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Dissertations / Theses on the topic 'High luminosty LHC'

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Published: 6 July 2024
Last updated: 31 July 2025

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1

Perrin, Océane. "Étude de l'autocouplage du boson de Higgs avec le détecteur ATLAS au LHC. Performance d'un détecteur en temps pour la phase de Haute luminosité du LHC." Electronic Thesis or Diss., Université Clermont Auvergne (2021-...), 2023. http://www.theses.fr/2023UCFA0164.

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Une particule ayant une masse de 125 GeV a été observée en 2012 grâce au grand collisionneur de hadrons (Large Hadron Collider - LHC) par les collaborations ATLAS et CMS. Cette particule fut associée au boson de Higgs ou boson BEH, dont l'existence fut prédite en 1964 par François Englert, Robert Brout et Peter Higgs. Cette particule permit de valider l'existence du mécanisme BEH, expliquant l'origine de la masse des particules découverte dès lors et de la brisure de symétrie électrofaible.Depuis sa découverte, il est devenu crucial de sonder les différentes propriétés que l'on confère au boso
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2

Köhler, Michael [Verfasser], and Karl [Akademischer Betreuer] Jakobs. "Double-sided 3D silicon detectors for the high-luminosity LHC = Doppelseitige 3D-Siliziumdetektoren für den High-Luminosity LHC." Freiburg : Universität, 2011. http://d-nb.info/1123462038/34.

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3

White, S. "Determination of the absolute luminosity at the LHC." Phd thesis, Université Paris Sud - Paris XI, 2010. http://tel.archives-ouvertes.fr/tel-00537325.

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Les paramètres les plus importants décrivant les performances d'un collisionneur de particules sont l'énergie et la luminosité. Les hautes énergies permettent aux expériences de physique des particules d' étudier de nouveaux effets. La luminosité décrit la capacité du collisionneur à produire le nombre requis d'interactions utiles ou événements. Le Large Hadron Collider (Grand Collisionneur de Hadron) ou LHC a été conçu pour produire des collisions proton proton à une énergie dans le centre de masse de 14 TeV. Cette énergie est la plus haute jamais atteinte jusqu'alors dans un accélérateur de
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Laface, Emanuele. "Selected issues for the LHC luminosity upgrade." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2008. http://tel.archives-ouvertes.fr/tel-00377619.

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Le grand collisionneur d'hadrons (LHC) a commencé les opérations de faisceau de protons le 10 septembre 2008. Respectant le programme prévu pour les prochaines années, le LHC devrait démontrer ou réfuter l'existence du boson de Higgs de façon réaliste d'ici 2014. Après cette date il est raisonnable de prévoir l'amélioration de la luminosité de la machine pour explorer en détail la physique des événements rares.<br />Le présent travail de thèse propose différentes idées pour augmenter la luminosité des expériences ATLAS et CMS, les deux principales expériences du programme scientifique du LHC.
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Vázquez, Furelos David. "3D pixel sensors for the high luminosity LHC ATLAS detector upgrade." Doctoral thesis, Universitat Autònoma de Barcelona, 2019. http://hdl.handle.net/10803/669548.

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6

James, Tom. "A hardware track-trigger for CMS at the High Luminosity LHC." Thesis, Imperial College London, 2018. http://hdl.handle.net/10044/1/60593.

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The Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) is designed to study a wide range of high energy physics phenomena. It employs a large all-silicon tracker within a 3.8 T magnetic solenoid, which allows precise measurements of transverse momentum (pT) and vertex position. This tracking detector will be upgraded to coincide with the installation of the High-Luminosity LHC, which will provide up to about 10^35 / cm^2 / s to CMS, or 200 collisions per 25 ns bunch crossing. This new tracker must maintain the nominal physics performance in this more challenging environm
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POULIOS, STAMATIOS. "Data compression for the CMS pixel detector at High-Luminosity LHC." Doctoral thesis, Università di Siena, 2017. http://hdl.handle.net/11365/1013403.

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The High Luminosity run of the Large Hadron Collider (HL-LHC), foreseen to start in ~2026, will increase the delivered luminosity by roughly an order of magnitude compared to its original design, allowing to collect a statistics of about 3000 fb^(-1) . This large amount of data will consent a deeper study of the Standard Model of particle physics, searching for physics beyond it. In order to sustain the high collision rate and higher radiation doses, as well as to increase the precise reconstruction of the charged track trajectories, a new Silicon Pixel detector will be installed in the CMS ex
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8

Gkougkousis, Evangelos. "Etudes de bruit du fond dans le canal H→ZZ*→4l pour le Run 1 du LHC. Perspectives du mode bbH(→γγ) et études d'un système de détecteur pixel amélioré pour la mise à niveau de l'expérience ATLAS pour la phase HL-LHC". Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS063/document.

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La première prise des données du LHC (2010-2012) a été marquée par la découverte du boson scalaire, dit boson de Higgs. Sa masse a été mesurée avec une précision de 0.2% en utilisant ses désintégrations en deux photons et celles en deux bosons Z donnant quatre leptons dans l’état final. Les couplages ont été estimés en combinant plusieurs états finaux, tandis que la précision sur leur mesure pourra bénéficier énormément de la grande statistique qui sera accumulée pendant les prochaines périodes de prise des données au LHC (Run 2, Phase 2).Le canal H→ZZ*→4 leptons, a un rapport d'embranchement
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9

Gasperini, Simone. "Performance of the CMS barrel muon trigger algorithms for high luminosity LHC." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/17740/.

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In questa tesi sono state misurate le prestazioni di un nuovo algoritmo per il trigger muonico locale delle camere a deriva di CMS (Compact Muon Solenoid). L'algoritmo è stato sviluppato e proposto da un gruppo di ricercatori dell'INFN di Padova, in vista del futuro upgrade sull'acceleratore di particelle LHC (Large Hadron Collider), che diventerà High Luminosity LHC, ed il rispettivo upgrade di CMS. In particolare, sono stati svolti studi sulle efficienze e sulle risoluzioni spaziali del nuovo algoritmo comparandole con quelle del sistema di trigger attualmente in uso. Questo lavoro è
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10

Succi, Giovanni. "Analysis of impregnated Niobium-Tin coils for the High-luminosity LHC magnets." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/17800/.

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The High-luminosity project of the LHC calls for the employment of a new technology of superconducting magnets, which will make use of a material never used before, Nb3Sn. Some of the dipole magnets will be replaced inside the accelerator to enhance the collimating system of the beams and will be capable of producing magnetic fields in the order of 12 T, against the 8 T of the present machine. Experimental tests were conducted at the cryogenic laboratory at CERN to study the thermal behavior of a sample of the 11 T dipole under AC losses, with typical values of the input power density in the
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11

Hall, Ben. "Designing the four rod crab cavity for the high-luminosity LHC upgrade." Thesis, Lancaster University, 2012. http://eprints.lancs.ac.uk/76341/.

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This thesis presents the design for a novel compact crab cavity for the HL-LHC upgrade at CERN, Geneva. The LHC requires 400MHz RF cavities that can provide up to 10MV transverse gradient across two to three cavities with suitably low surface fields for continual operation. As a result, a cavity design was required that would be optimised to these new parameters. From initial design studies based on Jefferson Laboratory’s CEBAF deflector, extensive optimization was carried out to design a superconducting crab cavity, dubbed the Four Rod Crab Cavity (4RCC). The design underwent several iteratio
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Gradin, Joakim. "Design and performance studies of a track trigger for the high luminosity LHC." Thesis, Uppsala universitet, Högenergifysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-208691.

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At the high luminosity LHC the current L1 trigger of ATLAS will not be able to reduce the number of events to a level accepted by the higher level triggers. It is therefore of importance to implement new strategies of triggering to be able to continue successful operation. This study examined an RoI-seeded muon track trigger in the Higgs to tau-tau to mu-mu channel and found that the ability to select signal events was very good, even at five times rejection of soft minimum bias events compared to the current trigger. The overall trigger efficiency for selected signal muons is decreased by les
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13

Gonella, Laura [Verfasser]. "Low mass hybrid pixel detectors for the high luminosity LHC upgrade / Laura Gonella." Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://d-nb.info/1045276553/34.

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14

Da, Ros Bryan. "Automatizzazione dei controlli di qualità per i sensori dei moduli dell'Inner Tracker dell'esperimento ATLAS per HL-LHC." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/17813/.

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Il lavoro della mia tesi consiste nell'automatizzazione dei controlli di qualità dei moduli che andranno installati nel nuovo rivelatore interno di ATLAS, l'Inner Tracker, per la Fase II di LHC, High Luminosity - LHC. Per questa fase è previsto un incremento sostanziale della luminosità integrata e del pile-up delle collisioni. Pertanto, alcuni dei rivelatori che LHC ospita subiranno importanti modifiche. Il ruolo dell' INFN, nell'ambito della costruzione di ITk, è di progettare uno dei suoi end-cap. La realizzazione dei moduli che vi saranno installati comprende fasi di costruzione e assem
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15

Mereghetti, Alessio. "Performance evaluation of the SPS scraping system in view of the high luminosity LHC." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/performance-evaluation-of-the-sps-scraping-system-in-view-of-the-high-luminosity-lhc(600579c0-0877-415d-bf8d-32896497b5ff).html.

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Injection in the LHC is a delicate moment, since the LHC collimation system cannot offer adequate protection during beam transfer. For this reason, a complex chain of injection protection devices has been put in place. Among them, the SPS scrapers are the multi-turn cleaning system installed in the SPS aimed at halo removal immediately before injection in the LHC. The upgrade in luminosity of the LHC foresees beams brighter than those currently available in machine, posing serious problems to the performance of the existing injection protection systems. In particular, the integrity of beam-int
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16

Eichhorn, Thomas [Verfasser], and Peter [Akademischer Betreuer] Schleper. "Development of Silicon Detectors for the High-Luminosity LHC / Thomas Eichhorn. Betreuer: Peter Schleper." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2015. http://d-nb.info/1074642643/34.

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17

Roff, Daniel. "The development of CVD diamond tracking detectors for high luminosity experiments at the LHC." Thesis, University of Bristol, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266908.

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Eichhorn, Thomas Valentin [Verfasser], and Peter [Akademischer Betreuer] Schleper. "Development of Silicon Detectors for the High-Luminosity LHC / Thomas Eichhorn. Betreuer: Peter Schleper." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2015. http://nbn-resolving.de/urn:nbn:de:gbv:18-74550.

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19

Abdel, khalek Samah. "Mesure de la section efficace totale proton-proton avec le détecteur ATLAS au LHC." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00962261.

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Celà fait maintenant presque 50 ans qu'on a découvert que la section efficace totale proton-proton augmentait avec l'énergie, alors qu'on pensait précédemment qu'elle deviendrait asymptotiquement constante. Les incertitudes des mesures sur les rayons cosmiques effectuées à haute énergie ne permettent pas de déterminer la forme exacte de l'augmentation de la section efficace avec l'énergie.Le LHC au CERN à Genève fournit des collisions avec une énergie jamais atteinte dans un accélérateur de particule. L'énergie dans le centre de masse était 7 TeV en 2010 - 2011, 8 TeV en 2012 et atteindra 14 T
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20

LUCCHINI, MARCO TOLIMAN. "Evolution of the CMS ECAL performance and R&D Studies for Calorimetry Options at High Luminosity LHC." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2014. http://hdl.handle.net/10281/54816.

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In this thesis the evolution of the CMS ECAL Calorimeter performance during the HL-LHC operating condition is estimated. A detailed picture of radiation damage in lead tungstate crystals is obtained with the analysis of beam test data. Given the necessity of the upgrade of the CMS endcap calorimeters, new scintillators which can withstand high levels of radiation have been study as candidates for calorimetry application under HL-LHC conditions. In particular, results obtained in test beam with calorimetric module made of brass and LuAG:Ce single crystalline fibers are presented.
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Heller, M. "Mesure de la luminosité absolue et de la section efficace totale proton-proton dans l'expérience ATLAS au LHC." Phd thesis, Université Paris Sud - Paris XI, 2010. http://tel.archives-ouvertes.fr/tel-00491316.

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Le Large Hadron Collider (LHC) au CERN à Genève délivrera bientôt des collisions avec une énergie jamais atteinte jusqu'alors dans un accélérateur de particules. Une énergie dans le centre de masse entre 10 et 14 TeV permettra de dépasser les frontières de la physique actuelle. Le détecteur ATLAS fera la chasse au boson de Higgs et recherchera une nouvelle physique au delà du modèle standard. Tout processus physique est décrit par sa section section efficace. Les détecteurs positionnés aux différents points de collision du LHC déterminerons les taux de comptage associés aux divers processus. C
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Beyer, Julien-Christopher [Verfasser], and Richard [Akademischer Betreuer] Nisius. "Optimisation of pixel modules for the ATLAS inner tracker at the high-luminosity LHC / Julien-Christopher Beyer ; Betreuer: Richard Nisius." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2019. http://d-nb.info/118357228X/34.

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23

GEROSA, RAFFAELE ANGELO. "Search for new particles decaying into vector boson pairs at LHC with the CMS detector and prospects for the vector boson scattering at the future High Luminosity LHC." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2015. http://hdl.handle.net/10281/94351.

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This thesis presents a three year work inside the Compact Muon Solenoid (CMS) collaboration, mainly focused on data analysis from proton-proton collisions collected by the Large Hadron Collider (LHC) at a centre of mass energy of 8 TeV (LHC Run-I). My efforts were dedicated to searches for heavy particles decaying into di-boson pairs exploring boosted topologies, where the fragmentation products of hadronically decaying vector bosons overlap in the detector, preventing their identification as resolved jets. Several benchmark scenarios for new physics have been considered, from heavy Standard
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Calandri, Alessandro. "Propriétés du Boson de Higgs se désintégrant en 4 leptons au LHC dans l’expérience ATLAS : masse, limite sur la contribution à haute masse et sur la largeur." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112115/document.

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Le thème des analyses présentées dans ce document est la mesure des propriétés du boson de Higgs se désintégrant dans le mode H→ZZ→4l dans l'expérience ATLAS au CERN. Le document commence par un résumé détaillé concernant la procédure d'étalonnage des électrons: l'algorithme de combinaison trace-cluster améliore la résolution en énergie (surtout pour les électrons ayant une faible énergie transverse) en exploitant les informations du cluster et de la trace dans un ajustement par maximum de vraisemblance. L'amélioration en résolution est approximativement de 18-20% pour les désintégrations du J
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Herkert, Adrian [Verfasser], and André [Akademischer Betreuer] Schöning. "Characterization of a Monolithic Pixel Sensor Prototype in HV-CMOS Technology for the High-Luminosity LHC / Adrian Herkert ; Betreuer: André Schöning." Heidelberg : Universitätsbibliothek Heidelberg, 2020. http://d-nb.info/1205002774/34.

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Cavalier, Sophie. "Détermination des paramètres optiques nécessaires pour la mesure de la luminosité absolue et de la section efficace totale dans ATLAS." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00870367.

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ALFA (Absolute Luminosity for ATLAS) vise à mesurer la luminosité absolue pour l'expérience ATLAS avec une incertitude de 2 - 3\% et la section efficace totale. La luminosité est reliée au nombre d'événements. Plus la luminosité est élevée, plus le nombre d'événements est élevé. C'est donc une quantité importante pour les collisionneurs en général et notamment pour le LHC (Large Hadron Collider). LHC est constitué de deux faisceaux circulant dans deux chambres à vide différentes et collisionnant aux quatre points d'interaction où les principales expériences de physique sont positionnées (ATLAS
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Ali, Babar. "Study of the performance of the Level-1 track trigger in the H→ττ→ee channel in ATLAS at high luminosity LHC". Thesis, Uppsala universitet, Högenergifysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-208333.

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28

Hallsjö, Sven-Patrik. "Search for Dark Matter in the Upgraded High Luminosity LHC at CERN : Sensitivity of ATLAS phase II upgrade to dark matter production." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-107583.

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The LHC at CERN is now undergoing a set of upgrades to increase the center of mass energy for the colliding particles to be able to explore new physical processes. The focus of this thesis lies on the so called phase II upgrade which will preliminarily be completed in 2023. After the upgrade the LHC will be able to accelerate proton beams to such a velocity thateach proton has a center of mass energy of 14 TeV. One disadvantage of the upgrade is that it will be harder for the atlas detector to isolate unique particle collisions since more and more collisions will occur simultaneously, so calle
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Paggi, Giulia. "Sviluppo di un algoritmo di trigger per la ricerca di particelle esotiche a lunga vita media a High Luminosity LHC con il rivelatore di muoni di CMS." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21605/.

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In questa tesi si è sviluppato un nuovo algoritmo di trigger per la selezione di particelle esotiche, che fa uso delle DT di CMS, nel contesto dell'upgrade di rivelatore e sistema di trigger, in preparazione per HL-LHC. Si fa uso dell'algoritmo Analytical Method (AM) che genera i segmenti di trigger nelle camere DT, con una risoluzione temporale di alcuni ns, migliorando quasi di un ordine di grandezza le prestazioni rispetto al sistema attuale. Questo permette di aumentare l'accettanza di selezione per HSCP, che attraversano il rivelatore con una velocità significativamente minore di quella d
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Morrone, Marco. "Thermomechanical study of complex structures in the aperture of superconducting magnets : application to the design of the High-Luminosity LHC shielded beam screen." Thesis, Imperial College London, 2018. http://hdl.handle.net/10044/1/60584.

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In the framework of the High-Luminosity Large Hadron Collider (HL-LHC) project, a complex structure, known as the beam screen, will be installed by 2024 in the aperture of the inner triplet superconducting magnets nearby the ATLAS and CMS experiments. The beam screen is an octagonal shaped pipe that shields the 1.9 K magnet cryogenic system from the heat loads and damage to the magnet coils that would be otherwise induced by the highly penetrating collision debris. It also ensures that the vacuum conditions, required for the stability of the beam, are met. This thesis describes the design of t
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Bassalat, Ahmed. "Contribution to the construction of the Insertable B-Layer of ATLAS for high luminosity upgrade and Research for invisible Higgs." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS245.

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Pour la deuxième période de prise des données du LHC (Run 2) de 2015 - 2022, une quatrième couche de senseurs pixels a été installée dans le détecteur de l’existence ATLAS sur un tube de faisceau de plus petit diamètre afin d’ajouter de la redondance pour améliorer la reconstruction des trajectoires des particules chargées. Ce détecteur du pixel permettra d’assurer un suivi de la qualité de l’étiquetage des mesons b haute luminosité (b-tagging). Au cours des deux dernières années plusieurs composants ont été produits et assemblés sur des structures de soutien appelées échelles. Au total, 20 éc
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ZUOLO, DAVIDE. "Development of silicon pixel sensors for the High Luminosity upgrade of the CMS experiment at LHC and search for Higgs boson pair production in the $bar b au^+ au^- :$ final state at $sqrt{s}$ = 13 TeV." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2021. http://hdl.handle.net/10281/308715.

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Durante il mio percorso di dottorato mi sono occupato principalmente dello sviluppo di nuovi sensori a pixel in Silicio per l’upgrade dell’esperimento CMS in vista della fase ad alta luminosità del collisionatore LHC (HL – LHC o LHC fase 2) al CERN, un’attività che avevo già intrapreso per il mio lavoro di tesi magistrale. Questi sensori devono tollerare fluenze di radiazione di alcuni 10^16 neq/cm^2 ad una distanza di circa 3 cm dal punto di interazione. Il programma di R&amp;D portato avanti da un gruppo INFN ATLAS-CMS, in collaborazione con Fondazione Bruno Kessler, riguarda lo sviluppo di
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Brahimi, Nihal. "Search for the Higgs boson in the ttH(H->bb) channel and measurement of the production cross-section of ttbb with the ATLAS detector at the LHC." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0337.

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Depuis la découverte du boson de Higgs par les expériences ATLAS et CMS en juillet 2012, il est devenu crucial de mesurer ses propriétés, tel que son couplage aux fermions, pour établir sa nature et déceler toute déviation possible par rapport aux prédictions du Modèle Standard. Le couplage Yukawa du quark top est le plus fort et ainsi joue un rôle majeur dans la découverte de nouvelle physique. La production du boson de Higgs en association avec une paire de quark top et sa désintégration en deux quarks b, ttH(H-&gt;bb), donne accès à ce couplage. Bien que la production ttH a été récemment ét
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Navarro, Jose Luis La Rosa. "Measurement of Z boson production in association with b-jets in proton-proton collisions at 13 TeV and studies of an electron trigger system for high luminosity in the ATLAS experiment." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-09112017-024133/.

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This thesis will present results on the measurement of Z boson production in the electron channel associated with b-jets in proton-proton collision at 13 TeV, a measurement of fundamental interest in precision measurements and physics searches. This measurement represents important precision tests of perturbative QCD and provides information related to the b-quark inside of the proton. This measurement also represents one of the main sources of background in top quark production studies, Higgs precision measurements and the search for supersymmetric particles. The results on cross section meas
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Haughton, Iain William Philip. "3D detectors for the High Luminosity LHC, with a feasibility study into the observation of ZZ production in the Z → ee/μμ, Z → ττ channel with the ATLAS detector". Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/3d-detectors-for-the-high-luminosity-lhc-with-a-feasibility-study-into-the-observation-of-zz-production-in-the-z--ee-z---channel-with-the-atlas-detector(822c2a2f-d051-4f7b-b3a5-1bc890883d29).html.

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This thesis presents three bodies of work related to the ATLAS detector and physics measurements at the high luminosity frontier. The first investigates the use of 3D silicon detectors at the High Luminosity LHC. Several sensors are irradiated up to a fluence equal to that expected in the ATLAS pixel detector layers, and tests into their radiation tolerance performed. The second continues along a similar theme and pertains to the application of the 3D principle in an intrinsically more radiation tolerant material – diamond. The fabrication and testing of the first prototype 3D diamond detector
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Chen, Zongde. "Depleted CMOS sensor development for pixel particle detectors under high intensity and high radiative dose." Thesis, Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0430.

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Le trajectographe interne (ITk) de l'expérience ATLAS sera amélioré pour la nouvelle phase de prise de données du grand collisionneur de hadrons du CERN à haute luminosité (HL-LHC) en 2026. Le HL-LHC fonctionnera avec l’énergie nominale de collision est de 14 TeV et la luminosité instantanée maximale de 7,5 x (10)34 cm(−2) s(−1), cinq fois plus élevée qu’à présent. La luminosité accrue se traduira par des niveaux de rayonnement et des débits de données environ dix fois plus élevés. Afin de faire face aux exigences d’ATLAS en termes d’intensite du rayonnement, de vitesse de lecture et de granul
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Madysa, Nico [Verfasser], Arno [Akademischer Betreuer] Straessner, and Peter [Gutachter] Krieger. "Simulation Studies of Digital Filters for the Phase-II Upgrade of the Liquid-Argon Calorimeters of the ATLAS Detector at the High-Luminosity LHC / Nico Madysa ; Gutachter: Peter Krieger ; Betreuer: Arno Straessner." Dresden : Technische Universität Dresden, 2021. http://d-nb.info/1236383737/34.

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38

Bhatt, Heeral. "Design and Development of the Beam Position Monitor Calibration Test Bench : For testing the electrical parameters of the new High Luminosity Large Hadron Collider (HL-LHC) Beam Position Monitors using the Concurrent Engineering Approach." Thesis, Luleå tekniska universitet, Rymdteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-81200.

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39

Wiik-Fuchs, Liv [Verfasser], Karl [Akademischer Betreuer] Jakobs, and Jochen [Akademischer Betreuer] Dingfelder. "Search for heavy lepton resonances decaying to a Z Boson and a lepton in proton-proton at [radical]s = 8 TeV with the ATLAS detector and investigations of radiation tolerant silicon strip detectors for the high-luminosity LHC upgrade of the ATLAS inner detector." Freiburg : Universität, 2016. http://d-nb.info/1134884028/34.

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Mårtensson, Oskar. "LHCb Upstream Tracker box : Thermal studies and conceptual design." Thesis, Umeå universitet, Institutionen för fysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-116163.

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The LHC (Large Hadron Collider) will have a long shut down in the years of 2019 and 2020, referred to as LS2. During this stop the LHC injector complex will be upgraded to increase the luminosities, which will be the first step of the high luminosity LHC program (which will be realized during LS3 that takes place in 2024-2026). The LHCb experiment, whose main purpose is to study the CP-violation, will during this long stop be upgraded in order to withstand a higher radiation dose, and to be able to read out the detector at a rate of 40MHz,compared to 1MHz at present. This change will improve t
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Schmitt, Sebastian [Verfasser], and André [Akademischer Betreuer] Schöning. "Measurement of the Inclusive pp->Z/gamma*->e+e- Cross Section at sqrt(s) = 7 TeV with the ATLAS Experiment and Design Studies for a First Level Track Trigger for the ATLAS Trigger Upgrade at the future High Luminosity LHC / Sebastian Schmitt ; Betreuer: André Schöning." Heidelberg : Universitätsbibliothek Heidelberg, 2013. http://d-nb.info/1177382881/34.

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RICCI, ALESSANDRO MARIA. "Superconducting magnets for future accelerators." Doctoral thesis, Università degli studi di Genova, 2020. http://hdl.handle.net/11567/1002038.

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The Large Hadron Collider (LHC) at CERN, which is now in operation for ten years, is not only the largest and more powerful particle accelerator in the world, but also constitutes one of the greatest applications of the superconducting magnet technology. Nevertheless, the need to increase both the luminosity in the next future and the energy in more far future is demanding for the developments of new and more challenging superconducting magnets generating higher magnetic fields. Presently all laboratories worldwide involved in the superconducting magnet technology for accelerators are performi
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43

Asbah, Nedaa. "LHC luminosity measurement with the ATLAS-MPX detectors." Thèse, 2013. http://hdl.handle.net/1866/10714.

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En opération depuis 2008, l’expérience ATLAS est la plus grande de toutes les expériences au LHC. Les détecteurs ATLAS- MPX (MPX) installés dans ATLAS sont basés sur le détecteur au silicium à pixels Medipix2 qui a été développé par la collaboration Medipix au CERN pour faire de l’imagerie en temps réel. Les détecteurs MPX peuvent être utilisés pour mesurer la luminosité. Ils ont été installés à seize différents endroits dans les zones expérimentale et technique d’ATLAS en 2008. Le réseau MPX a recueilli avec succès des données indépendamment de la chaîne d’enregistrement des données ATLAS de
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(9385172), Simran Sunil Gurdasani. "Pixel Sensor Module Assembly Procedures for The CMS High Luminosity LHC Upgrade." Thesis, 2020.

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<p>The high luminosity phase of the LHC, poised to start taking data in 2027, aims to increase the instantaneous luminosity of the machine to 7.5 x 10<sup>34</sup> cm<sup>-2</sup> s<sup>-1</sup>. This will make it possible for experiments at CERN to make higher precision measurements on known physics phenomenon as well as to search for “new physics”. However, this motivates the need for hardware upgrades at the various experiments in order to ensure compatibility with the HL-LHC. This thesis describes some of the efforts to upgrade the inner-most layers of the Compact Muon Solenoid, namely the
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45

Shroff, Maheyer Jamshed. "A data injector for the High Luminosity LHC ATLAS Liquid Argon Signal Processor." Thesis, 2020. http://hdl.handle.net/1828/12082.

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A test-bench is created that injects digital pulses that emulate ATLAS LAr Front End Board electronic signal pulses in order to test prototypes. The prototypes are for new electronics for an upgrade to the CERN Large Hadron Collider that increases the rate of proton-proton collisions by an order of magnitude. This High-Luminosity Large Hadron Collider requires a completely new Trigger and Data Acquisition system to deal with information from detectors. One such system that is currently being developed is the Liquid Argon Signal Processor (LASP) whose architecture is based on Field Programmabl
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Rieger, Julia. "Detector Development for the High Luminosity Large Hadron Collider." Doctoral thesis, 2016. http://hdl.handle.net/11858/00-1735-0000-0028-8802-8.

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Um das Entdeckungspotential des Large Hadron Colliders auszunutzen, wird er beginnend 2024 zum High Luminosity Large Hadron Collider ausgebaut. Neue Detektorherausforderungen entstehen durch die höhere instantane Luminosität und den höheren Teilchenfluss. Der neue ATLAS Inner Tracker wird den aktuellen Spurdetektor ersetzen, um mit diesen Herausforderungen umzugehen. Es gibt viele Pixeldetektortechnologien zur Teilchenspurerkennung, jedoch muss ihre Eignung für den ATLAS Inner Tracker untersucht werden. Aktive Hochspannungs-CMOS-Sensoren, die in industriellen Prozessen produziert werden, biete
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Buschmann, Eric. "The Readout System for the ITk Pixel Demonstrator for the ATLAS High-Luminosity Upgrade." Doctoral thesis, 2020. http://hdl.handle.net/21.11130/00-1735-0000-0005-13B5-9.

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Nguyen, Thong Quang. "Searches for Nonresonant Higgs Boson Pair Production and Long-Lived Particles at the LHC and Machine-Learning Solutions for the High-Luminosity LHC Era." Thesis, 2022.

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<p>This thesis presents two physics analyses using 137 fb<sup>−1</sup> proton-proton collision data collected by the CMS experiment at √s = 13 TeV, along with a series of machine-learning solutions to extend the physics program at the LHC and to address the computational challenges in the High-Luminosity LHC era. The first analysis searches for nonresonant Higgs boson pair production in final states with two photons and two bottom quarks, with no significant deviation from the background-only hypothesis observed. The observed (expected) upper limit on the product of the Higgs boson pair produc
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49

Madysa, Nico. "Simulation Studies of Digital Filters for the Phase-II Upgrade of the Liquid-Argon Calorimeters of the ATLAS Detector at the High-Luminosity LHC." 2020. https://tud.qucosa.de/id/qucosa%3A75152.

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Am Large Hadron Collider und am ATLAS-Detektor werden umfangreiche Aufrüstungsarbeiten vorgenommen. Diese Arbeiten sind in mehrere Phasen gegliedert und umfassen unter Anderem Änderungen an der Ausleseelektronik der Flüssigargonkalorimeter; insbesondere ist es geplant, während der letzten Phase ihren Primärpfad vollständig auszutauschen. Die Elektronik besteht aus einem analogen und einem digitalen Teil: während ersterer die Signalpulse verstärkt und sie zur leichteren Abtastung verformt, führt letzterer einen Algorithmus zur Energierekonstruktion aus. Beide Teile müssen während der Aufrüstung
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"Topics in particle physics: 1) Sensitivity of W H --> lvbb for high luminosity LHC and 2) Study of surface cosmic rays." Thesis, 2014. http://repository.lib.cuhk.edu.hk/en/item/cuhk-1292108.

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Kwok, Ka Hei Martin = 粒子物理專題 : 1) 在高亮度LHC中的W H --> lvbb的靈敏度及2) 地表宇宙射線研究 / 郭家希.<br>Thesis M.Phil. Chinese University of Hong Kong 2014.<br>Abstracts also in Chinese.<br>Title from PDF title page (viewed on 20, December, 2016).<br>Kwok, Ka Hei Martin = Li zi wu li zhuan ti : 1) Zai gao liang du LHC zhong de W H --> lvbb de ling min du ji 2) di biao yu zhou she xian yan jiu / Guo Jiaxi.
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