The Compact Muon Solenoid Experiment at the LHC
Author: S. Cittolin
Publisher:
Published: 2008*
Total Pages: 60
ISBN-13:
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Luminosity Measurement at the Compact Muon Solenoid Experiment of the LHC
Author: Olena Karacheban
Publisher: Springer
Published: 2018-06-22
Total Pages: 153
ISBN-13: 3319931393
DOWNLOAD EBOOKThis 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.
Compact Muon Solenoid (CMS).
Author:
Publisher:
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ISBN-13:
DOWNLOAD EBOOKProvides information about the Compact Muon Solenoid (CMS), a project of the Large Hadron Collider experiments Committee (LHC) of the European Laboratory for Particle Physics (CERN). The CMS will allow detection of a wide range of signatures from alternative electro-weak symmetry breaking mechanisms and will cover important aspects of the heavy ion physics program. Provides information about the organization and institutes of the CMS Collaboration. Offers access to documents, including the letter of intent and the technical proposal. Contains a schedule of meetings and conferences. Links to the home page of CERN.
The Compact Muon Solenoid Experiment
Author: Jim Pivarski
Publisher:
Published: 2021-05-14
Total Pages: 200
ISBN-13: 9789811206481
DOWNLOAD EBOOKThis book presents both the history and scientific background leading to the LHC, the world's collider. The story, as I see it, is an unlikely one without some unexpected developments, we might not have ended up asking the right questions or organized, in the right way, the building of such a large scientific apparatus. Understanding the science is as important as understanding the history, both of which are presented at a level appropriate for an educated layperson or general undergraduate. The historical treatment starts with the discovery of radiation in 1895 and ends with the end of 'naturalness, ' the LHC's most troubling revelation.
Constraining the Supersymmetric Parameter Space with Early Data from the Compact Muon Solenoid Experiment
Author: Tom Whyntie
Publisher:
Published: 2012
Total Pages:
ISBN-13:
DOWNLOAD EBOOKThe year 2010 saw the Large Hadron Collider (LHC) collect 35.1 pb-1 of 7TeV proton-proton collision data. This thesis reports on the work carried out by the candidate as part of the calculation of the first constraints placed upon the supersymmetric parameter space using measurements made with this data. In particular, the development and application of the kinematic techniques used to ensure that the search was robust to detector mismeasurements, inherent in any early phase of data-taking, are discussed. The Constrained Minimally Supersymmetric Standard Model (CMSSM) is introduced to demonstrate how supersymmetry may extend the Standard Model of particle physics, and is used as the benchmark signal to investigate how supersyrnmetry may appear in 7 Te V proton-proton collisions. The role of kinematics in early searches for such signals is then discussed; given the final state topology of interest (particle jets and large missing transverse momentum), particular attention is paid to errors that are due to detector mismeasurements, and how these may be accounted for with an appropriate choice of observable. A search strategy based upon these principles and applied to the Compact Muon Solenoid (CMS) experiment is then described, as used in the first published search for supersymmetry with LHC data reported in Phys. Lett. B 698 (2011) 196. The kinematic characterisation of events discussed above is exploited to ensure that the search is robust to mismeasurement. The thesis concludes with a summary of the search results. The observed number of events fulfilling the signal criteria is compatible with that expected from the Standard Model alone. The subsequent exclusion limits, given at the 95% Confidence Level, place significantly greater constraints upon the supersymmetric parameter space than those of previous experiments.
Electroweak Physics at the LHC
Author: Matthias U. Mozer
Publisher: Springer
Published: 2016-03-24
Total Pages: 121
ISBN-13: 3319303813
DOWNLOAD EBOOKThe book discusses the recent experimental results obtained at the LHC that involve electroweak bosons. The results are placed into an appropriate theoretical and historical context. The work pays special attention to the rising subject of hadronically decaying bosons with high boosts, documenting the state-of-the-art identification techniques and highlighting typical results. The text is not limited to electroweak physics in the strict sense, but also discusses the use of electroweak vector-bosons as tool in the study of other subjects in particle physics, such as determinations of the proton structure or the search for new exotic particles. The book is particularly well suited for graduate students, starting their thesis work on topics that involve electroweak bosons, as the book provides a comprehensive description of phenomena observable at current accelerators as well as a summary of the most relevant experimental techniques.
European Laboratory for Particle Physics (CERN): Compact Muon Solenoid (CMS).
Author:
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Published:
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DOWNLOAD EBOOKPresents information regarding the Compact Muon Solenoid (CMS), a general purpose detector that operates on the Large Hadron Collider (LHC) accelerator at the European Laboratory for Particle Physics (CERN), located in Geneva, Switzerland. Notes that the detector is optimized for search of the Standard Model Higgs boson, as well as the study of top, beauty, and tau physics. Includes information about the organizations and institutes in CMS, experiments, and outreach. Offers access to details about conferences and current news. Explains that much of the information is available in the PDF format. Links to the home page of CERN.
Exploring the Large Hadron Collider - the Detectors
Author: Michael Hauschild
Publisher: Springer Nature
Published: 2022-02-01
Total Pages: 43
ISBN-13: 365833293X
DOWNLOAD EBOOKMichael Hauschild takes the reader of this essential back to September 2008 to the bumpy start of the Large Hadron Collider LHC, the world's largest particle accelerator and today's world machine at CERN, the European Organization for Nuclear Research near Geneva, Switzerland; one of the most fascinating research centers of all. The author explains how the initial ideas led to the creation of the large collaborations at the LHC, alliances of up to 3,000 physicists. It is these collaborations that use huge particle detectors to measure the collisions at the LHC, hoping to discover new particles. After a stop of more than two years, the LHC was put back into operation in the spring of 2015 to discover the secrets of nature at higher energy than ever before. The Author Dr. Michael Hauschild is a particle physicist at CERN in Geneva and has been a member of the ATLAS experiment at the Large Hadron Collider LHC since 2005. During the first long measurement period of the LHC from 2010 to 2012, he witnessed the discovery of the Higgs particle in summer 2012. This Springer essential is a translation of the original German 1st edition essentials, Neustart des LHC: die Detektoren by Michael Hauschild, published by Springer Fachmedien Wiesbaden GmbH, part of Springer Nature in 2018. The translation was done with the help of artificial intelligence (machine translation by the service DeepL.com). A subsequent human revision was done primarily in terms of content, so that the book will read stylistically differently from a conventional translation. Springer Nature works continuously to further the development of tools for the production of books and on the related technologies to support the authors.
Research and Development Studies for CMS at the Super LHC Conditions and Inclusive Search for New Physics at CMD with Jets and Missing Momentum Signature
Author: Elif Asli Albayrak
Publisher:
Published: 2011
Total Pages: 135
ISBN-13:
DOWNLOAD EBOOKThis thesis is composed of two independent parts. The first part is devoted to hadronic endcap calorimeter R & D studies for the Large Hadron Collider (LHC) higher luminosity conditions, whereas in the second part a search for new physics at the Compact Muon Solenoid (CMS) experiment is presented. After a brief introduction to the LHC and the CMS experiment, in the first part R & D studies on the active material of hadronic endcap (HE) calorimeter for compact muon solenoid detector upgrade are presented. We performed radiation damage and beam test studies on several wavelength shifter materials, and found that the p-terphenyl deposited quartz plates give improved light efficiency and they are also radiation hard. As a result we propose to substitute the current HE scintillator tiles with p-terphenyl deposited quartz plates for the higher luminosity era of the Large Hadron Collider. In the second part, an inclusive search for new physics with the jets and missing momentum signature at the Large Hadron Collider is presented for 36pb-1 data collected by the compact muon solenoid detector from March 2010 to November 2010. The emphasis was put on jet resolution measurements for the QCD background estimation with a photon-jet data sample. We did not observe an excess above the background, and thus derived upper limits in the context of R-parity conserving Constrained Minimal Supersymmetric Standard Model (CMSSM) and, more generally in the simplified model spectra. In CMSSM, depending on squark and gluino masses a 95% confidence level (CL) upper limit for cross section of 2-3 pb is obtained, and gluino masses below 500 GeV are excluded with 95% CL for squarks with mass below 1 TeV. In simplified models, depending on the decay chain and mass of the new particles which are pair-produced and decay to to either one or two jets and a dark matter candidate, a 95% CL upper limit on the production cross section in the 0.5-30 pb range is obtained.
At the Leading Edge
Author: Dan Green
Publisher: World Scientific
Published: 2010
Total Pages: 445
ISBN-13: 9814304670
DOWNLOAD EBOOKToo often descriptions of detectors focus on the ?what? and not the ?why?. This volume aims to elucidate how the requirements of the physics at the Large Hadron Collider (LHC) define the detector environment. In turn, the detector choices are made to adopt to that environment. The goal of LHC physics is to explore the mechanism for electroweak symmetry breaking. Because of the minuscule cross-sections which need to be explored, 0.1 fb, the LHC needs to provide 100 fb-1/yr, or an instantaneous luminosity of 1034 / (cm2 sec). With a bunch crossing interval of 25 nsec, well matched to detector speeds, there will be 25 events occupying each bunch crossing. Thus the physics requires fast, finely segmented, low noise and radiation resistant detectors which provide redundant measurements of the rarely produced electrons and muons. To achieve those goals, new ground was broken in constructing the A Toroidal LHC ApparatuS (ATLAS) and Compact Muon Solenoid (CMS) detectors in the vertex detectors, tracking systems, calorimetry, strong magnets, muon systems, front end electronics, trigger systems, and in the data acquisition methods used.
