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Dissertations / Theses on the topic 'Xenon136'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Levy, Cecilia [Verfasser], and Christian [Akademischer Betreuer] Weinheimer. "Light propagation and reflection off teflon in liquid xenon detectors for the XENON100 and XENON1T dark matter experiments / Cecilia Levy ; Betreuer: Christian Weinheimer." Münster : Universitäts- und Landesbibliothek Münster, 2014. http://d-nb.info/113828226X/34.

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Rauch, Franz Ludwig [Verfasser], and Undagoitia Teresa [Akademischer Betreuer] Marrodan. "From Final Dark Matter Results and Background Shape Uncertainties in XENON100 to First Light in XENON1T / Franz Ludwig Rauch ; Betreuer: Teresa Marrodan Undagoitia." Heidelberg : Universitätsbibliothek Heidelberg, 2017. http://d-nb.info/1178008754/34.

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3

Micheneau, Kévin. "Etude des électrons résiduels dans XENON100." Thesis, Nantes, 2018. http://www.theses.fr/2018NANT4036/document.

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Plusieurs phénomènes gravitationnels indiquent la présence d’une matière non lumineuse, appelée matière noire. Cette dernière est responsable d’environ un quart du budget énergétique total de l’univers. L’un des candidats pressentis pour décrire la matière noire est le WIMP. Pour révéler cette particule par détection directe, la collaboration XENON a développé une chambre à projection temporelle (TPC) à deux phases de xénon : liquide et gazeux. Lorsqu’une particule interagit avec le détecteur XENON100, celle-ci va exciter et ioniser les atomes de xénon. Les photons libérés par la relaxation de

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Toschi, Francesco. "Study of the electronic recoil background of the XENON1T experiment." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15785/.

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Uno dei principali protagonisti della caccia alla Materia Oscura è il Progetto XENON presso i LNGS, con l'obiettivo di rivelare le WIMP. Forti dell'esperienza proveniente dalle precedenti fasi del Progetto, l'attuale esperimento XENON1T è il primo che contiene circa 3.2 t di xenon liquido, di cui circa 2 t costituiscono la massa attiva della TPC a doppia fase. E questa è la prima TPC con massa attiva superiore a 1 t e con il più basso livello di fondo tra tutti gli esperimenti di questo tipo. Nel 2017, con un tempo di esposizione di soli 34.2 giorni, XENON1T ha ottenuto uno dei miglior limit

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Geis, Christopher Werner [Verfasser]. "The XENON1T water Cherenkov muon veto system and commissioning of the XENON1T Dark Matter experiment / Christopher Werner Geis." Mainz : Universitätsbibliothek Mainz, 2018. http://d-nb.info/116644936X/34.

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6

Rossi, Monica. "Studio delle interazioni dei neutroni nell'esperimento xenon1t." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/6158/.

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La presenza di materia oscura nell'universo venne ipotizzata negli anni '30 a seguito di alcune anomalie nei risultati sperimentali ottenuti in astrofisica e cosmologia. La distribuzione di materia ottenuta non concordava infatti con i dati provenienti dalle osservazioni astronomiche e gli scienziati ipotizzarono l'esistenza di un tipo di materia, denominata appunto materia oscura, che interagisse debolmente con la radiazione elettromagnetica e fosse quindi interamente invisibile ai telescopi, sia che fossero a radiofrequenze che operanti nel campo del visibile o con raggi gamma e X, ma che pr

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7

Girotti, Paolo. "Simulazione Monte Carlo del muon veto dell'esperimento XENON1T." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/12022/.

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Numerose osservazioni astrofisiche e cosmologiche compiute a partire dagli anni '30 confermano che circa il 26% dell'Universo è costituito da materia oscura. Tale materia ha la particolarità di interagire solo gravitazionalmente e, forse, debolmente: essa si presenta massiva e neutra. Tra le numerose ipotesi avanzate riguardanti la natura della materia oscura una delle più accreditate è quella delle WIMP (Weakly Interacting Massive Particle). Il progetto all'avanguardia nella ricerca diretta delle WIMP è XENON presso i Laboratori Nazionali del Gran Sasso (LNGS). Tale esperimento è basato sul

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8

Lamblin, Jacob. "XENON100 et MIMAC, des détecteurs à la recherche de matière noire." Habilitation à diriger des recherches, Université de Grenoble, 2013. http://tel.archives-ouvertes.fr/tel-00845580.

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Le document présente la problématique de la détection directe de matière noire dans le cadre des expériences XENON100 et MIMAC. Après une introduction générale sur la matière noire et sur les signaux attendus dans un détecteur terrestre, les deux projets sont passés en revue en se concentrant sur les aspects expérimentaux. L'accent est mis particulièrement sur la caractérisation des performances des détecteurs et sur les bruits de fonds associés.

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9

Massoli, Fabio Valerio <1987&gt. "The XENON1T experiment: Monte Carlo background estimation and sensitivity curves study." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/6776/.

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Despite the scientific achievement of the last decades in the astrophysical and cosmological fields, the majority of the Universe energy content is still unknown. A potential solution to the “missing mass problem” is the existence of dark matter in the form of WIMPs. Due to the very small cross section for WIMP-nuleon interactions, the number of expected events is very limited (about 1 ev/tonne/year), thus requiring detectors with large target mass and low background level. The aim of the XENON1T experiment, the first tonne-scale LXe based detector, is to be sensitive to WIMP-nucleon cross

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10

Di, Gangi Pietro. "Study of the sensitivity of the XENON1T experiment with the profile likelihood method." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8348/.

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Oggi sappiamo che la materia ordinaria rappresenta solo una piccola parte dell'intero contenuto in massa dell'Universo. L'ipotesi dell'esistenza della Materia Oscura, un nuovo tipo di materia che interagisce solo gravitazionalmente e, forse, tramite la forza debole, è stata avvalorata da numerose evidenze su scala sia galattica che cosmologica. Gli sforzi rivolti alla ricerca delle cosiddette WIMPs (Weakly Interacting Massive Particles), il generico nome dato alle particelle di Materia Oscura, si sono moltiplicati nel corso degli ultimi anni. L'esperimento XENON1T, attualmente in costruzione

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11

Le, Calloch Maxime. "Study of the single electron charge signals in the XENON100 direct Dark Matter search experiment." Nantes, 2014. https://archive.bu.univ-nantes.fr/pollux/show/show?id=f4984b95-6904-4ff8-bcd6-50f3768ac873.

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A partir de l’observation de l’Univers, il a été démontré que la masse associée à la matière visible ne représente que quelques pourcents de son budget énergétique total. La partie restante est composée de l’énergie noire, responsable de l’expansion cosmologique, et d’une matière invisible, la matière noire. La famille de particules la plus probable pour décrire cette matière noire est appelée WIMP. Ces particules peuvent être directement détectées par la mesure du recul nucléaire induit lors d’une diffusion élastique au sein d’un matériau scintillant. Pour cela, la Collaboration XENON a dével

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12

Rocchetti, Arianna. "MonteCarlo simulation of the XENON1T experiment and first comparison with the Muon Veto data." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13513/.

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L’esperimento XENON1T, in acquisizione dati presso i Laboratori Nazionali del Gran Sasso, è una Time Projection Chamber (TPC) contenente 2 t di xeno liquido ed ha come obiettivo una sensibilità per sezioni d'urto WIMP-nucleone indipendenti dallo spin pari a 1.6 10^(-47) cm^(2), per WIMP di massa 50 GeV/c^(2), in 2 t y. A tale scopo è fondamentale la riduzione di tutte le sorgenti di fondo. Per abbattere il fondo esterno la TPC è inserita all'interno di un Muon Veto: una vasca cilindrica riempita di acqua, dotata di 84 fotomoltiplicatori (PMT) , che funge sia da schermo passivo contro la radiaz

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13

Vargas, Miguel Ángel [Verfasser], and Christian [Akademischer Betreuer] Weinheimer. "Data analysis in the XENON1T Dark Matter Experiment / Miguel Ángel Vargas ; Betreuer: Christian Weinheimer." Münster : Universitäts- und Landesbibliothek Münster, 2019. http://d-nb.info/1191375730/34.

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14

Agostini, Federica. "Caratterizzazione e calibrazione dei fotomoltiplicatori del sistema di veto di muoni per l'esperimento xenon1t." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/5955/.

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Alcune osservazioni sperimentali portano ad affermare che la maggior parte della massa dell'universo è costituita da un tipo di materia definita oscura, cioè materia che interagisce solo gravitazionalmente e debolmente. I candidati più promettenti sono tipicamente identificati con le WIMP (Weakly Interacting Massive Particle). L'esperimento XENON1T per la rivelazione di materia oscura, in fase di costruzione nei Laboratori Nazionali del Gran Sasso, sfrutta uno spessore di 1.4 km di roccia schermante. Il rivelatore è una Time Projection Chamber contenente circa 2 tonnellate di xeno e avrà se

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15

Bauermeister, Boris [Verfasser]. "Studies of calibration and electron recoil background modelling for the XENON100 dark matter experiment / Boris Bauermeister." Mainz : Universitätsbibliothek Mainz, 2017. http://d-nb.info/1122763220/34.

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16

Corasaniti, Maria. "Monte Carlo simulation of a neutron veto for the XENONnT experiment." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13974/.

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XENON1T, located at the Laboratori Nazionali del Gran Sasso, is currently the largest experiment for direct dark matter search. It consists of a dual phase TPC filled with 2 tonnes of xenon, and has completed the first science run in January 2017, obtaining the most stringent exclusion limits on the spin-independent WIMP- nucleon interaction cross section for WIMP masses above 10 GeV/c2, with a minimum of 7.7·10−47 cm2 for 35-GeV/c2 WIMPs at 90% confidence level. Currently the experiment is still in data acquisition and aims at a sensitivity of 1.6 · 10−47 cm2 for WIMP masses of 50 GeV/c2 in 2

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17

Weber, Marc [Verfasser], and Wolfgang [Akademischer Betreuer] Hampel. "Gentle Neutron Signals and Noble Background in the XENON100 Dark Matter Search Experiment / Marc Weber ; Betreuer: Wolfgang Hampel." Heidelberg : Universitätsbibliothek Heidelberg, 2013. http://d-nb.info/1177249472/34.

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18

Brünner, Stefan Augustin [Verfasser], and Manfred [Akademischer Betreuer] Lindner. "Mitigation of 222Rn induced background in the XENON1T dark matter experiment / Stefan Augustin Brünner ; Betreuer: Manfred Lindner." Heidelberg : Universitätsbibliothek Heidelberg, 2017. http://d-nb.info/1178009297/34.

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19

Brünner, Stefan A. [Verfasser], and Manfred [Akademischer Betreuer] Lindner. "Mitigation of 222Rn induced background in the XENON1T dark matter experiment / Stefan Augustin Brünner ; Betreuer: Manfred Lindner." Heidelberg : Universitätsbibliothek Heidelberg, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:16-heidok-232613.

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20

Manalaysay, Aaron Gösta. "Response of liquid xenon to low-energy ionizing radiation and its use in the XENON10 dark matter search." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0041109.

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21

Hasterok, Constanze [Verfasser], and Manfred [Akademischer Betreuer] Lindner. "Gas Purity Analytics, Calibration Studies, and Background Predictions towards the First Results of XENON1T / Constanze Hasterok ; Betreuer: Manfred Lindner." Heidelberg : Universitätsbibliothek Heidelberg, 2017. http://d-nb.info/1177688727/34.

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22

Therreau, Chloé. "Analyse de données de l'expérience XENON1T : Calibration des reculs électroniques pour des énergies comprises entre quelques keV et 3 MeV." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2020. http://www.theses.fr/2020IMTA0191.

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Durant le siècle dernier, de nombreuses observations astrophysiques et cosmologiques ont montré la présence de matière noire dans l’Univers. Cette matière noire, non-lumineuse et interagissant peu avec la matière ordinaire, représente 80% de la masse de l’Univers et pourrait être composée de particules massives appelées WIMP. XENON1T est une expérience de détection directe de matière noire, utilisant une chambre à projection temporelle remplie de xénon liquide. Fonctionnant dans un environnement dit de bas bruit de fond, XENON1T fut conçu pour détecter le signal produit par la collision élasti

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23

Cichon, Dominick [Verfasser], and Undagoitia Teresa [Akademischer Betreuer] Marrodán. "Liquid xenon detector physics with XENON1T and HeXe: electric noise stability, background discrimination studies and measurements of the scintillation pulse shape / Dominick Cichon ; Betreuer: Teresa Marrodán Undagoitia." Heidelberg : Universitätsbibliothek Heidelberg, 2021. http://d-nb.info/1225868521/34.

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24

Schindler, Stefan [Verfasser]. "An improved signal model for a dual-phase xenon TPC using Bayesian inference and studies on the software trigger efficiency of the XENON1T DAQ system / Stefan Schindler." Mainz : Universitätsbibliothek der Johannes Gutenberg-Universität Mainz, 2021. http://d-nb.info/1227048599/34.

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25

Rupp, Natascha Margarita Rosa Elisabeth [Verfasser], and Undagoitia Teresa [Akademischer Betreuer] Marrodán. "Radon Induced Background in the XENON1T Dark Matter Search Experiment and Studies on Xenon Purity in the HeXe System / Natascha Margarita Rosa Elisabeth Rupp ; Betreuer: Teresa Marrodán Undagoitia." Heidelberg : Universitätsbibliothek Heidelberg, 2020. http://d-nb.info/1226541704/34.

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Rupp, Natascha [Verfasser], and Undagoitia Teresa [Akademischer Betreuer] Marrodán. "Radon Induced Background in the XENON1T Dark Matter Search Experiment and Studies on Xenon Purity in the HeXe System / Natascha Margarita Rosa Elisabeth Rupp ; Betreuer: Teresa Marrodán Undagoitia." Heidelberg : Universitätsbibliothek Heidelberg, 2020. http://d-nb.info/1226541704/34.

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27

Zucchini, Sara. "Materia oscura: modelli teorici ed evidenze sperimentali." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/12036/.

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Lo scopo di questa tesi è la trattazione della materia oscura partendo dalle evidenze sperimentali, ripercorrendo i possibili costituenti e riportando dati relativi a rivelazioni dirette ed indirette. Il primo capitolo è dedicato alla discussione delle due più importanti evidenze della presenza di materia oscura, ossia le curve di rotazione ed il Bullet Cluster, che risultano entrambe interazioni di tipo gravitazionale. Si provvede inoltre a fornire le due più plausibili soluzioni in grado di spiegare i risultati ottenuti dalle osservazioni sperimentali e a discutere la loro validità come mo

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28

McCowan, Peter. "Precise determination of the 136Xe – 136Ba atomic mass difference and related mass differences in Ba and Cd." 2010. http://hdl.handle.net/1993/3859.

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In light of present (EXO) and future (BOREXINO & XMASS) projects searching for evidence of the, as yet, unobserved double-beta decay of 136Xe, an atomic mass difference of 136Xe – 136Ba was determined using the high-precision Manitoba II mass spectrometer at the University of Manitoba. The Q-value for this difference was determined to be 2458.72(56) keV. The double-beta decay mode can be either neutrino (ββ2υ) or neutrinoless (ββ0υ), where the latter would be proof of the Majorana nature of neutrinos. A ββ0υ decay, which violates several principles of the Standard Model of particle physics, w

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29

"Direct Dark Matter Search with the XENON100 Experiment." Thesis, 2012. http://hdl.handle.net/1911/70350.

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Dark matter, a non-luminous, non-baryonic matter, is thought to constitute 23 % of the matter-energy components in the universe today. Except for its gravitational effects, the existence of dark matter has never been confirmed by any other means and its nature remains unknown. If a hypothetical Weakly Interacting Massive Particle (WIMP) were in thermal equilibrium in the early universe, it could have a relic abundance close to that of dark matter today, which provides a promising particle candidate of dark matter. Minimal Super-Symmetric extensions to the standard model predicts a stable parti

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Lim, Kyungeun. "XENON100 Dark Matter Search: Scintillation Response of Liquid Xenon to Electronic Recoils." Thesis, 2013. https://doi.org/10.7916/D88G8SX0.

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Dark matter is one of the missing pieces necessary to complete the puzzle of the universe. Numerous astrophysical observations at all scales suggest that 23 % of the universe is made of nonluminous, cold, collisionless, nonbaryonic, yet undiscovered dark matter. Weakly Interacting Massive Particles (WIMPs) are the most well-motivated dark matter candidates and significant efforts have been made to search for WIMPs. The XENON100 dark matter experiment is currently the most sensitive experiment in the global race for the first direct detection of WIMP dark matter. XENON100 is a dual-phase (liqui

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Contreras, Palacios Hugo Alejandro. "Research and Development of the Purification and Cryogenic Systems for the XENON1T Dark Matter Experiment." Thesis, 2015. https://doi.org/10.7916/D8WH2P43.

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The evidence supporting the presence of Dark Matter in the universe ranges over many length scales: from the rotational curves within galaxies that cannot be explained only by the dust and other visible component to the anisotropies in the cosmological microwave background that sets the most precise quantification for the DM content in the universe at 26.8% of the energy density. One of the candidates for DM with the most theoretical support is a family of particles that appear in extensions of the Standard Model of Particles. These new particles, known as Weakly Interacting Massive Particles

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32

Anthony, Matthew. "Understanding Low-Energy Nuclear Recoils in Liquid Xenon for Dark Matter Searches and the First Results of XENON1T." Thesis, 2018. https://doi.org/10.7916/D8RN4MBV.

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An abundance of cosmological evidence suggests that cold dark matter exists and makes up 83% of the matter in the universe. At the same time, this dark matter has eluded direct detection and its identity remains a mystery. Many large international collaborations are actively searching for dark matter through its potential annihilation in high-density regions of the universe, its creation in particle accelerators, and its interaction with Standard Model particles in low-background detectors. One of the most promising dark matter candidates is the weakly interacting massive particle (WIMP)

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Choi, Bin. "The Light Response of the XENON100 Time Projection Chamber and the Measurements of the Optical Parameters with the Xenon Scintillation Light." Thesis, 2013. https://doi.org/10.7916/D84Q8262.

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The XENON program is a phased project using liquid xenon as a sensitive detector medium in search for weakly interacting massive particles (WIMPs). These particles are the leading candidates to explain the non-baryonic, cold dark matter in our Universe. XENON100, the successor experiment of XENON10, has increased the target liquid xenon mass to 61 kg with a 100 times reduction in background rate enabling a large increase in sensitivity to WIMP- nucleon interaction cross-section. To-date, the most stringent limit on this cross-section over a wide range of WIMP masses have been obtained with XEN

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"The physics of background discrimination in liquid xenon, and first results from Xenon10 in the hunt for WIMP dark matter." PRINCETON UNIVERSITY, 2010. http://pqdtopen.proquest.com/#viewpdf?dispub=3364532.

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Zhang, Yun. "The Cryogenic Infrastructure of the XENON1T Dark Matter Experiment: from Design to Performance during the One Ton-Year WIMP Search." Thesis, 2021. https://doi.org/10.7916/d8-3jtp-qd41.

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An abundance of evidence from a wide range of astrophysical and cosmological observations suggests the existence of nonluminous cold dark matter, which makes up about 83% of the matter and 27% of the mass-energy of the Universe. Weakly Interacting Massive Particles (WIMPs) have been one of the most promising dark matter candidates. Various detection techniques have been used to directly search for the interaction in terrestrial detectors where WIMP particles are expected to scatter off target nuclei. Over the last fifteen years, dual-phase time projection chambers (TPCs) with liquid xenon (LXe

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Plante, Guillaume. "The XENON100 Dark Matter Experiment: Design, Construction, Calibration and 2010 Search Results with Improved Measurement of the Scintillation Response of Liquid Xenon to Low-Energy Nuclear Recoils." Thesis, 2012. https://doi.org/10.7916/D89P37MT.

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An impressive array of astrophysical observations suggest that 83% of the matter in the universe is in a form of non-luminous, cold, collisionless, non-baryonic dark matter. Several extensions of the Standard Model of particle physics aimed at solving the hierarchy problem predict stable weakly interacting massive particles (WIMPs) that could naturally have the right cosmological relic abundance today to compose most of the dark matter if their interactions with normal matter are on the order of a weak scale cross section. These candidates also have the added benefit that their properties and

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Greene, Zachary. "The XENON1T Spin-Independent WIMP Dark Matter Search Results and a Model to Characterize the Reduction of Electronegative Impurities in Its 3.2 Tonne Liquid Xenon Detector." Thesis, 2018. https://doi.org/10.7916/D87M1RTN.

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Over much of the last century evidence has been building for a new component of our universe that interacts primarily through gravitation. Known as cold dark matter, this non-luminous source is predicted to constitute 83% of matter and 26% of mass-energy in the universe. Experiments are currently searching for dark matter via its possible creation in particle colliders, annihilation in high-density regions of the universe, and interactions with Standard Model particles. So far dark matter has eluded detection so its composition and properties remain a mystery. Weakly interacting massi

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Goetzke, Luke Walker. "Low-Energy Electronic Recoils in Liquid Xenon: Search for Annual Modulation with XENON100, Measurement of Charge and Light Yield with neriX, and Measurement of Krypton in Xenon with ATTA." Thesis, 2015. https://doi.org/10.7916/D8X34WKB.

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An ever-growing body of evidence suggests that dark matter exists and is abundant in our universe. Although the direct detection of dark matter has yet to be realized, the intensity of the experimental and theoretical search continues to amplify. The question is no longer whether dark matter exists, but rather what is its fundamental nature and how can it be known. Many large-scale, international experiments are actively searching for one class of dark matter candidates, weakly interacting massive particles (WIMPs). While indirect searches, such as those looking for the creation of dark matter

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