Luminosity Measurement at the Compact Muon Solenoid Experiment of the LHC

Luminosity Measurement at the Compact Muon Solenoid Experiment of the LHC
Title Luminosity Measurement at the Compact Muon Solenoid Experiment of the LHC PDF eBook
Author Olena Karacheban
Publisher Springer
Pages 153
Release 2018-06-22
Genre Science
ISBN 3319931393

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This book describes the application of a novel technology for beam instrumentation and luminosity measurement and first results on a cutting edge technology potentially to be used after the upgrade of the Large Hadron Collider to higher luminosity. It presents a unique diamond-based luminometer with a detailed performance study. The online bunch-by-bunch luminosity measurements provide an invaluable feedback to the Collider for beam optimisation and for the understanding of beam dynamics. The precision of the luminosity measurement is crucial for all physics analyses. This book highlights the Van der Meer method, which is used for the calibration of the luminometers of the CMS (Compact Muon Solenoid) experiment, and describes the estimate of systematic uncertainties, e.g. due to radiation damage of sensors and electronics and uncertainties of beam parameters. For the future high-luminosity upgrade of the collider, sapphire sensors are investigated in a test beam. It is demonstrated for the first time that sapphire sensors can be used as single particle detectors. A model for the charge transport in sapphire is developed and successfully applied.

Shifting Standards

Shifting Standards
Title Shifting Standards PDF eBook
Author Allan Franklin
Publisher University of Pittsburgh Press
Pages 362
Release 2018-11-24
Genre Science
ISBN 0822979195

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In Shifting Standards, Allan Franklin provides an overview of notable experiments in particle physics. Using papers published in Physical Review, the journal of the American Physical Society, as his basis, Franklin details the experiments themselves, their data collection, the events witnessed, and the interpretation of results. From these papers, he distills the dramatic changes to particle physics experimentation from 1894 through 2009. Franklin develops a framework for his analysis, viewing each example according to exclusion and selection of data; possible experimenter bias; details of the experimental apparatus; size of the data set, apparatus, and number of authors; rates of data taking along with analysis and reduction; distinction between ideal and actual experiments; historical accounts of previous experiments; and personal comments and style. From Millikan's tabletop oil-drop experiment to the Compact Muon Solenoid apparatus measuring approximately 4,000 cubic meters (not including accelerators) and employing over 2,000 authors, Franklin's study follows the decade-by-decade evolution of scale and standards in particle physics experimentation. As he shows, where once there were only one or two collaborators, now it literally takes a village. Similar changes are seen in data collection: in 1909 Millikan's data set took 175 oil drops, of which he used 23 to determine the value of e, the charge of the electron; in contrast, the 1988-1992 E791 experiment using the Collider Detector at Fermilab, investigating the hadroproduction of charm quarks, recorded 20 billion events. As we also see, data collection took a quantum leap in the 1950s with the use of computers. Events are now recorded at rates as of a few hundred per second, and analysis rates have progressed similarly. Employing his epistemology of experimentation, Franklin deconstructs each example to view the arguments offered and the correctness of the results. Overall, he finds that despite the metamorphosis of the process, the role of experimentation has remained remarkably consistent through the years: to test theories and provide factual basis for scientific knowledge, to encourage new theories, and to reveal new phenomenon.

The Search and Discovery of the Higgs Boson

The Search and Discovery of the Higgs Boson
Title The Search and Discovery of the Higgs Boson PDF eBook
Author Luis Roberto Flores Castillo
Publisher Morgan & Claypool Publishers
Pages 104
Release 2016-01-01
Genre Science
ISBN 1681741423

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This book provides a general description of the search for and discovery of the Higgs boson (particle) at CERN’s Large Hadron Collider. The goal is to provide a relatively brief overview of the issues, instruments and techniques relevant for this search; written by a physicist who was directly involved. The Higgs boson mat be the one particle that was studied the most before its discovery and the story from postulation in 1964 to detection in 2012 is a fascinating one. The story is told here while detailing the fundamentals of particle physics.

The Large Hadron Collider

The Large Hadron Collider
Title The Large Hadron Collider PDF eBook
Author Lyndon R. Evans
Publisher EPFL Press
Pages 264
Release 2009-01-01
Genre Hadron colliders
ISBN 9782940222346

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Describes the technology and engineering of the Large Hadron collider (LHC), one of the greatest scientific marvels of this young 21st century. This book traces the feat of its construction, written by the head scientists involved, placed into the context of the scientific goals and principles.

Big Science, Innovation, and Societal Contributions

Big Science, Innovation, and Societal Contributions
Title Big Science, Innovation, and Societal Contributions PDF eBook
Author
Publisher Oxford University Press
Pages 463
Release 2024-03-26
Genre Science
ISBN 0198881231

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Big Science, Innovation, and Societal Contributions offers a connection between Big Science and its societal impacts from a multidisciplinary perspective, drawing on physics and astrophysics scholars to explain the reasoning behind their work, and how such knowledge can be applied to everyday life. Through simplifying complex scientific concepts, Big Science, Innovation, and Societal Contributions explains the evolution of Big Science experiments and what it takes to manage and maintain complex scientific experiments with a human centred approach. Further, it examines the motivations behind international efforts to develop capital-intensive and human resource-rich, large-scale multi-national scientific investments to solve fundamental research problems concerning our future. Drawing on reliable scientific evidence, multi-disciplinary perspectives, and personal insights from collider physics, detectors, accelerator, and telescopes research, the volume outlines the mechanisms, benefits, and methodologies, as well as the potential challenges and short-comings, of Big Science, to learn and reflect on for future initiatives. This is an open access title available under the terms of a [CC BY-NC-ND 4.0 International] licence. It is free to read at Oxford Scholarship Online and offered as a free PDF download from OUP and selected open access locations.

Large Hadron Collider

Large Hadron Collider
Title Large Hadron Collider PDF eBook
Author
Publisher PediaPress
Pages 187
Release
Genre
ISBN

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Proceedings of the 31st International Conference on High Energy Physics ICHEP 2002

Proceedings of the 31st International Conference on High Energy Physics ICHEP 2002
Title Proceedings of the 31st International Conference on High Energy Physics ICHEP 2002 PDF eBook
Author S. Bentvelsen
Publisher Elsevier
Pages 1004
Release 2012-12-02
Genre Science
ISBN 0444599169

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The first precision measurements on CP violation in the B system are reported. Both the BELLE and the BABAR collaboration presented, among others, results for sin 2ß with much improved accuracy. Results from the Sudbury Neutrino Observatory, SNO, also deserve to be mentioned. The convincing evidence of solar neutrino oscillations had been presented by SNO prior to the conference; a full presentation was given at the conference. An incredibly precise measurement of the anomalous magnetic moment of the muon is reported, a fresh result from the Brookhaven National Laboratory. Apart from these distinct physics highlights, there are also the first results from the new Tevatron run and from the relativistic heavy ion collider RHIC. Theorists write of our ever better understanding of the Standard Model and of what might lie beyond. Risky as it is to highlight only a couple of exciting subjects, it is merely meantto whet the appetite for further reading.