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The surface detector technique has been successfully used to detect cosmic ray showers for several decades. Scintillators or Cerenkov water tanks can be used to measure the number of particles and/or the energy density at a given depth in…

The principle and performances of the CODALEMA experimental device, set up to study the possibility of high energy cosmic rays radio detection, are presented. Radio transient signals associated to cosmic rays have been identified, for which…

Chromatic calorimetry (CCAL) analyses particle detection by utilizing scintillators with distinct emission wavelengths to measure the longitudinal energy deposition of particle showers in high-energy physics, improving particle…

High Energy Physics - Experiment · Physics 2025-09-12 Devanshi Arora

Electroporation is a complex, iterative, and nonlinear phenomenon that is often studied by numerical simulations. In recent years, tissue electroporation simulations have been performed using static models. However, the results of a static…

Systems and Control · Electrical Eng. & Systems 2024-03-08 Raul Guedert , Daniella L. L. S. Andrade , Jéssica Rodrigues , Guilherme B. Pintarelli , Daniela O. H. Suzuki

We report an investigation of the mass composition of cosmic rays with energies from 3 to 100 EeV (1 EeV=$10^{18}$ eV) using the distributions of the depth of shower maximum $X_\mathrm{max}$. The analysis relies on ${\sim}50,000$ events…

High Energy Astrophysical Phenomena · Physics 2025-02-07 The Pierre Auger Collaboration , A. Abdul Halim , P. Abreu , M. Aglietta , I. Allekotte , K. Almeida Cheminant , A. Almela , R. Aloisio , J. Alvarez-Muñiz , J. Ammerman Yebra , G. A. Anastasi , L. Anchordoqui , B. Andrada , L. Andrade Dourado , S. Andringa , L. Apollonio , C. Aramo , P. R. Araújo Ferreira , E. Arnone , J. C. Arteaga Velázquez , P. Assis , G. Avila , E. Avocone , A. Bakalova , F. Barbato , A. Bartz Mocellin , C. Berat , M. E. Bertaina , G. Bhatta , M. Bianciotto , P. L. Biermann , V. Binet , K. Bismark , T. Bister , J. Biteau , J. Blazek , C. Bleve , J. Blümer , M. Boháčová , D. Boncioli , C. Bonifazi , L. Bonneau Arbeletche , N. Borodai , J. Brack , P. G. Brichetto Orchera , F. L. Briechle , A. Bueno , S. Buitink , M. Buscemi , M. Büsken , A. Bwembya , K. S. Caballero-Mora , S. Cabana-Freire , L. Caccianiga , F. Campuzano , R. Caruso , A. Castellina , F. Catalani , G. Cataldi , L. Cazon , M. Cerda , B. Čermáková , A. Cermenati , J. A. Chinellato , J. Chudoba , L. Chytka , R. W. Clay , A. C. Cobos Cerutti , R. Colalillo , M. R. Coluccia , R. Conceição , A. Condorelli , G. Consolati , M. Conte , F. Convenga , D. Correia dos Santos , P. J. Costa , C. E. Covault , M. Cristinziani , C. S. Cruz Sanchez , S. Dasso , K. Daumiller , B. R. Dawson , R. M. de Almeida , B. de Errico , J. de Jesús , S. J. de Jong , J. R. T. de Mello Neto , I. De Mitri , J. de Oliveira , D. de Oliveira Franco , F. de Palma , V. de Souza , E. De Vito , A. Del Popolo , O. Deligny , N. Denner , L. Deval , A. di Matteo , J. A. do , M. Dobre , C. Dobrigkeit , J. C. D'Olivo , L. M. Domingues Mendes , Q. Dorosti , J. C. dos Anjos , R. C. dos Anjos , J. Ebr , F. Ellwanger , M. Emam , R. Engel , I. Epicoco , M. Erdmann , A. Etchegoyen , C. Evoli , H. Falcke , G. Farrar , A. C. Fauth , T. Fehler , F. Feldbusch , F. Fenu , A. Fernandes , B. Fick , J. M. Figueira , P. Filip , A. Filipčič , T. Fitoussi , B. Flaggs , T. Fodran , T. Fujii , A. Fuster , C. Galea , B. García , C. Gaudu , A. Gherghel-Lascu , P. L. Ghia , U. Giaccari , J. Glombitza , F. Gobbi , F. Gollan , G. Golup , M. Gómez Berisso , P. F. Gómez Vitale , J. P. Gongora , J. M. González , N. González , D. Góra , A. Gorgi , M. Gottowik , F. Guarino , G. P. Guedes , E. Guido , L. Gülzow , S. Hahn , P. Hamal , M. R. Hampel , P. Hansen , D. Harari , V. M. Harvey , A. Haungs , T. Hebbeker , C. Hojvat , J. R. Hörandel , P. Horvath , M. Hrabovský , T. Huege , A. Insolia , P. G. Isar , P. Janecek , V. Jilek , J. A. Johnsen , J. Jurysek , K. -H. Kampert , B. Keilhauer , A. Khakurdikar , V. V. Kizakke Covilakam , H. O. Klages , M. Kleifges , F. Knapp , J. Köhler , F. Krieger , N. Kunka , B. L. Lago , N. Langner , M. A. Leigui de Oliveira , Y. Lema-Capeans , A. Letessier-Selvon , I. Lhenry-Yvon , L. Lopes , L. Lu , Q. Luce , J. P. Lundquist , A. Machado Payeras , M. Majercakova , D. Mandat , B. C. Manning , P. Mantsch , F. M. Mariani , A. G. Mariazzi , I. C. Mariş , G. Marsella , D. Martello , S. Martinelli , O. Martínez Bravo , M. A. Martins , H. -J. Mathes , J. Matthews , G. Matthiae , E. Mayotte , S. Mayotte , P. O. Mazur , G. Medina-Tanco , J. Meinert , D. Melo , A. Menshikov , C. Merx , S. Michal , M. I. Micheletti , L. Miramonti , S. Mollerach , F. Montanet , L. Morejon , K. Mulrey , R. Mussa , W. M. Namasaka , S. Negi , L. Nellen , K. Nguyen , G. Nicora , M. Niechciol , D. Nitz , D. Nosek , V. Novotny , L. Nožka , A. Nucita , L. A. Núñez , C. Oliveira , M. Palatka , J. Pallotta , S. Panja , G. Parente , T. Paulsen , J. Pawlowsky , M. Pech , J. Pękala , R. Pelayo , V. Pelgrims , L. A. S. Pereira , E. E. Pereira Martins , C. Pérez Bertolli , L. Perrone , S. Petrera , C. Petrucci , T. Pierog , M. Pimenta , M. Platino , B. Pont , M. Pothast , M. Pourmohammad Shahvar , P. Privitera , M. Prouza , S. Querchfeld , J. Rautenberg , D. Ravignani , J. V. Reginatto Akim , M. Reininghaus , A. Reuzki , J. Ridky , F. Riehn , M. Risse , V. Rizi , W. Rodrigues de Carvalho , E. Rodriguez , J. Rodriguez Rojo , M. J. Roncoroni , S. Rossoni , M. Roth , E. Roulet , A. C. Rovero , A. Saftoiu , M. Saharan , F. Salamida , H. Salazar , G. Salina , J. D. Sanabria Gomez , F. Sánchez , E. M. Santos , E. Santos , F. Sarazin , R. Sarmento , R. Sato , P. Savina , C. M. Schäfer , V. Scherini , H. Schieler , M. Schimassek , M. Schimp , D. Schmidt , O. Scholten , H. Schoorlemmer , P. Schovánek , F. G. Schröder , J. Schulte , T. Schulz , S. J. Sciutto , M. Scornavacche , A. Sedoski , A. Segreto , S. Sehgal , S. U. Shivashankara , G. Sigl , K. Simkova , F. Simon , R. Smau , R. Šmída , P. Sommers , R. Squartini , M. Stadelmaier , S. Stanič , J. Stasielak , P. Stassi , S. Strähnz , M. Straub , T. Suomijärvi , A. D. Supanitsky , Z. Svozilikova , Z. Szadkowski , F. Tairli , A. Tapia , C. Taricco , C. Timmermans , O. Tkachenko , P. Tobiska , C. J. Todero Peixoto , B. Tomé , Z. Torrès , A. Travaini , P. Travnicek , M. Tueros , M. Unger , R. Uzeiroska , L. Vaclavek , M. Vacula , J. F. Valdés Galicia , L. Valore , E. Varela , V. Vašíčková , A. Vásquez-Ramírez , D. Veberič , I. D. Vergara Quispe , V. Verzi , J. Vicha , J. Vink , S. Vorobiov , C. Watanabe , A. A. Watson , A. Weindl , L. Wiencke , H. Wilczyński , D. Wittkowski , B. Wundheiler , B. Yue , A. Yushkov , O. Zapparrata , E. Zas , D. Zavrtanik , M. Zavrtanik

We describe the analysis of longitudinal air shower profiles as measured by the fluorescence detectors of the Pierre Auger Observatory and present the measurement of the depth of maximum of extensive air showers, Xmax, with energies >10^18…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Michael Unger

Showers produced by positive hadrons in the highly granular CALICE scintillator-steel analogue hadron calorimeter were studied. The experimental data were collected at CERN and FNAL for single particles with initial momenta from 10 to 80…

Instrumentation and Detectors · Physics 2015-05-20 The CALICE Collaboration , B. Bilki , J. Repond , L. Xia , G. Eigen , M. A. Thomson , D. R. Ward , D. Benchekroun , A. Hoummada , Y. Khoulaki , S. Chang , A. Khan , D. H. Kim , D. J. Kong , Y. D. Oh , G. C. Blazey , A. Dyshkant , K. Francis , J. G. R. Lima , R. Salcido , V. Zutshi , F. Salvatore , K. Kawagoe , Y. Miyazaki , Y. Sudo , T. Suehara , T. Tomita , H. Ueno , T. Yoshioka , J. Apostolakis , D. Dannheim , G. Folger , V. Ivantchenko , W. Klempt , A. -I. Lucaci-Timoce , A. Ribon , D. Schlatter , E. Sicking , V. Uzhinskiy , J. Giraud , D. Grondin , J. -Y. Hostachy , L. Morin , E. Brianne , U. Cornett , D. David , A. Ebrahimi , G. Falley , K. Gadow , P. Göttlicher , C. Günter , O. Hartbrich , B. Hermberg , S. Karstensen , F. Krivan , K. Krüger , S. Lu , B. Lutz , S. Morozov , V. Morgunov , C. Neubüser , M. Reinecke , F. Sefkow , P. Smirnov , H. L. Tran , P. Buhmann , E. Garutti , S. Laurien , M. Matysek , M. Ramilli , K. Briggl , P. Eckert , T. Harion , Y. Munwes , H. -Ch. Schultz-Coulon , W. Shen , R. Stamen , E. Norbeck , D. Northacker , Y. Onel , B. van Doren , G. W. Wilson , M. Wing , C. Combaret , L. Caponetto , R. Eté , G. Grenier , R. Han , J. C. Ianigro , R. Kieffer , I. Laktineh , N. Lumb , H. Mathez , L. Mirabito , A. Petrukhin , A. Steen , J. Berenguer Antequera , E. Calvo Alamillo , M. -C. Fouz , J. Marin , J. Puerta-Pelayo , A. Verdugo , F. Corriveau , B. Bobchenko , R. Chistov , M. Chadeeva , M. Danilov , A. Drutskoy , A. Epifantsev , O. Markin , D. Mironov , R. Mizuk , E. Novikov , V. Rusinov , E. Tarkovsky , D. Besson , P. Buzhan , A. Ilyin , E. Popova , M. Gabriel , C. Kiesling , N. van der Kolk , F. Simon , C. Soldner , M. Szalay , M. Tesar , L. Weuste , M. S. Amjad , J. Bonis , S. Callier , S. Conforti di Lorenzo , P. Cornebise , F. Dulucq , J. Fleury , T. Frisson , G. Martin-Chassard , R. Pöschl , L. Raux , F. Richard , J. Rouëné , N. Seguin-Moreau , Ch. de la Taille , M. Anduze , V. Boudry , J-C. Brient , C. Clerc , R. Cornat , M. Frotin , F. Gastaldi , A. Matthieu , P. Mora de Freitas , G. Musat , M. Ruan , H. Videau , J. Zacek , J. Cvach , P. Gallus , M. Havranek , M. Janata , J. Kvasnicka , D. Lednicky , M. Marcisovsky , I. Polak , J. Popule , L. Tomasek , M. Tomasek , P. Sicho , J. Smolik , V. Vrba , J. Zalesak , D. Jeans , S. Weber

The fluorescence technique has been successfully used to detect ultrahigh energy cosmic rays by indirect measurements. The underlying idea is that the number of charged particles in the atmospheric shower, i.e, its longitudinal profile, can…

Astrophysics · Physics 2007-05-23 Vitor de Souza , Jeferson A. Ortiz , Gustavo Medina-Tanco , Federico Sanchez

The shape of the longitudinal development of the showers generated in the atmosphere by very high energy cosmic ray particles encodes information about the mass composition of the flux, and about the properties of hadronic interactions that…

High Energy Astrophysical Phenomena · Physics 2021-05-19 Paolo Lipari

Very high energy cosmic rays are typically studied by measuring extensive air showers formed by secondary particles produced in collisions with air nuclei. The indirect character of the measurement makes the physics interpretation of cosmic…

High Energy Physics - Phenomenology · Physics 2014-11-17 Ralph Engel

In most high energy cosmic ray surface arrays, the primary energy is currently determined from the value of the lateral distribution function at a fixed distance from the shower core, r0. The value of r0 is mainly related to the geometry of…

Astrophysics · Physics 2013-06-03 G. Ros , G. Medina-Tanco , L. del Peral , J. C. D'Olivo , F. Arqueros , M. D. Rodriguez-Frias

Despite the significant experimental effort made in the last decades, the origin of the ultra-high energy cosmic rays is still largely unknown. Key astrophysical information to identify where these energetic particles come from is provided…

Instrumentation and Methods for Astrophysics · Physics 2016-06-09 D. Ravignani , A. D. Supanitsky , D. Melo

Several experiments measure the fluorescence light produced by extensive air showers in the atmosphere. This light is converted into a longitudinal shower profile from which information on the primary energy and composition is derived. The…

Astrophysics · Physics 2007-05-23 B. Keilhauer , J. Bluemer , R. Engel , H. O. Klages

From a consideration of high temperature series expansions in ferromagnets and in spin glasses, we propose an extended scaling scaling scheme involving a set of scaling formulae which express to leading order the temperature (T) and the…

Statistical Mechanics · Physics 2007-05-23 I. A. Campbell , K. Hukushima , H. Takayama

The SND@LHC experiment was built for observing neutrinos arising from LHC pp collisions. The detector consists of two sections: a target instrumented with SciFi modules and a hadronic calorimeter/muon detector. Energetic $\nu$N collisions…

Instrumentation and Detectors · Physics 2025-10-14 LHC Collaboration

We study the dependence of extensive air shower development on the first hadronic interactions at ultra-high energies occurring in the startup phase of the air shower cascade. The interpretation of standard air shower observables depends on…

High Energy Astrophysical Phenomena · Physics 2009-06-03 Ralf Ulrich , Ralph Engel , Steffen Müller , Tanguy Pierog , Fabian Schüssler , Michael Unger

Recent measurements suggest free electrons created in ultra-high energy cosmic ray extensive air showers (EAS) can interact with neutral air molecules producing Bremsstrahlung radiation in the microwave regime. The microwave radiation…

Results are presented of beam tests in which a small electromagnetic calorimeter consisting of lead tungstate crystals was exposed to 50 GeV electrons and pions. This calorimeter was backed up by the DREAM Dual-Readout calorimeter, which…

Instrumentation and Detectors · Physics 2008-11-26 N. Akchurin

Calorimeter shower simulations are often the bottleneck in simulation time for particle physics detectors. A lot of effort is currently spent on optimizing generative architectures for specific detector geometries, which generalize poorly.…

Instrumentation and Detectors · Physics 2022-12-19 Junze Liu , Aishik Ghosh , Dylan Smith , Pierre Baldi , Daniel Whiteson

A small prototype of a finely granulated digital hadron calorimeter with Resistive Plate Chambers as active elements was exposed to positrons of 1 . 16 GeV energy from the Fermilab test beam. The response function, energy resolution, as…

Instrumentation and Detectors · Physics 2010-06-29 Burak Bilki , John Butler , Ed May , Georgios Mavromanolakis , Edwin Norbeck , Jose Repond , David Underwood , Lei Xia , Qingmin Zhang