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CERN Document Server Намерени са 6 записа  Търсенето отне 0.60 секунди. 
1.
A new amplification structure for time projection chambers based on electroluminescence / González-Díaz, D. (Santiago de Compostela U., IGFAE) ; Fontaíña, M. (Santiago de Compostela U., IGFAE) ; García Castro, D. (Santiago de Compostela U., IGFAE) ; Mehl, B. (CERN) ; de Oliveira, R. (CERN) ; Williams, S. (CERN) ; Monrabal, F. (Donostia Intl. Phys. Ctr., San Sebastian) ; Querol, M. (Valencia U., IFIC) ; Álvarez, V. (Valencia U., IFIC)
A simple hole-type secondary scintillation structure (2 mm-hole, 5 mm-pitch, 5 mm-thickness) is introduced and its operation demonstrated in pure xenon in the pressure range 2-10 bar. The new device, characteristically translucent, has been manufactured through a collaboration between IGFAE and the CERN workshop, and relies entirely on radiopure materials (acrylic and copper), being extremely rugged in the presence of sparks, mechanically robust, and easily scalable, yet made through a relatively simple process. [...]
arXiv:1907.03292.- 2020-06-12 - 10 p. - Published in : J. Phys.: Conf. Ser. 1498 (2020) 012019 Fulltext: PDF; Fulltext from publisher: PDF;
In : 6th International Conference on Micro Pattern Gaseous Detectors, La Rochelle, France, 5 - 10 May 2019, pp.012019
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2.
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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3.
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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4.
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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5.
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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6.
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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2 Querol, M
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