Search

Your search keyword '"C. Margalejo"' showing total 21 results
Start Over Author "C. Margalejo"
21 results on '"C. Margalejo"'

1. Background discrimination with a Micromegas detector prototype and veto system for BabyIAXO

Author

K. Altenmüller, J. F. Castel, S. Cebrián, T. Dafni, D. Díez-Ibañez, A. Ezquerro, E. Ferrer-Ribas, J. Galan, J. Galindo, J. A. García, A. Giganon, C. Goblin, I. G. Irastorza, C. Loiseau, G. Luzón, X. F. Navick, C. Margalejo, H. Mirallas, L. Obis, A. Ortiz de Solórzano, T. Papaevangelou, O. Pérez, A. Quintana, J. Ruz, and J. K. Vogel

Subjects
axions, rare event search, TPC (time projection chamber), background discrimination, x-ray detector, ultra low background, Physics, QC1-999
Abstract

In this paper we present measurements performed with a Micromegas X-ray detector setup. The detector is a prototype in the context of the BabyIAXO helioscope, which is under construction to search for an emission of the hypothetical axion particle from the Sun. An important component of such a helioscope is a low background X-ray detector with a high efficiency in the 1–10 keV energy range. The goal of the measurement was to study techniques for background discrimination. In addition to common techniques we used a multi-layer veto system designed to tag cosmic-ray induced neutron background. Over an effective time of 52 days, a background level of 8.6 × 10−7 counts keV−1 cm−2 s−1 was reached in a laboratory at above ground level. This is the lowest background level achieved at surface level. In this paper we present the experimental setup, show simulations of the neutron-induced background, and demonstrate the process to identify background signals in the data. Finally, prospects to reach lower background levels down to 10–7 counts keV−1 cm−2 s−1 are discussed.

Published
2024
Full Text
View/download PDF

2. Search for Dark Matter Axions with CAST-CAPP

Author

C. M. Adair, K. Altenmüller, V. Anastassopoulos, S. Arguedas Cuendis, J. Baier, K. Barth, A. Belov, D. Bozicevic, H. Bräuninger, G. Cantatore, F. Caspers, J. F. Castel, S. A. Çetin, W. Chung, H. Choi, J. Choi, T. Dafni, M. Davenport, A. Dermenev, K. Desch, B. Döbrich, H. Fischer, W. Funk, J. Galan, A. Gardikiotis, S. Gninenko, J. Golm, M. D. Hasinoff, D. H. H. Hoffmann, D. Díez Ibáñez, I. G. Irastorza, K. Jakovčić, J. Kaminski, M. Karuza, C. Krieger, Ç. Kutlu, B. Lakić, J. M. Laurent, J. Lee, S. Lee, G. Luzón, C. Malbrunot, C. Margalejo, M. Maroudas, L. Miceli, H. Mirallas, L. Obis, A. Özbey, K. Özbozduman, M. J. Pivovaroff, M. Rosu, J. Ruz, E. Ruiz-Chóliz, S. Schmidt, M. Schumann, Y. K. Semertzidis, S. K. Solanki, L. Stewart, I. Tsagris, T. Vafeiadis, J. K. Vogel, M. Vretenar, S. Youn, and K. Zioutas

Subjects
Science
Abstract

Haloscopes aim at detecting axions by converting them into photons using high-quality resonant cavities, where the cavity resonance should be tuned with the unknown axion mass. Here, the authors improve exclusion limits using four phase-matched resonant cavities and a fast frequency scanning technique.

Published
2022
Full Text
View/download PDF

3. Conceptual design of BabyIAXO, the intermediate stage towards the International Axion Observatory

Author

The IAXO collaboration, A. Abeln, K. Altenmüller, S. Arguedas Cuendis, E. Armengaud, D. Attié, S. Aune, S. Basso, L. Bergé, B. Biasuzzi, P. T. C. Borges De Sousa, P. Brun, N. Bykovskiy, D. Calvet, J. M. Carmona, J. F. Castel, S. Cebrián, V. Chernov, F. E. Christensen, M. M. Civitani, C. Cogollos, T. Dafní, A. Derbin, K. Desch, D. Díez, M. Dinter, B. Döbrich, I. Drachnev, A. Dudarev, L. Dumoulin, D. D. M. Ferreira, E. Ferrer-Ribas, I. Fleck, J. Galán, D. Gascón, L. Gastaldo, M. Giannotti, Y. Giomataris, A. Giuliani, S. Gninenko, J. Golm, N. Golubev, L. Hagge, J. Hahn, C. J. Hailey, D. Hengstler, P. L. Henriksen, T. Houdy, R. Iglesias-Marzoa, F. J. Iguaz, I. G. Irastorza, C. Iñiguez, K. Jakovčić, J. Kaminski, B. Kanoute, S. Karstensen, L. Kravchuk, B. Lakić, T. Lasserre, P. Laurent, O. Limousin, A. Lindner, M. Loidl, I. Lomskaya, G. López-Alegre, B. Lubsandorzhiev, K. Ludwig, G. Luzón, C. Malbrunot, C. Margalejo, A. Marin-Franch, S. Marnieros, F. Marutzky, J. Mauricio, Y. Menesguen, M. Mentink, S. Mertens, F. Mescia, J. Miralda-Escudé, H. Mirallas, J. P. Mols, V. Muratova, X. F. Navick, C. Nones, A. Notari, A. Nozik, L. Obis, C. Oriol, F. Orsini, A. Ortiz de Solórzano, S. Oster, H. P. Pais Da Silva, V. Pantuev, T. Papaevangelou, G. Pareschi, K. Perez, O. Pérez, E. Picatoste, M. J. Pivovaroff, D. V. Poda, J. Redondo, A. Ringwald, M. Rodrigues, F. Rueda-Teruel, S. Rueda-Teruel, E. Ruiz-Choliz, J. Ruz, E. O. Saemann, J. Salvado, T. Schiffer, S. Schmidt, U. Schneekloth, M. Schott, L. Segui, F. Tavecchio, H. H. J. ten Kate, I. Tkachev, S. Troitsky, D. Unger, E. Unzhakov, N. Ushakov, J. K. Vogel, D. Voronin, A. Weltman, U. Werthenbach, W. Wuensch, and A. Yanes-Díaz

Subjects
Beyond Standard Model, Dark matter, CP violation, Other experiments, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Abstract This article describes BabyIAXO, an intermediate experimental stage of the International Axion Observatory (IAXO), proposed to be sited at DESY. IAXO is a large-scale axion helioscope that will look for axions and axion-like particles (ALPs), produced in the Sun, with unprecedented sensitivity. BabyIAXO is conceived to test all IAXO subsystems (magnet, optics and detectors) at a relevant scale for the final system and thus serve as prototype for IAXO, but at the same time as a fully-fledged helioscope with relevant physics reach itself, and with potential for discovery. The BabyIAXO magnet will feature two 10 m long, 70 cm diameter bores, and will host two detection lines (optics and detector) of dimensions similar to the final ones foreseen for IAXO. BabyIAXO will detect or reject solar axions or ALPs with axion-photon couplings down to g aγ ∼ 1.5 × 10 −11 GeV −1, and masses up to m a ∼ 0.25 eV. BabyIAXO will offer additional opportunities for axion research in view of IAXO, like the development of precision x-ray detectors to identify particular spectral features in the solar axion spectrum, and the implementation of radiofrequency-cavity-based axion dark matter setups.

Published
2021
Full Text
View/download PDF

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

Author

K. Altenmüller, B. Biasuzzi, J.F. Castel, S. Cebrián, T. Dafni, K. Desch, D. Díez-Ibañez, E. Ferrer-Ribas, J. Galan, J. Galindo, J.A. García, I.G. Irastorza, J. Kaminski, G. Luzón, C. Margalejo, H. Mirallas, X.F. Navick, L. Obis, A. Ortiz de Solórzano, J. von Oy, T. Papaevangelou, O. Pérez, J. Ruz, T. Schiffer, S. Schmidt, L. Segui, J.K. Vogel, 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, Dark matter detectors, detector, background, energy resolution, X-ray detectors, Micropattern gaseous detectors, IAXO, low, dark matter, solar, X-ray, observatory, efficiency, ionization chamber, axion, technology, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Instrumentation, Micromegas
Abstract

International audience; BabyIAXO is a helioscope under construction to search for an emission of the axion particle from the Sun. At the same time it serves as an intermediate stage towards the International Axion Observatory (IAXO). An integral component of this experiment is a low background X-ray detector with a high efficiency in the 1–10 keV energy range. Micromegas detectors are considered as baseline technology for BabyIAXO thanks to the relatively high efficiency and very low background level. Other detector technologies developed to reach better energy resolution while maintaining high efficiency and low background level are also under study. In this paper, we review the BabyIAXO design and present the analysis of data taken with the prototype of an IAXO Micromegas detector. A background level of 8.8×10−7counts keV−1cm−2s−1 was reached.

Published
2022

5. Conceptual design of BabyIAXO, the intermediate stage towards the International Axion Observatory

Author

S. Arguedas Cuendis, C. Oriol, J. Castel, D. Voronin, A. Abeln, Olivier Limousin, A. Marin-Franch, Sergey Troitsky, S. Cebrián, D. Gascon, D. D. M. Ferreira, C. J. Hailey, L. Gastaldo, Stefano Basso, R. Iglesias-Marzoa, T. Dafni, K. Altenmüller, L. Segui, Ulrich Werthenbach, D. Hengstler, J. Golm, J. M. Carmona, F.J. Iguaz, Maurizio Giannotti, F. Rueda-Teruel, Leonid Kravchuk, V. S. Pantuev, S. Aune, S. Rueda-Teruel, K. Ludwig, D. Calvet, Joan Mauricio, Igor Tkachev, Klaus Kurt Desch, BayarJon Paul Lubsandorzhiev, E. Ferrer-Ribas, Fabrizio Tavecchio, A. Dudarev, J. P. Mols, Andreas Ringwald, A. A. Nozik, U. Schneekloth, X. F. Navick, Javier Redondo, M. M. Civitani, N. Bykovskiy, E. O. Saemann, Nikita Ushakov, B. Döbrich, O. Pérez, Thomas Papaevangelou, A. Lindner, S. N. Gninenko, B. Kanoute, Eric Armengaud, E. Unzhakov, C. Cogollos, C. Iñiguez, Matthias Mentink, P. Borges de Sousa, Susanne Mertens, Søren Schmidt, Federico Mescia, J. Ruz, Pierre Brun, L. Dumoulin, C. Malbrunot, J. Hahn, V. Chernov, A. Ortiz de Solórzano, K. Perez, Thierry Lasserre, I. Drachnev, S. Karstensen, L. Bergé, Y. Giomataris, L. Obis, E. Picatoste, F. Marutzky, S. Oster, I. Lomskaya, Jordi Salvado, B. Biasuzzi, I. G. Irastorza, Lars Hagge, H. P. Pais Da Silva, Y. Menesguen, J. Kaminski, Walter Wuensch, G. López-Alegre, Alessio Notari, S. Marnieros, Michael J. Pivovaroff, Ivor Fleck, A. V. Derbin, P. Laurent, Finn Erland Christensen, T. Schiffer, N. Golubev, David Attié, P. L. Henriksen, C. Nones, D. Unger, M. Dinter, D.V. Poda, A. Giuliani, C. Margalejo, E. Ruiz-Choliz, Julia Vogel, G. Luzón, Amanda Weltman, T. Houdy, Krešimir Jakovčić, G. Pareschi, D. Díez, A. Yanes-Díaz, Matias Rodrigues, F. Orsini, Matthias Schott, J. Galán, V. N. Muratova, Martin Loidl, Biljana Lakić, H. Mirallas, H. H. J. ten Kate, Jordi Miralda-Escudé, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), IAXO, Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), ANR-19-CE31-0024,DALPS,Déteteurs pour la recherche des particules 'axion-like'(2019), Irastorza, I. G., and IAXO Collaboration

Subjects
Physics - Instrumentation and Detectors, QC770-798, Other experiments, 01 natural sciences, High Energy Physics - Experiment, design [detector], High Energy Physics - Experiment (hep-ex), Observatory, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Other experiment, Detectors and Experimental Techniques, physics.ins-det, Physics, solar [axion], Detector, Instrumentation and Detectors (physics.ins-det), CP violation, Beyond Standard Model, Dark matter, axion-like particles, Astrophysics - Instrumentation and Methods for Astrophysics, Particle Physics - Experiment, Nuclear and High Energy Physics, Particle physics, Astrophysics and Astronomy, FOS: Physical sciences, dark matter, Nuclear and particle physics. Atomic energy. Radioactivity, 0103 physical sciences, ddc:530, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Sensitivity (control systems), 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Axion, detector: design, Helioscope, axion: dark matter, 010308 nuclear & particles physics, hep-ex, DESY, IAXO, sensitivity, optics, Beyond standard model, axion: solar, dark matter [axion], astro-ph.IM
Abstract

This article describes BabyIAXO, an intermediate experimental stage of the International Axion Observatory (IAXO), proposed to be sited at DESY. IAXO is a large-scale axion helioscope that will look for axions and axion-like particles (ALPs), produced in the Sun, with unprecedented sensitivity. BabyIAXO is conceived to test all IAXO subsystems (magnet, optics and detectors) at a relevant scale for the final system and thus serve as prototype for IAXO, but at the same time as a fully-fledged helioscope with relevant physics reach itself, and with potential for discovery. The BabyIAXO magnet will feature two 10 m long, 70 cm diameter bores, and will host two detection lines (optics and detector) of dimensions similar to the final ones foreseen for IAXO. BabyIAXO will detect or reject solar axions or ALPs with axion-photon couplings down to $g_{a\gamma} \sim 1.5 \times 10^{-11}$ GeV$^{-1}$, and masses up to $m_a\sim 0.25$ eV. BabyIAXO will offer additional opportunities for axion research in view of IAXO, like the development of precision x-ray detectors to identify particular spectral features in the solar axion spectrum, and the implementation of radiofrequency-cavity-based axion dark matter setups., Comment: 77 pages, 49 figures. Prepared for submission to JHEP. Third version after referees comments

Published
2021
Full Text
View/download PDF

6. Axion search with BabyIAXO in view of IAXO

Author

Pierre Brun, A. Marin-Franch, S. Aune, C. Iñiguez, G. Luzón, D. Díez, Y. Giomataris, L. Obis, Nikolai Golubev, Igor Tkachev, G. Pareschi, S. Rueda-Teruel, B. Biasuzzi, D. Unger, Marta Civitani, O. Limousin, L. Kravchuk, A. Abeln, K. Altenmüller, Walter Wuensch, Ulrich Werthenbach, Sergey Troitsky, N. Bykovskiy, J.P. Mols, Sergei Gninenko, J. Golm, L. Dumoulin, Amanda Weltman, Matthias Mentink, C. Nones, Krešimir Jakovčić, I. Lomskaya, Javier Redondo, J. Vogel, J. Ruz, I. Drachnev, M. J. Pivovaroff, D.V. Poda, Jordi Miralda-Escudé, Javier Galan, Loredana Gastaldo, T. Lasserre, C. Malbrunot, I. G. Irastorza, Lars Hagge, Nikita Ushakov, P. L. Henriksen, Joan Mauricio, D. Calvet, E. Ruiz-Choliz, V. Chernov, A. Ortiz de Solórzano, T. Papaevangelou, K. Perez, BayarJon Paul Lubsandorzhiev, S. Marnieros, R. Iglesias-Marzoa, J. F. Castel, H. P. Pais Da Silva, S. Schmidt, H. Ten Kate, S. Cebrián, Fabrizio Tavecchio, A. A. Nozik, F. J. Iguaz-Gutierrez, Finn Erland Christensen, Y. Menesguen, David Gascon, T. Schiffer, P. Laurent, V. S. Pantuev, M. R.D. Rodrigues, D. Hengstler, David Attié, C. Margalejo, J. M. Carmona, Jordi Salvado, B. Kanoute, F. Marutzky, Stefano Basso, T. Dafni, S. Arguedas Cuendis, Alexey Dudarev, C. Oriol, S. Oster, Luc Bergé, G. López-Alegre, J. Hahn, Biljana Lakić, U. Schneekloth, H. Mirallas, Maurizio Giannotti, E. Ferrer-Ribas, Charles J. Hailey, X-F. Navick, F. Rueda-Teruel, A. V. Derbin, E. O. Saemann, E. Armengaud, E. Picatoste, Federico Mescia, V. Muratova, Martin Loidl, O. Pérez, D. Voronin, P. Borges de Sousa, K. Ludwig, Klaus Kurt Desch, Babette Döbrich, S. Karstensen, D. D. M. Ferreira, L. Segui, Andreas Ringwald, C. Cogollos, A. Yanes-Díaz, Ivor Fleck, F. Orsini, A. Giuliani, Matthias Schott, Jochen Kaminski, Alessio Notari, M. Dinter, E. Unzhakov, A. Lindner, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Heidelberg University, University of Zaragoza - Universidad de Zaragoza [Zaragoza], European Organization for Nuclear Research (CERN), INAF - Osservatorio Astronomico di Brera (OAB), Istituto Nazionale di Astrofisica (INAF), Moscow Institute of Physics and Technology [Moscow] (MIPT), Danmarks Tekniske Universitet = Technical University of Denmark (DTU), Universitat de Barcelona (UB), National Research Center 'Kurchatov Institute' (NRC KI), Rheinische Friedrich-Wilhelms-Universität Bonn, Deutsches Elektronen-Synchrotron [Hamburg] (DESY), National Space Institute [Lyngby] (DTU Space), University of Siegen, Kirchhoff Institute for Physics, University of Heidelberg, Dept Phys Sci - Barry University, Barry University, Institute for Nuclear Research of Russian Academy of Sciences (INR), Russian Academy of Sciences [Moscow] (RAS), Friedrich-Schiller-Universität = Friedrich Schiller University Jena [Jena, Germany], Universität Siegen [Siegen], Kirchhoff Institute for Physics, Universität Heidelberg [Heidelberg] = Heidelberg University, Centro de Estudios de Física del Cosmos de Aragón, Rudjer Boskovic Institute [Zagreb], Laboratoire National Henri Becquerel (LNHB), Département Métrologie Instrumentation & Information (DM2I), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Département d'instrumentation Numérique (DIN (CEA-LIST)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institució Catalana de Recerca i Estudis Avançats (ICREA), Massachusetts Institute of Technology (MIT), SLAC National Accelerator Laboratory (SLAC), Stanford University, Johannes Gutenberg - Universität Mainz = Johannes Gutenberg University (JGU), Lawrence Livermore National Laboratory (LLNL), University of Cape Town, IAXO collaboration, Technical University of Denmark [Lyngby] (DTU), Universität Heidelberg [Heidelberg], Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST), and Johannes Gutenberg - Universität Mainz (JGU)

Subjects
Particle physics, Physics - Instrumentation and Detectors, solar axion, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], experimental methods, Dark matter, FOS: Physical sciences, 7. Clean energy, String (physics), Standard Model, axion helioscope, design [detector], International Axion Observatory (IAXO), Observatory, Peccei-Quinn mechanism, Dark Matter, detector design, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Detectors and Experimental Techniques, Axion, sun-tracking systems, physics.ins-det, activity report, detector: design, Physics, instrumentation, Helioscope, Large Hadron Collider, detector, solar [axion], DESY, Instrumentation and Detectors (physics.ins-det), [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], IAXO, magnet, optics, axion: solar
Abstract

Axions are a natural consequence of the Peccei-Quinn mechanism, the most compelling solution to the strong-CP problem. Similar axion-like particles (ALPs) also appear in a number of possible extensions of the Standard Model, notably in string theories. Both axions and ALPs are very well motivated candidates for Dark Matter, and in addition, they would be copiously produced at the sun's core. A relevant effort during the last decade has been the CAST experiment at CERN, the most sensitive axion helioscope to-date. The International Axion Observatory (IAXO) is a large-scale 4th generation helioscope. As its primary physics goal, IAXO will look for solar axions or ALPs with a signal to background ratio of about 5 orders of magnitude higher than CAST. Recently the IAXO collaboration has proposed and intermediate experimental stage, BabyIAXO, conceived to test all IAXO subsystems (magnet, optics, detectors and sun-tracking systems) at a relevant scale for the final system and thus serve as pathfinder for IAXO but at the same time as a fully-fledged helioscope with record and relevant physics reach in itself with potential for discovery. BabyIAXO was endorsed by the Physics Review committee of DESY last May 2019. Here we will review the status and prospects of BabyIAXO and its potential to probe the most physics motivated regions of the axion & ALPs parameter space., 6 pages, ICHEP 2020 Virtual conference

Published
2020
Full Text
View/download PDF

7. The TREX-DM experiment at the Canfranc Underground Laboratory

Author

S. Cebrián, A. Peiró, A. Ortiz de Solórzano, I. G. Irastorza, E. Ruiz-Choliz, J. Galán, G. Luzón, T. Dafni, H. Mirallas, C. Margalejo, and J. Castel

Subjects
Physics, History, Physics - Instrumentation and Detectors, 010308 nuclear & particles physics, Canfranc Underground Laboratory, Dark matter, FOS: Physical sciences, MicroMegas detector, Instrumentation and Detectors (physics.ins-det), Astrophysics - Astrophysics of Galaxies, 01 natural sciences, High Energy Physics - Experiment, Computer Science Applications, Education, Nuclear physics, High Energy Physics - Experiment (hep-ex), Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, 010306 general physics
Abstract

TREX-DM (TPC Rare Event eXperiment for Dark Matter) is intended to look for low mass WIMPs in the Canfranc Underground Laboratory (LSC) in Spain, using light elements (Ne, Ar) as target in a high pressure TPC equipped with Micromegas readouts. Here, a description of the detector, the first results from commissioning data and the expected sensitivity from the developed background model are briefly presented., Comment: TAUP2019 proceedings

Published
2020

8. [Peritonsillar abscess: treatment guidelines]

Author

C, Margalejo, J, Soteras, P, Melgarejo, A, Ruiz, J C, Fortuny, and V, Palomar

Subjects
Hospitalization, Palatine Tonsil, Humans, Prospective Studies, Length of Stay, Intraoperative Complications, Abscess, Anti-Bacterial Agents
Abstract

A prospective study was carried out on 25 patients showing symptoms suggestive of peritonsillar abscess. Twelve patients were treated with i.v. antibiotics and three months later underwent tonsillectomy. Thirteen patients underwent acute tonsillectomy within 24-48 hours. In order to evaluate the benefits of acute tonsillectomy we compared three parameters; operation length, intraoperative bleeding and overall length of hospitalization.

Published
1995

9. [Inverted papillomas of the nasal sinuses]

Author

V, Palomar, J, Soteras, P, Melgarejo, J C, Fortuny, A, Ruiz, and C, Margalejo

Subjects
Adult, Male, Papilloma, Inverted, Paranasal Sinuses, Humans, Female, Middle Aged, Neoplasm Recurrence, Local, Tomography, X-Ray Computed, Paranasal Sinus Neoplasms, Aged
Abstract

After reviewing the Arnau de Vilanova Hospital's records, a total of ten cases of inverted papillomas were found. Nasal obstruction was present in 100% of the cases. External surgery was performed in 70% of these patients, finding that in 50% of them, the real size of the tumor was smaller than that show in the radiological study. After surgical treatment, only one of the patients developed a malignant tumor. Incidence of papilloma recurrence was 30%.

Published
1995

10. [Lymphoepithelioma of the larynx]

Author

A, Ruiz Giner, V, Palomar, E, Sarroca, C, Margalejo, J, Soteras, and R, Egido

Subjects
Diagnosis, Differential, Male, Hypopharynx, Pharyngostomy, Carcinoma, Squamous Cell, Humans, Larynx, Middle Aged, Prognosis, Laryngeal Neoplasms, Epithelium
Abstract

Non-nasopharyngeal Lymphoepithelioma is a tumor of undifferentiated non-keratinizing cells enclosed in an lymphocytic stroma. The lymphoid tissue does not participate in the tumor process. Its tendency is to precociously spreading in the lymph nodes and viscera, but shows a good radiotherapeutic response. Unlike the nasopharyngeal lymphoepithelioma there is no etiological relationship with the Epstein-Barr virus, in spite of the histological similitudes, therefore the pathogenesis must be different in each. Discrimination between lymphoepithelioma and other neoplasms of the epithelial lineage is important in order to indicate the treatment and also to provide prognostic information.

Published
1993

11. [Cervical cystic hygroma]

Author

C, Margalejo, A, Ruiz, J, Soteras, R, Ejido, and V, Palomar

Subjects
Diagnosis, Differential, Lymphangioma, Head and Neck Neoplasms, Humans, Female, Child, Neck
Abstract

Hygroma being a rare overgrowth the AA. of the paper consider interesting the report of a case sitting in the neck, diagnosed and treated at Arnau de Vilanova Hospital. Memento concerning this entity.

Published
1992

12. [Review of ORL manifestations in AIDS. Case series at the Arnau de Vilanova Hospital, Lleida]

Author

J, Soteras, V, Palomar, A, Ruiz Giner, C, Margalejo, J C, Fortuny, E, Sarroca, M, Falguera, and R, Egido

Subjects
Adult, Male, Acquired Immunodeficiency Syndrome, Candidiasis, Herpes Simplex, Pharyngeal Diseases, Esophageal Diseases, Mastoiditis, Laryngeal Diseases, Hypopharynx, Otorhinolaryngologic Diseases, Candidiasis, Oral, Risk Factors, Humans, Female, Otitis, Child, Lymphatic Diseases, Sarcoma, Kaposi, Ear Neoplasms
Abstract

The majority of patients suffering AIDS-syndrome present with ENT aspects, being the most prevalent lateral adenopathy of the neck firstly, followed by thrush, pharyngo-esophageal candidiasis and herpes simplex. Differences regarding the distribution in percentage in risk groups are signaled by the AA. between their own statistics and those of the americans writers.

Published
1992

13. [Recurrent polychondritis]

Author

A, Ruiz Giner, C, Margalejo, J C, Fortuny, and V, Palomar

Subjects
Adult, Otorhinolaryngologic Diseases, Humans, Female, Polychondritis, Relapsing
Abstract

The interest of the relapsing polychondritis is specially due to its otolaryngological implications. The case reported evolved favourably and responded fairish to the corticoidtherapy. Nevertheless an assidous follow-up will be wise in order to stablish the pronostic in view of the outbreacks of the illness. The AA. compare the own case with others referred to in the literature.

Published
1991

15. Search for Dark Matter Axions with CAST-CAPP.

Author

Adair CM, Altenmüller K, Anastassopoulos V, Arguedas Cuendis S, Baier J, Barth K, Belov A, Bozicevic D, Bräuninger H, Cantatore G, Caspers F, Castel JF, Çetin SA, Chung W, Choi H, Choi J, Dafni T, Davenport M, Dermenev A, Desch K, Döbrich B, Fischer H, Funk W, Galan J, Gardikiotis A, Gninenko S, Golm J, Hasinoff MD, Hoffmann DHH, Díez Ibáñez D, Irastorza IG, Jakovčić K, Kaminski J, Karuza M, Krieger C, Kutlu Ç, Lakić B, Laurent JM, Lee J, Lee S, Luzón G, Malbrunot C, Margalejo C, Maroudas M, Miceli L, Mirallas H, Obis L, Özbey A, Özbozduman K, Pivovaroff MJ, Rosu M, Ruz J, Ruiz-Chóliz E, Schmidt S, Schumann M, Semertzidis YK, Solanki SK, Stewart L, Tsagris I, Vafeiadis T, Vogel JK, Vretenar M, Youn S, and Zioutas K

Abstract

The CAST-CAPP axion haloscope, operating at CERN inside the CAST dipole magnet, has searched for axions in the 19.74 μeV to 22.47 μeV mass range. The detection concept follows the Sikivie haloscope principle, where Dark Matter axions convert into photons within a resonator immersed in a magnetic field. The CAST-CAPP resonator is an array of four individual rectangular cavities inserted in a strong dipole magnet, phase-matched to maximize the detection sensitivity. Here we report on the data acquired for 4124 h from 2019 to 2021. Each cavity is equipped with a fast frequency tuning mechanism of 10 MHz/ min between 4.774 GHz and 5.434 GHz. In the present work, we exclude axion-photon couplings for virialized galactic axions down to g aγγ  = 8 × 10 -14 GeV -1 at the 90% confidence level. The here implemented phase-matching technique also allows for future large-scale upgrades., (© 2022. The Author(s).)

Published
2022
Full Text
View/download PDF

16. [Peritonsillar abscess: treatment guidelines].

Author

Margalejo C, Soteras J, Melgarejo P, Ruiz A, Fortuny JC, and Palomar V

Subjects
Abscess drug therapy, Abscess surgery, Anti-Bacterial Agents therapeutic use, Hospitalization, Humans, Intraoperative Complications, Length of Stay, Prospective Studies, Abscess pathology, Palatine Tonsil pathology, Palatine Tonsil surgery
Abstract

A prospective study was carried out on 25 patients showing symptoms suggestive of peritonsillar abscess. Twelve patients were treated with i.v. antibiotics and three months later underwent tonsillectomy. Thirteen patients underwent acute tonsillectomy within 24-48 hours. In order to evaluate the benefits of acute tonsillectomy we compared three parameters; operation length, intraoperative bleeding and overall length of hospitalization.

Published
1995

17. [Inverted papillomas of the nasal sinuses].

Author

Palomar V, Soteras J, Melgarejo P, Fortuny JC, Ruiz A, and Margalejo C

Subjects
Adult, Aged, Female, Humans, Male, Middle Aged, Neoplasm Recurrence, Local, Papilloma, Inverted diagnosis, Paranasal Sinus Neoplasms diagnosis, Tomography, X-Ray Computed, Papilloma, Inverted pathology, Papilloma, Inverted surgery, Paranasal Sinus Neoplasms pathology, Paranasal Sinus Neoplasms surgery, Paranasal Sinuses pathology, Paranasal Sinuses surgery
Abstract

After reviewing the Arnau de Vilanova Hospital's records, a total of ten cases of inverted papillomas were found. Nasal obstruction was present in 100% of the cases. External surgery was performed in 70% of these patients, finding that in 50% of them, the real size of the tumor was smaller than that show in the radiological study. After surgical treatment, only one of the patients developed a malignant tumor. Incidence of papilloma recurrence was 30%.

Published
1995

18. [Lymphoepithelioma of the larynx].

Author

Ruiz Giner A, Palomar V, Sarroca E, Margalejo C, Soteras J, and Egido R

Subjects
Carcinoma, Squamous Cell diagnosis, Carcinoma, Squamous Cell surgery, Diagnosis, Differential, Epithelium pathology, Humans, Hypopharynx pathology, Laryngeal Neoplasms diagnosis, Laryngeal Neoplasms surgery, Larynx surgery, Male, Middle Aged, Pharyngostomy, Prognosis, Carcinoma, Squamous Cell pathology, Laryngeal Neoplasms pathology, Larynx pathology
Abstract

Non-nasopharyngeal Lymphoepithelioma is a tumor of undifferentiated non-keratinizing cells enclosed in an lymphocytic stroma. The lymphoid tissue does not participate in the tumor process. Its tendency is to precociously spreading in the lymph nodes and viscera, but shows a good radiotherapeutic response. Unlike the nasopharyngeal lymphoepithelioma there is no etiological relationship with the Epstein-Barr virus, in spite of the histological similitudes, therefore the pathogenesis must be different in each. Discrimination between lymphoepithelioma and other neoplasms of the epithelial lineage is important in order to indicate the treatment and also to provide prognostic information.

Published
1993

19. [Review of ORL manifestations in AIDS. Case series at the Arnau de Vilanova Hospital, Lleida].

Author

Soteras J, Palomar V, Ruiz Giner A, Margalejo C, Fortuny JC, Sarroca E, Falguera M, and Egido R

Subjects
Adult, Candidiasis etiology, Candidiasis, Oral etiology, Child, Ear Neoplasms etiology, Esophageal Diseases etiology, Female, Herpes Simplex etiology, Humans, Hypopharynx, Laryngeal Diseases etiology, Lymphatic Diseases etiology, Male, Mastoiditis etiology, Otitis etiology, Pharyngeal Diseases etiology, Risk Factors, Sarcoma, Kaposi etiology, Acquired Immunodeficiency Syndrome complications, Otorhinolaryngologic Diseases etiology
Abstract

The majority of patients suffering AIDS-syndrome present with ENT aspects, being the most prevalent lateral adenopathy of the neck firstly, followed by thrush, pharyngo-esophageal candidiasis and herpes simplex. Differences regarding the distribution in percentage in risk groups are signaled by the AA. between their own statistics and those of the americans writers.

Published
1992

20. [Cervical cystic hygroma].

Author

Margalejo C, Ruiz A, Soteras J, Ejido R, and Palomar V

Subjects
Child, Diagnosis, Differential, Female, Humans, Neck pathology, Head and Neck Neoplasms pathology, Head and Neck Neoplasms surgery, Lymphangioma pathology, Lymphangioma surgery
Abstract

Hygroma being a rare overgrowth the AA. of the paper consider interesting the report of a case sitting in the neck, diagnosed and treated at Arnau de Vilanova Hospital. Memento concerning this entity.

Published
1992

21. [Recurrent polychondritis].

Author

Ruiz Giner A, Margalejo C, Fortuny JC, and Palomar V

Subjects
Adult, Female, Humans, Otorhinolaryngologic Diseases diagnosis, Polychondritis, Relapsing diagnosis
Abstract

The interest of the relapsing polychondritis is specially due to its otolaryngological implications. The case reported evolved favourably and responded fairish to the corticoidtherapy. Nevertheless an assidous follow-up will be wise in order to stablish the pronostic in view of the outbreacks of the illness. The AA. compare the own case with others referred to in the literature.

Published
1991

Catalog

Books, media, physical & digital resources
See catalog results