Development of Advanced Techniques for Efficient Simulation and Fast 3D-printed Prototypes of Horn Antennas

Horn antennas are widely used in communication systems. They are typically used as feeds for re ector antennas and, due to its robustness, they can also be mounted on the fuselage of airplanes and are used on-board satellites. Horn antennas also present great directivities, gains, and e ciencies. The main drawback of this antenna family is (as it happens with most microwave devices) that they are complicated to simulate with full-wave electromagnetic methods. Most of the commercial tools available at the market for simulating microwave devices (CST Microwave Studio, HFSS,...) use general numerical methods such as nite elements or nite di erences in time or frequency domain, whose main advantage is that they can tackle a wide range of problems. The main drawback of these general methods is that this generality makes the simulation ine cient, causing long computation times for some problems in comparison with other more analytical techniques. This leads to the rst goal of this work, which consists in developing a software tool capable of analysing, simulating and designing horn antennas e ciently based on a numerical method, called Mode-Matching, which is known to be very e cient for this type of problems. In order to compute the radiation pattern of the antennas, the radiation integral of the electromagnetic eld at the horn aperture has to be calculated. An important part of this work will be devoted to the derivation of the necessary formulas that will allow to compute these integrals, since the literature does not usually cover these derivations with enough detail (typically the integrations are just solved for a simpli ed case), while here we will address the complete modal excitations. The use of this software would not only lead to shorter simulation and design times but would also permit to design horn antennas using low/moderate performance computers like notebooks. The construction of horn antennas (and once again, of most microwave devices) is usually a process with a high economic cost. But in the recent years, additive manufacturing techniques like 3D printing have opened the door to the low cost manufacturing of three-dimensional structures. Therefore the second goal of this work is to develop a construction process for the prototyping of horn antennas using a 3D printer. This process must be fast and inexpensive. To test the validity of these manufacturing techniques di erent devices will be constructed like conical, pyramidal and choke horns. In addition hollow and gap waveguides will be also studied and their performance will be evaluated. The fabrication of these devices will be performed locally by the author of this work. Moreover, the resulting devices will be also fully experimentally characterized in this work, in order to compare their characteristics with the simulations performed using the developed models. This will produce a convergence of the two goals of the work, joining the advanced electromagnetic modelling of microwave devices with one of the newest and trendiest manufacturing techniques.Las antenas de bocina son ampliamente usadas en los sistemas de comunicación. Típicamente se utilizan como alimentadores de antenas reflectoras y, debido a su robustez, también pueden montarse directamente sobre el fuselaje de aviones o usarse a bordo de satélites. Las bocinas también tienen la virtud de presentar grandes valores de directividad, ganancia y eficiencia. La principal desventaja de esta familia de antenas es (como suele ocurrir con la mayoría de los dispositivos de microondas) que son bastante complicadas de simular con métodos electromagnéticos de onda completa. La mayoría de las herramientas comerciales existentes en el mercado para la simulación de dispositivos de microondas (CST Microwave Studio, HFSS,...) usan métodos numéricos genéricos como son el de elementos finitos o el de diferencias finitas (bien en el dominio del tiempo o bien en el de la frecuencia), cuya principal ventaja es que permiten atacar un amplio rango de problemas. La mayor debilidad de estos métodos genéricos es precisamente que su generalidad hace la simulación ineficiente provocando largos tiempos de computación para ciertos problemas en comparación con otras técnicas más analíticas. Esto pone de manifiesto el primer objetivo de este trabajo, el cual consiste en desarrollar una herramienta software capaz de analizar, simular y diseñar antenas de bocina eficientemente basada en un método numérico, llamado Análisis Modal, del cual se sabe que es muy eficiente para operar con este tipo de problemas. Para calcular el diagrama de radiación de las antenas deberán resolverse las integrales de radiación del campo electromagnético en la apertura de la bocina. Una parte importante de este trabajo se dedicará a la obtención de las fórmulas necesarias para poder computar dichas integrales dado que la literatura no suele cubrir estos desarrollos con suficiente detalle (típicamente las integrales sólo suelen aparecer resueltas para un caso simplificado). El uso de este software permitirá no sólo reducir los tiempos de simulación y diseño si no también el diseñar antenas de bocina utilizando ordenadores de bajo/moderado rendimiento como los notebook. La construcción de las antenas de bocina (y de nuevo, también de la mayoría de dispositivos de microondas) es un proceso de un elevado coste. Sin embargo en los últimos años las técnicas de fabricación aditiva como la impresión 3D han abierto la puerta a la manufactura de bajo coste de estructuras tridimensionales. Por lo tanto el segundo objetivo de este trabajo consiste en desarrollar un proceso de construcción para el prototipado de antenas de bocina empleando una impresora 3D. Este proceso debería ser rápido y económico. Para comprobar la validez de estas técnicas de fabricación se construirán distintos dispositivos como bocinas cónicas, piramidales o choke. Además, también se fabricarán y estudiarán guías de ondas huecas y de tipo gap. La fabricación de estos dispositivos se llevará a cabo localmente por el autor de este trabajo y se realizará una caracterización experimental completa de los mismos, para comparar sus características con las simulaciones realizadas utilizando los modelos desarrollados. Esto producirá una convergencia de los dos objetivos del trabajo, juntando el modelado electromagnético avanzado de dispositivos de microondas con una de las técnicas de fabricación más novedosas y modernas

Análisis y diseño de bocinas con perfiles arbitrarios mediante análisis modal

Las antenas de bocina son ampliamente usadas en los sistemas de comunicación. Típicamente se utilizan como alimentadores de antenas reflectoras y, debido a su robustez, también pueden montarse directamente sobre el fuselaje de aviones y a bordo de satélites. Las bocinas tienen la virtud de presentar grandes valores de directividad, ganancia y eficiencia. La principal desventaja de esta familia de antenas es (como suele ocurrir con la mayoría de los dispositivos de microondas) que son bastante complicadas de simular electromagnéticamente. La mayoría de las herramientas comerciales existentes en el mercado para la simulación de dispositivos de microondas (CST Microwave Studio, HFSS,...) usan métodos numéricos genéricos como son el de elementos finitos o el de diferencias finitas (bien en el dominio del tiempo o en el de la frecuencia), cuya principal ventaja es que permiten atacar un amplio rango de problemas. La principal desventaja de estos métodos genéricos es precisamente que su generalidad hace la simulación ineficiente, provocando largos tiempos de computación para ciertos problemas en comparación con otras técnicas más analíticas. El objetivo de este trabajo es el de desarrollar una herramienta software capaz de analizar, simular y diseñar antenas de bocina de forma e ciente basada en un método numérico, llamado Análisis Modal, el cual es muy e ciente para este tipo de problemas. El uso de este software permitirá no sólo reducir los tiempos de simulación y diseño si no también el diseñar antenas de bocina utilizando ordenadores de bajo rendimiento como los notebook.Horn antennas are widely used in communication systems. They are typically used as feeds for re ector antennas and, due to its robustness, they can also be mounted on the fuselage of airplanes and are used on-board satellites. Horn antennas also present great directivities, gains, and e ciencies. The main drawback of this antenna family is (as it happens with most microwave devices) that they are pretty complicated to simulate with full-wave electromagnetic methods. Most of the commercial tools at the market for simulating microwave devices (CST Microwave Studio, HFSS,...) use general numerical methods such as finite elements or finite diferences in time or frequency domain, whose main advantage is that they can tackle a wide range of problems. The main drawback of these general methods is that this generality makes the simulation ine cient, causing long computation times for some problems in comparison with other more analytical techniques. The goal of this work is to develop a software tool capable of analyzing, simulating and designing horn antennas e ciently based on a numerical method, called Mode-Matching, which is known to be very e cient for this type of problem. Using this software would not only lead to shorter simulation and design times but would also permit to design horn antennas using low performance computers like notebooks

Analytical Far-zone Calculation of the Field Radiated from an Equilateral Triangular Aperture

© 2019 IEEE.  Personal use of this material is permitted.  Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.This work contributes to the classical analytical models for computing the radiated electromagnetic fields from an aperture with a canonical shape by means of the equivalence principle. Analytical closed-form expressions are presented for the radiation pattern generated by the modes of an equilateral triangular aperture. The derived formulation is based on the use of the well-known equivalence principle, which provides the radiated far-field from the transversal field at the aperture. This equivalence principle is briefly described, as well as the formulation of the modal field functions associated to an equilateral triangular aperture. The equivalence principle is then applied to these modal field functions to evaluate the closedform expressions for the integrals required to obtain the radiation pattern associated to each mode. Different examples are shown, where the analytical results achieved by the formulation derived in this work are compared with those provided by commercial software packages based on different numerical approaches, showing very good agreement.This work was supported by the Spanish Government (Agencia Estatal de Investigaci´on, Fondo Europeo de Desarrollo Regional) under grant TEC2016- 76070-C3-1-R (AEI/FEDER, UE

Mechanically reconfigurable linear phased array antenna based on single-block waveguide reflective phase shifters with tuning screws

This work presents the design and prototyping of a reconfigurable phased array in Ku band (16 to 18 GHz) implemented in waveguide technology. The design is based on the use of a novel seamless waveguide module integrating four reconfigurable phase shifters to adjust the relative phase shift between the unitary elements of a linear array, which are illuminated uniformly by a corporate waveguide feeding network. The phase shifters are implemented by a 90º hybrid coupler in waveguide technology where two of its ports are loaded with a tunable reactive load, implemented in this proof of concept with a tuning screw. The four phase shifters have been manufactured in a single part using direct metal laser sintering, avoiding the losses related to bad electric contacts and misalignments associated to multipart devices. This also simplifies the assembly of the full phased array, leading to a modular approach with three parts whose design can be addressed separately. The experimental results for the complete array antenna show great performance and demonstrate that the main-lobe of the radiation pattern can be effectively scanned continuously between the angles - 25º and 25º, with a high efficiency in the whole design band thanks to the proposed waveguide implementationThis work was supported by the Spanish Government, Agencia Estatal de Investigación, Fondo Europeo de Desarrollo Regional: AEI/FEDER, UE, under Grant TEC2016-76070-C3-1-

Waveguide manufacturing technologies for next-generation millimeter-wave antennas

Some recent waveguide-based antennas are presented in this paper, designed for the next generation of communication systems operating at the millimeter-wave band. The presented prototypes have been conceived to be manufactured using different state-of-the-art techniques, involving subtractive and additive approaches. All the designs have used the latest developments in the field of manufacturing to guarantee the required accuracy for operation at millimeter-wave frequencies, where tolerances are extremely tight. Different designs will be presented, including a monopulse antenna combining a comparator network, a mode converter, and a spline profile horn; a tunable phase shifter that is integrated into an array to implement reconfigurability of the main lobe direction; and a conformal array antenna. These prototypes were manufactured by diverse approaches taking into account the waveguide configuration, combining parts with high-precision milling, electrical discharge machining, direct metal laser sintering, or stereolithography with spray metallization, showing very competitive performances at the millimeter-wave band till 40 GHzThis work was supported by the Spanish Government under Grant TEC2016-76070- C3-1/2-R (ADDMATE); in part under Grant PID2020-116968RB-C32/33 (DEWICOM), Agencia Estatal de Investigación MCIN/AEI/10.13039/501100011033, Fondo Europeo de Desarrollo Regional: AEI/FEDER, UE. This work was also partially supported under Grant S2013/ICE3000 (SPADERADARCM), Madrid Regional Governmen

Investigación en Danza CSIC

INVESTIGACIÓN EN DANZA CSIC es un portal que recoge la actividad científica sobre danza en el contexto del Instituto de Historia del Consejo Superior de Investigaciones Científicas, sus proyectos de investigación e iniciativas vinculadasPeer reviewe

Taking the pulse of Earth's tropical forests using networks of highly distributed plots

Tropical forests are the most diverse and productive ecosystems on Earth. While better understanding of these forests is critical for our collective future, until quite recently efforts to measure and monitor them have been largely disconnected. Networking is essential to discover the answers to questions that transcend borders and the horizons of funding agencies. Here we show how a global community is responding to the challenges of tropical ecosystem research with diverse teams measuring forests tree-by-tree in thousands of long-term plots. We review the major scientific discoveries of this work and show how this process is changing tropical forest science. Our core approach involves linking long-term grassroots initiatives with standardized protocols and data management to generate robust scaled-up results. By connecting tropical researchers and elevating their status, our Social Research Network model recognises the key role of the data originator in scientific discovery. Conceived in 1999 with RAINFOR (South America), our permanent plot networks have been adapted to Africa (AfriTRON) and Southeast Asia (T-FORCES) and widely emulated worldwide. Now these multiple initiatives are integrated via ForestPlots.net cyber-infrastructure, linking colleagues from 54 countries across 24 plot networks. Collectively these are transforming understanding of tropical forests and their biospheric role. Together we have discovered how, where and why forest carbon and biodiversity are responding to climate change, and how they feedback on it. This long-term pan-tropical collaboration has revealed a large long-term carbon sink and its trends, as well as making clear which drivers are most important, which forest processes are affected, where they are changing, what the lags are, and the likely future responses of tropical forests as the climate continues to change. By leveraging a remarkably old technology, plot networks are sparking a very modern revolution in tropical forest science. In the future, humanity can benefit greatly by nurturing the grassroots communities now collectively capable of generating unique, long-term understanding of Earth's most precious forests.Additional co-authors: Susan Laurance, William Laurance, Francoise Yoko Ishida, Andrew Marshall, Catherine Waite, Hannsjoerg Woell, Jean-Francois Bastin, Marijn Bauters, Hans Beeckman, Pfascal Boeckx, Jan Bogaert, Charles De Canniere, Thales de Haulleville, Jean-Louis Doucet, Olivier Hardy, Wannes Hubau, Elizabeth Kearsley, Hans Verbeeck, Jason Vleminckx, Steven W. Brewer, Alfredo Alarcón, Alejandro Araujo-Murakami, Eric Arets, Luzmila Arroyo, Ezequiel Chavez, Todd Fredericksen, René Guillén Villaroel, Gloria Gutierrez Sibauty, Timothy Killeen, Juan Carlos Licona, John Lleigue, Casimiro Mendoza, Samaria Murakami, Alexander Parada Gutierrez, Guido Pardo, Marielos Peña-Claros, Lourens Poorter, Marisol Toledo, Jeanneth Villalobos Cayo, Laura Jessica Viscarra, Vincent Vos, Jorge Ahumada, Everton Almeida, Jarcilene Almeida, Edmar Almeida de Oliveira, Wesley Alves da Cruz, Atila Alves de Oliveira, Fabrício Alvim Carvalho, Flávio Amorim Obermuller, Ana Andrade, Fernanda Antunes Carvalho, Simone Aparecida Vieira, Ana Carla Aquino, Luiz Aragão, Ana Claudia Araújo, Marco Antonio Assis, Jose Ataliba Mantelli Aboin Gomes, Fabrício Baccaro, Plínio Barbosa de Camargo, Paulo Barni, Jorcely Barroso, Luis Carlos Bernacci, Kauane Bordin, Marcelo Brilhante de Medeiros, Igor Broggio, José Luís Camargo, Domingos Cardoso, Maria Antonia Carniello, Andre Luis Casarin Rochelle, Carolina Castilho, Antonio Alberto Jorge Farias Castro, Wendeson Castro, Sabina Cerruto Ribeiro, Flávia Costa, Rodrigo Costa de Oliveira, Italo Coutinho, John Cunha, Lola da Costa, Lucia da Costa Ferreira, Richarlly da Costa Silva, Marta da Graça Zacarias Simbine, Vitor de Andrade Kamimura, Haroldo Cavalcante de Lima, Lia de Oliveira Melo, Luciano de Queiroz, José Romualdo de Sousa Lima, Mário do Espírito Santo, Tomas Domingues, Nayane Cristina dos Santos Prestes, Steffan Eduardo Silva Carneiro, Fernando Elias, Gabriel Eliseu, Thaise Emilio, Camila Laís Farrapo, Letícia Fernandes, Gustavo Ferreira, Joice Ferreira, Leandro Ferreira, Socorro Ferreira, Marcelo Fragomeni Simon, Maria Aparecida Freitas, Queila S. García, Angelo Gilberto Manzatto, Paulo Graça, Frederico Guilherme, Eduardo Hase, Niro Higuchi, Mariana Iguatemy, Reinaldo Imbrozio Barbosa, Margarita Jaramillo, Carlos Joly, Joice Klipel, Iêda Leão do Amaral, Carolina Levis, Antonio S. Lima, Maurício Lima Dan, Aline Lopes, Herison Madeiros, William E. Magnusson, Rubens Manoel dos Santos, Beatriz Marimon, Ben Hur Marimon Junior, Roberta Marotti Martelletti Grillo, Luiz Martinelli, Simone Matias Reis, Salomão Medeiros, Milton Meira-Junior, Thiago Metzker, Paulo Morandi, Natanael Moreira do Nascimento, Magna Moura, Sandra Cristina Müller, Laszlo Nagy, Henrique Nascimento, Marcelo Nascimento, Adriano Nogueira Lima, Raimunda Oliveira de Araújo, Jhonathan Oliveira Silva, Marcelo Pansonato, Gabriel Pavan Sabino, Karla Maria Pedra de Abreu, Pablo José Francisco Pena Rodrigues, Maria Piedade, Domingos Rodrigues, José Roberto Rodrigues Pinto, Carlos Quesada, Eliana Ramos, Rafael Ramos, Priscyla Rodrigues, Thaiane Rodrigues de Sousa, Rafael Salomão, Flávia Santana, Marcos Scaranello, Rodrigo Scarton Bergamin, Juliana Schietti, Jochen Schöngart, Gustavo Schwartz, Natalino Silva, Marcos Silveira, Cristiana Simão Seixas, Marta Simbine, Ana Claudia Souza, Priscila Souza, Rodolfo Souza, Tereza Sposito, Edson Stefani Junior, Julio Daniel do Vale, Ima Célia Guimarães Vieira, Dora Villela, Marcos Vital, Haron Xaud, Katia Zanini, Charles Eugene Zartman, Nur Khalish Hafizhah Ideris, Faizah binti Hj Metali, Kamariah Abu Salim, Muhd Shahruney Saparudin, Rafizah Mat Serudin, Rahayu Sukmaria Sukri, Serge Begne, George Chuyong, Marie Noel Djuikouo, Christelle Gonmadje, Murielle Simo-Droissart, Bonaventure Sonké, Hermann Taedoumg, Lise Zemagho, Sean Thomas, Fidèle Baya, Gustavo Saiz, Javier Silva Espejo, Dexiang Chen, Alan Hamilton, Yide Li, Tushou Luo, Shukui Niu, Han Xu, Zhang Zhou, Esteban Álvarez-Dávila, Juan Carlos Andrés Escobar, Henry Arellano-Peña, Jaime Cabezas Duarte, Jhon Calderón, Lina Maria Corrales Bravo, Borish Cuadrado, Hermes Cuadros, Alvaro Duque, Luisa Fernanda Duque, Sandra Milena Espinosa, Rebeca Franke-Ante, Hernando García, Alejandro Gómez, Roy González-M., Álvaro Idárraga-Piedrahíta, Eliana Jimenez, Rubén Jurado, Wilmar López Oviedo, René López-Camacho, Omar Aurelio Melo Cruz, Irina Mendoza Polo, Edwin Paky, Karen Pérez, Angel Pijachi, Camila Pizano, Adriana Prieto, Laura Ramos, Zorayda Restrepo Correa, James Richardson, Elkin Rodríguez, Gina M. Rodriguez M., Agustín Rudas, Pablo Stevenson, Markéta Chudomelová, Martin Dancak, Radim Hédl, Stanislav Lhota, Martin Svatek, Jacques Mukinzi, Corneille Ewango, Terese Hart, Emmanuel Kasongo Yakusu, Janvier Lisingo, Jean-Remy Makana, Faustin Mbayu, Benjamin Toirambe, John Tshibamba Mukendi, Lars Kvist, Gustav Nebel, Selene Báez, Carlos Céron, Daniel M. Griffith, Juan Ernesto Guevara Andino, David Neill, Walter Palacios, Maria Cristina Peñuela-Mora, Gonzalo Rivas-Torres, Gorky Villa, Sheleme Demissie, Tadesse Gole, Techane Gonfa, Kalle Ruokolainen, Michel Baisie, Fabrice Bénédet, Wemo Betian, Vincent Bezard, Damien Bonal, Jerôme Chave, Vincent Droissart, Sylvie Gourlet-Fleury, Annette Hladik, Nicolas Labrière, Pétrus Naisso, Maxime Réjou-Méchain, Plinio Sist, Lilian Blanc, Benoit Burban, Géraldine Derroire, Aurélie Dourdain, Clement Stahl, Natacha Nssi Bengone, Eric Chezeaux, Fidèle Evouna Ondo, Vincent Medjibe, Vianet Mihindou, Lee White, Heike Culmsee, Cristabel Durán Rangel, Viviana Horna, Florian Wittmann, Stephen Adu-Bredu, Kofi Affum-Baffoe, Ernest Foli, Michael Balinga, Anand Roopsind, James Singh, Raquel Thomas, Roderick Zagt, Indu K. Murthy, Kuswata Kartawinata, Edi Mirmanto, Hari Priyadi, Ismayadi Samsoedin, Terry Sunderland, Ishak Yassir, Francesco Rovero, Barbara Vinceti, Bruno Hérault, Shin-Ichiro Aiba, Kanehiro Kitayama, Armandu Daniels, Darlington Tuagben, John T. Woods, Muhammad Fitriadi, Alexander Karolus, Kho Lip Khoon, Noreen Majalap, Colin Maycock, Reuben Nilus, Sylvester Tan, Almeida Sitoe, Indiana Coronado G., Lucas Ojo, Rafael de Assis, Axel Dalberg Poulsen, Douglas Sheil, Karen Arévalo Pezo, Hans Buttgenbach Verde, Victor Chama Moscoso, Jimmy Cesar Cordova Oroche, Fernando Cornejo Valverde, Massiel Corrales Medina, Nallaret Davila Cardozo, Jano de Rutte Corzo, Jhon del Aguila Pasquel, Gerardo Flores Llampazo, Luis Freitas, Darcy Galiano Cabrera, Roosevelt García Villacorta, Karina Garcia Cabrera, Diego García Soria, Leticia Gatica Saboya, Julio Miguel Grandez Rios, Gabriel Hidalgo Pizango, Eurídice Honorio Coronado, Isau Huamantupa-Chuquimaco, Walter Huaraca Huasco, Yuri Tomas Huillca Aedo, Jose Luis Marcelo Peña, Abel Monteagudo Mendoza, Vanesa Moreano Rodriguez, Percy Núñez Vargas, Sonia Cesarina Palacios Ramos, Nadir Pallqui Camacho, Antonio Peña Cruz, Freddy Ramirez Arevalo, José Reyna Huaymacari, Carlos Reynel Rodriguez, Marcos Antonio Ríos Paredes, Lily Rodriguez Bayona, Rocio del Pilar Rojas Gonzales, Maria Elena Rojas Peña, Norma Salinas Revilla, Yahn Carlos Soto Shareva, Raul Tupayachi Trujillo, Luis Valenzuela Gamarra, Rodolfo Vasquez Martinez, Jim Vega Arenas, Christian Amani, Suspense Averti Ifo, Yannick Bocko, Patrick Boundja, Romeo Ekoungoulou, Mireille Hockemba, Donatien Nzala, Alusine Fofanah, David Taylor, Guillermo Bañares-de Dios, Luis Cayuela, Íñigo Granzow-de la Cerda, Manuel Macía, Juliana Stropp, Maureen Playfair, Verginia Wortel, Toby Gardner, Robert Muscarella, Hari Priyadi, Ervan Rutishauser, Kuo-Jung Chao, Pantaleo Munishi, Olaf Bánki, Frans Bongers, Rene Boot, Gabriella Fredriksson, Jan Reitsma, Hans ter Steege, Tinde van Andel, Peter van de Meer, Peter van der Hout, Mark van Nieuwstadt, Bert van Ulft, Elmar Veenendaal, Ronald Vernimmen, Pieter Zuidema, Joeri Zwerts, Perpetra Akite, Robert Bitariho, Colin Chapman, Eilu Gerald, Miguel Leal, Patrick Mucunguzi, Miguel Alexiades, Timothy R. Baker, Karina Banda, Lindsay Banin, Jos Barlow, Amy Bennett, Erika Berenguer, Nicholas Berry, Neil M. Bird, George A. Blackburn, Francis Brearley, Roel Brienen, David Burslem, Lidiany Carvalho, Percival Cho, Fernanda Coelho, Murray Collins, David Coomes, Aida Cuni-Sanchez, Greta Dargie, Kyle Dexter, Mat Disney, Freddie Draper, Muying Duan, Adriane Esquivel-Muelbert, Robert Ewers, Belen Fadrique, Sophie Fauset, Ted R. Feldpausch, Filipe França, David Galbraith, Martin Gilpin, Emanuel Gloor, John Grace, Keith Hamer, David Harris, Tommaso Jucker, Michelle Kalamandeen, Bente Klitgaard, Aurora Levesley, Simon L. Lewis, Jeremy Lindsell, Gabriela Lopez-Gonzalez, Jon Lovett, Yadvinder Malhi, Toby Marthews, Emma McIntosh, Karina Melgaço, William Milliken, Edward Mitchard, Peter Moonlight, Sam Moore, Alexandra Morel, Julie Peacock, Kelvin Peh, Colin Pendry, R. Toby Pennington, Luciana de Oliveira Pereira, Carlos Peres, Oliver L. Phillips, Georgia Pickavance, Thomas Pugh, Lan Qie, Terhi Riutta, Katherine Roucoux, Casey Ryan, Tiina Sarkinen, Camila Silva Valeria, Dominick Spracklen, Suzanne Stas, Martin Sullivan, Michael Swaine, Joey Talbot, James Taplin, Geertje van der Heijden, Laura Vedovato, Simon Willcock, Mathew Williams, Luciana Alves, Patricia Alvarez Loayza, Gabriel Arellano, Cheryl Asa, Peter Ashton, Gregory Asner, Terry Brncic, Foster Brown, Robyn Burnham, Connie Clark, James Comiskey, Gabriel Damasco, Stuart Davies, Tony Di Fiore, Terry Erwin, William Farfan-Rios, Jefferson Hall, David Kenfack, Thomas Lovejoy, Roberta Martin, Olga Martha Montiel, John Pipoly, Nigel Pitman, John Poulsen, Richard Primack, Miles Silman, Marc Steininger, Varun Swamy, John Terborgh, Duncan Thomas, Peter Umunay, Maria Uriarte, Emilio Vilanova Torre, Ophelia Wang, Kenneth Young, Gerardo A. Aymard C., Lionel Hernández, Rafael Herrera Fernández, Hirma Ramírez-Angulo, Pedro Salcedo, Elio Sanoja, Julio Serrano, Armando Torres-Lezama, Tinh Cong Le, Trai Trong Le, Hieu Dang Tra

Performance of a modular ton-scale pixel-readout liquid argon time projection chamber

The Module-0 Demonstrator is a single-phase 600 kg liquid argon time projection chamber operated as a prototype for the DUNE liquid argon near detector. Based on the ArgonCube design concept, Module-0 features a novel 80k-channel pixelated charge readout and advanced high-coverage photon detection system. In this paper, we present an analysis of an eight-day data set consisting of 25 million cosmic ray events collected in the spring of 2021. We use this sample to demonstrate the imaging performance of the charge and light readout systems as well as the signal correlations between the two. We also report argon purity and detector uniformity measurements and provide comparisons to detector simulations