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29 results on '"Margalejo, C."'

1. A new upper limit on the axion-photon coupling with an extended CAST run with a Xe-based Micromegas detector

Author

CAST Collaboration, Altenmüller, K., Anastassopoulos, V., Arguedas-Cuendis, S., Aune, S., Baier, J., Barth, K., Bräuninger, H., Cantatore, G., Caspers, F., Castel, J. F., Çetin, S. A., Christensen, F., Cogollos, C., Dafni, T., Davenport, M., Decker, T. A., Desch, K., Díez-Ibáñez, D., Döbrich, B., Ferrer-Ribas, E., Fischer, H., Funk, W., Galán, J., García, J. A., Gardikiotis, A., Giomataris, I., Golm, J., Hailey, C. H., Hasinoff, M. D., Hoffmann, D. H. H., Irastorza, I. G., Jacoby, J., Jakobsen, A. C., Jakovčić, K., Kaminski, J., Karuza, M., Kostoglou, S., Krieger, C., Lakić, B., Laurent, J. M., Luzón, G., Malbrunot, C., Margalejo, C., Maroudas, M., Miceli, L., Mirallas, H., Navarro, P., Obis, L., Özbey, A., Özbozduman, K., Papaevangelou, T., Pérez, O., Pivovaroff, M. J., Rosu, M., Ruiz-Chóliz, E., Ruz, J., Schmidt, S., Schumann, M., Semertzidis, Y. K., Solanki, S. K., Stewart, L., Vafeiadis, T., Vogel, J. K., and Zioutas, K.

Subjects
High Energy Physics - Experiment
Abstract

Hypothetical axions provide a compelling explanation for dark matter and could be emitted from the hot solar interior. The CERN Axion Solar Telescope (CAST) has been searching for solar axions via their back conversion to X-ray photons in a 9-T 10-m long magnet directed towards the Sun. We report on an extended run with the IAXO (International Axion Observatory) pathfinder detector, doubling the previous exposure time. The detector was operated with a xenon-based gas mixture for part of the new run, providing technical insights for future detector configurations in IAXO. No counts are detected in the 95\% signal-encircling region during the new run, while one is expected. The new data improve the axion-photon coupling limit to 5.7$\times 10^{-11}\,$GeV$^{-1}$ at 95\% C.L., the most restrictive experimental limit to date., Comment: 8 pages, 4 figures (plus 6 pages, 10 figures of supplemental material) Corresponding authors: C. Margalejo (cmargalejo@unizar.es) and J. Ruz (Jaime.Ruz@cern.ch)

Published
2024

2. The daily modulations and broadband strategy in axion searches. An application with CAST-CAPP detector

Author

Adair, C. M., Altenmüller, K., Anastassopoulos, V., Cuendis, S. Arguedas, Baier, J., Barth, K., Belov, A., Bozicevic, D., Bräuninger, H., Cantatore, G., Caspers, F., Castel, J. F., Çetin, S. A., 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, M. D., Hoffmann, D. H. H., Ibáñez, D. Díez, Irastorza, I. G., Jakovčić, K., Kaminski, J., Karuza, M., Krieger, C., Kutlu, Ç., Lakić, B., Laurent, J. M., Lee, J., Lee, S., Luzón, G., Margalejo, C., Maroudas, M., Miceli, L., Mirallas, H., Obis, L., Özbey, A., Özbozduman, K., Pivovaroff, M. J., Rosu, M., Ruz, J., Ruiz-Chóliz, E., Schmidt, S., Semertzidis, Y. K., Solanki, S. K., Stewart, L., Tsagris, I., Vafeiadis, T., Vogel, J. K., Vretenar, M., Youn, S., Zhitnitsky, A., and Zioutas, K.

Subjects
High Energy Physics - Experiment, Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Phenomenology, Physics - Instrumentation and Detectors
Abstract

It has been previously advocated that the presence of the daily and annual modulations of the axion flux on the Earth's surface may dramatically change the strategy of the axion searches. The arguments were based on the so-called Axion Quark Nugget (AQN) dark matter model which was originally put forward to explain the similarity of the dark and visible cosmological matter densities $\Omega_{\rm dark}\sim \Omega_{\rm visible}$. In this framework, the population of galactic axions with mass $ 10^{-6} {\rm eV}\lesssim m_a\lesssim 10^{-3}{\rm eV}$ and velocity $\langle v_a\rangle\sim 10^{-3} c$ will be accompanied by axions with typical velocities $\langle v_a\rangle\sim 0.6 c$ emitted by AQNs. Furthermore, in this framework, it has also been argued that the AQN-induced axion daily modulation (in contrast with the conventional WIMP paradigm) could be as large as $(10-20)\%$, which represents the main motivation for the present investigation. We argue that the daily modulations along with the broadband detection strategy can be very useful tools for the discovery of such relativistic axions. The data from the CAST-CAPP detector have been used following such arguments. Unfortunately, due to the dependence of the amplifier chain on temperature-dependent gain drifts and other factors, we could not conclusively show the presence or absence of a dark sector-originated daily modulation. However, this proof of principle analysis procedure can serve as a reference for future studies., Comment: 18 pages, 8 figures

Published
2024

3. Using Micromegas detectors for direct dark matter searches: challenges and perspectives

Author

Altenmueller, K., Antolin, ., Calvet, D., Candon, F. R., Castel, J., Cebrian, S., Cogollos, C., Dafni, T., Ibanez, D. Diez, Ferrer-Ribas, E., Galan, J., Garcia, J. A., Gomez, H., Gu, Y., Ezquerro, A., Irastorza, I. G, Luzon, G., Margalejo, C., Mirallas, H., Obis, L., de Solorzano, A. Ortiz, Papaevangelou, T., Perez, O., Picatoste, E., Porron, J., Puyuelo, M. J., Quintana, A., Ruiz-Choliz, E., Ruz, J., and Vogel, J.

Subjects
Physics - Instrumentation and Detectors
Abstract

Gas time projection chambers (TPCs) with Micromegas pixelated readouts are being used in dark matter searches and other rare event searches, due to their potential in terms of low background levels, energy and spatial resolution, gain, and operational stability. Moreover, these detectors can provide precious features,such as topological information, allowing for event directionality and powerful signal-background discrimination. The Micromegas technology of the microbulk type is particularly suited to low-background applications and is being exploited by detectors for CAST and IAXO (solar axions) and TREX-DM (low-mass WIMPs) experiments. Challenges for the future include reducing intrinsic background levels, reaching lower energy detection levels, and technical issues such as robustness of detector, new design choices, novel gas mixtures and operation points, scaling up to larger detector sizes, handling large readout granularity, etc. We report on the status and prospects of the development ongoing in the context of IAXO and TREX-DM experiments, pointing to promising perspectives for the use of Micromegas detectors in directdark matter searches

Published
2024

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

Author

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

Subjects
Physics - Instrumentation and Detectors
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 cosmogenic neutron background. Over an effective time of 52 days, a background level of $8.6 \times 10^{-7}\,\text{counts keV}^{-1}\,\text{cm}^{-2} \, \text{s}^{-1}$ 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 $10^{-7} \, \text{counts keV}^{-1} \, \text{cm}^{-2} \, \text{s}^{-1}$ will be discussed.

Published
2024

5. 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., and Vogel, J. K.

Subjects
High Energy Physics - Experiment, Physics - Instrumentation and Detectors
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
2023

6. Purification Efficiency and Radon Emanation of Gas Purifiers used with Pure and Binary Gas Mixtures for Gaseous Dark Matter Detectors

Author

Altenmüller, Castel, J. F., Cebrián, S., Dafní, T., Díez-Ibáñez, D., Galán, J., Galindo, J., García, J. A., Irastorza, I. G., Katsioulas, I., Knights, P., Luzón, G., Manthos, I., Margalejo, C., Matthews, J., Mavrokoridis, K., Mirallas, H., Neep, T., Nikolopoulos, K., Obis, L., de Solórzano, A. Ortiz, Pérez, O., Philippou, B., and Ward, R.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract

Rare event searches require extreme radiopurity in all detector components. This includes the active medium, which in the case of gaseous detectors, is the operating gas. The gases used typically include noble gas mixtures with molecular quenchers. Purification of these gases is required to achieve the desired detector performance, however, purifiers are known to emanate 222 Rn, which is a potential source of background. Several purifiers are studied for their O 2 and H 2 O purification efficiency and Rn emanation rates, aiming to identify the lowest-Rn options. Furthermore, the absorption of quenchers by the purifiers is assessed when used in a recirculating closed-loop gas system., Comment: 3 pages, 4 figures. Contribution to 2021 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)

Published
2022
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7. Search for Dark Matter Axions with CAST-CAPP

Author

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

Subjects
High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

The CAST-CAPP axion haloscope, operating at CERN inside the CAST dipole magnet, has searched for axions in the 19.74 $\mu$eV to 22.47 $\mu$eV 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 $g_{a{\gamma}{\gamma}} = 8 \times {10^{-14}}$ $GeV^{-1}$ at the 90% confidence level. The here implemented phase-matching technique also allows for future large-scale upgrades., Comment: 24 pages, 5 figures, Published version available with Open Access at https://www.nature.com/articles/s41467-022-33913-6

Published
2022
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8. 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
Physics - Instrumentation and Detectors, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment, High Energy 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., Comment: 77 pages, 20 figures. Submitted to the Proceedings of the US Community Study on the Future of Particle Physics (Snowmass 2021)

Published
2022

9. Conceptual Design of BabyIAXO, the intermediate stage towards the International Axion Observatory

Author

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

Subjects
Physics - Instrumentation and Detectors, Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment
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
2020

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

Author

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

Subjects
Astrophysics - Astrophysics of Galaxies, High Energy Physics - Experiment, Physics - Instrumentation and Detectors
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
2019
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11. 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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12. Background discrimination with a Micromegas detector prototype and veto system for BabyIAXO

Author

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

Published
2024
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13. Ultra low background Micromegas detectors for BabyIAXO solar axion search

Author

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

Published
2023
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14. Search for Dark Matter Axions with CAST-CAPP

Author

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

Published
2022
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15. 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

16. 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

17. Purification Efficiency and Radon Emanation of Gas Purifiers used with Pure and Binary Gas Mixtures for Gaseous Dark Matter Detectors

Author

Altenmuller, K., primary, Castel, J. F., additional, Cebrian, S., additional, Dafni, T., additional, Diez-Ibanez, D., additional, Galan, J., additional, Galindo, J., additional, Garcia, J. A., additional, Irastorza, I. G., additional, Katsioulas, I., additional, Knights, P., additional, Luzon, G., additional, Manthos, I., additional, Margalejo, C., additional, Matthews, J., additional, Mavrokoridis, K., additional, Mirallas, H., additional, Neep, T., additional, Nikolopoulos, K., additional, Obis, L., additional, Ortiz de Solorzano, A., additional, Perez, O., additional, Philippou, B., additional, and Ward, R., additional

Published
2021
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18. Axion search with BabyIAXO in view of IAXO

Author

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

Published
2021
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19. The TREX-DM experiment at the Canfranc Underground Laboratory

Author

Castel, J, primary, Cebrián, S, additional, Dafni, T, additional, Galán, J, additional, Irastorza, IG, additional, Luzón, G, additional, Margalejo, C, additional, Mirallas, H, additional, Ortiz de Solórzano, A, additional, Peiró, A, additional, and Ruiz-Chóliz, E, additional

Published
2020
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20. Physics potential of the International Axion Observatory (IAXO)

Author

Armengaud, E., primary, Attié, D., additional, Basso, S., additional, Brun, P., additional, Bykovskiy, N., additional, Carmona, J.M., additional, Castel, J.F., additional, Cebrián, S., additional, Cicoli, M., additional, Civitani, M., additional, Cogollos, C., additional, Conlon, J.P., additional, Costa, D., additional, Dafni, T., additional, Daido, R., additional, Derbin, A.V., additional, Descalle, M.A., additional, Desch, K., additional, Dratchnev, I.S., additional, Döbrich, B., additional, Dudarev, A., additional, Ferrer-Ribas, E., additional, Fleck, I., additional, Galán, J., additional, Galanti, G., additional, Garrido, L., additional, Gascon, D., additional, Gastaldo, L., additional, Germani, C., additional, Ghisellini, G., additional, Giannotti, M., additional, Giomataris, I., additional, Gninenko, S., additional, Golubev, N., additional, Graciani, R., additional, Irastorza, I.G., additional, Jakovčić, K., additional, Kaminski, J., additional, Krčmar, M., additional, Krieger, C., additional, Lakić, B., additional, Lasserre, T., additional, Laurent, P., additional, Limousin, O., additional, Lindner, A., additional, Lomskaya, I., additional, Lubsandorzhiev, B., additional, Luzón, G., additional, Marsh, M. C. D., additional, Margalejo, C., additional, Mescia, F., additional, Meyer, M., additional, Miralda-Escudé, J., additional, Mirallas, H., additional, Muratova, V.N., additional, Navick, X.F., additional, Nones, C., additional, Notari, A., additional, Nozik, A., additional, de Solórzano, A. Ortiz, additional, Pantuev, V., additional, Papaevangelou, T., additional, Pareschi, G., additional, Perez, K., additional, Picatoste, E., additional, Pivovaroff, M.J., additional, Redondo, J., additional, Ringwald, A., additional, Roncadelli, M., additional, Ruiz-Chóliz, E., additional, Ruz, J., additional, Saikawa, K., additional, Salvadó, J., additional, Samperiz, M.P., additional, Schiffer, T., additional, Schmidt, S., additional, Schneekloth, U., additional, Schott, M., additional, Silva, H., additional, Tagliaferri, G., additional, Takahashi, F., additional, Tavecchio, F., additional, Kate, H. ten, additional, Tkachev, I., additional, Troitsky, S., additional, Unzhakov, E., additional, Vedrine, P., additional, Vogel, J.K., additional, Weinsheimer, C., additional, Weltman, A., additional, and Yin, W., additional

Published
2019
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21. Conceptual Design of BabyIAXO, the intermediate stage towards the International Axion Observatory

Author

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

Subjects
7. Clean energy
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.

22. Axion search with BabyIAXO in view of IAXO

Author

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

Subjects
experimental methods, axion: solar, IAXO, 7. Clean energy, activity report, detector: design
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.

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

Author

Abeln, A., Altenm��ller, K., Arguedas Cuendis, S., Armengaud, E., Atti��, D., Aune, S., Basso, S., Berg��, L., Biasuzzi, B., Borges De Sousa, P. T. C., Brun, P., Bykovskiy, N., Calvet, D., Carmona, J. M., Castel, J. F., Cebri��n, S., Chernov, V., Christensen, F. E., Civitani, M. M., Cogollos, C., Dafn��, T., Derbin, A., Desch, K., D��ez, D., Dinter, M., D��brich, B., Drachnev, I., Dudarev, A., Dumoulin, L., Ferreira, D. D. M., Ferrer-Ribas, E., Fleck, I., Gal��n, J., Gasc��n, D., Gastaldo, L., Giannotti, M., Giomataris, Y., Giuliani, A., Gninenko, S., Golm, J., Golubev, N., Hagge, L., Hahn, J., Hailey, C. J., Hengstler, D., Henriksen, P. L., Houdy, T., Iglesias-Marzoa, R., Iguaz, F. J., Irastorza, I. G., I��iguez, C., Jakov��i��, K., Kaminski, J., Kanoute, B., Karstensen, S., Kravchuk, L., Laki��, B., Lasserre, T., Laurent, P., Limousin, O., Lindner, A., Loidl, M., Lomskaya, I., L��pez-Alegre, G., Lubsandorzhiev, B., Ludwig, K., Luz��n, G., Malbrunot, C., Margalejo, C., Marin-Franch, A., Marnieros, S., Marutzky, F., Mauricio, J., Menesguen, Y., Mentink, M., Mertens, S., Mescia, F., Miralda-Escud��, J., Mirallas, H., Mols, J. P., Muratova, V., Navick, X. F., Nones, C., Notari, A., Nozik, A., Obis, L., Oriol, C., Orsini, F., Ortiz de Sol��rzano, A., Oster, S., Pais Da Silva, H. P., Pantuev, V., Papaevangelou, T., Pareschi, G., Perez, K., P��rez, O., Picatoste, E., Pivovaroff, M. J., Poda, D. V., Redondo, J., Ringwald, A., Rodrigues, M., Rueda-Teruel, F., Rueda-Teruel, S., Ruiz-Choliz, E., Ruz, J., Saemann, E. O., Salvado, J., Schiffer, T., Schmidt, S., Schneekloth, U., Schott, M., Segui, L., Tavecchio, F., ten Kate, H. H. J., Tkachev, I., Troitsky, S., Unger, D., Unzhakov, E., Ushakov, N., Vogel, J. K., Voronin, D., Weltman, A., Werthenbach, U., Wuensch, W., and Yanes-D��az, A.

Subjects
axion: dark matter, CP violation, Beyond Standard Model, Dark matter, axion-like particles, Other experiments, axion: solar, IAXO, sensitivity, 7. Clean energy, optics, detector: design
Abstract

Journal of high energy physics 05(5), 137 (2021). doi:10.1007/JHEP05(2021)137, 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$_{a��}$ ��� 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.[graphic not available: see fulltext], Published by SISSA, [Trieste]

24. [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

25. [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

26. [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

27. [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

28. [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

29. [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

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