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<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/2406.15422">arXiv:2406.15422</a> <span> [<a href="https://arxiv.org/pdf/2406.15422">pdf</a>, <a href="https://arxiv.org/format/2406.15422">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Fluorescence Imaging of Individual Ions and Molecules in Pressurized Noble Gases for Barium Tagging in $^{136}$Xe </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=NEXT+Collaboration"> NEXT Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Byrnes%2C+N">N. Byrnes</a>, <a href="/search/nucl-ex?searchtype=author&query=Dey%2C+E">E. Dey</a>, <a href="/search/nucl-ex?searchtype=author&query=Foss%2C+F+W">F. W. Foss</a>, <a href="/search/nucl-ex?searchtype=author&query=Jones%2C+B+J+P">B. J. P. Jones</a>, <a href="/search/nucl-ex?searchtype=author&query=Madigan%2C+R">R. Madigan</a>, <a href="/search/nucl-ex?searchtype=author&query=McDonald%2C+A">A. McDonald</a>, <a href="/search/nucl-ex?searchtype=author&query=Miller%2C+R+L">R. L. Miller</a>, <a href="/search/nucl-ex?searchtype=author&query=Navarro%2C+K+E">K. E. Navarro</a>, <a href="/search/nucl-ex?searchtype=author&query=Norman%2C+L+R">L. R. Norman</a>, <a href="/search/nucl-ex?searchtype=author&query=Nygren%2C+D+R">D. R. Nygren</a>, <a href="/search/nucl-ex?searchtype=author&query=Adams%2C+C">C. Adams</a>, <a href="/search/nucl-ex?searchtype=author&query=Almaz%C3%A1n%2C+H">H. Almaz谩n</a>, <a href="/search/nucl-ex?searchtype=author&query=%C3%81lvarez%2C+V">V. 脕lvarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparicio%2C+B">B. Aparicio</a>, <a href="/search/nucl-ex?searchtype=author&query=Aranburu%2C+A+I">A. I. Aranburu</a>, <a href="/search/nucl-ex?searchtype=author&query=Arazi%2C+L">L. Arazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Auria-Luna%2C+F">F. Auria-Luna</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayet%2C+S">S. Ayet</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Barcelon%2C+J+E">J. E. Barcelon</a>, <a href="/search/nucl-ex?searchtype=author&query=Bailey%2C+K">K. Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Ballester%2C+F">F. Ballester</a>, <a href="/search/nucl-ex?searchtype=author&query=del+Barrio-Torregrosa%2C+M">M. del Barrio-Torregrosa</a> , et al. (90 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="2406.15422v1-abstract-short" style="display: inline;"> The imaging of individual Ba$^{2+}$ ions in high pressure xenon gas is one possible way to attain background-free sensitivity to neutrinoless double beta decay and hence establish the Majorana nature of the neutrino. In this paper we demonstrate selective single Ba$^{2+}$ ion imaging inside a high-pressure xenon gas environment. Ba$^{2+}$ ions chelated with molecular chemosensors are resolved at t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.15422v1-abstract-full').style.display = 'inline'; document.getElementById('2406.15422v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.15422v1-abstract-full" style="display: none;"> The imaging of individual Ba$^{2+}$ ions in high pressure xenon gas is one possible way to attain background-free sensitivity to neutrinoless double beta decay and hence establish the Majorana nature of the neutrino. In this paper we demonstrate selective single Ba$^{2+}$ ion imaging inside a high-pressure xenon gas environment. Ba$^{2+}$ ions chelated with molecular chemosensors are resolved at the gas-solid interface using a diffraction-limited imaging system with scan area of 1$\times$1~cm$^2$ located inside 10~bar of xenon gas. This new form of microscopy represents an important enabling step in the development of barium tagging for neutrinoless double beta decay searches in $^{136}$Xe, as well as a new tool for studying the photophysics of fluorescent molecules and chemosensors at the solid-gas interface. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.15422v1-abstract-full').style.display = 'none'; document.getElementById('2406.15422v1-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> 20 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2305.09435">arXiv:2305.09435</a> <span> [<a href="https://arxiv.org/pdf/2305.09435">pdf</a>, <a href="https://arxiv.org/format/2305.09435">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey 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 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/JHEP09(2023)190">10.1007/JHEP09(2023)190 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Demonstration of neutrinoless double beta decay searches in gaseous xenon with NEXT </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=NEXT+Collaboration"> NEXT Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Novella%2C+P">P. Novella</a>, <a href="/search/nucl-ex?searchtype=author&query=Sorel%2C+M">M. Sorel</a>, <a href="/search/nucl-ex?searchtype=author&query=Us%C3%B3n%2C+A">A. Us贸n</a>, <a href="/search/nucl-ex?searchtype=author&query=Adams%2C+C">C. Adams</a>, <a href="/search/nucl-ex?searchtype=author&query=Almaz%C3%A1n%2C+H">H. Almaz谩n</a>, <a href="/search/nucl-ex?searchtype=author&query=%C3%81lvarez%2C+V">V. 脕lvarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparicio%2C+B">B. Aparicio</a>, <a href="/search/nucl-ex?searchtype=author&query=Aranburu%2C+A+I">A. I. Aranburu</a>, <a href="/search/nucl-ex?searchtype=author&query=Arazi%2C+L">L. Arazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Auria-Luna%2C+F">F. Auria-Luna</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayet%2C+S">S. Ayet</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bailey%2C+K">K. Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Ballester%2C+F">F. Ballester</a>, <a href="/search/nucl-ex?searchtype=author&query=del+Barrio-Torregrosa%2C+M">M. del Barrio-Torregrosa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bayo%2C+A">A. Bayo</a>, <a href="/search/nucl-ex?searchtype=author&query=Benlloch-Rodr%C3%ADguez%2C+J+M">J. M. Benlloch-Rodr铆guez</a>, <a href="/search/nucl-ex?searchtype=author&query=Borges%2C+F+I+G+M">F. I. G. M. Borges</a>, <a href="/search/nucl-ex?searchtype=author&query=Bounasser%2C+S">S. Bounasser</a>, <a href="/search/nucl-ex?searchtype=author&query=Byrnes%2C+N">N. Byrnes</a>, <a href="/search/nucl-ex?searchtype=author&query=C%C3%A1rcel%2C+S">S. C谩rcel</a>, <a href="/search/nucl-ex?searchtype=author&query=Carri%C3%B3n%2C+J+V">J. V. Carri贸n</a>, <a href="/search/nucl-ex?searchtype=author&query=Cebri%C3%A1n%2C+S">S. Cebri谩n</a> , et al. (90 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="2305.09435v4-abstract-short" style="display: inline;"> The NEXT experiment aims at the sensitive search of the neutrinoless double beta decay in $^{136}$Xe, using high-pressure gas electroluminescent time projection chambers. The NEXT-White detector is the first radiopure demonstrator of this technology, operated in the Laboratorio Subterr谩neo de Canfranc. Achieving an energy resolution of 1% FWHM at 2.6 MeV and further background rejection by means o… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.09435v4-abstract-full').style.display = 'inline'; document.getElementById('2305.09435v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2305.09435v4-abstract-full" style="display: none;"> The NEXT experiment aims at the sensitive search of the neutrinoless double beta decay in $^{136}$Xe, using high-pressure gas electroluminescent time projection chambers. The NEXT-White detector is the first radiopure demonstrator of this technology, operated in the Laboratorio Subterr谩neo de Canfranc. Achieving an energy resolution of 1% FWHM at 2.6 MeV and further background rejection by means of the topology of the reconstructed tracks, NEXT-White has been exploited beyond its original goals in order to perform a neutrinoless double beta decay search. The analysis considers the combination of 271.6 days of $^{136}$Xe-enriched data and 208.9 days of $^{136}$Xe-depleted data. A detailed background modeling and measurement has been developed, ensuring the time stability of the radiogenic and cosmogenic contributions across both data samples. Limits to the neutrinoless mode are obtained in two alternative analyses: a background-model-dependent approach and a novel direct background-subtraction technique, offering results with small dependence on the background model assumptions. With a fiducial mass of only 3.50$\pm$0.01 kg of $^{136}$Xe-enriched xenon, 90% C.L. lower limits to the neutrinoless double beta decay are found in the T$_{1/2}^{0谓}>5.5\times10^{23}-1.3\times10^{24}$ yr range, depending on the method. The presented techniques stand as a proof-of-concept for the searches to be implemented with larger NEXT detectors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.09435v4-abstract-full').style.display = 'none'; document.getElementById('2305.09435v4-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 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 09 (2023) 190 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2303.01522">arXiv:2303.01522</a> <span> [<a href="https://arxiv.org/pdf/2303.01522">pdf</a>, <a href="https://arxiv.org/format/2303.01522">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-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/10.1088/1748-0221/18/07/P07044">10.1088/1748-0221/18/07/P07044 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A Compact Dication Source for Ba$^{2+}$ Tagging and Heavy Metal Ion Sensor Development </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Navarro%2C+K+E">K. E. Navarro</a>, <a href="/search/nucl-ex?searchtype=author&query=Jones%2C+B+J+P">B. J. P. Jones</a>, <a href="/search/nucl-ex?searchtype=author&query=Baeza-Rubio%2C+J">J. Baeza-Rubio</a>, <a href="/search/nucl-ex?searchtype=author&query=Boyd%2C+M">M. Boyd</a>, <a href="/search/nucl-ex?searchtype=author&query=Denisenko%2C+A+A">A. A. Denisenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Foss%2C+F+W">F. W. Foss</a>, <a href="/search/nucl-ex?searchtype=author&query=Giri%2C+S">S. Giri</a>, <a href="/search/nucl-ex?searchtype=author&query=Miller%2C+R">R. Miller</a>, <a href="/search/nucl-ex?searchtype=author&query=Nygren%2C+D+R">D. R. Nygren</a>, <a href="/search/nucl-ex?searchtype=author&query=Tiscareno%2C+M+R">M. R. Tiscareno</a>, <a href="/search/nucl-ex?searchtype=author&query=Samaniego%2C+F+J">F. J. Samaniego</a>, <a href="/search/nucl-ex?searchtype=author&query=Stogsdill%2C+K">K. Stogsdill</a>, <a href="/search/nucl-ex?searchtype=author&query=Adams%2C+C">C. Adams</a>, <a href="/search/nucl-ex?searchtype=author&query=Almaz%C3%A1n%2C+H">H. Almaz谩n</a>, <a href="/search/nucl-ex?searchtype=author&query=%C3%81lvarez%2C+V">V. 脕lvarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparicio%2C+B">B. Aparicio</a>, <a href="/search/nucl-ex?searchtype=author&query=Aranburu%2C+A+I">A. I. Aranburu</a>, <a href="/search/nucl-ex?searchtype=author&query=Arazi%2C+L">L. Arazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayet%2C+S">S. Ayet</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bailey%2C+K">K. Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Ballester%2C+F">F. Ballester</a>, <a href="/search/nucl-ex?searchtype=author&query=Benlloch-Rodr%C3%ADguez%2C+J+M">J. M. Benlloch-Rodr铆guez</a>, <a href="/search/nucl-ex?searchtype=author&query=Borges%2C+F+I+G+M">F. I. G. M. Borges</a> , et al. (85 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="2303.01522v1-abstract-short" style="display: inline;"> We present a tunable metal ion beam that delivers controllable ion currents in the picoamp range for testing of dry-phase ion sensors. Ion beams are formed by sequential atomic evaporation and single or multiple electron impact ionization, followed by acceleration into a sensing region. Controllability of the ionic charge state is achieved through tuning of electrode potentials that influence the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.01522v1-abstract-full').style.display = 'inline'; document.getElementById('2303.01522v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.01522v1-abstract-full" style="display: none;"> We present a tunable metal ion beam that delivers controllable ion currents in the picoamp range for testing of dry-phase ion sensors. Ion beams are formed by sequential atomic evaporation and single or multiple electron impact ionization, followed by acceleration into a sensing region. Controllability of the ionic charge state is achieved through tuning of electrode potentials that influence the retention time in the ionization region. Barium, lead, and cobalt samples have been used to test the system, with ion currents identified and quantified using a quadrupole mass analyzer. Realization of a clean $\mathrm{Ba^{2+}}$ ion beam within a bench-top system represents an important technical advance toward the development and characterization of barium tagging systems for neutrinoless double beta decay searches in xenon gas. This system also provides a testbed for investigation of novel ion sensing methodologies for environmental assay applications, with dication beams of Pb$^{2+}$ and Cd$^{2+}$ also demonstrated for this purpose. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.01522v1-abstract-full').style.display = 'none'; document.getElementById('2303.01522v1-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> 2 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2111.11091">arXiv:2111.11091</a> <span> [<a href="https://arxiv.org/pdf/2111.11091">pdf</a>, <a href="https://arxiv.org/format/2111.11091">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey 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 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/10.1103/PhysRevC.105.055501">10.1103/PhysRevC.105.055501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the ${}^{136}$Xe two-neutrino double beta decay half-life via direct background subtraction in NEXT </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=NEXT+Collaboration"> NEXT Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Novella%2C+P">P. Novella</a>, <a href="/search/nucl-ex?searchtype=author&query=Sorel%2C+M">M. Sorel</a>, <a href="/search/nucl-ex?searchtype=author&query=Us%C3%B3n%2C+A">A. Us贸n</a>, <a href="/search/nucl-ex?searchtype=author&query=Adams%2C+C">C. Adams</a>, <a href="/search/nucl-ex?searchtype=author&query=Almaz%C3%A1n%2C+H">H. Almaz谩n</a>, <a href="/search/nucl-ex?searchtype=author&query=%C3%81lvarez%2C+V">V. 脕lvarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparicio%2C+B">B. Aparicio</a>, <a href="/search/nucl-ex?searchtype=author&query=Aranburu%2C+A+I">A. I. Aranburu</a>, <a href="/search/nucl-ex?searchtype=author&query=Arazi%2C+L">L. Arazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayet%2C+S">S. Ayet</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bailey%2C+K">K. Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Ballester%2C+F">F. Ballester</a>, <a href="/search/nucl-ex?searchtype=author&query=Benlloch-Rodr%C3%ADguez%2C+J+M">J. M. Benlloch-Rodr铆guez</a>, <a href="/search/nucl-ex?searchtype=author&query=Borges%2C+F+I+G+M">F. I. G. M. Borges</a>, <a href="/search/nucl-ex?searchtype=author&query=Bounasser%2C+S">S. Bounasser</a>, <a href="/search/nucl-ex?searchtype=author&query=Byrnes%2C+N">N. Byrnes</a>, <a href="/search/nucl-ex?searchtype=author&query=C%C3%A1rcel%2C+S">S. C谩rcel</a>, <a href="/search/nucl-ex?searchtype=author&query=Carri%C3%B3n%2C+J+V">J. V. Carri贸n</a>, <a href="/search/nucl-ex?searchtype=author&query=Cebri%C3%A1n%2C+S">S. Cebri谩n</a>, <a href="/search/nucl-ex?searchtype=author&query=Church%2C+E">E. Church</a>, <a href="/search/nucl-ex?searchtype=author&query=Conde%2C+C+A+N">C. A. N. Conde</a>, <a href="/search/nucl-ex?searchtype=author&query=Contreras%2C+T">T. Contreras</a> , et al. (85 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="2111.11091v3-abstract-short" style="display: inline;"> We report a measurement of the half-life of the ${}^{136}$Xe two-neutrino double beta decay performed with a novel direct background subtraction technique. The analysis relies on the data collected with the NEXT-White detector operated with ${}^{136}$Xe-enriched and ${}^{136}$Xe-depleted xenon, as well as on the topology of double-electron tracks. With a fiducial mass of only 3.5 kg of Xe, a half-… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.11091v3-abstract-full').style.display = 'inline'; document.getElementById('2111.11091v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.11091v3-abstract-full" style="display: none;"> We report a measurement of the half-life of the ${}^{136}$Xe two-neutrino double beta decay performed with a novel direct background subtraction technique. The analysis relies on the data collected with the NEXT-White detector operated with ${}^{136}$Xe-enriched and ${}^{136}$Xe-depleted xenon, as well as on the topology of double-electron tracks. With a fiducial mass of only 3.5 kg of Xe, a half-life of $2.34^{+0.80}_{-0.46}\textrm{(stat)}^{+0.30}_{-0.17}\textrm{(sys)}\times10^{21}~\textrm{yr}$ is derived from the background-subtracted energy spectrum. The presented technique demonstrates the feasibility of unique background-model-independent neutrinoless double beta decay searches. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.11091v3-abstract-full').style.display = 'none'; document.getElementById('2111.11091v3-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 May, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 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">9 pages, 7 figures, and 1 appendix</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 105, 055501 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2109.05902">arXiv:2109.05902</a> <span> [<a href="https://arxiv.org/pdf/2109.05902">pdf</a>, <a href="https://arxiv.org/format/2109.05902">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="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> The Dynamics of Ions on Phased Radio-frequency Carpets in High Pressure Gases and Application for Barium Tagging in Xenon Gas Time Projection Chambers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=NEXT+Collaboration"> NEXT Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Jones%2C+B+J+P">B. J. P. Jones</a>, <a href="/search/nucl-ex?searchtype=author&query=Raymond%2C+A">A. Raymond</a>, <a href="/search/nucl-ex?searchtype=author&query=Woodruff%2C+K">K. Woodruff</a>, <a href="/search/nucl-ex?searchtype=author&query=Byrnes%2C+N">N. Byrnes</a>, <a href="/search/nucl-ex?searchtype=author&query=Denisenko%2C+A+A">A. A. Denisenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Foss%2C+F+W">F. W. Foss</a>, <a href="/search/nucl-ex?searchtype=author&query=Navarro%2C+K">K. Navarro</a>, <a href="/search/nucl-ex?searchtype=author&query=Nygren%2C+D+R">D. R. Nygren</a>, <a href="/search/nucl-ex?searchtype=author&query=Vuong%2C+T+T">T. T. Vuong</a>, <a href="/search/nucl-ex?searchtype=author&query=Adams%2C+C">C. Adams</a>, <a href="/search/nucl-ex?searchtype=author&query=Almaz%C3%A1n%2C+H">H. Almaz谩n</a>, <a href="/search/nucl-ex?searchtype=author&query=%C3%81lvarez%2C+V">V. 脕lvarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Aparicio%2C+B">B. Aparicio</a>, <a href="/search/nucl-ex?searchtype=author&query=Aranburu%2C+A+I">A. I. Aranburu</a>, <a href="/search/nucl-ex?searchtype=author&query=Arazi%2C+L">L. Arazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayet%2C+S">S. Ayet</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bailey%2C+K">K. Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Ballester%2C+F">F. Ballester</a>, <a href="/search/nucl-ex?searchtype=author&query=Benlloch-Rodr%C3%ADguez%2C+J+M">J. M. Benlloch-Rodr铆guez</a>, <a href="/search/nucl-ex?searchtype=author&query=Borges%2C+F+I+G+M">F. I. G. M. Borges</a>, <a href="/search/nucl-ex?searchtype=author&query=Bounasser%2C+S">S. Bounasser</a>, <a href="/search/nucl-ex?searchtype=author&query=C%C3%A1rcel%2C+S">S. C谩rcel</a> , et al. (85 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="2109.05902v2-abstract-short" style="display: inline;"> Radio-frequency (RF) carpets with ultra-fine pitches are examined for ion transport in gases at atmospheric pressures and above. We develop new analytic and computational methods for modeling RF ion transport at densities where dynamics are strongly influenced by buffer gas collisions. An analytic description of levitating and sweeping forces from phased arrays is obtained, then thermodynamic and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2109.05902v2-abstract-full').style.display = 'inline'; document.getElementById('2109.05902v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2109.05902v2-abstract-full" style="display: none;"> Radio-frequency (RF) carpets with ultra-fine pitches are examined for ion transport in gases at atmospheric pressures and above. We develop new analytic and computational methods for modeling RF ion transport at densities where dynamics are strongly influenced by buffer gas collisions. An analytic description of levitating and sweeping forces from phased arrays is obtained, then thermodynamic and kinetic principles are used to calculate ion loss rates in the presence of collisions. This methodology is validated against detailed microscopic SIMION simulations. We then explore a parameter space of special interest for neutrinoless double beta decay experiments: transport of barium ions in xenon at pressures from 1 to 10 bar. Our computations account for molecular ion formation and pressure dependent mobility as well as finite temperature effects. We discuss the challenges associated with achieving suitable operating conditions, which lie beyond the capabilities of existing devices, using presently available or near-future manufacturing techniques. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2109.05902v2-abstract-full').style.display = 'none'; document.getElementById('2109.05902v2-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> 29 September, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 September, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">26 pages, 16 figures v2: author list update and pre-journal submission adjustments</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2006.07320">arXiv:2006.07320</a> <span> [<a href="https://arxiv.org/pdf/2006.07320">pdf</a>, <a href="https://arxiv.org/format/2006.07320">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="Nuclear Experiment">nucl-ex</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/10.1007/JHEP02(2021)203">10.1007/JHEP02(2021)203 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Sensitivity of the NEXT experiment to Xe-124 double electron capture </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Mart%C3%ADnez-Lema%2C+G">G. Mart铆nez-Lema</a>, <a href="/search/nucl-ex?searchtype=author&query=Mart%C3%ADnez-Vara%2C+M">M. Mart铆nez-Vara</a>, <a href="/search/nucl-ex?searchtype=author&query=Sorel%2C+M">M. Sorel</a>, <a href="/search/nucl-ex?searchtype=author&query=Adams%2C+C">C. Adams</a>, <a href="/search/nucl-ex?searchtype=author&query=Alvarez%2C+V">V. Alvarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Arazi%2C+L">L. Arazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bailey%2C+K">K. Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Ballester%2C+F">F. Ballester</a>, <a href="/search/nucl-ex?searchtype=author&query=Benlloch-Rodr%C3%ADguez%2C+J+M">J. M. Benlloch-Rodr铆guez</a>, <a href="/search/nucl-ex?searchtype=author&query=Borges%2C+F+I+G+M">F. I. G. M. Borges</a>, <a href="/search/nucl-ex?searchtype=author&query=Byrnes%2C+N">N. Byrnes</a>, <a href="/search/nucl-ex?searchtype=author&query=C%C3%A1rcel%2C+S">S. C谩rcel</a>, <a href="/search/nucl-ex?searchtype=author&query=Carri%C3%B3n%2C+J+V">J. V. Carri贸n</a>, <a href="/search/nucl-ex?searchtype=author&query=Cebri%C3%A1n%2C+S">S. Cebri谩n</a>, <a href="/search/nucl-ex?searchtype=author&query=Church%2C+E">E. Church</a>, <a href="/search/nucl-ex?searchtype=author&query=Conde%2C+C+A+N">C. A. N. Conde</a>, <a href="/search/nucl-ex?searchtype=author&query=Contreras%2C+T">T. Contreras</a>, <a href="/search/nucl-ex?searchtype=author&query=D%C3%ADaz%2C+G">G. D铆az</a>, <a href="/search/nucl-ex?searchtype=author&query=D%C3%ADaz%2C+J">J. D铆az</a>, <a href="/search/nucl-ex?searchtype=author&query=Diesburg%2C+M">M. Diesburg</a>, <a href="/search/nucl-ex?searchtype=author&query=Escada%2C+J">J. Escada</a>, <a href="/search/nucl-ex?searchtype=author&query=Esteve%2C+R">R. Esteve</a>, <a href="/search/nucl-ex?searchtype=author&query=Felkai%2C+R">R. Felkai</a> , et al. (66 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="2006.07320v3-abstract-short" style="display: inline;"> Double electron capture by proton-rich nuclei is a second-order nuclear process analogous to double beta decay. Despite their similarities, the decay signature is quite different, potentially providing a new channel to measure the hypothesized neutrinoless mode of these decays. The Standard-Model-allowed two-neutrino double electron capture ($2谓ECEC$) has been predicted for a number of isotopes, b… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.07320v3-abstract-full').style.display = 'inline'; document.getElementById('2006.07320v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2006.07320v3-abstract-full" style="display: none;"> Double electron capture by proton-rich nuclei is a second-order nuclear process analogous to double beta decay. Despite their similarities, the decay signature is quite different, potentially providing a new channel to measure the hypothesized neutrinoless mode of these decays. The Standard-Model-allowed two-neutrino double electron capture ($2谓ECEC$) has been predicted for a number of isotopes, but only observed in $^{78}$Kr, $^{130}$Ba and, recently, $^{124}$Xe. The sensitivity to this decay establishes a benchmark for the ultimate experimental goal, namely the potential to discover also the lepton-number-violating neutrinoless version of this process, $0谓ECEC$. Here we report on the current sensitivity of the NEXT-White detector to $^{124}$Xe $2谓ECEC$ and on the extrapolation to NEXT-100. Using simulated data for the $2谓ECEC$ signal and real data from NEXT-White operated with $^{124}$Xe-depleted gas as background, we define an optimal event selection that maximizes the NEXT-White sensitivity. We estimate that, for NEXT-100 operated with xenon gas isotopically enriched with 1 kg of $^{124}$Xe and for a 5-year run, a sensitivity to the $2谓ECEC$ half-life of $6 \times 10^{22}$ y (at 90% confidence level) or better can be reached. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.07320v3-abstract-full').style.display = 'none'; document.getElementById('2006.07320v3-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> 15 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 June, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 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">23 pages, 13 figures</span> </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, 203 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.06467">arXiv:2005.06467</a> <span> [<a href="https://arxiv.org/pdf/2005.06467">pdf</a>, <a href="https://arxiv.org/format/2005.06467">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="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Sensitivity of a tonne-scale NEXT detector for neutrinoless double beta decay searches </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=NEXT+Collaboration"> NEXT Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adams%2C+C">C. Adams</a>, <a href="/search/nucl-ex?searchtype=author&query=%C3%81lvarez%2C+V">V. 脕lvarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Arazi%2C+L">L. Arazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bailey%2C+K">K. Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Ballester%2C+F">F. Ballester</a>, <a href="/search/nucl-ex?searchtype=author&query=Benlloch-Rodr%C3%ADguez%2C+J+M">J. M. Benlloch-Rodr铆guez</a>, <a href="/search/nucl-ex?searchtype=author&query=Borges%2C+F+I+G+M">F. I. G. M. Borges</a>, <a href="/search/nucl-ex?searchtype=author&query=Byrnes%2C+N">N. Byrnes</a>, <a href="/search/nucl-ex?searchtype=author&query=C%C3%A1rcel%2C+S">S. C谩rcel</a>, <a href="/search/nucl-ex?searchtype=author&query=Carri%C3%B3n%2C+J+V">J. V. Carri贸n</a>, <a href="/search/nucl-ex?searchtype=author&query=Cebri%C3%A1n%2C+S">S. Cebri谩n</a>, <a href="/search/nucl-ex?searchtype=author&query=Church%2C+E">E. Church</a>, <a href="/search/nucl-ex?searchtype=author&query=Conde%2C+C+A+N">C. A. N. Conde</a>, <a href="/search/nucl-ex?searchtype=author&query=Contreras%2C+T">T. Contreras</a>, <a href="/search/nucl-ex?searchtype=author&query=Denisenko%2C+A+A">A. A. Denisenko</a>, <a href="/search/nucl-ex?searchtype=author&query=D%C3%ADaz%2C+G">G. D铆az</a>, <a href="/search/nucl-ex?searchtype=author&query=D%C3%ADaz%2C+J">J. D铆az</a>, <a href="/search/nucl-ex?searchtype=author&query=Escada%2C+J">J. Escada</a>, <a href="/search/nucl-ex?searchtype=author&query=Esteve%2C+R">R. Esteve</a>, <a href="/search/nucl-ex?searchtype=author&query=Felkai%2C+R">R. Felkai</a>, <a href="/search/nucl-ex?searchtype=author&query=Fernandes%2C+L+M+P">L. M. P. Fernandes</a>, <a href="/search/nucl-ex?searchtype=author&query=Ferrario%2C+P">P. Ferrario</a> , et al. (74 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="2005.06467v2-abstract-short" style="display: inline;"> The Neutrino Experiment with a Xenon TPC (NEXT) searches for the neutrinoless double-beta decay of Xe-136 using high-pressure xenon gas TPCs with electroluminescent amplification. A scaled-up version of this technology with about 1 tonne of enriched xenon could reach in less than 5 years of operation a sensitivity to the half-life of neutrinoless double-beta decay decay better than 1E27 years, imp… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.06467v2-abstract-full').style.display = 'inline'; document.getElementById('2005.06467v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.06467v2-abstract-full" style="display: none;"> The Neutrino Experiment with a Xenon TPC (NEXT) searches for the neutrinoless double-beta decay of Xe-136 using high-pressure xenon gas TPCs with electroluminescent amplification. A scaled-up version of this technology with about 1 tonne of enriched xenon could reach in less than 5 years of operation a sensitivity to the half-life of neutrinoless double-beta decay decay better than 1E27 years, improving the current limits by at least one order of magnitude. This prediction is based on a well-understood background model dominated by radiogenic sources. The detector concept presented here represents a first step on a compelling path towards sensitivity to the parameter space defined by the inverted ordering of neutrino masses, and beyond. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.06467v2-abstract-full').style.display = 'none'; document.getElementById('2005.06467v2-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 February, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">22 pages, 11 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/1909.05860">arXiv:1909.05860</a> <span> [<a href="https://arxiv.org/pdf/1909.05860">pdf</a>, <a href="https://arxiv.org/format/1909.05860">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="Nuclear Experiment">nucl-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/10.1088/1748-0221/15/04/P04022">10.1088/1748-0221/15/04/P04022 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Radio Frequency and DC High Voltage Breakdown of High Pressure Helium, Argon, and Xenon </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Woodruff%2C+K">K. Woodruff</a>, <a href="/search/nucl-ex?searchtype=author&query=Baeza-Rubio%2C+J">J. Baeza-Rubio</a>, <a href="/search/nucl-ex?searchtype=author&query=Huerta%2C+D">D. Huerta</a>, <a href="/search/nucl-ex?searchtype=author&query=Jones%2C+B+J+P">B. J. P. Jones</a>, <a href="/search/nucl-ex?searchtype=author&query=McDonald%2C+A+D">A. D. McDonald</a>, <a href="/search/nucl-ex?searchtype=author&query=Norman%2C+L">L. Norman</a>, <a href="/search/nucl-ex?searchtype=author&query=Nygren%2C+D+R">D. R. Nygren</a>, <a href="/search/nucl-ex?searchtype=author&query=Adams%2C+C">C. Adams</a>, <a href="/search/nucl-ex?searchtype=author&query=%C3%81lvarez%2C+V">V. 脕lvarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Arazi%2C+L">L. Arazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bailey%2C+K">K. Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Ballester%2C+F">F. Ballester</a>, <a href="/search/nucl-ex?searchtype=author&query=Benlloch-Rodr%C3%ADguez%2C+J+M">J. M. Benlloch-Rodr铆guez</a>, <a href="/search/nucl-ex?searchtype=author&query=Borges%2C+F+I+G+M">F. I. G. M. Borges</a>, <a href="/search/nucl-ex?searchtype=author&query=Byrnes%2C+N+K">N. K. Byrnes</a>, <a href="/search/nucl-ex?searchtype=author&query=C%C3%A1rcel%2C+S">S. C谩rcel</a>, <a href="/search/nucl-ex?searchtype=author&query=Carri%C3%B3n%2C+J+V">J. V. Carri贸n</a>, <a href="/search/nucl-ex?searchtype=author&query=Cebri%C3%A1n%2C+S">S. Cebri谩n</a>, <a href="/search/nucl-ex?searchtype=author&query=Church%2C+E">E. Church</a>, <a href="/search/nucl-ex?searchtype=author&query=Conde%2C+C+A+N">C. A. N. Conde</a>, <a href="/search/nucl-ex?searchtype=author&query=Contreras%2C+T">T. Contreras</a>, <a href="/search/nucl-ex?searchtype=author&query=Denisenko%2C+A+A">A. A. Denisenko</a>, <a href="/search/nucl-ex?searchtype=author&query=D%C3%ADaz%2C+G">G. D铆az</a> , et al. (69 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="1909.05860v3-abstract-short" style="display: inline;"> Motivated by the possibility of guiding daughter ions from double beta decay events to single-ion sensors for barium tagging, the NEXT collaboration is developing a program of R&D to test radio frequency (RF) carpets for ion transport in high pressure xenon gas. This would require carpet functionality in regimes at higher pressures than have been previously reported, implying correspondingly large… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.05860v3-abstract-full').style.display = 'inline'; document.getElementById('1909.05860v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1909.05860v3-abstract-full" style="display: none;"> Motivated by the possibility of guiding daughter ions from double beta decay events to single-ion sensors for barium tagging, the NEXT collaboration is developing a program of R&D to test radio frequency (RF) carpets for ion transport in high pressure xenon gas. This would require carpet functionality in regimes at higher pressures than have been previously reported, implying correspondingly larger electrode voltages than in existing systems. This mode of operation appears plausible for contemporary RF-carpet geometries due to the higher predicted breakdown strength of high pressure xenon relative to low pressure helium, the working medium in most existing RF carpet devices. In this paper we present the first measurements of the high voltage dielectric strength of xenon gas at high pressure and at the relevant RF frequencies for ion transport (in the 10 MHz range), as well as new DC and RF measurements of the dielectric strengths of high pressure argon and helium gases at small gap sizes. We find breakdown voltages that are compatible with stable RF carpet operation given the gas, pressure, voltage, materials and geometry of interest. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.05860v3-abstract-full').style.display = 'none'; document.getElementById('1909.05860v3-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> 23 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 September, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2019. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1902.05544">arXiv:1902.05544</a> <span> [<a href="https://arxiv.org/pdf/1902.05544">pdf</a>, <a href="https://arxiv.org/format/1902.05544">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="Nuclear Experiment">nucl-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/10.1088/1748-0221/14/08/P08009">10.1088/1748-0221/14/08/P08009 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Electron Drift and Longitudinal Diffusion in High Pressure Xenon-Helium Gas Mixtures </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=McDonald%2C+A+D">A. D. McDonald</a>, <a href="/search/nucl-ex?searchtype=author&query=Woodruff%2C+K">K. Woodruff</a>, <a href="/search/nucl-ex?searchtype=author&query=Atoum%2C+B+A">B. Al Atoum</a>, <a href="/search/nucl-ex?searchtype=author&query=Gonz%C3%A1lez-D%C3%ADaz%2C+D">D. Gonz谩lez-D铆az</a>, <a href="/search/nucl-ex?searchtype=author&query=Jones%2C+B+J+P">B. J. P. Jones</a>, <a href="/search/nucl-ex?searchtype=author&query=Adams%2C+C">C. Adams</a>, <a href="/search/nucl-ex?searchtype=author&query=%C3%81lvarez%2C+V">V. 脕lvarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Arazi%2C+L">L. Arazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bailey%2C+K">K. Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Ballester%2C+F">F. Ballester</a>, <a href="/search/nucl-ex?searchtype=author&query=Benlloch-Rodr%C3%ADguez%2C+J+M">J. M. Benlloch-Rodr铆guez</a>, <a href="/search/nucl-ex?searchtype=author&query=Borges%2C+F+I+G+M">F. I. G. M. Borges</a>, <a href="/search/nucl-ex?searchtype=author&query=C%C3%A1rcel%2C+S">S. C谩rcel</a>, <a href="/search/nucl-ex?searchtype=author&query=Carri%C3%B3n%2C+J+V">J. V. Carri贸n</a>, <a href="/search/nucl-ex?searchtype=author&query=Cebri%C3%A1n%2C+S">S. Cebri谩n</a>, <a href="/search/nucl-ex?searchtype=author&query=Church%2C+E">E. Church</a>, <a href="/search/nucl-ex?searchtype=author&query=Conde%2C+C+A+N">C. A. N. Conde</a>, <a href="/search/nucl-ex?searchtype=author&query=D%C3%ADaz%2C+G">G. D铆az</a>, <a href="/search/nucl-ex?searchtype=author&query=D%C3%ADaz%2C+J">J. D铆az</a>, <a href="/search/nucl-ex?searchtype=author&query=Diesburg%2C+M">M. Diesburg</a>, <a href="/search/nucl-ex?searchtype=author&query=Escada%2C+J">J. Escada</a>, <a href="/search/nucl-ex?searchtype=author&query=Esteve%2C+R">R. Esteve</a>, <a href="/search/nucl-ex?searchtype=author&query=Felkai%2C+R">R. Felkai</a> , et al. (61 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="1902.05544v4-abstract-short" style="display: inline;"> We report new measurements of the drift velocity and longitudinal diffusion coefficients of electrons in pure xenon gas and in xenon-helium gas mixtures at 1-9 bar and electric field strengths of 50-300 V/cm. In pure xenon we find excellent agreement with world data at all $E/P$, for both drift velocity and diffusion coefficients. However, a larger value of the longitudinal diffusion coefficient t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1902.05544v4-abstract-full').style.display = 'inline'; document.getElementById('1902.05544v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1902.05544v4-abstract-full" style="display: none;"> We report new measurements of the drift velocity and longitudinal diffusion coefficients of electrons in pure xenon gas and in xenon-helium gas mixtures at 1-9 bar and electric field strengths of 50-300 V/cm. In pure xenon we find excellent agreement with world data at all $E/P$, for both drift velocity and diffusion coefficients. However, a larger value of the longitudinal diffusion coefficient than theoretical predictions is found at low $E/P$ in pure xenon, below the range of reduced fields usually probed by TPC experiments. A similar effect is observed in xenon-helium gas mixtures at somewhat larger $E/P$. Drift velocities in xenon-helium mixtures are found to be theoretically well predicted. Although longitudinal diffusion in xenon-helium mixtures is found to be larger than anticipated, extrapolation based on the measured longitudinal diffusion coefficients suggest that the use of helium additives to reduce transverse diffusion in xenon gas remains a promising prospect. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1902.05544v4-abstract-full').style.display = 'none'; document.getElementById('1902.05544v4-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> 26 June, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 February, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2019. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1810.00280">arXiv:1810.00280</a> <span> [<a href="https://arxiv.org/pdf/1810.00280">pdf</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 Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey 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="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> ABALONE Photosensors for the IceCube Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Ferenc%2C+D">Daniel Ferenc</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+A">Andrew Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Saylor%2C+C">Cameron Saylor</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6ser%2C+S">Sebastian B枚ser</a>, <a href="/search/nucl-ex?searchtype=author&query=Ferella%2C+A+D">Alfredo Davide Ferella</a>, <a href="/search/nucl-ex?searchtype=author&query=Arazi%2C+L">Lior Arazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Smith%2C+J+R">John R. Smith</a>, <a href="/search/nucl-ex?searchtype=author&query=Ferenc%2C+M+%C5%A0">Marija 艩egedin Ferenc</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="1810.00280v1-abstract-short" style="display: inline;"> The ABALONE Photosensor Technology (U.S. Pat. 9064678) is a modern, scalable technology specifically invented for cost effective mass production, robustness, and high performance. We present the performance of advanced fused silica ABALONE Photosensors, developed specifically for the potential extension of the Ice Cube neutrino experiment, and stress tested for 120 days. The resulting performance… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.00280v1-abstract-full').style.display = 'inline'; document.getElementById('1810.00280v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1810.00280v1-abstract-full" style="display: none;"> The ABALONE Photosensor Technology (U.S. Pat. 9064678) is a modern, scalable technology specifically invented for cost effective mass production, robustness, and high performance. We present the performance of advanced fused silica ABALONE Photosensors, developed specifically for the potential extension of the Ice Cube neutrino experiment, and stress tested for 120 days. The resulting performance makes a significant difference: intrinsic gain in the high 100 million range, total afterpulsing rate of only 0.005 ions per photoelectron, subnanosecond timing resolution, single photon sensitivity, and unique radiopurity and UV sensitivity, thanks to the fused silica components, at no additional cost to the assembly process. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.00280v1-abstract-full').style.display = 'none'; document.getElementById('1810.00280v1-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> 29 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">12 pages</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">MSC Class:</span> 85 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1804.01680">arXiv:1804.01680</a> <span> [<a href="https://arxiv.org/pdf/1804.01680">pdf</a>, <a href="https://arxiv.org/format/1804.01680">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-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/10.1088/1748-0221/13/07/P07013">10.1088/1748-0221/13/07/P07013 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Electron drift properties in high pressure gaseous xenon </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=NEXT+Collaboration"> NEXT Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Sim%C3%B3n%2C+A">A. Sim贸n</a>, <a href="/search/nucl-ex?searchtype=author&query=Felkai%2C+R">R. Felkai</a>, <a href="/search/nucl-ex?searchtype=author&query=Mart%C3%ADnez-Lema%2C+G">G. Mart铆nez-Lema</a>, <a href="/search/nucl-ex?searchtype=author&query=Monrabal%2C+F">F. Monrabal</a>, <a href="/search/nucl-ex?searchtype=author&query=Gonz%C3%A1lez-D%C3%ADaz%2C+D">D. Gonz谩lez-D铆az</a>, <a href="/search/nucl-ex?searchtype=author&query=Sorel%2C+M">M. Sorel</a>, <a href="/search/nucl-ex?searchtype=author&query=Morata%2C+J+A+H">J. A. Hernando Morata</a>, <a href="/search/nucl-ex?searchtype=author&query=G%C3%B3mez-Cadenas%2C+J+J">J. J. G贸mez-Cadenas</a>, <a href="/search/nucl-ex?searchtype=author&query=Adams%2C+C">C. Adams</a>, <a href="/search/nucl-ex?searchtype=author&query=%C3%81lvarez%2C+V">V. 脕lvarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Arazi%2C+L">L. Arazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Benlloch-Rodr%C3%ADguez%2C+J+M">J. M. Benlloch-Rodr铆guez</a>, <a href="/search/nucl-ex?searchtype=author&query=Borges%2C+F+I+G+M">F. I. G. M. Borges</a>, <a href="/search/nucl-ex?searchtype=author&query=Botas%2C+A">A. Botas</a>, <a href="/search/nucl-ex?searchtype=author&query=C%C3%A1rcel%2C+S">S. C谩rcel</a>, <a href="/search/nucl-ex?searchtype=author&query=Carri%C3%B3n%2C+J+V">J. V. Carri贸n</a>, <a href="/search/nucl-ex?searchtype=author&query=Cebri%C3%A1n%2C+S">S. Cebri谩n</a>, <a href="/search/nucl-ex?searchtype=author&query=Conde%2C+C+A+N">C. A. N. Conde</a>, <a href="/search/nucl-ex?searchtype=author&query=D%C3%ADaz%2C+J">J. D铆az</a>, <a href="/search/nucl-ex?searchtype=author&query=Diesburg%2C+M">M. Diesburg</a>, <a href="/search/nucl-ex?searchtype=author&query=Escada%2C+J">J. Escada</a>, <a href="/search/nucl-ex?searchtype=author&query=Esteve%2C+R">R. Esteve</a>, <a href="/search/nucl-ex?searchtype=author&query=Fernandes%2C+L+M+P">L. M. P. Fernandes</a> , et al. (51 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="1804.01680v3-abstract-short" style="display: inline;"> Gaseous time projection chambers (TPC) are a very attractive detector technology for particle tracking. Characterization of both drift velocity and diffusion is of great importance to correctly assess their tracking capabilities. NEXT-White is a High Pressure Xenon gas TPC with electroluminescent amplification, a 1:2 scale model of the future NEXT-100 detector, which will be dedicated to neutrinol… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.01680v3-abstract-full').style.display = 'inline'; document.getElementById('1804.01680v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1804.01680v3-abstract-full" style="display: none;"> Gaseous time projection chambers (TPC) are a very attractive detector technology for particle tracking. Characterization of both drift velocity and diffusion is of great importance to correctly assess their tracking capabilities. NEXT-White is a High Pressure Xenon gas TPC with electroluminescent amplification, a 1:2 scale model of the future NEXT-100 detector, which will be dedicated to neutrinoless double beta decay searches. NEXT-White has been operating at Canfranc Underground Laboratory (LSC) since December 2016. The drift parameters have been measured using $^{83m}$Kr for a range of reduced drift fields at two different pressure regimes, namely 7.2 bar and 9.1 bar. The results have been compared with Magboltz simulations. Agreement at the 5% level or better has been found for drift velocity, longitudinal diffusion and transverse diffusion. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.01680v3-abstract-full').style.display = 'none'; document.getElementById('1804.01680v3-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> 28 May, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 April, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">22 pages, 17 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/1804.00471">arXiv:1804.00471</a> <span> [<a href="https://arxiv.org/pdf/1804.00471">pdf</a>, <a href="https://arxiv.org/format/1804.00471">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of radon-induced backgrounds in the NEXT double beta decay experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=NEXT+Collaboration"> NEXT Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Novella%2C+P">P. Novella</a>, <a href="/search/nucl-ex?searchtype=author&query=Palmeiro%2C+B">B. Palmeiro</a>, <a href="/search/nucl-ex?searchtype=author&query=Sim%C3%B3n%2C+A">A. Sim贸n</a>, <a href="/search/nucl-ex?searchtype=author&query=Sorel%2C+M">M. Sorel</a>, <a href="/search/nucl-ex?searchtype=author&query=Adams%2C+C">C. Adams</a>, <a href="/search/nucl-ex?searchtype=author&query=Ferrario%2C+P">P. Ferrario</a>, <a href="/search/nucl-ex?searchtype=author&query=Mart%C3%ADnez-Lema%2C+G">G. Mart铆nez-Lema</a>, <a href="/search/nucl-ex?searchtype=author&query=Monrabal%2C+F">F. Monrabal</a>, <a href="/search/nucl-ex?searchtype=author&query=Zuzel%2C+G">G. Zuzel</a>, <a href="/search/nucl-ex?searchtype=author&query=G%C3%B3mez-Cadenas%2C+J+J">J. J. G贸mez-Cadenas</a>, <a href="/search/nucl-ex?searchtype=author&query=%C3%81lvarez%2C+V">V. 脕lvarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Arazi%2C+L">L. Arazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bailey%2C+K">K. Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Ballester%2C+F">F. Ballester</a>, <a href="/search/nucl-ex?searchtype=author&query=Benlloch-Rodr%C3%ADguez%2C+J+M">J. M. Benlloch-Rodr铆guez</a>, <a href="/search/nucl-ex?searchtype=author&query=Borges%2C+F+I+G+M">F. I. G. M. Borges</a>, <a href="/search/nucl-ex?searchtype=author&query=Botas%2C+A">A. Botas</a>, <a href="/search/nucl-ex?searchtype=author&query=C%C3%A1rcel%2C+S">S. C谩rcel</a>, <a href="/search/nucl-ex?searchtype=author&query=Carri%C3%B3n%2C+J+V">J. V. Carri贸n</a>, <a href="/search/nucl-ex?searchtype=author&query=Cebri%C3%A1n%2C+S">S. Cebri谩n</a>, <a href="/search/nucl-ex?searchtype=author&query=Conde%2C+C+A+N">C. A. N. Conde</a>, <a href="/search/nucl-ex?searchtype=author&query=D%C3%ADaz%2C+J">J. D铆az</a>, <a href="/search/nucl-ex?searchtype=author&query=Diesburg%2C+M">M. Diesburg</a> , et al. (57 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="1804.00471v3-abstract-short" style="display: inline;"> The measurement of the internal $^{222}$Rn activity in the NEXT-White detector during the so-called Run-II period with $^{136}$Xe-depleted xenon is discussed in detail, together with its implications for double beta decay searches in NEXT. The activity is measured through the alpha production rate induced in the fiducial volume by $^{222}$Rn and its alpha-emitting progeny. The specific activity is… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.00471v3-abstract-full').style.display = 'inline'; document.getElementById('1804.00471v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1804.00471v3-abstract-full" style="display: none;"> The measurement of the internal $^{222}$Rn activity in the NEXT-White detector during the so-called Run-II period with $^{136}$Xe-depleted xenon is discussed in detail, together with its implications for double beta decay searches in NEXT. The activity is measured through the alpha production rate induced in the fiducial volume by $^{222}$Rn and its alpha-emitting progeny. The specific activity is measured to be $(38.1\pm 2.2~\mathrm{(stat.)}\pm 5.9~\mathrm{(syst.)})$~mBq/m$^3$. Radon-induced electrons have also been characterized from the decay of the $^{214}$Bi daughter ions plating out on the cathode of the time projection chamber. From our studies, we conclude that radon-induced backgrounds are sufficiently low to enable a successful NEXT-100 physics program, as the projected rate contribution should not exceed 0.1~counts/yr in the neutrinoless double beta decay sample. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.00471v3-abstract-full').style.display = 'none'; document.getElementById('1804.00471v3-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> 10 October, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 April, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">28 pages, 10 figures, 6 tables. Version accepted for publication in JHEP</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1710.05600">arXiv:1710.05600</a> <span> [<a href="https://arxiv.org/pdf/1710.05600">pdf</a>, <a href="https://arxiv.org/format/1710.05600">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-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.nima.2018.07.013">10.1016/j.nima.2018.07.013 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Helium-Xenon mixtures to improve topological signature in high pressure gas Xenon TPCs </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Felkai%2C+R">R. Felkai</a>, <a href="/search/nucl-ex?searchtype=author&query=Monrabal%2C+F">F. Monrabal</a>, <a href="/search/nucl-ex?searchtype=author&query=Gonzalez-D%C3%ADaz%2C+D">D. Gonzalez-D铆az</a>, <a href="/search/nucl-ex?searchtype=author&query=Sorel%2C+M">M. Sorel</a>, <a href="/search/nucl-ex?searchtype=author&query=L%C3%B3pez-March%2C+N">N. L贸pez-March</a>, <a href="/search/nucl-ex?searchtype=author&query=G%C3%B3mez-Cadenas%2C+J+J">J. J. G贸mez-Cadenas</a>, <a href="/search/nucl-ex?searchtype=author&query=Adams%2C+C">C. Adams</a>, <a href="/search/nucl-ex?searchtype=author&query=%C3%81lvarez%2C+V">V. 脕lvarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Arazi%2C+L">L. Arazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Benlloch-Rodr%C3%ADguez%2C+J+M">J. M. Benlloch-Rodr铆guez</a>, <a href="/search/nucl-ex?searchtype=author&query=Borges%2C+F+I+G+M">F. I. G. M. Borges</a>, <a href="/search/nucl-ex?searchtype=author&query=Botas%2C+A">A. Botas</a>, <a href="/search/nucl-ex?searchtype=author&query=C%C3%A1rcel%2C+S">S. C谩rcel</a>, <a href="/search/nucl-ex?searchtype=author&query=Carri%C3%B3n%2C+J+V">J. V. Carri贸n</a>, <a href="/search/nucl-ex?searchtype=author&query=Cebri%C3%A1n%2C+S">S. Cebri谩n</a>, <a href="/search/nucl-ex?searchtype=author&query=Conde%2C+C+A+N">C. A. N. Conde</a>, <a href="/search/nucl-ex?searchtype=author&query=D%C3%ADaz%2C+J">J. D铆az</a>, <a href="/search/nucl-ex?searchtype=author&query=Diesburg%2C+M">M. Diesburg</a>, <a href="/search/nucl-ex?searchtype=author&query=Escada%2C+J">J. Escada</a>, <a href="/search/nucl-ex?searchtype=author&query=Esteve%2C+R">R. Esteve</a>, <a href="/search/nucl-ex?searchtype=author&query=Fernandes%2C+L+M+P">L. M. P. Fernandes</a>, <a href="/search/nucl-ex?searchtype=author&query=Ferrario%2C+P">P. Ferrario</a>, <a href="/search/nucl-ex?searchtype=author&query=Ferreira%2C+A+L">A. L. Ferreira</a>, <a href="/search/nucl-ex?searchtype=author&query=Freitas%2C+E+D+C">E. D. C. Freitas</a> , et al. (50 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="1710.05600v4-abstract-short" style="display: inline;"> Within the framework of xenon-based double beta decay experiments, we propose the possibility to improve the background rejection of an electroluminescent Time Projection Chamber (EL TPC) by reducing the diffusion of the drifting electrons while keeping nearly intact the energy resolution of a pure xenon EL TPC. Based on state-of-the-art microscopic simulations, a substantial addition of helium, a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.05600v4-abstract-full').style.display = 'inline'; document.getElementById('1710.05600v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1710.05600v4-abstract-full" style="display: none;"> Within the framework of xenon-based double beta decay experiments, we propose the possibility to improve the background rejection of an electroluminescent Time Projection Chamber (EL TPC) by reducing the diffusion of the drifting electrons while keeping nearly intact the energy resolution of a pure xenon EL TPC. Based on state-of-the-art microscopic simulations, a substantial addition of helium, around 10 or 15~\%, may reduce drastically the transverse diffusion down to 2.5~mm/$\sqrt{\mathrm{m}}$ from the 10.5~mm/$\sqrt{\mathrm{m}}$ of pure xenon. The longitudinal diffusion remains around 4~mm/$\sqrt{\mathrm{m}}$. Light production studies have been performed as well. They show that the relative variation in energy resolution introduced by such a change does not exceed a few percent, which leaves the energy resolution practically unchanged. The technical caveats of using photomultipliers close to an helium atmosphere are also discussed in detail. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.05600v4-abstract-full').style.display = 'none'; document.getElementById('1710.05600v4-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> 20 December, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2017. </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">8 pages, 7 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/1110.6053">arXiv:1110.6053</a> <span> [<a href="https://arxiv.org/pdf/1110.6053">pdf</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="Nuclear Experiment">nucl-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.nima.2011.11.018">10.1016/j.nima.2011.11.018 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Hybrid Multi Micropattern Gaseous Photomultiplier for detection of liquid-xenon scintillation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Duval%2C+S">Samuel Duval</a>, <a href="/search/nucl-ex?searchtype=author&query=Arazi%2C+L">Lior Arazi</a>, <a href="/search/nucl-ex?searchtype=author&query=Breskin%2C+A">Amos Breskin</a>, <a href="/search/nucl-ex?searchtype=author&query=Budnik%2C+R">Ranny Budnik</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+W">Wan-Ting Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Carduner%2C+H">Herv茅 Carduner</a>, <a href="/search/nucl-ex?searchtype=author&query=Coimbra%2C+A+E+C">A. E. C. Coimbra</a>, <a href="/search/nucl-ex?searchtype=author&query=Cortesi%2C+M">Marco Cortesi</a>, <a href="/search/nucl-ex?searchtype=author&query=Kaner%2C+R">Roy Kaner</a>, <a href="/search/nucl-ex?searchtype=author&query=Cussonneau%2C+J">Jean-Pierre Cussonneau</a>, <a href="/search/nucl-ex?searchtype=author&query=Donnard%2C+J">J茅r么me Donnard</a>, <a href="/search/nucl-ex?searchtype=author&query=Lamblin%2C+J">Jacob Lamblin</a>, <a href="/search/nucl-ex?searchtype=author&query=Lemaire%2C+O">Olivier Lemaire</a>, <a href="/search/nucl-ex?searchtype=author&query=Ray%2C+P+L">Patrick Le Ray</a>, <a href="/search/nucl-ex?searchtype=author&query=Lopes%2C+J+A+M">J. A. M. Lopes</a>, <a href="/search/nucl-ex?searchtype=author&query=Hadi%2C+A+M">Abdul-Fattah Mohamad Hadi</a>, <a href="/search/nucl-ex?searchtype=author&query=Morteau%2C+E">Eric Morteau</a>, <a href="/search/nucl-ex?searchtype=author&query=Oger%2C+T">Tugdual Oger</a>, <a href="/search/nucl-ex?searchtype=author&query=Santos%2C+J+M+F+d">J. M. F. dos Santos</a>, <a href="/search/nucl-ex?searchtype=author&query=Lavina%2C+L+S">Luca Scotto Lavina</a>, <a href="/search/nucl-ex?searchtype=author&query=Stutzmann%2C+J">Jean-S茅bastien Stutzmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Thers%2C+D">Dominique Thers</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="1110.6053v1-abstract-short" style="display: inline;"> Gaseous PhotoMultipliers (GPM) are a very promising alternative of vacuum PMTs especially for large-size noble-liquid detectors in the field of Functional Nuclear Medical Imaging and Direct Dark Matter Detection. We present recent characterization results of a Hybrid-GPM made of three Micropattern Gaseous Structures; a Thick Gaseous Electron Multiplier (THGEM), a Parallel Ionization Multiplier (PI… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1110.6053v1-abstract-full').style.display = 'inline'; document.getElementById('1110.6053v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1110.6053v1-abstract-full" style="display: none;"> Gaseous PhotoMultipliers (GPM) are a very promising alternative of vacuum PMTs especially for large-size noble-liquid detectors in the field of Functional Nuclear Medical Imaging and Direct Dark Matter Detection. We present recent characterization results of a Hybrid-GPM made of three Micropattern Gaseous Structures; a Thick Gaseous Electron Multiplier (THGEM), a Parallel Ionization Multiplier (PIM) and a MICROMesh GAseous Structure (MICROMEGAS),operating in Ne/CF4 (90:10). Gain values close to 10^7 were recorded in this mixture, with 5.9keV x-rays at 1100 mbar, both at room temperature and at that of liquid xenon (T = 171K). The results are discussed in term of scintillation detection. While the present multiplier was investigated without photocathode, complementary results of photoextraction from CsI UV photocathodes are presented in Ne/CH4 (95:5) and CH4 in cryogenic conditions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1110.6053v1-abstract-full').style.display = 'none'; document.getElementById('1110.6053v1-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, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2011. </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">7 pages, 6 figures, Proceeding of the NDIP Conference 2011 to be published in NIM A</span> </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a 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