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Radon-induced backgrounds in the NEXT-100 experiment

Fuente: arXiv

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Autores principales:	NEXT Collaboration, Cortes-Parra, C., Novella, P., Martínez-Lema, G., Almazán, H., Álvarez, V., Arazi, L., Arnquist, I. J., Auria-Luna, F., Ayet, S., Ayyad, Y., Azevedo, C. D. R., Ballester, F., Barcelon, J. E., del Barrio-Torregrosa, M., Benlloch-Rodríguez, J. M., Borges, F. I. G. M., Brodoline, A., Byrnes, N., Castillo, A., Church, E., Cid, M., Cid, X., Conde, C. A. N., Cossío, F. P., Coupe, R., Dey, E., Dietz, P., Echeverria, C., Elorza, M., Esteve, R., Felkai, R., Fernandes, L. M. P., Ferrario, P., Mancheño, P. Ferrero, Foss, F. W., Freixa, Z., García-Barrena, J., Gómez-Cadenas, J. J., Grocott, J. W. R., Guenette, R., Hauptman, J., Henriques, C. A. O., Morata, J. A. Hernando, Herrero-Gómez, P., Herrero, V., Carrete, C. Hervés, Ifergan, Y., Isabel, A. F. B., Jones, B. J. P., Kellerer, F., Larizgoitia, L., Larumbe, A., Lebrun, P., Lopez, F., López-March, N., Madigan, R., Mano, R. D. P., Marauri, A., Marques, A. P., Martín-Albo, J., Martínez, A., Martínez-Vara, M., Miller, R. L., Mistry, K., Molina-Canteras, J., Monrabal, F., Monteiro, C. M. B., Mora, F. J., Navarro, K. E., Nygren, D. R., Oblak, E., Osborne, I., Palacio, J., Palmeiro, B., Para, A., Parmaksiz, I., Pazos, A., Pelegrin, J., Maneiro, M. Pérez, Querol, M., Renner, J., Rivilla, I., Rogero, C., Rogers, L., Romeo, B., Romo-Luque, C., Ruiz-Chóliz, E., Saharia, P., Santos, F. P., Santos, J. M. F. dos, Seemann, M., Shomroni, I., Silva, A. L. M., Silva, P. A. O. C., Simón, A., Soleti, S. R., Sorel, M., Soto-Oton, J., Teixeira, J. M. R., Teruel-Pardo, S., Toledo, J. F., Tonnelé, C., Torelli, S., Torrent, J., Trettin, A., Valle, P. R. G., Vanga, M., Cabaleiro, P. Vázquez, Veloso, J. F. C. A., Villamil, J. D., Padruno, L. M. Villar, Waiton, J., Yubero-Navarro, A.
Formato:	Preprint
Publicado:	2026
Materias:	High Energy Physics - Experiment
Acceso en línea:	Acceder al recurso
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_version_	1866917427074301952
author	NEXT Collaboration Cortes-Parra, C. Novella, P. Martínez-Lema, G. Almazán, H. Álvarez, V. Arazi, L. Arnquist, I. J. Auria-Luna, F. Ayet, S. Ayyad, Y. Azevedo, C. D. R. Ballester, F. Barcelon, J. E. del Barrio-Torregrosa, M. Benlloch-Rodríguez, J. M. Borges, F. I. G. M. Brodoline, A. Byrnes, N. Castillo, A. Church, E. Cid, M. Cid, X. Conde, C. A. N. Cossío, F. P. Coupe, R. Dey, E. Dietz, P. Echeverria, C. Elorza, M. Esteve, R. Felkai, R. Fernandes, L. M. P. Ferrario, P. Mancheño, P. Ferrero Foss, F. W. Freixa, Z. García-Barrena, J. Gómez-Cadenas, J. J. Grocott, J. W. R. Guenette, R. Hauptman, J. Henriques, C. A. O. Morata, J. A. Hernando Herrero-Gómez, P. Herrero, V. Carrete, C. Hervés Ifergan, Y. Isabel, A. F. B. Jones, B. J. P. Kellerer, F. Larizgoitia, L. Larumbe, A. Lebrun, P. Lopez, F. López-March, N. Madigan, R. Mano, R. D. P. Marauri, A. Marques, A. P. Martín-Albo, J. Martínez, A. Martínez-Vara, M. Miller, R. L. Mistry, K. Molina-Canteras, J. Monrabal, F. Monteiro, C. M. B. Mora, F. J. Navarro, K. E. Nygren, D. R. Oblak, E. Osborne, I. Palacio, J. Palmeiro, B. Para, A. Parmaksiz, I. Pazos, A. Pelegrin, J. Maneiro, M. Pérez Querol, M. Renner, J. Rivilla, I. Rogero, C. Rogers, L. Romeo, B. Romo-Luque, C. Ruiz-Chóliz, E. Saharia, P. Santos, F. P. Santos, J. M. F. dos Seemann, M. Shomroni, I. Silva, A. L. M. Silva, P. A. O. C. Simón, A. Soleti, S. R. Sorel, M. Soto-Oton, J. Teixeira, J. M. R. Teruel-Pardo, S. Toledo, J. F. Tonnelé, C. Torelli, S. Torrent, J. Trettin, A. Valle, P. R. G. Vanga, M. Cabaleiro, P. Vázquez Veloso, J. F. C. A. Villamil, J. D. Padruno, L. M. Villar Waiton, J. Yubero-Navarro, A.
author_facet	NEXT Collaboration Cortes-Parra, C. Novella, P. Martínez-Lema, G. Almazán, H. Álvarez, V. Arazi, L. Arnquist, I. J. Auria-Luna, F. Ayet, S. Ayyad, Y. Azevedo, C. D. R. Ballester, F. Barcelon, J. E. del Barrio-Torregrosa, M. Benlloch-Rodríguez, J. M. Borges, F. I. G. M. Brodoline, A. Byrnes, N. Castillo, A. Church, E. Cid, M. Cid, X. Conde, C. A. N. Cossío, F. P. Coupe, R. Dey, E. Dietz, P. Echeverria, C. Elorza, M. Esteve, R. Felkai, R. Fernandes, L. M. P. Ferrario, P. Mancheño, P. Ferrero Foss, F. W. Freixa, Z. García-Barrena, J. Gómez-Cadenas, J. J. Grocott, J. W. R. Guenette, R. Hauptman, J. Henriques, C. A. O. Morata, J. A. Hernando Herrero-Gómez, P. Herrero, V. Carrete, C. Hervés Ifergan, Y. Isabel, A. F. B. Jones, B. J. P. Kellerer, F. Larizgoitia, L. Larumbe, A. Lebrun, P. Lopez, F. López-March, N. Madigan, R. Mano, R. D. P. Marauri, A. Marques, A. P. Martín-Albo, J. Martínez, A. Martínez-Vara, M. Miller, R. L. Mistry, K. Molina-Canteras, J. Monrabal, F. Monteiro, C. M. B. Mora, F. J. Navarro, K. E. Nygren, D. R. Oblak, E. Osborne, I. Palacio, J. Palmeiro, B. Para, A. Parmaksiz, I. Pazos, A. Pelegrin, J. Maneiro, M. Pérez Querol, M. Renner, J. Rivilla, I. Rogero, C. Rogers, L. Romeo, B. Romo-Luque, C. Ruiz-Chóliz, E. Saharia, P. Santos, F. P. Santos, J. M. F. dos Seemann, M. Shomroni, I. Silva, A. L. M. Silva, P. A. O. C. Simón, A. Soleti, S. R. Sorel, M. Soto-Oton, J. Teixeira, J. M. R. Teruel-Pardo, S. Toledo, J. F. Tonnelé, C. Torelli, S. Torrent, J. Trettin, A. Valle, P. R. G. Vanga, M. Cabaleiro, P. Vázquez Veloso, J. F. C. A. Villamil, J. D. Padruno, L. M. Villar Waiton, J. Yubero-Navarro, A.
contents	The NEXT-100 detector at the LSC aims at the first competitive search for the \bbnonu decay using a high-pressure \Xe{136} electroluminescent time projection chamber. The first low-background run of NEXT-100 at 3.95 bar has been devoted to the measurement of the radon-induced backgrounds impacting this search. The contributions from both the internal and external airborne radon have been evaluated. The internal \Rn{222} activity is found to be (0.95$\pm$0.04(stat)$\pm$0.09(sys)) Bq/m$^3$, while no traces of \Rn{220} have been observed. Most of the \Rn{222} progeny plate-out on the surface of the cathode of the detector, leading to a rate of Rn-induced \Bi{214} of (0.97$\pm$0.05(stat)$\pm$0.10(sys)) Hz for visible energies above 400 keV. The corresponding background index in the \bbnonu region of interest is evaluated as (7.3$\pm$1.5(stat)$\pm$0.8(sys))$\times10^{-4}$ counts/(keV$\cdot$kg$\cdot$yr) after selection of the fully contained events. This background index is reduced to $\sim$4$\times10^{-5}$ counts/(keV$\cdot$kg$\cdot$yr) by applying a topological selection requiring only one double-electron-like track in the events. This value is one order of magnitude below the total radiogenic background expectation in NEXT-100. By analyzing the correlation of the airborne radon activity and the measured rate of events in NEXT-100, it is concluded that the detector operates in a virtualy radon-free environment thanks to the radon abatement system of the LSC.
format	Preprint
id	arxiv_https___arxiv_org_abs_2604_19616
institution	arXiv
publishDate	2026
record_format	arxiv
spellingShingle	Radon-induced backgrounds in the NEXT-100 experiment NEXT Collaboration Cortes-Parra, C. Novella, P. Martínez-Lema, G. Almazán, H. Álvarez, V. Arazi, L. Arnquist, I. J. Auria-Luna, F. Ayet, S. Ayyad, Y. Azevedo, C. D. R. Ballester, F. Barcelon, J. E. del Barrio-Torregrosa, M. Benlloch-Rodríguez, J. M. Borges, F. I. G. M. Brodoline, A. Byrnes, N. Castillo, A. Church, E. Cid, M. Cid, X. Conde, C. A. N. Cossío, F. P. Coupe, R. Dey, E. Dietz, P. Echeverria, C. Elorza, M. Esteve, R. Felkai, R. Fernandes, L. M. P. Ferrario, P. Mancheño, P. Ferrero Foss, F. W. Freixa, Z. García-Barrena, J. Gómez-Cadenas, J. J. Grocott, J. W. R. Guenette, R. Hauptman, J. Henriques, C. A. O. Morata, J. A. Hernando Herrero-Gómez, P. Herrero, V. Carrete, C. Hervés Ifergan, Y. Isabel, A. F. B. Jones, B. J. P. Kellerer, F. Larizgoitia, L. Larumbe, A. Lebrun, P. Lopez, F. López-March, N. Madigan, R. Mano, R. D. P. Marauri, A. Marques, A. P. Martín-Albo, J. Martínez, A. Martínez-Vara, M. Miller, R. L. Mistry, K. Molina-Canteras, J. Monrabal, F. Monteiro, C. M. B. Mora, F. J. Navarro, K. E. Nygren, D. R. Oblak, E. Osborne, I. Palacio, J. Palmeiro, B. Para, A. Parmaksiz, I. Pazos, A. Pelegrin, J. Maneiro, M. Pérez Querol, M. Renner, J. Rivilla, I. Rogero, C. Rogers, L. Romeo, B. Romo-Luque, C. Ruiz-Chóliz, E. Saharia, P. Santos, F. P. Santos, J. M. F. dos Seemann, M. Shomroni, I. Silva, A. L. M. Silva, P. A. O. C. Simón, A. Soleti, S. R. Sorel, M. Soto-Oton, J. Teixeira, J. M. R. Teruel-Pardo, S. Toledo, J. F. Tonnelé, C. Torelli, S. Torrent, J. Trettin, A. Valle, P. R. G. Vanga, M. Cabaleiro, P. Vázquez Veloso, J. F. C. A. Villamil, J. D. Padruno, L. M. Villar Waiton, J. Yubero-Navarro, A. High Energy Physics - Experiment The NEXT-100 detector at the LSC aims at the first competitive search for the \bbnonu decay using a high-pressure \Xe{136} electroluminescent time projection chamber. The first low-background run of NEXT-100 at 3.95 bar has been devoted to the measurement of the radon-induced backgrounds impacting this search. The contributions from both the internal and external airborne radon have been evaluated. The internal \Rn{222} activity is found to be (0.95$\pm$0.04(stat)$\pm$0.09(sys)) Bq/m$^3$, while no traces of \Rn{220} have been observed. Most of the \Rn{222} progeny plate-out on the surface of the cathode of the detector, leading to a rate of Rn-induced \Bi{214} of (0.97$\pm$0.05(stat)$\pm$0.10(sys)) Hz for visible energies above 400 keV. The corresponding background index in the \bbnonu region of interest is evaluated as (7.3$\pm$1.5(stat)$\pm$0.8(sys))$\times10^{-4}$ counts/(keV$\cdot$kg$\cdot$yr) after selection of the fully contained events. This background index is reduced to $\sim$4$\times10^{-5}$ counts/(keV$\cdot$kg$\cdot$yr) by applying a topological selection requiring only one double-electron-like track in the events. This value is one order of magnitude below the total radiogenic background expectation in NEXT-100. By analyzing the correlation of the airborne radon activity and the measured rate of events in NEXT-100, it is concluded that the detector operates in a virtualy radon-free environment thanks to the radon abatement system of the LSC.
title	Radon-induced backgrounds in the NEXT-100 experiment
topic	High Energy Physics - Experiment
url	https://arxiv.org/abs/2604.19616