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CERN Document Server	18 záznamov nájdených 1 - 10 skoč na záznam:	Hľadanie trvalo 0.75 sekúnd.

Recoil imaging for dark matter, neutrinos, and physics beyond the Standard Model / O'Hare, C.A.J. (Sydney U. ; ARC, CoEPP, Australia) ; Loomba, D. (New Mexico U.) ; Altenmuller, K. (U. Zaragoza (main)) ; Alvarez-Pol, H. (Santiago de Compostela U., IGFAE) ; Amaro, F.D. (LIP, Coimbra) ; Araujo, H.M. (Imperial Coll., London) ; Aristizabal Sierra, D. (Santa Maria U., Valparaiso ; Liege U.) ; Asaadi, J. (Texas U., Arlington) ; Attie, D. (IRFU, Saclay) ; Aune, S. (IRFU, Saclay) et al.
Recoil imaging entails the detection of spatially resolved ionization tracks generated by particle interactions. [...]
arXiv:2203.05914 ; FERMILAB-CONF-22-334-ND. - 78.
Fermilab Library Server - eConf - Fulltext - Fulltext

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Microscopic simulation of xenon-based optical TPCs in the presence of molecular additives / Azevedo, C.D.R. (Aveiro U.) ; González-Díaz, D. (CERN ; Santiago de Compostela U., IGFAE) ; Biagi, S.F. (Uludag U.) ; Oliveira, C.A.B. (LBNL, Berkeley) ; Henriques, C.A.O. (Coimbra U.) ; Escada, J. (Coimbra U.) ; Monrabal, F. (Texas U., Arlington) ; Gómez-Cadenas, J.J. (Valencia U., IFIC) ; Álvarez, V. (Valencia U., IFIC) ; Benlloch-Rodríguez, J.M. (Valencia U., IFIC) et al.
We introduce a simulation framework for the transport of high and low energy electrons in xenon-based gaseous optical time projection chambers (OTPCs). The simulation relies on elementary cross sections (electron-atom and electron-molecule) and incorporates, in order to compute the gas scintillation, the reaction/quenching rates (atom-atom and atom-molecule) of the first 41 excited states of xenon and the relevant associated excimers, together with their radiative cascade. [...]
arXiv:1705.09481; FERMILAB-PUB-17-267-CD.- 2018-01-01 - 16 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 877 (2018) 157-172 Fulltext: arXiv:1705.09481 - PDF; fermilab-pub-17-267-cd - PDF; External link: Fermilab Accepted Manuscript

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Background rejection in NEXT using deep neural networks / NEXT Collaboration
We investigate the potential of using deep learning techniques to reject background events in searches for neutrinoless double beta decay with high pressure xenon time projection chambers capable of detailed track reconstruction. The differences in the topological signatures of background and signal events can be learned by deep neural networks via training over many thousands of events. [...]
arXiv:1609.06202; FERMILAB-PUB-16-422-CD.- 2017-01-16 - 21 p. - Published in : JINST 12 (2017) T01004 Fulltext: 10.1088_1748-0221_12_01_T01004 - PDF; arXiv:1609.06202 - PDF; fermilab-pub-16-422-cd - PDF; IOP Open Access article: PDF; External link: Fermilab Accepted Manuscript

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In-beam evaluation of a medium-size Resistive-Plate WELL gaseous particle detector / Moleri, L. (Weizmann Inst.) ; Amaro, F.D. (Coimbra U.) ; Arazi, L. (Weizmann Inst.) ; Azevedo, C.D.R. (Aveiro U.) ; Breskin, A. (Weizmann Inst.) ; Coimbra, A.E.C. (Weizmann Inst.) ; Oliveri, E. (CERN) ; Pereira, F.A. (Aveiro U.) ; Renous, D. Shaked (Weizmann Inst.) ; Schaarschmidt, J. (Weizmann Inst.) et al.
In-beam evaluation of a fully-equipped medium-size 30$\times$30 cm$^2$ Resistive Plate WELL (RPWELL) detector is presented. It consists here of a single element gas-avalanche multiplier with Semitron ESD225 resistive plate, 1 cm$^2$ readout pads and APV25/SRS electronics. [...]
arXiv:1607.02587.- 2016-09-27 - 13 p. - Published in : JINST 11 (2016) P09013 Fulltext: PDF; IOP Open Access article: PDF; Preprint: PDF; External link: Preprint

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Sensitivity of NEXT-100 to neutrinoless double beta decay / NEXT Collaboration
NEXT-100 is an electroluminescent high-pressure xenon gas time projection chamber that will search for the neutrinoless double beta decay of Xe-136. The detector possesses two features of great value in neutrinoless double beta decay searches: very good energy resolution (better than 1% FWHM at the Q value of Xe-136) and track reconstruction for the discrimination of signal and background events. [...]
arXiv:1511.09246; FERMILAB-PUB-16-669-CD-ND.- 2016-05-26 - 30 p. - Published in : JHEP 05 (2016) 159 Article from SCOAP3: PDF; Fulltext: PDF; Springer Open Access article: PDF; External link: Fermilab Library Server (fulltext available)

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An homeopathic cure to pure Xenon large diffusion / Azevedo, C.D.R. (U. Aveiro (main)) ; Fernandes, L.M.P. (Coimbra U.) ; Freitas, E.D.C. (Coimbra U.) ; Gonzalez-Diaz, D. (CERN) ; Monrabal, F. (Texas U., Arlington) ; Monteiro, C.M.B. (Coimbra U.) ; dos Santos, J. M. F. (Coimbra U.) ; Veloso, J.F.C.A. (U. Aveiro (main)) ; Gomez-Cadenas, J. J (CERN ; Valencia U. ; Valencia U., IFIC)
The NEXT neutrinoless double beta decay experiment will use a high- pressure gas electroluminescence-based TPC to search for the decay of Xe-136. One of the main advantages of this technology is the possibility to reconstruct the topology of events with energies close to Qbb. [...]
arXiv:1511.07189.- 2016-02-03 - 7 p. - Published in : JINST 11 (2016) C02007 Fulltext: arXiv:1511.07189 - PDF; 10.1088_1748-0221_11_02_C02007 - PDF; IOP Open Access article: PDF; External link: Preprint
In : International Conference on LIght Detection in Noble Elements, Albany, NY, USA, 28 - 30 Aug 2015, pp.C02007

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First in-beam studies of a Resistive-Plate WELL gaseous multiplier / Bressler, S. (Weizmann Inst.) ; Moleri, L. (Weizmann Inst.) ; Pitt, M. (Weizmann Inst.) ; Kudella, S. (Karlsruhe U., EKP) ; Azevedo, C.D.R. (Aveiro U.) ; Amaro, F.D. (Coimbra U.) ; Jorge, M.R. (Coimbra U.) ; dos Santos, J.M.F. (Coimbra U.) ; Veloso, J.F.C.A. (Aveiro U.) ; Natal da Luz, H. (Coimbra U.) et al.
We present the results of the first in-beam studies of a medium size (10$\times$10 cm$^2$) Resistive-Plate WELL (RPWELL): a single-sided THGEM coupled to a pad anode through a resistive layer of high bulk resistivity ($\sim$10$^9 \Omega$cm). The 6.2~mm thick (excluding readout electronics) single-stage detector was studied with 150~GeV muons and pions. [...]
arXiv:1510.03116.- 2016-01-12 - 14 p. - Published in : JINST 11 (2016) P01005 Fulltext: PDF; IOP Open Access article: PDF; Preprint: PDF; External link: Preprint

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First proof of topological signature in high pressure xenon gas with electroluminescence amplification / NEXT Collaboration
The NEXT experiment aims to observe the neutrinoless double beta decay of xenon in a high-pressure Xe136 gas TPC using electroluminescence (EL) to amplify the signal from ionization. One of the main advantages of this technology is the possibility to reconstruct the topology of events with energies close to Qbb. [...]
arXiv:1507.05902; FERMILAB-PUB-15-648-CD-ND.- 2016-01-19 - 18 p. - Published in : JHEP 01 (2016) 104 Article from SCOAP3: PDF; Fulltext: PDF; Springer Open Access article: PDF; External link: Fermilab Library Server (fulltext available)

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Accurate gamma and MeV-electron track reconstruction with an ultra-low diffusion Xenon/TMA TPC at 10 atmospheres / NEXT Collaboration
We report the performance of a 10 atm Xenon/trimethylamine time projection chamber (TPC) for the detection of X-rays (30 keV) and gamma-rays (0.511-1.275 MeV) in conjunction with the accurate tracking of the associated electrons. When operated at such a high pressure and in 1%-admixtures, trimethylamine (TMA) endows Xenon with an extremely low electron diffusion (1.3 +-0.13 mm-sigma (longitudinal), 0.8 +-0.15 mm-sigma (transverse) along 1 m drift) besides forming a convenient Penning-Fluorescent mixture. [...]
arXiv:1504.03678.- 2015-12-21 - 17 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 804 (2015) 8-24 Elsevier Open Access article: PDF; Fulltext: PDF; External link: Preprint

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10.

First Axion Results from the XENON100 Experiment / XENON100 Collaboration
We present the first results of searches for axions and axion-like-particles with the XENON100 experiment. The axion-electron coupling constant, $g_{Ae}$, has been tested by exploiting the axio-electric effect in liquid xenon. [...]
arXiv:1404.1455.- 2014-09-09 - 7 p. - Published in : Phys. Rev. D Fulltext: PDF; External link: Preprint

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