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523 results on '"Galán, J."'

2. X-ray detectors for the BabyIAXO solar axion search

Author

Altenmüller, K., Biasuzzi, B., Castel, J.F., Cebrián, S., Dafni, T., Desch, K., Díez-Ibañez, D., Ferrer-Ribas, E., Galan, J., Galindo, J., García, J.A., Irastorza, I.G., Kaminski, J., Luzón, G., Margalejo, C., Mirallas, H., Navick, X.F., Obis, L., Ortiz de Solórzano, A., von Oy, J., Papaevangelou, T., Pérez, O., Ruz, J., Schiffer, T., Schmidt, S., Segui, L., and Vogel, J.K.

Published
2023
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6. The large inner Micromegas modules for the Atlas Muon Spectrometer upgrade: Construction, quality control and characterization

Author

Allard, J., Andari, N., Anfreville, M., Attié, D., Aubernon, E., Aune, S., Bachacou, H., Balli, F., Bauer, F., Beltramelli, J., Bennet, J., Benoit, T., Bervas, H., Bey, T., Bouaziz, S., Boyer, M., Cara, G., Chaleil, T., Chevalérias, T., Coppollani, X., Costa, J., Decock, G., Deliot, F., Denysiuk, D., Desforge, D., Disset, G., Durand, G.A., Durand, R., Elman, J., Ferrer-Ribas, E., Fontaine, M., Formica, A., Galán, J., Gamache, W., Giganon, A., Giraud, J., Giraud, P.F., Glonti, G., Goblin, C., Graffin, P., Guillard, J.C., Hassani, S., Hervé, S., Javello, S., Jeanneau, F., Jourde, D., Jurie, S., Kebbiri, M., Kawamoto, T., Lampoudis, C., Laporte, J.F., Leboeuf, D., Lefèvre, M., Lohan, M., Loiseau, C., Magnier, P., Mandjavidze, I., Manjarrés, J., Mas, P., Mur, M., Nikolaidou, R., Peyaud, A., Pierrepont, D., Piret, Y., Ponsot, P., Prono, G., Riallot, M., Rossi, F., Schune, P., Vacher, T., Vandenbroucke, M., Vigier, A., Vuillemin, C., Usseglio, M., and Wu, Z.

Published
2022
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7. Guidelines for enhanced recovery after cardiac surgery. Consensus document of Spanish Societies of Anaesthesia (SEDAR), Cardiovascular Surgery (SECCE) and Perfusionists (AEP)

Author

Pajares, M.A., Margarit, J.A., García-Camacho, C., García-Suarez, J., Mateo, E., Castaño, M., López Forte, C., López Menéndez, J., Gómez, M., Soto, M.J., Veiras, S., Martín, E., Castaño, B., López Palanca, S., Gabaldón, T., Acosta, J., Fernández Cruz, J., Fernández López, A.R., García, M., Hernández Acuña, C., Moreno, J., Osseyran, F., Vives, M., Pradas, C., Aguilar, E.M., Bel Mínguez, A.M., Bustamante-Munguira, J., Gutiérrez, E., Llorens, R., Galán, J., Blanco, J., and Vicente, R.

Published
2021
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11. Cosmogenic production of tritium in dark matter detectors

Author

Amaré, J., Castel, J., Cebrián, S., Coarasa, I., Cuesta, C., Dafni, T., Galán, J., García, E., Garza, J.G., Iguaz, F.J., Irastorza, I.G., Luzón, G., Martínez, M., Mirallas, H., Oliván, M.A., Ortigoza, Y., Ortiz de Solórzano, A., Puimedón, J., Ruiz-Chóliz, E., Sarsa, M.L., Villar, J.A., and Villar, P.

Published
2018
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15. Readout technologies for directional WIMP Dark Matter detection

Author

Battat, J.B.R., Irastorza, I.G., Aleksandrov, A., Asada, T., Baracchini, E., Billard, J., Bosson, G., Bourrion, O., Bouvier, J., Buonaura, A., Burdge, K., Cebrián, S., Colas, P., Consiglio, L., Dafni, T., D’Ambrosio, N., Deaconu, C., De Lellis, G., Descombes, T., Di Crescenzo, A., Di Marco, N., Druitt, G., Eggleston, R., Ferrer-Ribas, E., Fusayasu, T., Galán, J., Galati, G., García, J.A., Garza, J.G., Gentile, V., Garcia-Sciveres, M., Giomataris, Y., Guerrero, N., Guillaudin, O., Guler, A.M., Harton, J., Hashimoto, T., Hedges, M.T., Iguaz, F.J., Ikeda, T., Jaegle, I., Kadyk, J.A., Katsuragawa, T., Komura, S., Kubo, H., Kuge, K., Lamblin, J., Lauria, A., Lee, E.R., Lewis, P., Leyton, M., Loomba, D., Lopez, J.P., Luzón, G., Mayet, F., Mirallas, H., Miuchi, K., Mizumoto, T., Mizumura, Y., Monacelli, P., Monroe, J., Montesi, M.C., Naka, T., Nakamura, K., Nishimura, H., Ochi, A., Papevangelou, T., Parker, J.D., Phan, N.S., Pupilli, F., Richer, J.P., Riffard, Q., Rosa, G., Santos, D., Sawano, T., Sekiya, H., Seong, I.S., Snowden-Ifft, D.P., Spooner, N.J.C., Sugiyama, A., Taishaku, R., Takada, A., Takeda, A., Tanaka, M., Tanimori, T., Thorpe, T.N., Tioukov, V., Tomita, H., Umemoto, A., Vahsen, S.E., Yamaguchi, Y., Yoshimoto, M., and Zayas, E.

Published
2016
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18. An update on the Axion Helioscopes front: current activities at CAST and the IAXO project

Author

Dafni, T., Arik, M., Armengaud, E., Aune, S., Avignone, F.T., Barth, K., Belov, A., Betz, M., Bräuninger, H., Brax, P., Breijnholt, N., Brun, P., Cantatore, G., Carmona, J.M., Carosi, G.P., Caspers, F., Caspi, S., Cetin, S.A., Chelouche, D., Christensen, F.E., Collar, J.I., Dael, A., Davenport, M., Derbin, A.V., Desch, K., Diago, A., Döbrich, B., Dratchnev, I., Dudarev, A., Eleftheriadis, C., Fanourakis, G., Ferrer-Ribas, E., Friedrich, P., Galán, J., García, J.A., Gardikiotis, A., Garza, J.G., Gazis, E.N., Georgiopoulou, E., Geralis, T., Gimeno, B., Giomataris, I., Gninenko, S., Gómez, H., González-Díaz, D., Gruber, E., Guendelman, E., Guthörl, T., Hailey, C.J., Hartmann, R., Hauf, S., Haug, F., Hasinoff, M.D., Hiramatsu, T., Hoffmann, D.H.H., Horns, D., Iguaz, F.J., Irastorza, I.G., Isern, J., Imai, K., Jacoby, J., Jaeckel, J., Jakobsen, A.C., Jakovčić, K., Kaminski, J., Kawasaki, M., Karuza, M., Königsmann, K., Kotthaus, R., Krčmar, M., Kousouris, K., Krieger, C., Kuster, M., Lakić, B., Laurent, J.M., Limousin, O., Lindner, A., Liolios, A., Ljubičić, A., Luzón, G., Matsuki, S., Muratova, V.N., Neff, S., Niinikoski, T., Nones, C., Ortega, I., Papaevangelou, T., Pivovaroff, M.J., Raffelt, G., Redondo, J., Riege, H., Ringwald, A., Rodríguez, A., Rosu, M., Russenschuck, S., Ruz, J., Saikawa, K., Savvidis, I., Sekiguchi, T., Semertzidis, Y.K., Shilon, I., Sikivie, P., Silva, H., Solanki, S.K., Stewart, L., ten Kate, H.H.J., Tomas, A., Troitsky, S., Vafeiadis, T., van Bibber, K., Vedrine, P., Villar, J.A., Vogel, J.K., Walckiers, L., Weltman, A., Wester, W., Yildiz, S.C., and Zioutas, K.

Published
2016
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22. The Next Generation of Axion Helioscopes: The International Axion Observatory (IAXO)

Author

Vogel, J.K., Armengaud, E., Avignone, F.T., Betz, M., Brax, P., Brun, P., Cantatore, G., Carmona, J.M., Carosi, G.P., Caspers, F., Caspi, S., Cetin, S.A., Chelouche, D., Christensen, F.E., Dael, A., Dafni, T., Davenport, M., Derbin, A.V., Desch, K., Diago, A., Döbrich, B., Dratchnev, I., Dudarev, A., Eleftheriadis, C., Fanourakis, G., Ferrer-Ribas, E., Galán, J., García, J.A., Garza, J.G., Geralis, T., Gimeno, B., Giomataris, I., Gninenko, S., Gómez, H., González-Díaz, D., Guendelman, E., Hailey, C.J., Hiramatsu, T., Hoffmann, D.H.H., Horns, D., Iguaz, F.J., Irastorza, I.G., Isern, J., Imai, K., Jakobsen, A.C., Jaeckel, J., Jakovčić, K., Kaminski, J., Kawasaki, M., Karuza, M., Krčmar, M., Kousouris, K., Krieger, C., Lakić, B., Limousin, O., Lindner, A., Liolios, A., Luzón, G., Matsuki, S., Muratova, V.N., Nones, C., Ortega, I., Papaevangelou, T., Pivovaroff, M.J., Raffelt, G., Redondo, J., Ringwald, A., Russenschuck, S., Ruz, J., Saikawa, K., Savvidis, I., Sekiguchi, T., Semertzidis, Y.K., Shilon, I., Sikivie, P., Silva, H., ten Kate, H., Tomas, A., Troitsky, S., Vafeiadis, T., van Bibber, K., Vedrine, P., Villar, J.A., Walckiers, L., Weltman, A., Wester, W., Yildiz, S.C., and Zioutas, K.

Published
2015
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25. Ultra low background Micromegas detectors for BabyIAXO solar axion search

Author

Ferrer-Ribas, E., Altenmüller, K., Biasuzzi, B., Castel, J. F., Cebrián, S., Dafni, T., Desch, K., Díez-Ibañez, D., Galán, J., Galindo, J., García, J. A., Giganon, A., Goblin, C., Irastorza, I. G., Kaminski, J., Luzón, G., Margalejo, C., Mirallas, H., Navick, X. F., Obis, L., de Solórzano, A. Ortiz, von Oy, J., Papaevangelou, T., Pérez, O., Picatoste, E., Ruz, J., Schiffer, T., Schmidt, S., Segui, L., Vogel, J. K., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay

Subjects
Physics - Instrumentation and Detectors, X-ray, detector, screening, photon, FOS: Physical sciences, background, low, Instrumentation and Detectors (physics.ins-det), background, model, IAXO, sensitivity, High Energy Physics - Experiment, observatory, High Energy Physics - Experiment (hep-ex), X-ray, background, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], axion-like particles, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], axion, solar, Micromegas
Abstract

The International AXion Observatory (IAXO) is a large scale axion helioscope that will look for axions and axion-like particles produced in the Sun with unprecedented sensitivity. BabyIAXO is an intermediate experimental stage that will be hosted at DESY (Germany) and that will test all IAXO subsystems serving as a prototype for IAXO but at the same time as a fully-fledged helioscope with potential for discovery. One of the crucial components of the project is the ultra-low background X-ray detectors that will image the X-ray photons produced by axion conversion in the experiment. The baseline detection technology for this purpose are Micromegas (Microbulk) detectors. We will show the quest and the strategy to attain the very challenging levels of background targeted for BabyIAXO that need a multi-approach strategy coming from ground measurements, screening campaigns of components of the detector, underground measurements, background models, in-situ background measurements as well as powerful rejection algorithms. First results from the commissioning of the BabyIAXO prototype will be shown., Comment: 4 pages, 2 figures, submitted for the proceedings of the International Conference on Micro Pattern Gaseous Detectors, December 2022, Israel

Published
2022

30. Recoil imaging for directional detection of dark matter, neutrinos, and physics beyond the Standard Model

Author

O'Hare, C. A. J., Loomba, D., Altenmüller, K., Álvarez-Pol, H., Amaro, F. D., Araújo, H. M., Sierra, D. Aristizabal, Asaadi, J., Attié, D., Aune, S., Awe, C., Ayyad, Y., Baracchini, E., Barbeau, P., Battat, J. B. R., Bell, N. F., Biasuzzi, B., Bignell, L. J., Boehm, C., Bolognino, I., Brunbauer, F. M., Caamaño, M., Cabo, C., Caratelli, D., Carmona, J. M., Castel, J. F., Cebrián, S., Cogollos, C., Collison, D., Costa, E., Dafni, T., Dastgiri, F., Deaconu, C., De Romeri, V., Desch, K., Dho, G., Di Giambattista, F., Díez-Ibáñez, D., D'Imperio, G., Dutta, B., Eldridge, C., Elliott, S. R., Ezeribe, A. C., Fava, A., Felkl, T., Fernández-Domínguez, B., Ribas, E. Ferrer, Flöthner, K. J., Froehlich, M., Galán, J., Galindo, J., García, F., Pascual, J. A. García, Gelli, B. P., Ghrear, M., Giomataris, Y., Gnanvo, K., Gramellini, E., Di Cortona, G. Grilli, Hall-Wilton, R., Harton, J., Hedges, S., Higashino, S., Hill, G., Holanda, P. C., Ikeda, T., Irastorza, I. G., Jackson, P., Janssens, D., Jones, B., Kaminski, J., Katsioulas, I., Kelly, K., Kemmerich, N., Kemp, E., Korandla, H. B., Kraus, H., Lackner, A., Lane, G. J., Lewis, P. M., Lisowska, M., Luzón, G., Lynch, W. A., Maccarrone, G., Mack, K. J., Majewski, P. A., Mano, R. D. P., Margalejo, C., Markoff, D., Marley, T., Marques, D. J. G., Massarczyk, R., Mazzitelli, G., McCabe, C., McKie, L. J., McLean, A. G., McNamara, P. C., Mei, Y., Messina, A., Mills, A. F., Mirallas, H., Miuchi, K., Monteiro, C. M. B., Mosbech, M. R., Muller, H., da Luz, H. Natal, Nakamura, K. D., Natochii, A., Neep, T., Newstead, J. L., Nikolopoulos, K., Obis, L., Oliveri, E., Orlandini, G., de Solórzano, A. Ortiz, von Oy, J., Papaevangelou, T., Pérez, O., Perez-Gonzalez, Y. F., Pfeiffer, D., Phan, N. S., Piacentini, S., Olloqui, E. Picatoste, Pinci, D., Popescu, S., Prajapati, A., Queiroz, F. S., Raaf, J. L., Resnati, F., Ropelewski, L., Roque, R. C., Ruiz-Choliz, E., Rusu, A., Ruz, J., Samarati, J., Santos, E. M., Santos, J. M. F. dos, Sauli, F., Scharenberg, L., Schiffer, T., Schmidt, S., Scholberg, K., Schott, M., Schueler, J., Segui, L., Sekiya, H., Sengupta, D., Slavkovska, Z., Snowden-Ifft, D., Soffitta, P., van Stenis, M., Spooner, N. J. C., Strigari, L., Stuchbery, A. E., Sun, X., Torelli, S., Tilly, E. G., Thomas, A. W., Thorpe, T. N., Urquijo, P., Utrobičić, A., Vahsen, S. E., Veenhof, R., Vogel, J. K., Williams, A. G., Wood, M. H., and Zettlemoyer, J.

Subjects
High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, Cosmology and Nongalactic Astrophysics (astro-ph.CO), High Energy Physics - Phenomenology (hep-ph), Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment
Abstract

Recoil imaging entails the detection of spatially resolved ionization tracks generated by particle interactions. This is a highly sought-after capability in many classes of detector, with broad applications across particle and astroparticle physics. However, at low energies, where ionization signatures are small in size, recoil imaging only seems to be a practical goal for micro-pattern gas detectors. This white paper outlines the physics case for recoil imaging, and puts forward a decadal plan to advance towards the directional detection of low-energy recoils with sensitivity and resolution close to fundamental performance limits. The science case covered includes: the discovery of dark matter into the neutrino fog, directional detection of sub-MeV solar neutrinos, the precision study of coherent-elastic neutrino-nucleus scattering, the detection of solar axions, the measurement of the Migdal effect, X-ray polarimetry, and several other applied physics goals. We also outline the R&D programs necessary to test concepts that are crucial to advance detector performance towards their fundamental limit: single primary electron sensitivity with full 3D spatial resolution at the $\sim$100 micron-scale. These advancements include: the use of negative ion drift, electron counting with high-definition electronic readout, time projection chambers with optical readout, and the possibility for nuclear recoil tracking in high-density gases such as argon. We also discuss the readout and electronics systems needed to scale-up such detectors to the ton-scale and beyond., 77 pages, 20 figures. Submitted to the Proceedings of the US Community Study on the Future of Particle Physics (Snowmass 2021)

Published
2022

31. Recoil imaging for dark matter, neutrinos, and physics beyond the Standard Model

Author

Ciaran O'Hare, Loomba, D., Altenmuller, K., Alvarez-Pol, H., Amaro, F. D., Araujo, H. M., Aristizabal Sierra, D., Asaadi, J., Attie, D., Aune, S., Awe, C., Ayyad, Y., Baracchini, e, Barbeau, P., Battat, J. B. R., Bell, N. F., Biasuzzi, B., Bignell, L. J., Boehm, C., Bolognino, I., Brunbauer, F. M., Caamano, M., Cabo, C., Caratelli, D., Carmona, J. M., Castel, J. F., Cebrián, S., Cogollos, C., Collison, D., Costa, E., Dafni, T., Dastgiri, F., Deaconu, C., Romeri, V., Desch, K., Dho, G., Di Giambattista, F., Dezibánez, D., D Imperio, G., Dutta, B., Eldridge, C., Elliott, S. R., Ezeribe, A. C., Fava, A., Felkl, T., Fernández-Domnguez, B., Ferrer Ribas, E., Flothner, K. J., Froehlich, M., Galán, J., Galindo, J., Garca, F., Garca Pascual, J. A., Gelli, B. P., Ghrear, M., Giomataris, Y., Gnanvo, K., Gramellini, E., Di Cortona, G. Grilli, Hall-Wilton, R., Harton, J., Hedges, S., Higashino, S., Hill, G., Holanda, P. C., Ikeda, T., Irastorza, I. G., Jackson, P., Janssens, D., Jones, B., Kaminski, J., Katsioulas, I., Kelly, K., Kemmerich, N., Kemp, E., Korandla, H. B., Kraus, H., Lackner, A., Lane, G. J., Lewis, P. M., Lisowska, M., Luzón, G., Lynch, W. A., Maccarrone, G., Mack, K. J., Majewski, P. A., Mano, R. D. P., Margalejo, C., Markoff, D., Marley, T., Marques, D. J. G., Massarczyk, R., Mazzitelli, G., Mccabe, C., Mckie, L. J., Mclean, A. G., Mcnamara, P. C., Mei, Y., Messina, A., Mills, A. F., Mirallas, H., Miuchi, K., Monteiro, C. M. B., Mosbech, M. R., Muller, H., Natal Da Luz, H., Nakamura, K. D., Natochii, A., Neep, T., Newstead, J. L., Nikolopoulos, K., Obis, L., Oliveri, E., Orlandini, G., Ortiz de Solórzano, A., Oy, J., Papaevangelou, T., Pérez, O., Perez-Gonzalez, Y. F., Pfeiffer, D., Phan, N. S., Piacentini, S., Picatoste Olloqui, E., Pinci, D., Popescu, S., Prajapati, A., Queiroz, F. S., Raaf, J. L., Resnati, F., Ropelewski, L., Roque, R. C., Ruiz-Choliz, E., Rusu, A., Ruz, J., Samarati, J., Santos, E. M., Dos Santos, J. M. F., Sauli, F., Scharenberg, L., Schiffer, T., Schmidt, S., Scholberg, K., Schott, M., Schueler, J., Segui, L., Sekiya, H., Sengupta, D., Slavkovska, Z., Snowden-Ifft, D., Soffitta, P., Stenis, M., Spooner, N. J. C., Strigari, L., Stuchbery, A. E., Sun, X., Torelli, S., Tilly, E. G., Thomas, A. W., Thorpe, T. N., Urquijo, P., Utrobicic, A., Vahsen, S. E., Veenhof, R., Vogel, J. K., Williams, A. G., Wood, M. H., and Zettlemoyer, J.

Subjects
Astrophysics and Astronomy, Physics::Instrumentation and Detectors, hep-ex, astro-ph.CO, hep-ph, Detectors and Experimental Techniques, physics.ins-det, Particle Physics - Experiment, Particle Physics - Phenomenology
Abstract

Recoil imaging entails the detection of spatially resolved ionization tracks generated by particle interactions. This is a highly sought-after capability in many classes of detector, with broad applications across particle and astroparticle physics. However, at low energies, where ionization signatures are small in size, recoil imaging only seems to be a practical goal for micro-pattern gas detectors. This white paper outlines the physics case for recoil imaging, and puts forward a decadal plan to advance towards the directional detection of low-energy recoils with sensitivity and resolution close to fundamental performance limits. The science case covered includes: the discovery of dark matter into the neutrino fog, directional detection of sub-MeV solar neutrinos, the precision study of coherent-elastic neutrino-nucleus scattering, the detection of solar axions, the measurement of the Migdal effect, X-ray polarimetry, and several other applied physics goals. We also outline the R&D programs necessary to test concepts that are crucial to advance detector performance towards their fundamental limit: single primary electron sensitivity with full 3D spatial resolution at the $\sim$100 micron-scale. These advancements include: the use of negative ion drift, electron counting with high-definition electronic readout, time projection chambers with optical readout, and the possibility for nuclear recoil tracking in high-density gases such as argon. We also discuss the readout and electronics systems needed to scale-up such detectors to the ton-scale and beyond.

Published
2022

33. Benchmarking in the Process of Donation After Brain Death: A Methodology to Identify Best Performer Hospitals

Author

Matesanz, R., Coll, E., Domínguez-Gil, B., de la Rosa, G., Marazuela, R., Arráez, V., Elorrieta, P., Fernández-García, A., Fernández-Renedo, C., Galán, J., Gómez-Marinero, P., Martín-Delagebasala, C., Martín-Jiménez, S., Masnou, N., Salamero, P., Sánchez-Ibáñez, J., Serna, E., Martínez-Soba, F., Pastor-Rodríguez, A., Bouzas, E., and Castro, P.

Published
2012
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34. Phase II trial of miniDOX (reduced dose docetaxel–oxaliplatin–capecitabine) in “suboptimal” patients with advanced gastric cancer (AGC). TTD 08-02

Author

Rivera, F., Massutí, B., Salcedo, M., Sastre, J., Martínez Galán, J., Valladares-Ayerbes, M., Serrano, R., de Paredes, Mª. L. García, Manzano, J. L., Galán, M., Alsina, M., Yuste Izquierdo, A. L., López, C., Díaz-Rubio, E., Conde, V., Reboredo, M., Cano, Mª. T., Pachón, V., and Aranda, E.

Published
2015
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37. CAST Microbulk Micromegas in the Canfranc Underground Laboratory

Author

Tomas, A., Aune, S., Dafni, T., Fanourakis, G., Ferrer-Ribas, E., Galán, J., García, J.A., Gardikiotis, A., Geralis, T., Giomataris, I., Gómez, H., Garza, J.G., Herrera, D.C., Iguaz, F.J., Irastorza, I.G., Luzón, G., Papaevangelou, T., Rodríguez, A., Ruz, J., Seguí, L., Vafeiadis, T., and Yildiz, S.C.

Published
2012
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39. Micromegas for dark matter searches: CAST/IAXO & TREX-DM experiments

Author

Garza J. G., Aune S., Aznar F., Castel J. F., Cebrián S., Dafni T., Ferrer-Ribas E., Galán J., García J. A., Giomataris I., Iguaz F.J., Irastorza I.G., Luzón G., Mirallas H., Papaevangelou T., Peiró A., Tomás A., and Vafeiadis T.

Subjects
Physics, QC1-999
Abstract

The most compelling candidates for Dark Matter to day are WIMPs and axions. The applicability of gasesous Time Projection Chambers (TPCs) with Micromesh Gas Structures (Micromegas) to the search of these particles is explored within this work. Both particles would produce an extremely low rate at very low energies in particle detectors. Micromegas detectors can provide both low background rates and low energy threshold, due to the high granularity, radiopurity and uniformity of the readout. Small (few cm wide) Micromegas detectors are used to image the axion-induced x-ray signal expected in the CERN Axion Solar Telescope (CAST) experiment. We show the background levels obtained in CAST and the prospects to further reduce them to the values required by the Internation Axion Observatory (IAXO). We also present TREX-DM, a scaled-up version of the Micromegas used in axion research, but this time dedicated to the low-mass WIMP detection. TREX-DM is a high-pressure Micromegas-based TPC designed to host a few hundreds of grams of light nuclei (argon or neon) with energy thresholds potentially at the level of 100 eV. The detector is described in detail, as well as the results of the commissioning and characterization phase on surface. Besides, the background model of TREX-DM is presented, along with the anticipated sensitivity of this search, which could go beyond current experimental limits.

Published
2018
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41. Radiopurity of micromegas readout planes

Author

Cebrián, S., Dafni, T., Ferrer-Ribas, E., Galán, J., Giomataris, I., Gómez, H., Iguaz, F.J., Irastorza, I.G., Luzón, G., de Oliveira, R., Rodríguez, A., Seguí, L., Tomás, A., and Villar, J.A.

Published
2011
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42. New micromegas for axion searches in CAST

Author

Dafni, T., Aune, S., Fanourakis, G., Ferrer-Ribas, E., Galán, J., Gardikiotis, A., Geralis, T., Giomataris, I., Gómez, H., Iguaz, F.J., Irastorza, I.G., Luzón, G., Morales, J., Papaevangelou, T., Rodríguez, A., Ruz, J., Tomás, A., Vafeiadis, T., and Yildiz, S.C.

Published
2011
Full Text
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43. The large inner Micromegas modules for the Atlas Muon Spectrometer Upgrade: construction, quality control and characterization

Author

Allard, J., Andari, N., Anfreville, M., Attié, D., Aubernon, E., Aune, S., Bachacou, H., Balli, F., Bauer, F., Beltramelli, J., Bennet, J., Benoit, T., Bervas, H., Bey, T., Bouaziz, S., Boyer, M., Challey, T., Cara, G., Chaleil, T., Chevalérias, T., Coppollani, X., Costa, J., Decock, G., Deliot, F., Denysiuk, D., Desforge, D., Disset, G., Durand, G.A., Durand, R., Elman, J., Ribas, E. Ferrer, Fontaine, M., Formica, A., Galán, J., Gamache, W., Giganon, A., Giraud, J., Giraud, P.F., Glonti, G., Goblin, C., Graffin, P., Guillard, J.C., Hassani, S., Hervé, S., Javello, S., Jeanneau, F., Jourde, D., Jurie, S., Kebbiri, M., Kawamoto, T., Lampoudis, C., Laporte, J.F., Leboeuf, D., Lefevre, M., Lohan, M., Loiseau, C., Magnier, P., Mandjavidze, I., Manjarrés, J., Mas, P., Mur, M., Nikolaidou, R., Peyaud, A., Pierrepont, D., Piret, Y., Ponsot, P., Prono, G., Riallot, M., Rossi, F., Schune, P., Vacher, T., Vandenbroucke, M., Vigier, A., Vuillemin, C., Usseglio, M., Wu, Z., Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay

Subjects
Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, High rate capability, FOS: Physical sciences, Validation tests, quality: monitoring, fabrication, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Detectors and Experimental Techniques, 010306 general physics, Instrumentation, spatial resolution, physics.ins-det, activity report, 010308 nuclear & particles physics, Resistive anode, hep-ex, Instrumentation and Detectors (physics.ins-det), ATLAS, NSW, spectrometer: upgrade, Cosmic bench, High Energy Physics::Experiment, Micromegas, performance, Particle Physics - Experiment, MPGD, muon: spectrometer, HL-LHC
Abstract

The steadily increasing luminosity of the LHC requires an upgrade with high-rate and high-resolution detector technology for the inner end cap of the ATLAS muon spectrometer: the New Small Wheels (NSW). In order to achieve the goal of precision tracking at a hit rate of about 15 kHz/cm$^2$ at the inner radius of the NSW, large area Micromegas quadruplets with 100\,\microns spatial resolution per plane have been produced. % IRFU, from the CEA research center of Saclay, is responsible for the production and validation of LM1 Micromegas modules. The construction, production, qualification and validation of the largest Micromegas detectors ever built are reported here. Performance results under cosmic muon characterisation will also be discussed., To be submitted to NIMA

Published
2021

46. Activities and Perceived Risk of Transmission and Spread of SARS-CoV-2 among Specialists and Residents in a Third Level University Hospital in Spain

Author

Aranaz Andrés, Jesús María, McGee-Laso, A., Galán, J. C., Cantón, Rafael, Mira Gutiérrez, José, Valencia Martín, José Lorenzo, and Universidad de Sevilla. Departamento de Medicina Preventiva y Salud Pública

Subjects
SARS-CoV-2, Risk of transmission, COVID-19, Healthcare workers, Perceived risk
Abstract

This study aims to identify factors related with SARS-CoV-2 infection in physicians and internal residents during the SARS-CoV-2 pandemic at a tertiary hospital in Spain, through a cross- sectional descriptive perception study with analytical components through two questionnaires directed at professionals working at the Ramon y Cajal University Hospital between February and April 2020. In total, 167 professionals formed the study group, and 156 professionals comprised the comparison group. Seventy percent of the professionals perceived a shortage of personal protective equipment (PPE), while 40% perceived a shortage of hand sanitiser, although more than 70% said they used it properly. Soap was more available and had a higher percentage of correct use (73.6–79.5%) (p > 0.05). Hand hygiene was optimal in >70% of professionals according to all five WHO measurements. In the adjusted model (OR; CI95%), belonging to a high-risk specialty (4.45; 1.66–11.91) and the use of public transportation (3.27; 1.87–5.73) remained risk factors. Protective factors were changes of uniform (0.53; 0.32–0.90), sanitation of personal objects before the workday (0.55; 0.31–0.97), and the disinfection of shared material (0.34; 0.19–0.58). We cannot confirm that a shortage or misuse of PPE is a factor in the spread of SARS-CoV-2. Fears and assessments are similar in both groups, but we cannot causally relate them to the spread of infection. The perception of the area of risk is different in both groups, suggesting that more information and education for healthcare workers is needed.

Published
2021

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