Download or read book Calibration of Light Response for the NEXO Neutrinoless Double Beta Decay Search with Machine Learning written by Prakash Gautam and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutrinoless double beta decay (0[nu][beta][beta]) is a rare second-order process that, if observed, would confirm that neutrinos are Majorana fermions. This process violates the conservation of lepton number and hence would provide yet another indication of physics beyond the Standard Model (SM). EXO-200 was an experiment aiming to detect 0[nu][beta][beta], and nEXO is the next generation experiment proposed as a successor to EXO-200 using enriched 136Xe in a time projection chamber. It is projected that nEXO will reach a sensitivity of 1.35×1028yr to the 0[nu][beta][beta] half life of 136Xe with 10 years of data taking. nEXO uses silicon photomultipliers (SiPMs) for light detection. Calibration of SiPMs is very important to meet the energy resolution requirement of
Download or read book Radon Injection for Light Response Calibration of the NEXO Detector written by Erin V. Hansen and published by . This book was released on 2019 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutrinoless double beta decay (0vbb) is a second-order process that occurs in isotopes for which single beta decay is energetically forbidden. Observation of 0vbb would demonstrate that the neutrino is a Majorana particle and would violate total lepton number conservation. The nEXO experiment will search for 0vbb of 136-Xe using 5 tonnes of enriched liquid xenon in a low-background single-phase time projection chamber. nEXO is expected to reach a 10 year sensitivity to the 0vbb halflife of 136-Xe of approximately 10^28 years. This dissertation presents a novel technique for calibrating the response of the nEXO detector to scintillation signals using an injection of radon into the xenon recirculation loop. The baseline calibration plan for nEXO is a series of external gamma-ray sources which suffer from xenon's self-shielding properties. Dissolved calibration sources, on the other hand, are capable of characterizing the center of nEXO's large drift chamber, especially when complemented by liquid xenon fluid simulations. Better characterization of the detector response to light improves the energy resolution of the detector and therefore its sensitivity to the halflife of 0vbb. I present results from an end-of run calibration campaign on nEXO's predecessor experiment, EXO-200, using two candidate isotopes: 220-Rn and 222-Rn. I report observed alpha populations, efficiency corrections, and validation of EXO-200 fluid simulations using these data. This work also presents a new framework that combines fluid simulations with nEXO Monte Carlo to produce position-dependent functions of the detector response to light. Finally, I propose possible calibration schemes for radon injection for the nEXO detector.
Download or read book Search for Neutrinoless Double Beta Decay with EXO 200 and NEXO written by Michael Joseph Jewell and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutrinoless Double Beta Decay is a theorized nuclear decay in which a nucleus decays via the emission of two electrons but no neutrinos. Detection of this lepton number violating process represents the best test of the Majorana nature of neutrinos, which could potentially provide an elegant mechanism by which neutrinos obtain mass. Both the recently decommissioned EXO-200 and the future experiment nEXO search for this hypothesized decay using liquid xenon time projection chambers filled with xenon enriched in the isotope Xe136. In the first part of this work, the results from the final neutrinoless double beta decay search of EXO-200 with the complete dataset is presented. This includes a description of the advanced analysis techniques used to maximize the topological discrimination between double beta signal and gamma backgrounds. The second part of this work presents the current state of R\& D efforts towards designing the planned tonne scale experiment, with focus on the characterization of charge-detecting tiles which are proposed to make up the anode plane of nEXO.
Download or read book Energy Calibration for a Sensitive Search for Neutrinoless Double beta Decay written by and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calibration of the LEGEND 200 Experiment to Search for Neutrinoless Double Beta Decay and Searches for Signatures of New Physics with the GERDA Experiment written by Yannik Müller and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutrino Mass written by Guido Altarelli and published by Springer. This book was released on 2004-02-24 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews the current state of knowledge of neutrino masses and the related question of neutrino oscillations. After an overview of the theory of neutrino masses and mixings, detailed accounts are given of the laboratory limits on neutrino masses, astrophysical and cosmological constraints on those masses, experimental results on neutrino oscillations, the theoretical interpretation of those results, and theoretical models of neutrino masses and mixings. The book concludes with an examination of the potential of long-baseline experiments. This is an essential reference text for workers in elementary-particle physics, nuclear physics, and astrophysics.
Download or read book Nuclear Physics written by National Research Council and published by National Academies Press. This book was released on 2013-02-25 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: The principal goals of the study were to articulate the scientific rationale and objectives of the field and then to take a long-term strategic view of U.S. nuclear science in the global context for setting future directions for the field. Nuclear Physics: Exploring the Heart of Matter provides a long-term assessment of an outlook for nuclear physics. The first phase of the report articulates the scientific rationale and objectives of the field, while the second phase provides a global context for the field and its long-term priorities and proposes a framework for progress through 2020 and beyond. In the second phase of the study, also developing a framework for progress through 2020 and beyond, the committee carefully considered the balance between universities and government facilities in terms of research and workforce development and the role of international collaborations in leveraging future investments. Nuclear physics today is a diverse field, encompassing research that spans dimensions from a tiny fraction of the volume of the individual particles (neutrons and protons) in the atomic nucleus to the enormous scales of astrophysical objects in the cosmos. Nuclear Physics: Exploring the Heart of Matter explains the research objectives, which include the desire not only to better understand the nature of matter interacting at the nuclear level, but also to describe the state of the universe that existed at the big bang. This report explains how the universe can now be studied in the most advanced colliding-beam accelerators, where strong forces are the dominant interactions, as well as the nature of neutrinos.
Download or read book Connecting Quarks with the Cosmos written by National Research Council and published by National Academies Press. This book was released on 2003-03-12 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances made by physicists in understanding matter, space, and time and by astronomers in understanding the universe as a whole have closely intertwined the question being asked about the universe at its two extremesâ€"the very large and the very small. This report identifies 11 key questions that have a good chance to be answered in the next decade. It urges that a new research strategy be created that brings to bear the techniques of both astronomy and sub-atomic physics in a cross-disciplinary way to address these questions. The report presents seven recommendations to facilitate the necessary research and development coordination. These recommendations identify key priorities for future scientific projects critical for realizing these scientific opportunities.
Download or read book Nuclear Physics written by National Research Council and published by National Academies Press. This book was released on 1999-03-31 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dramatic progress has been made in all branches of physics since the National Research Council's 1986 decadal survey of the field. The Physics in a New Era series explores these advances and looks ahead to future goals. The series includes assessments of the major subfields and reports on several smaller subfields, and preparation has begun on an overview volume on the unity of physics, its relationships to other fields, and its contributions to national needs. Nuclear Physics is the latest volume of the series. The book describes current activity in understanding nuclear structure and symmetries, the behavior of matter at extreme densities, the role of nuclear physics in astrophysics and cosmology, and the instrumentation and facilities used by the field. It makes recommendations on the resources needed for experimental and theoretical advances in the coming decade.
Download or read book The Physics Of The Standard Model And Beyond written by Chong-sa Lim and published by World Scientific. This book was released on 2004-04-22 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a unified description of elementary particle interactions and the underlying theories, namely the Standard Model and beyond. The authors have aimed at a concise presentation but have taken care that all the basic concepts are clearly described. Written primarily for graduate students in theoretical and experimental particle physics, The Physics of the Standard Model and Beyond conveys the excitement of particle physics, centering upon experimental observations (new and old) and a variety of ideas for their interpretation.
Download or read book Fundamentals of Neutrino Physics and Astrophysics written by Carlo Giunti and published by Oxford University Press. This book was released on 2007-03-15 with total page 727 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our Universe is made of a dozen fundamental building blocks. Among these, neutrinos are the most mysterious - but they are the second most abundant particles in the Universe. This book provides detailed discussions of how to describe neutrinos, their basic properties, and the roles they play in nature.
Download or read book Elementary Particle Physics written by Andrew J. Larkoski and published by Cambridge University Press. This book was released on 2019-05-23 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduces the fundamentals of particle physics with a focus on modern developments and an intuitive physical interpretation of results.
Download or read book Measurements of Neutrino Mass written by F. Ferroni and published by IOS Press. This book was released on 2009-09-29 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume offers a valuable insight into various aspects of the ongoing work directed at measuring neutrino mass. It took twenty years to refute the assertions of Bethe and Peierls that neutrinos were not observable, but it has since been realised that much can be learnt from these particles. The moral is, as Fiorini argues here, that the study of neutrinos was and remains demanding but rewarding. Subjects addressed in this volume include; clarifying the meaning of the Klapdor-Kleingrothaus results, probing the Majorana nature of neutrinos, observing lepton number violating effects for the first time, studying the end point of the spectrum in the search for neutrino masses and speculating whether it is possible to measure neutrino masses in cosmology. Lectures are enriched with rich historical overviews and valuable introductory material. Attention is also given to theoretical topics such as the evolution of the concept of mass in particle physics, a status report on neutrino oscillations and current discussion on neutrino masses. The reader is further reminded that neutrino masses may also have some bearing on the very origin of the matter among us, and have many deep links with other important lines of current physics research.
Download or read book Neutrino Physics written by E. Bellotti and published by IOS Press. This book was released on 2003-12-08 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutrino physics contributed in an fundamental way to the progress of science, opening important windows of knowledge in elementary particle physics, as well in astrophysics and cosmology. Substantial experimental efforts are presently dedicated to improve our knowledge on neutrino properties as, in fact, we don't know yet some of the basic ones. Although very significant steps forward have been done, neutrino masses and mixings still remain largely unknown and constitute an important field for future research. Are neutrinos Majorana or Dirac particles? Have they a magnetic moment? Historically, studies on weak processes and, therefore, on neutrino physics, provided first the Fermi theory of weak interactions and then the V-A theory. Finally, the observation of weak neutral currents provided the first experimental evidence for unification of weak and electromagnetic interactions by the so called "Standard Model' of elementary particles. In addition to the results obtained from the measurement of the solar neutrino flux, the study of atmospheric neutrinos strongly supports the hypothesis of neutrino oscillation among different flavours. At the same time, the detection of neutrinos emitted by our Sun gave an important confirmation that the Sun produces energy via a chain of nuclear reactions; in particular in our Sun a specific cycle - the hydrogen cycle - is responsible for practically all the produced energy.
Download or read book Accelerator Instrumentation written by Edward R. Beadle and published by American Institute of Physics. This book was released on 1990 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Report Nuclear Science Division written by Lawrence Berkeley Laboratory. Nuclear Science and published by . This book was released on 1973 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book From the Fermi Scale to Cosmology written by Alberto Salvio and published by Frontiers Media SA. This book was released on 2019-12-06 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt:
