full" style="display: none;"> The electromagnetic coupling axion-photon in a microwave cavity is revisited with the Boundary Integral - Resonant Mode Expansion (BI-RME) 3D technique. Such full-wave modal technique has been applied for the rigorous analysis of the excitation of a microwave cavity with an axion field. In this scenario, the electromagnetic field generated by the axion-photon coupling can be assumed to be driven by equivalent electrical charge and current densities. These densities have been inserted in the general BI-RME 3D equations, which express the RF electromagnetic field existing within a cavity as an integral involving the Dyadic Green functions of the cavity (under Coulomb gauge) as well as such densities. This method is able to take into account any arbitrary spatial and temporal variation of both magnitude and phase of the axion field. Next, we have obtained a simple network driven by the axion current source, which represents the coupling between the axion field and the resonant modes of the cavity. With this approach, it is possible to calculate the extracted and dissipated RF power as a function of frequency along a broad band and without Cauchy-Lorentz approximations, obtaining the spectrum of the electromagnetic field generated in the cavity, and dealing with modes relatively close to the axion resonant mode. Moreover, with this technique we have a complete knowledge of the signal extracted from the cavity, not only in magnitude but also in phase. This can be an interesting issue for future analysis where the axion phase is an important parameter. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.03137v4-abstract-full').style.display = 'none'; document.getElementById('2107.03137v4-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 April, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">37 pages, 14 figures, 40 references</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physics of the Dark Universe 36 (2022) 101001 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2104.13798">arXiv:2104.13798</a> <span> [<a href="https://arxiv.org/pdf/2104.13798">pdf</a>, <a href="https://arxiv.org/format/2104.13798">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP10(2021)075">10.1007/JHEP10(2021)075 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First results of the CAST-RADES haloscope search for axions at 34.67 $渭$eV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Melc%C3%B3n%2C+A+%C3%81">A. 脕lvarez Melc贸n</a>, <a href="/search/hep-ex?searchtype=author&query=Cuendis%2C+S+A">S. Arguedas Cuendis</a>, <a href="/search/hep-ex?searchtype=author&query=Baier%2C+J">J. Baier</a>, <a href="/search/hep-ex?searchtype=author&query=Barth%2C+K">K. Barth</a>, <a href="/search/hep-ex?searchtype=author&query=Br%C3%A4uniger%2C+H">H. Br盲uniger</a>, <a href="/search/hep-ex?searchtype=author&query=Calatroni%2C+S">S. Calatroni</a>, <a href="/search/hep-ex?searchtype=author&query=Cantatore%2C+G">G. Cantatore</a>, <a href="/search/hep-ex?searchtype=author&query=Caspers%2C+F">F. Caspers</a>, <a href="/search/hep-ex?searchtype=author&query=Castel%2C+J+F">J. F Castel</a>, <a href="/search/hep-ex?searchtype=author&query=Cetin%2C+S+A">S. A. Cetin</a>, <a href="/search/hep-ex?searchtype=author&query=Cogollos%2C+C">C. Cogollos</a>, <a href="/search/hep-ex?searchtype=author&query=Dafni%2C+T">T. Dafni</a>, <a href="/search/hep-ex?searchtype=author&query=Davenport%2C+M">M. Davenport</a>, <a href="/search/hep-ex?searchtype=author&query=Dermenev%2C+A">A. Dermenev</a>, <a href="/search/hep-ex?searchtype=author&query=Desch%2C+K">K. Desch</a>, <a href="/search/hep-ex?searchtype=author&query=D%C3%ADaz-Morcillo%2C+A">A. D铆az-Morcillo</a>, <a href="/search/hep-ex?searchtype=author&query=D%C3%B6brich%2C+B">B. D枚brich</a>, <a href="/search/hep-ex?searchtype=author&query=Fischer%2C+H">H. Fischer</a>, <a href="/search/hep-ex?searchtype=author&query=Funk%2C+W">W. Funk</a>, <a href="/search/hep-ex?searchtype=author&query=Gallego%2C+J+D">J. D Gallego</a>, <a href="/search/hep-ex?searchtype=author&query=Barcel%C3%B3%2C+J+M+G">J. M Garc铆a Barcel贸</a>, <a href="/search/hep-ex?searchtype=author&query=Gardikiotis%2C+A">A. Gardikiotis</a>, <a href="/search/hep-ex?searchtype=author&query=Garza%2C+J">J. Garza</a>, <a href="/search/hep-ex?searchtype=author&query=Gimeno%2C+B">B. Gimeno</a>, <a href="/search/hep-ex?searchtype=author&query=Gninenko%2C+S">S. Gninenko</a> , et al. (34 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2104.13798v2-abstract-short" style="display: inline;"> We present results of the Relic Axion Dark-Matter Exploratory Setup (RADES), a detector which is part of the CERN Axion Solar Telescope (CAST), searching for axion dark matter in the 34.67$渭$eV mass range. A radio frequency cavity consisting of 5 sub-cavities coupled by inductive irises took physics data inside the CAST dipole magnet for the first time using this filter-like haloscope geometry. An… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.13798v2-abstract-full').style.display = 'inline'; document.getElementById('2104.13798v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2104.13798v2-abstract-full" style="display: none;"> We present results of the Relic Axion Dark-Matter Exploratory Setup (RADES), a detector which is part of the CERN Axion Solar Telescope (CAST), searching for axion dark matter in the 34.67$渭$eV mass range. A radio frequency cavity consisting of 5 sub-cavities coupled by inductive irises took physics data inside the CAST dipole magnet for the first time using this filter-like haloscope geometry. An exclusion limit with a 95% credibility level on the axion-photon coupling constant of g$_{a纬}\gtrsim 4\times10^{-13} \text{GeV}^{-1}$ over a mass range of 34.6738 $渭$eV < $m_a$ < 34.6771 $渭$eV is set. This constitutes a significant improvement over the current strongest limit set by CAST at this mass and is at the same time one of the most sensitive direct searches for an axion dark matter candidate above the mass of 25 $渭$eV. The results also demonstrate the feasibility of exploring a wider mass range around the value probed by CAST-RADES in this work using similar coherent resonant cavities. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.13798v2-abstract-full').style.display = 'none'; document.getElementById('2104.13798v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">14 pages, 9 figures. Accepted for publication in JHEP. Minor changes done compared to the previous version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2021-070 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J. High Energ. Phys. 2021, 75 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2002.07639">arXiv:2002.07639</a> <span> [<a href="https://arxiv.org/pdf/2002.07639">pdf</a>, <a href="https://arxiv.org/format/2002.07639">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> Scalable haloscopes for axion dark matter detection in the 30$渭$eV range with RADES </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Melc%C3%B3n%2C+A+%C3%81">A. 脕lvarez Melc贸n</a>, <a href="/search/hep-ex?searchtype=author&query=Cuendis%2C+S+A">S. Arguedas Cuendis</a>, <a href="/search/hep-ex?searchtype=author&query=Cogollos%2C+C">C. Cogollos</a>, <a href="/search/hep-ex?searchtype=author&query=D%C3%ADaz-Morcillo%2C+A">A. D铆az-Morcillo</a>, <a href="/search/hep-ex?searchtype=author&query=D%C3%B6brich%2C+B">B. D枚brich</a>, <a href="/search/hep-ex?searchtype=author&query=Gallego%2C+J+D">J. D. Gallego</a>, <a href="/search/hep-ex?searchtype=author&query=Barcel%C3%B3%2C+J+M+G">J. M. Garc铆a Barcel贸</a>, <a href="/search/hep-ex?searchtype=author&query=Gimeno%2C+B">B. Gimeno</a>, <a href="/search/hep-ex?searchtype=author&query=Golm%2C+J">J. Golm</a>, <a href="/search/hep-ex?searchtype=author&query=Irastorza%2C+I+G">I. G. Irastorza</a>, <a href="/search/hep-ex?searchtype=author&query=Lozano-Guerrero%2C+A+J">A. J. Lozano-Guerrero</a>, <a href="/search/hep-ex?searchtype=author&query=Malbrunot%2C+C">C. Malbrunot</a>, <a href="/search/hep-ex?searchtype=author&query=Millar%2C+A">A. Millar</a>, <a href="/search/hep-ex?searchtype=author&query=Navarro%2C+P">P. Navarro</a>, <a href="/search/hep-ex?searchtype=author&query=Garay%2C+C+P">C. Pe帽a Garay</a>, <a href="/search/hep-ex?searchtype=author&query=Redondo%2C+J">J. Redondo</a>, <a href="/search/hep-ex?searchtype=author&query=Wuensch%2C+W">W. Wuensch</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2002.07639v3-abstract-short" style="display: inline;"> RADES (Relic Axion Detector Exploratory Setup) is a project with the goal of directly searching for axion dark matter above the $30 渭$eV scale employing custom-made microwave filters in magnetic dipole fields. Currently RADES is taking data at the LHC dipole of the CAST experiment. In the long term, the RADES cavities are envisioned to take data in the (baby)-IAXO magnet. In this article we report… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2002.07639v3-abstract-full').style.display = 'inline'; document.getElementById('2002.07639v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2002.07639v3-abstract-full" style="display: none;"> RADES (Relic Axion Detector Exploratory Setup) is a project with the goal of directly searching for axion dark matter above the $30 渭$eV scale employing custom-made microwave filters in magnetic dipole fields. Currently RADES is taking data at the LHC dipole of the CAST experiment. In the long term, the RADES cavities are envisioned to take data in the (baby)-IAXO magnet. In this article we report on the modelling, building and characterisation of an optimised microwave-filter design with alternating irises that exploits maximal coupling to axions while being scalable in length without suffering from mode-mixing. We develop the mathematical formalism and theoretical study which justifies the performance of the chosen design. We also point towards the applicability of this formalism to optimise the MADMAX dielectric haloscopes. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2002.07639v3-abstract-full').style.display = 'none'; document.getElementById('2002.07639v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 June, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 February, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">27 pages, 16 figures, v3: expanded sensitivity discussion, version accepted for publication in JHEP</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> NORDITA-2020-010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1903.04323">arXiv:1903.04323</a> <span> [<a href="https://arxiv.org/pdf/1903.04323">pdf</a>, <a href="https://arxiv.org/format/1903.04323">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> The 3 cavity prototypes of RADES, an axion detector using microwave filters at CAST </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Cuendis%2C+S+A">S. Arguedas Cuendis</a>, <a href="/search/hep-ex?searchtype=author&query=Melc%C3%B3n%2C+A+%C3%81">A. 脕lvarez Melc贸n</a>, <a href="/search/hep-ex?searchtype=author&query=Cogollos%2C+C">C. Cogollos</a>, <a href="/search/hep-ex?searchtype=author&query=D%C3%ADaz-Morcillo%2C+A">A. D铆az-Morcillo</a>, <a href="/search/hep-ex?searchtype=author&query=D%C3%B6brich%2C+B">B. D枚brich</a>, <a href="/search/hep-ex?searchtype=author&query=Gallego%2C+J+D">J. D. Gallego</a>, <a href="/search/hep-ex?searchtype=author&query=Gimeno%2C+B">B. Gimeno</a>, <a href="/search/hep-ex?searchtype=author&query=Irastorza%2C+I+G">I. G. Irastorza</a>, <a href="/search/hep-ex?searchtype=author&query=Lozano-Guerrero%2C+A+J">A. J. Lozano-Guerrero</a>, <a href="/search/hep-ex?searchtype=author&query=Malbrunot%2C+C">C. Malbrunot</a>, <a href="/search/hep-ex?searchtype=author&query=Navarro%2C+P">P. Navarro</a>, <a href="/search/hep-ex?searchtype=author&query=Garay%2C+C+P">C. Pe帽a Garay</a>, <a href="/search/hep-ex?searchtype=author&query=Redondo%2C+J">J. Redondo</a>, <a href="/search/hep-ex?searchtype=author&query=Vafeiadis%2C+T">T. Vafeiadis</a>, <a href="/search/hep-ex?searchtype=author&query=Wuensch%2C+W">W. Wuensch</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1903.04323v1-abstract-short" style="display: inline;"> The Relic Axion Detector Experimental Setup (RADES) is an axion search project that uses a microwave filter as resonator for Dark Matter conversion. The main focus of this publication is the description of the 3 different cavity prototypes of RADES. The result of the first tests of one of the prototypes is also presented. The filters consist of 5 or 6 stainless steel sub-cavities joined by rectang… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1903.04323v1-abstract-full').style.display = 'inline'; document.getElementById('1903.04323v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1903.04323v1-abstract-full" style="display: none;"> The Relic Axion Detector Experimental Setup (RADES) is an axion search project that uses a microwave filter as resonator for Dark Matter conversion. The main focus of this publication is the description of the 3 different cavity prototypes of RADES. The result of the first tests of one of the prototypes is also presented. The filters consist of 5 or 6 stainless steel sub-cavities joined by rectangular irises. The size of the sub-cavities determines the working frequency, the amount of sub-cavities determine the working volume. The first cavity prototype was built in 2017 to work at a frequency of $\sim$ 8.4 GHz and it was placed at the 9 T CAST dipole magnet at CERN. Two more prototypes were designed and built in 2018. The aim of the new designs is to find and test the best cavity geometry in order to scale up in volume and to introduce an effective tuning mechanism. Our results demonstrate the promising potential of this type of filter to reach QCD axion sensitivity at X-Band frequencies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1903.04323v1-abstract-full').style.display = 'none'; document.getElementById('1903.04323v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 March, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Proceedings for the 3rd Axion Cavity and Detector Workshop, Livermore Valley Open Campus August 21-25th, 2018</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1803.01243">arXiv:1803.01243</a> <span> [<a href="https://arxiv.org/pdf/1803.01243">pdf</a>, <a href="https://arxiv.org/format/1803.01243">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1475-7516/2018/05/040">10.1088/1475-7516/2018/05/040 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Axion Searches with Microwave Filters: the RADES project </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Melc%C3%B3n%2C+A+%C3%81">Alejandro 脕lvarez Melc贸n</a>, <a href="/search/hep-ex?searchtype=author&query=Cuendis%2C+S+A">Sergio Arguedas Cuendis</a>, <a href="/search/hep-ex?searchtype=author&query=Cogollos%2C+C">Cristian Cogollos</a>, <a href="/search/hep-ex?searchtype=author&query=D%C3%ADaz-Morcillo%2C+A">Alejandro D铆az-Morcillo</a>, <a href="/search/hep-ex?searchtype=author&query=D%C3%B6brich%2C+B">Babette D枚brich</a>, <a href="/search/hep-ex?searchtype=author&query=Gallego%2C+J+D">Juan Daniel Gallego</a>, <a href="/search/hep-ex?searchtype=author&query=Gimeno%2C+B">Benito Gimeno</a>, <a href="/search/hep-ex?searchtype=author&query=Irastorza%2C+I+G">Igor G. Irastorza</a>, <a href="/search/hep-ex?searchtype=author&query=Lozano-Guerrero%2C+A+J">Antonio Jos茅 Lozano-Guerrero</a>, <a href="/search/hep-ex?searchtype=author&query=Malbrunot%2C+C">Chlo茅 Malbrunot</a>, <a href="/search/hep-ex?searchtype=author&query=Navarro%2C+P">Pablo Navarro</a>, <a href="/search/hep-ex?searchtype=author&query=Garay%2C+C+P">Carlos Pe帽a Garay</a>, <a href="/search/hep-ex?searchtype=author&query=Redondo%2C+J">Javier Redondo</a>, <a href="/search/hep-ex?searchtype=author&query=Vafeiadis%2C+T">Theodoros Vafeiadis</a>, <a href="/search/hep-ex?searchtype=author&query=Wuensch%2C+W">Walter Wuensch</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1803.01243v2-abstract-short" style="display: inline;"> We propose, design and construct a variant of the conventional axion haloscope concept that could be competitive in the search for dark matter axions of masses in the decade 10-100 $渭$eV. Theses masses are located somewhat above the mass range in which existing experiments have reached sensitivity to benchmark QCD axion models. Our haloscope consists of an array of small microwave cavities connect… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.01243v2-abstract-full').style.display = 'inline'; document.getElementById('1803.01243v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1803.01243v2-abstract-full" style="display: none;"> We propose, design and construct a variant of the conventional axion haloscope concept that could be competitive in the search for dark matter axions of masses in the decade 10-100 $渭$eV. Theses masses are located somewhat above the mass range in which existing experiments have reached sensitivity to benchmark QCD axion models. Our haloscope consists of an array of small microwave cavities connected by rectangular irises, in an arrangement commonly used in radio-frequency filters. The size of the unit cavity determines the main resonant frequency, while the possibility to connect a {large} number of cavities allows to reach large detection volumes. We develop the theoretical framework of the detection concept, and present design prescriptions to optimize detection capabilities. We describe the design and realization of a first small-scale prototype of this concept, called Relic Axion Detector Exploratory Setup (RADES). It consists of a copper-coated stainless steel five-cavities microwave filter with the detecting mode operating at around 8.4 GHz. This structure has been electromagnetically characterized at 2 K and 298 K, and it is now placed in ultra-high vacuum in one of the twin-bores of the 9 T CAST dipole magnet at CERN. We describe the data acquisition system developed for relic axion detection, and present preliminary results of the electromagnetic properties of the microwave filter, which show the potential of filters to reach QCD axion window sensitivity at X-band frequencies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.01243v2-abstract-full').style.display = 'none'; document.getElementById('1803.01243v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 May, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 March, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">approved for publication in JCAP, version after referee comments</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> MPP-2018-18 </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 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