Luminosity, Beam Monitoring and Triggering for the CMS Experiment and Measurement of the Total Inelastic Cross-section at √s
Author: Alan James Bell
Publisher:
Published: 2013
Total Pages: 247
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.
Particle Physics Reference Library
Author: Christian W. Fabjan
Publisher: Springer Nature
Published: 2020
Total Pages: 1083
ISBN-13: 3030353184
DOWNLOAD EBOOKThis second open access volume of the handbook series deals with detectors, large experimental facilities and data handling, both for accelerator and non-accelerator based experiments. It also covers applications in medicine and life sciences. A joint CERN-Springer initiative, the "Particle Physics Reference Library" provides revised and updated contributions based on previously published material in the well-known Landolt-Boernstein series on particle physics, accelerators and detectors (volumes 21A, B1,B2,C), which took stock of the field approximately one decade ago. Central to this new initiative is publication under full open access
A Hardware Track-Trigger for CMS
Author: Thomas Owen James
Publisher: Springer Nature
Published: 2019-10-28
Total Pages: 121
ISBN-13: 3030319342
DOWNLOAD EBOOKThe work described in this PhD thesis is a study of a real implementation of a track-finder system which could provide reconstructed high transverse momentum tracks to the first-level trigger of the High Luminosity LHC upgrade of the CMS experiment. This is vital for the future success of CMS, since otherwise it will be impossible to achieve the trigger selectivity needed to contain the very high event rates. The unique and extremely challenging requirement of the system is to utilise the enormous volume of tracker data within a few microseconds to arrive at a trigger decision. The track-finder demonstrator described proved unequivocally, using existing hardware, that a real-time track-finder could be built using present-generation FPGA-based technology which would meet the latency and performance requirements of the future tracker. This means that more advanced hardware customised for the new CMS tracker should be even more capable, and will deliver very significant gains for the future physics returns from the LHC.
High Energy Physics Index
Author:
Publisher:
Published: 1992
Total Pages: 634
ISBN-13:
DOWNLOAD EBOOKChange to the D0 Luminosity Monitor Constant
Author:
Publisher:
Published: 2001
Total Pages:
ISBN-13:
DOWNLOAD EBOOKThe D0 experiment has previously calculated its luminosities using a visible cross section (luminosity monitor constant) for its Level 0 trigger, [sigma][sub L0]= 42.9 mb based on the E710 inelastic cross section measurements. Recently, CDF has also published inelastic cross section measurements markedly different from E710. The D0 experiment has moved to world average inelastic cross sections at[radical]s= 1.8 TeV. The result changes the D0 visible cross section to[sigma][sub L0]= 48.2 mb which is an increase of 12.4% in the visible cross section value. The error on luminosity has been left unchanged at 12%.
Online Luminosity Measurement at CMS for Energy Frontier Physics After LS1
Author:
Publisher:
Published: 2015
Total Pages: 2
ISBN-13:
DOWNLOAD EBOOKThis proposal was directed towards the measurement of Bunch-by-Bunch and Total Luminosity in the CMS experiment using Single-Crystal Diamond (sCVD) installed close to the Interaction Point - known as the Fast Beam Conditions Monitor, or BCM1F detector. The proposal was successfully carried out and in February 2015 CMS installed its upgraded BCM1F detector. At first collisions in June 2015 the BCM1F was used as the primary luminometer, then in August 2015 a Van De Meer scan has been carried out and the detailed luminometer calibration is under study. In all aspects of performance measurement the upgraded detector has satisfied its design parameters and as an overview of its performance in this report will show, we have high expectations that the detector will be a powerful addition to the luminosity measurement at CMS and LHC. The proposed upgrade of BCM1F was a collaboration of CMS Institutes in Germany (DESY-Zeuthen) and the USA (Princeton) and of CERN itself.
Study of the Inclusive Beauty Production at CMS and Construction and Commissioning of the CMS Pixel Barrel Detector
Author: Lea Caminada
Publisher: Springer Science & Business Media
Published: 2012-02-23
Total Pages: 159
ISBN-13: 3642245617
DOWNLOAD EBOOKThis thesis describes one of the first measurements at the CERN LHC -- the world's largest and highest-energy particle collider. The CMS collision data is analyzed, and results in the first measurement of the inclusive b cross section using semileptonic decays at a center of mass energy of 7 TeV.
The CMS Silicon Strip Tracker
Author: Oliver Pooth
Publisher: Springer Science & Business Media
Published: 2010-04-11
Total Pages: 147
ISBN-13: 383489639X
DOWNLOAD EBOOKOliver Pooth describes the silicon strip tracker of the CMS detector and discusses methods of quality control that are new to the field of particle detector physics. These methods were established to guarantee a uniform behaviour of all detector modules which were built and tested in various places worldwide.
