Description and commissioning of NEXT-MM prototype: first results from operation in a Xenon-Trimethylamine gas mixture

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Álvarez Puerta, Vicente
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Aznar, F.
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Borges, Filipa I.G.M.
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Calvet, D.
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Cárcel García, Sara
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Castel, J.
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Cebrián, Susana
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Cervera Villanueva, Anselmo
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Conde, Carlos A.N.
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Dafni, Theopisti
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Dias, T.H.V.T
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Díaz Medina, José
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Druillole, F.
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Egorov, M.
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Freitas, Elisabete D.C.
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Gehman, Victor M.
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Gil Ortiz, Alejandro
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Giomataris, I.
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Goldschmidt, Azriel
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Gómez, H.
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Gómez Cadenas, Juan José
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González-Díaz, Diego
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Gutiérrez, Rafael María
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Hauptman, John M.
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Hernando Morata, J.A.
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Herrera, D.C.
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Iguaz, F.J.
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Irastorza, Igor Garcia
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Jinete, M.A.
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Labarga, Luis A.
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Laing, Andrew
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Le Coguie, A.
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Liubarsky, Igor
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Lopes, J.A.M.
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Lorca Galindo, David
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Losada, Marta
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Luzón, Gloria
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Marí, A.
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Martín-Albo Simón, Justo
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Martínez Pérez, Alberto
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Martínez Lema, Gonzalo
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Miller, Tom P.
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Moiseenko, A.
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Mols, J.P.
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Monrabal Capilla, Francesc
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Monteiro, Cristina M.B.
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Mora, Francisco José
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Moutinho, L.M.
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Muñoz Vidal, J.
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Natal da Luz, H.
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Navarro, G.
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Nebot Guinot, Miquel
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Nygren, David R.
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Oliveira, Carlos A.B.
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Palma, R.
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Pérez, Javier Martin
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Pérez Aparicio, J.L.
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Renner, Joshua
orcId Ripoll Masferrer, Lluís​ researcherId Ripoll Masferrer, Lluís​ scopusId Ripoll Masferrer, Lluís​ ​
Ripoll Masferrer, Lluís
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Rodríguez, Ángel Y.
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Rodríguez Samaniego, Javier
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Santos, Filomena P.
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dos Santos, Joaquim M.F.
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Seguí, Laura
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Serra Díaz-Cano, Luis
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Shuman, Derek B.
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Simón Estévez, Ander
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Sofka, C.
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Sorel, Michel
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Toledo, J.F.
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Tomás, A.
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Torrent Collell, Jordi
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Tsamalaidze, Zviadi
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Veloso, João F.C.A.
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Villar, José Ángel
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Webb, R.C.
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White, James T.
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Yahlali Haddou, Nadia
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A technical description of NEXT-MM and its commissioning and first performance is reported. Having an active volume of ~ 35 cm drift × 28 cm diameter, it constitutes the largest Micromegas-read TPC operated in Xenon ever constructed, made by a sectorial arrangement of the 4 largest single wafers manufactured with the Microbulk technique to date. It is equipped with a suitably pixelized readout and with a sufficiently large sensitive volume ( ~ 23 l) so as to contain long ( ~ 20 cm) electron tracks. First results obtained at 1 bar for Xenon and Trymethylamine (Xe-(2%)TMA) mixture are presented. The TPC can accurately reconstruct extended background tracks. An encouraging full-width half-maximum of 11.6 % was obtained for ~ 29 keV gammas without resorting to any data post-processing ​
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